Common use of Cash Settlement Option Clause in Contracts

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. By: /s/ Neslihan Adanali Name: Neslihan Adanali Title: Loan Closer II If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 40 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III AIMCO CLO, Ltd. Series 2014-A By: /s/ Neslihan Adanali Xxxx Xxxx Name: Neslihan Adanali Xxxx Xxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: /s/ Xxxx X. Xxxxxxx Name: Xxxx X. Xxxxxxx Title: Authorized Signatory Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 18, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOABS Loans 2007 Limited, Ltd. a subsidiary of Xxxxxxx Xxxxx Institutional Funds II PLC $954,954.49 By: /s/ Neslihan Adanali Xxxxx Xxx Name: Neslihan Adanali Xxxxx Xxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Xxxxxx Park CLO Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLONHIT: U.S. High Yield Bond Trust By: Xxxxxx, Ltd. Xxxxxx Trust Company, LLC. its Trustee By: /s/ Neslihan Adanali Xxxx XxXxxxxx Name: Neslihan Adanali Xxxx XxXxxxxx Title: Loan Closer II Vice President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Xxxxxx Xxxxxx Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx XXVI Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCQS Credit Multi Asset Fund, Ltd. a sub-fund of CQS Global Funds (Ireland) plc By: /s/ Neslihan Adanali Xxxxx Xxxxxxx Name: Neslihan Adanali Xxxxx Xxxxxxx Title: Loan Closer II Authorised Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Xxxxxx Park CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 42 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Quaestio Capital Fund (in respect of CMAP—QCF— Credit Multi Asset Pool) By: /s/ Neslihan Adanali Xxxxx Xxxxxxx Name: Neslihan Adanali Xxxxx Xxxxxxx Title: Loan Closer II Authorised Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Credit Opportunities 2012-1 Financing Limited By: GoldenTree Asset Management, Ltd. L.P. By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 16, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. II CLO Ltd By: /s/ Neslihan Adanali Name: Neslihan Adanali Title: Loan Closer II If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx XXIV Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLONHIT: Senior Floating Rate and Fixed Income Trust By: Xxxxxx Xxxxxx Trust Company, Ltd. LLC, its Trustee By: /s/ Neslihan Adanali Xxxx XxXxxxxx Name: Neslihan Adanali Xxxx XxXxxxxx Title: Loan Closer II Vice President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Xxxxxx Xxxxxx Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Gracechurch Opportunities Fund Limited By: /s/ Neslihan Adanali Xxxxx Xxxxxxx Name: Neslihan Adanali Xxxxx Xxxxxxx Title: Loan Closer II Authorised Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 30 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. CQS Aiguille du Chardonnet MF S.C.A. SICAV-SIF By: /s/ Neslihan Adanali Xxxxx Xxxxxxx Name: Neslihan Adanali Xxxxx Xxxxxxx Title: Loan Closer II Authorised Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCedarview Liquid Short Duration, Ltd. LP By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Managing Partner If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCedarview Opportunities Master Fund, Ltd. LP By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Managing Partner If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAiguilles Rouges Sector A Investment Fund, Ltd. L.P. By: HPS Investment Partners, LLC, Its Investment Partners By: /s/ Neslihan Adanali Xxxxx Xxxx Name: Neslihan Adanali Xxxxx Xxxx Title: Loan Closer II Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners HPS Investment Partners, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 45 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Cumberland Park CLO Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 38 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Nelder Grove CLO, Ltd. By: Tall Tree Investment Management, LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Name: Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Title: Loan Closer II Officer If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Taconic Park CLO Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Thacher Park CLO, Ltd. BY: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Tuolumne Grove CLO, Ltd. By: Tall Tree Investment Management, LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Name: Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Title: Loan Closer II Officer If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Catskill Park CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOATRIUM XI By: Credit Suisse Asset Management, Ltd. LLC, as portfolio manager By: /s/ Neslihan Adanali Xxxxx Xxxxxx Name: Neslihan Adanali Xxxxx Xxxxxx Title: Loan Closer II Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ares CLO Warehouse 2017-2 Ltd. By: Ares CLO Management II LLC, as its Asset Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ares XLI CLO Ltd. By: Ares CLO Management II LLC, as asset manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III V CLO, Ltd. By: AEGON USA Investment Management, LLC, as its Portfolio Manager By: /s/ Neslihan Adanali Name: Neslihan Adanali Title: Loan Closer II If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar CBAM Funding III CLO, Ltd. 2016-1 LLC By: /s/ Neslihan Adanali Xxx Xxxxx Name: Neslihan Adanali Xxx Xxxxx Title: Loan Closer II Partner If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Lockwood Grove CLO, Ltd. By: Tall Tree Investment Management, LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Name: Neslihan Adanali Xxxxxxx X. Xxxxxxxx Xx. Title: Loan Closer II Officer If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGOLDENTREE LOAN OPPORTUNITIES XI, Ltd. LIMITED By: GoldenTree Asset Management, LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 15, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO XI, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. ANFIELD FUNDING ULC By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Scotiabank Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Xxxxxx QIF Fund plc (in respect of Xxxxxx Multi-Asset Credit Fund) By: /s/ Neslihan Adanali Xxxxx Xxxxxxx Name: Neslihan Adanali Xxxxx Xxxxxxx Title: Loan Closer II Authorised Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Loan Opportunities IX, Ltd. Limited By: GoldenTree Asset Management, LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. BOWERY FUNDING ULC By: /s/ Neslihan Adanali Xxxxxxx Xxxxxxxx Name: Neslihan Adanali Xxxxxxx Xxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Scotiabank Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III AIMCO CLO, Ltd. Series 2017-A By: /s/ Neslihan Adanali Xxxx Xxxx Name: Neslihan Adanali Xxxx Xxxx Title: Loan Closer II Authorized Signature If a second signature is necessary: By: /s/ Xxxx X. Xxxxxxx Name: Xxxx X. Xxxxxxx Title: Authorized Signatory Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Credit Opportunities 2014-1 Financing Limited By: GoldenTree Asset Management, Ltd. L.P. By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 37 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Grippen Park CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager to Warehouse Parent, Ltd. By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Blackstone / GSO Long-Short Credit Income Fund By: GSO / Blackstone Debt Funds Management LLC as Investment Advisor By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Loan Opportunities VIII, Ltd. Limited By: GoldenTree Asset Management, L.P. By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 49 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. BLACKSTONE/GSO STRATEGIC CREDIT FUND By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 41 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGOLDENTREE LOAN OPPORTUNITIES X, Ltd. LIMITED By: GoldenTree Asset Management, LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAres Institutional Loan Fund B.V. By: Ares Management Limited, Ltd. as manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III VI CLO, Ltd. By: AEGON USA Investment Management, LLC, as its Portfolio Manager By: /s/ Neslihan Adanali Name: Neslihan Adanali Title: Loan Closer II If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLODOLLAR SENIOR LOAN FUND, Ltd. LTD. By: Credit Suisse Asset Management, LLC, as investment manager By: /s/ Neslihan Adanali Xxxxx Xxxxxx Name: Neslihan Adanali Xxxxx Xxxxxx Title: Loan Closer II Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Loan Management US CLO 1, Ltd. By: GoldenTree Loan Management, LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. ALLSTATE INSURANCE COMPANY By: /s/ Neslihan Adanali Xxxx Xxxx Name: Neslihan Adanali Xxxx Xxxx Title: Loan Closer II Authorized Signature If a second signature is necessary: By: /s/ Xxxx X. Xxxxxxx Name: Xxxx X. Xxxxxxx Title: Authorized Signatory Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III IV CLO, Ltd. By: /s/ Neslihan Adanali Name: Neslihan Adanali Title: Loan Closer II If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Xxxx Square CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCutwater 2014-I, Ltd. Cutwater 2014-II, Ltd. Cutwater 2014-III, Ltd. By: /s/ Neslihan Adanali Xxxx Xxxxxxx Name: Neslihan Adanali Xxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 19, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 17, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOERIE INDEMNITY COMPANY By: Credit Suisse Asset Management, Ltd. LLC., as its investment manager By: /s/ Neslihan Adanali Xxxxx Xxxxxx Name: Neslihan Adanali Xxxxx Xxxxxx Title: Loan Closer II Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Xxxxxxx Park CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Blackstone / GSO Corporate Funding III CLO, Ltd. Designated Activity Company By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ares XL CLO Ltd. By: Ares CLO Management II LLC, its asset manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree 2004 Trust By: GoldenTree Asset Management, Ltd. LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar CCP Loan Funding III CLOLLC By: Citibank, Ltd. N.A., By: /s/ Neslihan Adanali Xxxxxxx Xxxxxxxx Name: Neslihan Adanali Xxxxxxx Xxxxxxxx Title: Loan Closer II Associate Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCanoe Floating Rate Income Fund By: AEGON USA, Ltd. as its Investment Advisor By: /s/ Neslihan Adanali Xxxx Xxxxxx Name: Neslihan Adanali Xxxx Xxxxxx Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Aegon USA Investment Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOATRIUM XII By: Credit Suisse Asset Management, Ltd. LLC, as portfolio manager By: /s/ Neslihan Adanali Xxxxx Xxxxxx Name: Neslihan Adanali Xxxxx Xxxxxx Title: Loan Closer II Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Credit Suisse Asset Management, LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ares XLII CLO Ltd. By: Ares CLO Management II LLC, its asset manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ares XLIII CLO Ltd. By: Ares CLO Management LLC, as its Asset Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners Ares Management LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Birchwood Park CLO, Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Treman Park CLO, Ltd. BY: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx 31 Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCity of New York Group Trust By: GoldenTree Asset Management, Ltd. L.P. By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GoldenTree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOAMMC CLO 20, Ltd. LIMITED By: American Money Management Corp., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx X. Xxxxx Name: Neslihan Adanali Xxxxx X. Xxxxx Title: Loan Closer II Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC American Money Management Corp. Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Emerson Park CLO Ltd. By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Citi Loan Funding III CLOChelt LLC By: Citibank, Ltd. N.A., By: /s/ Neslihan Adanali Xxxxxxx Xxxxxxxx Name: Neslihan Adanali Xxxxxxx Xxxxxxxx Title: Loan Closer II Associate Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOCITIBANK, Ltd. N.A. By: /s/ Neslihan Adanali Xxxxxx Xxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxx Title: Loan Closer II Attorney-in-Fact If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III AIMCO CLO, Ltd. Series 2015-A By: /s/ Neslihan Adanali Xxxx Xxxx Name: Neslihan Adanali Xxxx Xxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: /s/ Xxxx X. Xxxxxxx Name: Xxxx X. Xxxxxxx Title: Authorized Signatory Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Blackstone / GSO Senior Floating Rate Term Fund By: GSO / Blackstone Debt Funds Management LLC as Investment Advisor By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III Bristol Park CLO, Ltd. Ltd By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx XXV Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGOLDENTREE LOAN OPPORTUNITIES XII, Ltd. LIMITED By: GoldenTree Asset Management, LP By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxx XXVIII Senior Loan Fund By: PGIM, Ltd. Inc., as Collateral Manager By: /s/ Neslihan Adanali Xxxxx Pahdya Name: Neslihan Adanali Xxxxx Pahdya Title: Loan Closer II Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOXxxxxxx Sachs Lux Investment Funds for the benefit of Xxxxxxx Xxxxx High Yield Floating Rate Portfolio (Lux) by Xxxxxxx Sachs Asset Management, Ltd. L.P. solely as its investment advisor and not as principal $3,418,851.27 By: /s/ Neslihan Adanali Xxxxx Xxx Name: Neslihan Adanali Xxxxx Xxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLOGoldenTree Loan Opportunities VII, Ltd. Ltd By: GoldenTree Asset Management, L.P. By: /s/ Neslihan Adanali Xxxxx Xxxxx Name: Neslihan Adanali Xxxxx Xxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC Golden Tree Asset Management, LP Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Cash Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Cedar Funding III CLO, Ltd. Dorchester Park CLO Designated Activity Company By: GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ Neslihan Adanali Xxxxxx Xxxxxxxxx Name: Neslihan Adanali Xxxxxx Xxxxxxxxx Title: Loan Closer II Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): Virtus Partners LLC GSO Capital Exhibit A [Form of Lender Signature Page to Amendment] The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. If you are an Existing Term Lender, you, if and only if you indicate below, hereby irrevocably and unconditionally approve of, and consent to, the Amendment, and to the attachment of this Lender Signature Page to the Amendment, and hereby agree that all parties to the Amendment are express third party beneficiaries of this Existing Term Lender Signature Page to the Amendment and hereby further agree as follows: [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.