3.625% Uses in Definitions Clause

Definitions from Supplemental Indenture

THIS TWENTIETH SUPPLEMENTAL INDENTURE is entered into as of May 26, 2017, by and between DDR Corp., an Ohio corporation (the Company), and U.S. Bank National Association (the Trustee), a national banking association organized and existing under the laws of the United States, as successor trustee to U.S. Bank Trust National Association, as successor to National City Bank.

Definitions. The definition of Consolidated Income Available for Debt Service is hereby amended in its entirety as follows: Consolidated Income Available for Debt Service for any period means Consolidated Net Income of the Company and its Subsidiaries (a) plus amounts which have been deducted for (i) interest on Debt of the Company and its Subsidiaries, (ii) provision for taxes of the Company and its Subsidiaries based on income, (iii) amortization of debt discount, and (iv) depreciation and amortization, and (b) excluding (i) any extraordinary, non-recurring and other unusual noncash charge, (ii) any gains and losses on sale of real estate, and (iii) the equity in net income or loss of joint ventures in which the Company or its Subsidiaries owns an interest to the extent not providing a source of, or requiring a use of, cash, respectively. The amendment of the definition of Consolidated Income Available for Debt Service relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Designated Securities is hereby amended in its entirety as follows: Designated Securities means the Companys $300,000,000 principal amount of 4.625% Notes Due 2010, the Companys $275,000,000 principal amount of 3.875% Notes Due 2009, the Companys $250,000,000 principal amount of 5.25% Notes Due 2011, the Companys $200,000,000 principal amount of 5.0% Notes Due 2010, the Companys $200,000,000 principal amount of 5.5% Notes Due 2015, the Companys $350,000,000 principal amount of 5.375% Notes Due 2012, the Companys $300,000,000 principal amount of 9.625% Notes Due 2016, the Companys $300,000,000 principal amount of 7.50% Notes Due 2017, the Companys $300,000,000 principal amount of 7.875% Notes Due 2020, the Companys $300,000,000 principal amount of 4.75% Notes due 2018, the Companys $450,000,000 principal amount of 4.625% Notes due 2022, the Companys $300,000,000 principal amount of 3.375% Notes due 2023, the Companys $300,000,000 principal amount of 3.500% Notes due 2021, the Companys $500,000,000 principal amount of 3.625% Notes due 2025, the Companys $400,000,000 principal amount of 4.250% Notes due 2026 and the Companys $450,000,000 principal amount of 4.700% Notes due 2027. The definition of Maximum Annual Service Charge is hereby amended in its entirety as follows: Maximum Annual Service Charge as of any date means the maximum amount payable during the Companys four consecutive fiscal quarters most recently ended before such date for interest on, and required amortization of, Debt (including, in the case of the additional Debt being incurred, the pro forma effect of the Debt and intended application of the proceeds thereof as if such Debt had been outstanding for such four-quarter period). The amount payable for amortization shall include the amount of any sinking fund or other analogous fund for the retirement of Debt and the amount payable on account of principal of any such Debt that matures serially other than at the final maturity date of such Debt. The amendment of the definition of Maximum Annual Service Charge relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Total Assets is hereby amended in its entirety as follows: Total Assets as of any date means the sum of (i) Undepreciated Real Estate Assets and (ii) all other assets of the Company and its Subsidiaries determined on a consolidated basis in accordance with GAAP (but excluding goodwill and unamortized debt costs) after eliminating intercompany accounts and transactions. The amendment of the definition of Total Assets relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Unencumbered Real Estate Asset Value is hereby amended in its entirety as follows: Unencumbered Real Estate Asset Value as of any date means the sum of: (a) the Undepreciated Real Estate Assets, which are not encumbered by any mortgage, lien, charge, pledge or security interest, as of the end of the Companys latest fiscal quarter covered in the Companys Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the case may be, most recently filed with the Commission (or, if that filing is not required under the Securities Exchange Act of 1934, as amended, with the Trustee) prior to such date; provided, however, that all investments in unconsolidated limited partnerships, unconsolidated limited liability companies and other unconsolidated entities shall be excluded from Unencumbered Real Estate Asset Value; and (b) the purchase price of any real estate assets that are not encumbered by any mortgage, lien, charge, pledge, or security interest and were acquired by the Company or any Subsidiary after the end of such quarter; provided however, that all

Definitions from Registration Rights Agreement

This Registration Rights Agreement (this Agreement) is made and entered into as of January 19, 2017, by and among Broadcom Cayman Finance Limited, an exempted company incorporated with limited liability under the laws of the Cayman Islands (Cayman Finance), Broadcom Corporation, a California corporation (Broadcom and together with Cayman Finance, the Co-Issuers), Broadcom Limited, a public company incorporated under the laws of the Republic of Singapore (Parent), Broadcom Cayman L.P., a limited partnership organized under the laws of the Cayman Islands (Broadcom Cayman), BC Luxembourg S.a r.l., a Luxembourg private limited liability company (societe a responsabilite limitee) having its registered office at 3A, Sentier de lEsperance, L-1474 Luxembourg, Grand-Duchy of Luxembourg, and registered with the Luxembourg Register of Commerce and Companies under registration number B 201613 (BC Lux, and together with Parent and Broadcom Cayman, the Guarantors), and Merrill Lynch, Pierce, Fenner

Definitions. As used in this Agreement, the following capitalized terms shall have the following meanings: Broker-Dealer: Any broker or dealer registered under the Exchange Act. Business Day: Any day other than a Saturday, Sunday or U.S. federal holiday or a day on which banking institutions or trust companies located in New York, New York are authorized or obligated to be closed. Closing Date: The date of this Agreement. Commission: The Securities and Exchange Commission. Consummate: Registered Exchange Offers shall be deemed Consummated for purposes of this Agreement upon the occurrence of (i) the filing and effectiveness under the Securities Act of the Exchange Offer Registration Statement relating to the Exchange Securities to be issued in the Exchange Offers, (ii) the maintenance of such Registration Statement continuously effective and the keeping of the Exchange Offers open for a period not less than the minimum period required pursuant to Section 3(b) hereof, and (iii) the delivery by the Co-Issuers to the Registrar under the Indenture of Exchange Securities in the same aggregate principal amount as the aggregate principal amount of Initial Securities that were tendered by Holders thereof pursuant to the Exchange Offers. Exchange Act: The Securities Exchange Act of 1934, as amended. Exchange Date: As defined in Section 3(b) hereof. Exchange Offer Registration Statement: The Registration Statement relating to the Exchange Offers, including the related Prospectus. Exchange Offers: The registration by the Co-Issuers under the Securities Act of the Exchange Securities pursuant to a Registration Statement pursuant to which the Co-Issuers offer the Holders of all outstanding Transfer Restricted Securities the opportunity to exchange all such outstanding Transfer Restricted Securities held by such Holders for Exchange Securities in an aggregate principal amount equal to the aggregate principal amount of the Transfer Restricted Securities tendered in such exchange offers by such Holders. Exchange Securities: The 2.375% Senior Notes due 2020, the 3.000% Senior Notes due 2022, the 3.625% Senior Notes due 2024 and the 3.875% Senior Notes due 2027 of the same series under the Indenture as the Initial Notes and the Guarantees attached thereto, to be issued to Holders in exchange for Transfer Restricted Securities pursuant to this Agreement. Exempt Resales: The transactions in which the Initial Purchasers propose to sell the Initial Securities to certain qualified institutional buyers, as such term is defined in Rule 144A under the Securities Act and to certain non-U.S. persons pursuant to Regulation S under the Securities Act. FINRA: The Financial Industry Regulatory Authority, Inc. Holders: As defined in Section 2(b) hereof. Indemnified Holder: As defined in Section 8(a) hereof. Indenture: The Indenture, dated as of January 19, 2017, by and among the Co-Issuers, the Guarantors and Wilmington Trust, National Association, as trustee (the Trustee), pursuant to which the Initial Securities are to be issued, as such Indenture is amended or supplemented from time to time in accordance with the terms thereof. Initial Notes: As defined in the preamble hereto. Initial Placement: The issuance and sale by the Co-Issuers of the Initial Securities to the Initial Purchasers pursuant to the Purchase Agreement. Initial Purchaser: As defined in the preamble hereto. Initial Securities: As defined in the preamble hereto. Interest Payment Date: As defined in the Indenture and the Initial Securities. Person: An individual, partnership, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof. Prospectus: The prospectus included in a Registration Statement, as amended or supplemented by any prospectus supplement and by all other amendments thereto, including post-effective amendments, and all material incorporated by reference into such Prospectus. Registration Default: As defined in Section 5 hereof. Registration Statement: Any registration statement of the Co-Issuers relating to (a) an offering of Exchange Securities pursuant to the Exchange Offers or (b) the registration for resale of Transfer Restricted Securities pursuant to the Shelf Registration Statement, which is filed pursuant to the provisions of this Agreement, in each case, including the Prospectus included therein, all amendments and supplements thereto (including post-effective amendments) and all exhibits and material incorporated by reference therein. Related Judgment: As defined in Section 12(i)(i) hereof. Related Proceedings: As defined in Section 12(i)(i) hereof. Securities Act: The Securities Act of 1933, as amended. Shelf Effectiveness Period: As defined in Section 4(a) hereof. Shelf Filing Deadline: As defined in Section 4(a) hereof. Shelf Registration Statement: A shelf registration statement of the Co-Issuers that covers all or a portion of the Transfer Restricted Securities on an appropriate form under Rule 415 under

Definitions from Supplemental Indenture

THIS NINETEENTH SUPPLEMENTAL INDENTURE is entered into as of October 21, 2015, by and between DDR Corp., an Ohio corporation (the Company), and U.S. Bank National Association (the Trustee), a national banking association organized and existing under the laws of the United States, as successor trustee to U.S. Bank Trust National Association, as successor to National City Bank.

Definitions. The definition of Consolidated Income Available for Debt Service is hereby amended in its entirety as follows: Consolidated Income Available for Debt Service for any period means Consolidated Net Income of the Company and its Subsidiaries (a) plus amounts which have been deducted for (i) interest on Debt of the Company and its Subsidiaries, (ii) provision for taxes of the Company and its Subsidiaries based on income, (iii) amortization of debt discount, and (iv) depreciation and amortization, and (b) excluding (i) any extraordinary, non-recurring and other unusual noncash charge, (ii) any gains and losses on sale of real estate, and (iii) the equity in net income or loss of joint ventures in which the Company or its Subsidiaries owns an interest to the extent not providing a source of, or requiring a use of, cash, respectively. The amendment of the definition of Consolidated Income Available for Debt Service relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Designated Securities is hereby amended in its entirety as follows: Designated Securities means the Companys $300,000,000 principal amount of 4.625% Notes Due 2010, the Companys $275,000,000 principal amount of 3.875% Notes Due 2009, the Companys $250,000,000 principal amount of 5.25% Notes Due 2011, the Companys $200,000,000 principal amount of 5.0% Notes Due 2010, the Companys $200,000,000 principal amount of 5.5% Notes Due 2015, the Companys $350,000,000 principal amount of 5.375% Notes Due 2012, the Companys $300,000,000 principal amount of 9.625% Notes Due 2016, the Companys $300,000,000 principal amount of 7.50% Notes Due 2017, the Companys $300,000,000 principal amount of 7.875% Notes Due 2020, the Companys $300,000,000 principal amount of 4.75% Notes due 2018, the Companys $450,000,000 principal amount of 4.625% Notes due 2022, the Companys $300,000,000 principal amount of 3.375% Notes due 2023, the Companys $300,000,000 principal amount of 3.500% Notes due 2021, the Companys $500,000,000 principal amount of 3.625% Notes due 2025 and the Companys $400,000,000 principal amount of 4.250% Notes due 2026. The definition of Maximum Annual Service Charge is hereby amended in its entirety as follows: Maximum Annual Service Charge as of any date means the maximum amount payable during the Companys four consecutive fiscal quarters most recently ended before such date for interest on, and required amortization of, Debt (including, in the case of the additional Debt being incurred, the pro forma effect of the Debt and intended application of the proceeds thereof as if such Debt had been outstanding for such four-quarter period). The amount payable for amortization shall include the amount of any sinking fund or other analogous fund for the retirement of Debt and the amount payable on account of principal of any such Debt that matures serially other than at the final maturity date of such Debt. The amendment of the definition of Maximum Annual Service Charge relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Total Assets is hereby amended in its entirety as follows: Total Assets as of any date means the sum of (i) Undepreciated Real Estate Assets and (ii) all other assets of the Company and its Subsidiaries determined on a consolidated basis in accordance with GAAP (but excluding goodwill and unamortized debt costs) after eliminating intercompany accounts and transactions. The amendment of the definition of Total Assets relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Unencumbered Real Estate Asset Value is hereby amended in its entirety as follows: Unencumbered Real Estate Asset Value as of any date means the sum of: (a) the Undepreciated Real Estate Assets, which are not encumbered by any mortgage, lien, charge, pledge or security interest, as of the end of the Companys latest fiscal quarter covered in the Companys Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the case may be, most recently filed with the Commission (or, if that filing is not required under the Securities Exchange Act of 1934, as amended, with the Trustee) prior to such date; provided, however, that all investments in unconsolidated limited partnerships, unconsolidated limited liability companies and other unconsolidated entities shall be excluded from Unencumbered Real Estate Asset Value; and (b) the purchase price of any real estate assets that are not encumbered by any mortgage, lien, charge, pledge, or security interest and were acquired by the Company or any Subsidiary after the end of such quarter; provided however, that all investments in unconsolidated limited partnerships, unconsolidated l

Definitions from Supplemental Indenture

THIS EIGHTEENTH SUPPLEMENTAL INDENTURE is entered into as of January 22, 2015, by and between DDR Corp., an Ohio corporation (the Company), and U.S. Bank National Association (the Trustee), a national banking association organized and existing under the laws of the United States, as successor trustee to U.S. Bank Trust National Association, as successor to National City Bank.

Definitions. The definition of Consolidated Income Available for Debt Service is hereby amended in its entirety as follows: Consolidated Income Available for Debt Service for any period means Consolidated Net Income of the Company and its Subsidiaries (a) plus amounts which have been deducted for (i) interest on Debt of the Company and its Subsidiaries, (ii) provision for taxes of the Company and its Subsidiaries based on income, (iii) amortization of debt discount, and (iv) depreciation and amortization, and (b) excluding (i) any extraordinary, non-recurring and other unusual noncash charge, (ii) any gains and losses on sale of real estate, and (iii) the equity in net income or loss of joint ventures in which the Company or its Subsidiaries owns an interest to the extent not providing a source of, or requiring a use of, cash, respectively. The amendment of the definition of Consolidated Income Available for Debt Service relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Designated Securities is hereby amended in its entirety as follows: Designated Securities means the Companys $300,000,000 principal amount of 4.625% Notes Due 2010, the Companys $275,000,000 principal amount of 3.875% Notes Due 2009, the Companys $250,000,000 principal amount of 5.25% Notes Due 2011, the Companys $200,000,000 principal amount of 5.0% Notes Due 2010, the Companys $200,000,000 principal amount of 5.5% Notes Due 2015, the Companys $350,000,000 principal amount of 5.375% Notes Due 2012, the Companys $300,000,000 principal amount of 9.625% Notes Due 2016, the Companys $300,000,000 principal amount of 7.50% Notes Due 2017, the Companys $300,000,000 principal amount of 7.875% Notes Due 2020, the Companys $300,000,000 principal amount of 4.75% Notes due 2018, the Companys $450,000,000 principal amount of 4.625% Notes due 2022, the Companys $300,000,000 principal amount of 3.375% Notes due 2023, the Companys $300,000,000 principal amount of 3.500% Notes due 2021 and the Companys $500,000,000 principal amount of 3.625% Notes due 2025. The definition of Maximum Annual Service Charge is hereby amended in its entirety as follows: Maximum Annual Service Charge as of any date means the maximum amount payable during the Companys four consecutive fiscal quarters most recently ended before such date for interest on, and required amortization of, Debt (including, in the case of the additional Debt being incurred, the pro forma effect of the Debt and intended application of the proceeds thereof as if such Debt had been outstanding for such four-quarter period). The amount payable for amortization shall include the amount of any sinking fund or other analogous fund for the retirement of Debt and the amount payable on account of principal of any such Debt that matures serially other than at the final maturity date of such Debt. The amendment of the definition of Maximum Annual Service Charge relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Total Assets is hereby amended in its entirety as follows: Total Assets as of any date means the sum of (i) Undepreciated Real Estate Assets and (ii) all other assets of the Company and its Subsidiaries determined on a consolidated basis in accordance with GAAP (but excluding goodwill and unamortized debt costs) after eliminating intercompany accounts and transactions. The amendment of the definition of Total Assets relates solely to the rights of the Holders of the Notes and shall not affect the rights under the Indenture of the Holders of Securities of any other series. The definition of Unencumbered Real Estate Asset Value is hereby amended in its entirety as follows: Unencumbered Real Estate Asset Value as of any date means the sum of: (a) the Undepreciated Real Estate Assets, which are not encumbered by any mortgage, lien, charge, pledge or security interest, as of the end of the Companys latest fiscal quarter covered in the Companys Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the case may be, most recently filed with the Commission (or, if that filing is not required under the Securities Exchange Act of 1934, as amended, with the Trustee) prior to such date; provided, however, that all investments in unconsolidated limited partnerships, unconsolidated limited liability companies and other unconsolidated entities shall be excluded from Unencumbered Real Estate Asset Value; and (b) the purchase price of any real estate assets that are not encumbered by any mortgage, lien, charge, pledge, or security interest and were acquired by the Company or any Subsidiary after the end of such quarter; provided however, that all investments in unconsolidated limited partnerships, unconsolidated limited liability companies and other unconsolidated entities shall be

Definitions from Supplemental Indenture

TENTH SUPPLEMENTAL INDENTURE, dated as of March 15, 2013, between DUKE REALTY LIMITED PARTNERSHIP, an Indiana limited partnership (the Issuer), having its principal offices at 600 East 96th Street, Suite 100, Indianapolis, IN 46240 and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (as successor to J.P. MORGAN TRUST COMPANY, National Association), a national banking association organized under the laws of the United States of America, as trustee (the Trustee), having its Corporate Trust Office at 2 N. LaSalle Street, Suite 1020, Chicago, Illinois 60602.

Definitions. Capitalized terms used in this Tenth Supplemental Indenture and not otherwise defined shall have the meanings ascribed to them in the Original Indenture. In addition, the following terms shall have the following meanings to be equally applicable to both the singular and the plural forms of the terms defined: DTC means The Depository Trust Company. Global Note means a single fully-registered global note in book-entry form, without coupons, substantially in the form of Exhibit A attached hereto. Indenture means the Original Indenture as supplemented by this Tenth Supplemental Indenture. Make-Whole Amount means, in connection with any optional redemption or accelerated payment of any Note, the excess, if any, of (i) the aggregate present value as of the date of such redemption or accelerated payment of each dollar of principal being redeemed or paid and the amount of interest (exclusive of interest accrued to the date of redemption or accelerated payment) that would have been payable in respect of each such dollar if such redemption or accelerated payment had not been made, determined by discounting, on a semi-annual basis, such principal and interest at the Reinvestment Rate (determined on the third Business Day preceding the date such notice of redemption is given or declaration of acceleration is made) from the respective dates on which such principal and interest would have been payable if such redemption or accelerated payment had not been made, over (ii) the aggregate principal amount of the Notes being redeemed or paid. Notes means the Issuers 3.625% Senior Notes due April 15, 2023, a form of which is attached hereto as Exhibit A. Redemption Price means the sum of (i) the principal amount of the Notes being redeemed and (ii) the Make-Whole Amount, if any, with respect to such Notes, in either case plus accrued and unpaid interest thereon to, but excluding, the Redemption Date; provided, however, that if the Redemption Date is any time on or after January 15, 2023, the Redemption Price shall mean the principal amount of the Notes being redeemed plus accrued and unpaid interest thereon to, but excluding, the Redemption Date. Reinvestment Rate means 0.300% plus the arithmetic mean of the yields under the respective heading Week Ending published in the most recent Statistical Release under the caption Treasury Constant Maturities for the maturity (rounded to the nearest month) corresponding to the remaining life to maturity, as of the payment date of the principal being redeemed or paid. If no maturity exactly corresponds to such maturity, yields for the two published maturities most closely corresponding to such maturity shall be calculated pursuant to the immediately preceding sentence and the Reinvestment Rate shall be interpolated or extrapolated from such yields on a straight-line basis, rounding in each of such relevant periods to the nearest month. For the purposes of calculating the Reinvestment Rate, the most recent Statistical Release published prior to the date of determination of the Make-Whole Amount shall be used. Statistical Release means the statistical release designated H.15 or any successor publication which is published weekly by the Federal Reserve System and which establishes yields on actively traded United States government securities adjusted to constant maturities, or, if such statistical release is not published at the time of any determination under the Indenture, then such other reasonably comparable index which shall be designated by the Issuer.

Definitions from Supplemental Indenture

THIS EIGHTH SUPPLEMENTAL INDENTURE is made as of March 8, 2013, by and between MARKEL CORPORATION, a Virginia corporation, having its principal office at 4521 Highwoods Parkway, Glen Allen, Virginia 23060 (the Company), and THE BANK OF NEW YORK MELLON (as successor to THE CHASE MANHATTAN BANK), a New York banking corporation, as Trustee (herein called the Trustee).

Definitions. The following defined terms used herein shall, unless the context otherwise requires, have the meanings specified below. Capitalized terms used herein for which no definition is provided herein shall have the meanings set forth in the Original Indenture. Alterra Merger means the proposed merger of Alterra Capital Holdings Limited, a Bermuda exempted limited liability company (Alterra), with Commonwealth Merger Subsidiary Limited, a Bermuda exempted company and a wholly owned subsidiary of the Company (Merger Sub), in accordance with the Agreement and Plan of Merger (the Alterra Merger Agreement), dated December 18, 2012, among Alterra, the Company and Merger Sub. Business Day means a day other than (i) a Saturday or a Sunday, (ii) a day on which banks in New York, New York are authorized or obligated by law or executive order to remain closed or (iii) a day on which the Corporate Trust Office is closed for business. Comparable Treasury Issue means the United States Treasury security selected by a Reference Treasury Dealer as having an actual or interpolated maturity comparable to the remaining term of the 3.625% Senior Notes called for redemption, that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the 3.625% Senior Notes called for redemption. Comparable Treasury Price means, with respect to any Redemption Date, the average, as determined by the Company, of the Reference Treasury Dealer Quotations for that Redemption Date. Corporate Trust Office means the office of the Trustee at which at any particular time its corporate trust business shall be principally administered in the Borough of Manhattan, The City of New York, which office at the date of original execution of this Indenture is located at 101 Barclay Street 8W, New York, New York 10286. DTC means The Depository Trust Company, a limited purpose trust company organized under New York Banking Law. Interest Payment Dates means March 30 and September 30 of each year, commencing on September 30, 2013. Lien means any mortgage, lien, pledge, security interest or other encumbrance of any kind. Material Subsidiary means a Subsidiary of the Company whose total assets (as determined in accordance with GAAP) represent at least 20% of the total assets of the Company on a consolidated basis. Original Issue Date means March 8, 2013. Outstanding, when used with respect to the 3.625% Senior Notes, means, as of the date of determination, all 3.625% Senior Notes, theretofore authenticated and delivered under the Indenture, except:

Definitions from Supplemental Indenture

THIS EIGHTH SUPPLEMENTAL INDENTURE is made as of March 8, 2013, by and between MARKEL CORPORATION, a Virginia corporation, having its principal office at 4521 Highwoods Parkway, Glen Allen, Virginia 23060 (the Company), and THE BANK OF NEW YORK MELLON (as successor to THE CHASE MANHATTAN BANK), a New York banking corporation, as Trustee (herein called the Trustee).

Definitions. The following defined terms used herein shall, unless the context otherwise requires, have the meanings specified below. Capitalized terms used herein for which no definition is provided herein shall have the meanings set forth in the Original Indenture. Alterra Merger means the proposed merger of Alterra Capital Holdings Limited, a Bermuda exempted limited liability company (Alterra), with Commonwealth Merger Subsidiary Limited, a Bermuda exempted company and a wholly owned subsidiary of the Company (Merger Sub), in accordance with the Agreement and Plan of Merger (the Alterra Merger Agreement), dated December 18, 2012, among Alterra, the Company and Merger Sub. Business Day means a day other than (i) a Saturday or a Sunday, (ii) a day on which banks in New York, New York are authorized or obligated by law or executive order to remain closed or (iii) a day on which the Corporate Trust Office is closed for business. Comparable Treasury Issue means the United States Treasury security selected by a Reference Treasury Dealer as having an actual or interpolated maturity comparable to the remaining term of the 3.625% Senior Notes called for redemption, that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the 3.625% Senior Notes called for redemption. Comparable Treasury Price means, with respect to any Redemption Date, the average, as determined by the Company, of the Reference Treasury Dealer Quotations for that Redemption Date. Corporate Trust Office means the office of the Trustee at which at any particular time its corporate trust business shall be principally administered in the Borough of Manhattan, The City of New York, which office at the date of original execution of this Indenture is located at 101 Barclay Street 8W, New York, New York 10286. DTC means The Depository Trust Company, a limited purpose trust company organized under New York Banking Law. Interest Payment Dates means March 30 and September 30 of each year, commencing on September 30, 2013. Lien means any mortgage, lien, pledge, security interest or other encumbrance of any kind. Material Subsidiary means a Subsidiary of the Company whose total assets (as determined in accordance with GAAP) represent at least 20% of the total assets of the Company on a consolidated basis. Original Issue Date means March 8, 2013. Outstanding, when used with respect to the 3.625% Senior Notes, means, as of the date of determination, all 3.625% Senior Notes, theretofore authenticated and delivered under the Indenture, except:

Definitions from Agreement and Plan of Merger Among

THIS AGREEMENT AND PLAN OF MERGER, dated as of March 5, 2006 (this Agreement), is made and entered into by and among CarrAmerica Realty Corporation, a Maryland corporation (the Company), CarrAmerica Realty Operating Partnership, L.P., a Delaware limited partnership (the Operating Partnership), Carr Realty Holdings, L.P., a Delaware limited partnership (CRH), CarrAmerica Realty, L.P., a Delaware limited partnership (CAR and together with CRH, the DownREIT Partnerships and the DownREIT Partnerships together with the Company and the Operating Partnership, the Company Parties), Nantucket Parent LLC, a Delaware limited liability company (Parent), Nantucket Acquisition Inc., a Maryland corporation and wholly owned subsidiary of Parent (MergerCo), Nantucket CRH Acquisition L.P. , a Delaware limited partnership whose general partner is MergerCo (CRH Merger Partnership) and Nantucket CAR Acquisition L.P., a Delaware limited partnership whose general partner is MergerCo (CAR Merger Partnership a

Definitions. For purposes of this Agreement: Acquisition Proposal means any proposal or offer for, whether in one transaction or a series of related transactions, any (a) merger, consolidation, share exchange, business combination or similar transaction involving the Company, the Operating Partnership or any other Subsidiary that would constitute a significant subsidiary (as defined in Rule 1-02 of Regulation S-X, but substituting 20% for references to 10% therein), (b) sale or other disposition, directly or indirectly, by merger, consolidation, share exchange, business combination or any similar transaction, of any assets of the Company or the Subsidiaries representing 20% or more of the consolidated assets of the Company and the Subsidiaries, (c) issue, sale or other disposition by the Company or any Subsidiary of (including by way of merger, consolidation, share exchange, business combination or any similar transaction) securities (or options, rights or warrants to purchase, or securities convertible into, such securities) representing 20% or more of the votes associated with the outstanding voting equity securities of the Company or 20% or more of the equity interests or general partner interests in the Operating Partnership, either DownREIT Partnership or the CAR General Partner (provided that the reference to the DownREIT Partnerships and the CAR General Partner in this clause (c) shall not be applicable for purposes of Section 9.03(b)(i)), (d) tender offer or exchange offer in which any Person or group (as such term is defined under the Exchange Act) shall acquire beneficial ownership (as such term is defined in Rule 13d-3 under the Exchange Act), or the right to acquire beneficial ownership, of 20% or more of the votes associated with the outstanding Company Common Shares or outstanding equity interests or general partner interests of the Operating Partnership, either DownREIT Partnership or the CAR General Partner (provided that the reference to the DownREIT Partnerships and the CAR General Partner in this clause (d) shall not be applicable for purposes of Section 9.03(b)(i)), (e) recapitalization, restructuring, liquidation, dissolution or other similar type of transaction with respect to the Company, the Operating Partnership or either DownREIT Partnership, or (f) transaction which is similar in form, substance or purpose to any of the foregoing transactions; provided, however, that the term Acquisition Proposal shall not include (i) the Mergers or any of the other transactions contemplated by this Agreement or (ii) any merger, consolidation, business combination, reorganization, recapitalization or similar transaction solely among the Company and one or more Subsidiaries or among Subsidiaries. Action means any claim, action, suit, proceeding, arbitration, mediation or investigation. Affiliate or affiliate of a specified person means a person who, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with, such specified person. beneficial owner has the meaning ascribed to such term under Rule 13d-3(a) of the Exchange Act. Business Day or business day means any day on which the principal offices of the SEC in Washington, D.C. are open to accept filings, or, in the case of determining a date when any payment is due, any day (other than a Saturday or Sunday) on which banks are not required or authorized to close in the City of New York. CAR Class A Preferred Unit means a Class A Preferred Unit of the CAR Surviving Partnership as defined in the form of Annex A attached as Exhibit A hereto, which shall be annexed to and made part of the CAR Partnership Agreement immediately prior to the CAR Merger Effective Time. Certificate or Certificates means any certificate evidencing Company Common Shares or Company Series E Preferred Shares. Company Bylaws means the Third Amended and Restated By-Laws of CarrAmerica Realty Corporation adopted on July 31, 2003, as amended. Company Charter means the Amendment and Restatement of Articles of Incorporation of CarrAmerica Realty Corporation, as amended. Company Common Shares means shares of common stock, par value $0.01 per share, of the Company. Company Material Adverse Effect means, with respect to the Company, an effect, event, development or change that, individually or in the aggregate with all other effects, events, developments or changes, is materially adverse to the assets, business, results of operations or financial condition of the Company, the Subsidiaries and the JV Entities, taken as a whole, other than any effect, event, development or change arising out of or resulting from (a) changes in conditions in the U.S. or global economy or capital or financial markets generally, including changes in interest or exchange rates, (b) changes in general legal, tax, regulatory, political or business conditions that, in each case, generally affect the geographic regions or industries in which the Company, the Subsidia