Fifth Amendment To Credit Agreement Dated as of October 21, 2021 Among Oasis Petroleum Inc., as Parent, Oasis Petroleum North America LLC, As Borrower, the other Credit Parties party hereto, Wells Fargo Bank, N.A., as Administrative Agent, Issuing...

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Fifth Amendment To Credit Agreement Dated as of October 21, 2021 Among Oasis Petroleum Inc., as Parent, Oasis Petroleum North America LLC, As Borrower, the other Credit Parties party hereto, Xxxxx Fargo Bank, N.A., as Administrative Agent, Issuing Bank and Swingline Lender and The Lenders Party Hereto

FIFTH AMENDMENT TO
CREDIT AGREEMENT

THIS FIFTH AMENDMENT TO CREDIT AGREEMENT (this “Fifth Amendment”) dated as of October 21, 2021, is among: Oasis Petroleum Inc., a Delaware corporation (the “Parent”); Oasis Petroleum LLC, a Delaware limited liability company (“OP LLC”), Oasis Petroleum North America LLC, a Delaware limited liability company (the “Borrower”); the other Guarantors listed on the signature pages hereto; each of the Lenders party hereto; and Xxxxx Fargo Bank, N.A., as administrative agent for the Lenders (in such capacity, together with its successors in such capacity, the “Administrative Agent”) and as the issuing bank (in such capacity, the “Issuing Bank”).

R E C I T A L S:

A. The Parent, OP LLC, the Borrower, the Administrative Agent and the Lenders are parties to that certain Credit Agreement dated as of November 19, 2020 (as amended, amended and restated, restated, supplemented or otherwise modified, the “Credit Agreement”), pursuant to which the Lenders have made certain extensions of credit available to and on behalf of the Borrower.

B. The Parent, the Borrower, the Administrative Agent, the Issuing Bank and the Lenders party hereto desire to amend certain provisions of the Credit Agreement as set forth herein effective as of the Fifth Amendment Effective Date (as defined below), subject to the terms and conditions hereof.

NOW, THEREFORE, in consideration of the premises and the mutual covenants herein contained, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

Section 1. Defined Terms. Each capitalized term used herein but not otherwise defined herein has the meaning given such term in the Credit Agreement, as amended by this Fifth Amendment. Unless otherwise indicated, all section references in this Fifth Amendment refer to sections of the Credit Agreement.

Section 2. Amendments to Credit Agreement. In reliance on the representations, warranties, covenants and agreements contained in this Fifth Amendment, and subject to the conditions precedent contained in Section 3 hereof, effective as of the Fifth Amendment Effective Date, the Credit Agreement shall be amended as follows:

2.1 Amendments to Section 1.02.

(a) Each of the following definitions is hereby amended and restated in its entirety to read as follows:

“Aggregate Elected Commitment Amounts” at any time shall equal the sum of the Elected Commitments, as the same may be increased,

reduced or terminated pursuant to Section 2.06(c). As of the Fifth Amendment Effective Date, the Aggregate Elected Commitment Amounts are equal to $450,000,000.

“Agreement” means this Credit Agreement, as amended by the First Amendment, the Second Amendment, the Third Amendment, the Fourth Amendment and the Fifth Amendment, and as the same may from time to time be further amended, restated, amended and restated, supplemented or modified.

“Benchmark Replacement” means, for any Available Tenor,

(a) with respect to any Benchmark Transition Event or Early Opt-in Election, the first alternative set forth in the order below that can be determined by the Administrative Agent for the applicable Benchmark Replacement Date:

(1) the sum of: (A) Term SOFR and (B) the related Benchmark Replacement Adjustment;

(2) the sum of: (A) Daily Simple SOFR and (B) the related Benchmark Replacement Adjustment;

(3) the sum of: (A) the alternate benchmark rate that has been selected by the Administrative Agent and the Borrower as the replacement for the then-current Benchmark for the applicable Corresponding Tenor giving due consideration to (i) any selection or recommendation of a replacement benchmark rate or the mechanism for determining such a rate by the Relevant Governmental Body or (ii) any evolving or then-prevailing market convention for determining a benchmark rate as a replacement for the then-current Benchmark for Dollar-denominated syndicated credit facilities at such time and (B) the related Benchmark Replacement Adjustment; or

(b) with respect to any Term SOFR Transition Event, the sum of (i) Term SOFR and (ii) the related Benchmark Replacement Adjustment;

provided that, (i) in the case of clause (a)(1), if the Administrative Agent decides that Term SOFR is not administratively feasible for the Administrative Agent, then Term SOFR will be deemed unable to be determined for purposes of this definition and (ii) in the case of clause (a)(1) or clause (b) of this definition, the applicable Unadjusted Benchmark Replacement is displayed on a screen or other information service that publishes such rate from time to time as selected by the Administrative Agent in its reasonable discretion. If the Benchmark

Replacement as determined pursuant to clause (a)(1), (a)(2) or (a)(3) or clause (b) of this definition would be less than the Floor, the Benchmark Replacement will be deemed to be the Floor for the purposes of this Agreement and the other Loan Documents.

“Benchmark Replacement Adjustment” means, with respect to any replacement of the then-current Benchmark with an Unadjusted Benchmark Replacement for any applicable Interest Period and Available Tenor for any setting of such Unadjusted Benchmark Replacement:

(1) for purposes of clauses (a)(1) and (b) of the definition of “Benchmark Replacement,” an amount equal to (A) 0.11448% (11.448 basis points) for an Available Tenor of one-month’s duration, (B) 0.26161% (26.161 basis points) for an Available Tenor of three-months’ duration and (C) 0.42826% (42.826 basis points) for an Available Tenor of six-months’ duration;

(2) for purposes of clause (a)(2) of the definition of “Benchmark Replacement,” an amount equal to 0.26161% (26.161 basis points); and

(3) for purposes of clause (a)(3) of the definition of “Benchmark Replacement,” the spread adjustment, or method for calculating or determining such spread adjustment, (which may be a positive or negative value or zero) that has been selected by the Administrative Agent and the Borrower giving due consideration to (i) any selection or recommendation of a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Available Tenor of such Benchmark with the applicable Unadjusted Benchmark Replacement by the Relevant Governmental Body on the applicable Benchmark Replacement Date or (ii) any evolving or then-prevailing market convention for determining a spread adjustment, or method for calculating or determining such spread adjustment, for the replacement of such Available Tenor of such Benchmark with the applicable Unadjusted Benchmark Replacement for Dollar-denominated syndicated credit facilities.

“Benchmark Replacement Conforming Changes” means, with respect to any Benchmark Replacement, any technical, administrative or operational changes (including changes to the definition of “Alternate Base Rate,” the definition of “Business Day,” the definition of “Interest Period,” timing and frequency of determining rates and making payments of interest, timing of borrowing requests or prepayment, conversion or continuation notices, length of lookback periods, the applicability of breakage provisions, and other technical, administrative or operational matters) that the Administrative Agent decides may be appropriate to

reflect the adoption and implementation of such Benchmark Replacement and to permit the administration thereof by the Administrative Agent in a manner substantially consistent with market practice (or, if the Administrative Agent decides that adoption of any portion of such market practice is not administratively feasible or if the Administrative Agent determines that no market practice for the administration of such Benchmark Replacement exists, in such other manner of administration as the Administrative Agent decides is reasonably necessary in connection with the administration of this Agreement and the other Loan Documents).

“Benchmark Replacement Date” means the earliest to occur of the following events with respect to the then-current Benchmark:

(a) in the case of clause (a) or (b) of the definition of “Benchmark Transition Event,” the later of (i) the date of the public statement or publication of information referenced therein and (ii) the date on which the administrator of such Benchmark (or the published component used in the calculation thereof) permanently or indefinitely ceases to provide all Available Tenors of such Benchmark (or such component thereof);

(b) in the case of clause (c) of the definition of “Benchmark Transition Event,” the date of the public statement or publication of information referenced therein;

(c) in the case of a Term SOFR Transition Event, the date that is thirty (30) days after the Administrative Agent has provided the Term SOFR Notice to the Lenders and the Borrower pursuant to Section 3.03(c)(i)(B); or

(d) in the case of an Early Opt-in Election, the sixth (6th) Business Day after the date notice of such Early Opt-in Election is provided to the Lenders, so long as the Administrative Agent has not received, by 5:00 p.m. (New York City time) on the fifth (5th) Business Day after the date notice of such Early Opt-in Election is provided to the Lenders, written notice of objection to such Early Opt-in Election from Lenders comprising the Majority Lenders.

For the avoidance of doubt, (i) if the event giving rise to the Benchmark Replacement Date occurs on the same day as, but earlier than, the Reference Time in respect of any determination, the Benchmark Replacement Date will be deemed to have occurred prior to the Reference Time for such determination and (ii) the “Benchmark Replacement Date” will be deemed to have occurred in the case of clause (a) or (b) with respect to any Benchmark upon the occurrence of the applicable event or events set forth therein with respect to all then-current Available Tenors of

such Benchmark (or the published component used in the calculation thereof).

“Benchmark Transition Event” means the occurrence of one or more of the following events with respect to the then-current Benchmark:

(a) a public statement or publication of information by or on behalf of the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that such administrator has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof), permanently or indefinitely, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof);

(b) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof), the Board, the Federal Reserve Bank of New York, an insolvency official with jurisdiction over the administrator for such Benchmark (or such component), a resolution authority with jurisdiction over the administrator for such Benchmark (or such component) or a court or an entity with similar insolvency or resolution authority over the administrator for such Benchmark (or such component), which states that the administrator of such Benchmark (or such component) has ceased or will cease to provide all Available Tenors of such Benchmark (or such component thereof) permanently or indefinitely, provided that, at the time of such statement or publication, there is no successor administrator that will continue to provide any Available Tenor of such Benchmark (or such component thereof); or

(c) a public statement or publication of information by the regulatory supervisor for the administrator of such Benchmark (or the published component used in the calculation thereof) announcing that all Available Tenors of such Benchmark (or such component thereof) are no longer representative.

For the avoidance of doubt, a “Benchmark Transition Event” will be deemed to have occurred with respect to any Benchmark if a public statement or publication of information set forth above has occurred with respect to each then-current Available Tenor of such Benchmark (or the published component used in the calculation thereof).

“Benchmark Unavailability Period” means the period (if any) (x) beginning at the time that a Benchmark Replacement Date pursuant to clauses (a) or (b) of that definition has occurred if, at such time, no

Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 3.03(c) and (y) ending at the time that a Benchmark Replacement has replaced the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 3.03(c).

“Early Opt-in Election” means, if the then-current Benchmark is USD LIBOR, the occurrence of:

(a) a notification by the Administrative Agent to (or the request by the Borrower to the Administrative Agent to notify) each of the other parties hereto that at least five currently outstanding Dollar-denominated syndicated credit facilities at such time contain (as a result of amendment or as originally executed) a SOFR-based rate (including SOFR, a term SOFR or any other rate based upon SOFR) as a benchmark rate (and such syndicated credit facilities are identified in such notice and are publicly available for review), and

(b) the joint election by the Administrative Agent and the Borrower to trigger a fallback from USD LIBOR and the provision by the Administrative Agent of written notice of such election to the Lenders.

“SOFR” means, with respect to any Business Day, a rate per annum equal to the secured overnight financing rate for such Business Day published by the SOFR Administrator on the SOFR Administrator’s Website on the immediately succeeding Business Day.

“Term SOFR” means, for the applicable Corresponding Tenor as of the applicable Reference Time, the forward-looking term rate based on SOFR that has been selected or recommended by the Relevant Governmental Body.

“Unadjusted Benchmark Replacement” means the applicable Benchmark Replacement excluding the related Benchmark Replacement Adjustment.

(b) Each of the following definitions is hereby added to Section 1.02 in its appropriate alphabetical order to read as follows:

“Announcements” has the meaning assigned to such term in Section 1.06.

“Available Tenor” means, as of any date of determination and with respect to the then-current Benchmark, as applicable, (a) if the then-current Benchmark is a term rate, any tenor for such Benchmark or (b) otherwise, any payment period for interest calculated with reference to

such Benchmark, as applicable, that is or may be used for determining the length of an Interest Period pursuant to this Agreement as of such date and not including, for the avoidance of doubt, any tenor for such Benchmark that is then-removed from the definition of “Interest Period” pursuant to Section 3.03(c)(iv).

“Benchmark” means, initially, USD LIBOR; provided that if a Benchmark Transition Event, a Term SOFR Transition Event, or an Early Opt-in Election, as applicable, and its related Benchmark Replacement Date have occurred with respect to USD LIBOR or the then-current Benchmark, then “Benchmark” means the applicable Benchmark Replacement to the extent that such Benchmark Replacement has replaced such prior benchmark rate pursuant to Section 3.03(c)(i).

“Corresponding Tenor” with respect to any Available Tenor means, as applicable, either a tenor (including overnight) or an interest payment period having approximately the same length (disregarding business day adjustment) as such Available Tenor.

“Daily Simple SOFR” means, for any day, SOFR, with the conventions for this rate (which will include a lookback) being established by the Administrative Agent in accordance with the conventions for this rate selected or recommended by the Relevant Governmental Body for determining “Daily Simple SOFR” for syndicated business loans; provided, that if the Administrative Agent decides that any such convention is not administratively feasible for the Administrative Agent, then the Administrative Agent may establish another convention in its reasonable discretion.

“FCA” has the meaning assigned to such term in Section 1.06.

“Fifth Amendment” means that certain Fifth Amendment to Credit Agreement, dated as of October 21, 2021 among the Parent, the Borrower, the other Guarantors, the Administrative Agent, the Issuing Bank and the Lenders party thereto.

“Fifth Amendment Effective Date” has the meaning assigned to such term in the Fifth Amendment.

“Floor” means the benchmark rate floor, if any, provided in this Agreement initially (as of the execution of this Agreement, the modification, amendment or renewal of this Agreement or otherwise) with respect to USD LIBOR.

“IBA” has the meaning assigned to such term in Section 1.06.

“Reference Time” with respect to any setting of the then-current Benchmark means (1) if such Benchmark is USD LIBOR, 11:00 a.m. (London time) on the day that is two (2) London Banking Days preceding the date of such setting, and (2) if such Benchmark is not USD LIBOR, the time determined by the Administrative Agent in its reasonable discretion.

“SOFR Administrator” means the Federal Reserve Bank of New York (or a successor administrator of the secured overnight financing rate).

“SOFR Administrator’s Website” means the website of the Federal Reserve Bank of New York, currently at xxxx://xxx.xxxxxxxxxx.xxx, or any successor source for the secured overnight financing rate identified as such by the SOFR Administrator from time to time.

“Term SOFR Notice” means a notification by the Administrative Agent to the Lenders and the Borrower of the occurrence of a Term SOFR Transition Event.

“Term SOFR Transition Event” means the determination by the Administrative Agent that (a) Term SOFR has been recommended for use by the Relevant Governmental Body, (b) the administration of Term SOFR is administratively feasible for the Administrative Agent and (c) a Benchmark Transition Event or an Early Opt-in Election, as applicable, has previously occurred resulting in the replacement of the then-current Benchmark for all purposes hereunder and under any Loan Document in accordance with Section 3.03(c) with a Benchmark Replacement the Unadjusted Benchmark Replacement component of which is not Term SOFR.

“USD LIBOR” means the London interbank offered rate for Dollars.

(c) The definition of “Interest Period” is hereby amended by replacing the phrase “one, two, three or six months” contained therein with the phrase “one, three or six months”.

(d) Each of the following definitions is hereby deleted: “Benchmark Transition Start Date” and “QEP BB Increase”.

2.2 Amendment to Section 1.06. Section 1.06 is hereby amended and restated in its entirety to read as follows:

Section 1.06 Rates. The interest rate on Eurodollar Loans and ABR Loans (when determined by reference to clause (c) of the definition of Alternate

Base Rate) may be determined by reference to the LIBO Rate, which is derived from the London interbank offered rate. The London interbank offered rate is intended to represent the rate at which contributing banks may obtain short-term borrowings from each other in the London interbank market. On March 5, 2021, ICE Benchmark Administration (“IBA”), the administrator of the London interbank offered rate, and the Financial Conduct Authority (the “FCA”), the regulatory supervisor of IBA, announced in public statements (the “Announcements”) that the final publication or representativeness date for the London interbank offered rate for Dollars for: (a) 1-week and 2-month tenor settings will be December 31, 2021 and (b) overnight, 1-month, 3-month, 6-month and 12-month tenor settings will be June 30, 2023. No successor administrator for IBA was identified in such Announcements. As a result, it is possible that commencing immediately after such dates, the London interbank offered rate for such tenors may no longer be available or may no longer be deemed a representative reference rate upon which to determine the interest rate on Eurodollar Loans or ABR Loans (when determined by reference to clause (c) of the definition of Alternate Base Rate). There is no assurance that the dates set forth in the Announcements will not change or that IBA or the FCA will not take further action that could impact the availability, composition or characteristics of any London interbank offered rate. Public and private sector industry initiatives have been and continue, as of the date hereof, to be underway to implement new or alternative reference rates to be used in place of the London interbank offered rate. In the event that the London interbank offered rate or any other then-current Benchmark is no longer available or in certain other circumstances set forth in Section 3.03(c), such Section 3.03(c) provides a mechanism for determining an alternative rate of interest. The Administrative Agent will notify the Borrower, pursuant to Section 3.03(c), of any change to the reference rate upon which the interest rate on Eurodollar Loans and ABR Loans (when determined by reference to clause (c) of the definition of Alternate Base Rate) is based. However, the Administrative Agent does not warrant or accept any responsibility for, and shall not have any liability with respect to, (i) the continuation of, administration of, submission of, calculation of or any other matter related to the London interbank offered rate or other rates in the definition of “LIBO Rate” or with respect to any alternative, successor or replacement rate thereto (including any then-current Benchmark or any Benchmark Replacement), including whether the composition or characteristics of any such alternative, successor or replacement rate (including any Benchmark Replacement), as it may or may not be adjusted pursuant to Section 3.03(b), will be similar to, or produce the same value or economic equivalence of, the LIBO Rate or any other Benchmark, or have the same volume or liquidity as did the London interbank offered rate or any other Benchmark prior to its discontinuance or unavailability, or (ii) the effect, implementation or composition of any Benchmark Replacement Conforming Changes. The Administrative Agent and its Affiliates or other related entities may engage in transactions that affect the calculation of a Benchmark, any alternative, successor or replacement rate (including any Benchmark Replacement) or any relevant

adjustments thereto and such transactions may be adverse to the Borrower. The Administrative Agent may select information sources or services in its reasonable discretion to ascertain any Benchmark, any component definition thereof or rates referenced in the definition thereof, in each case pursuant to the terms of this Agreement, and shall have no liability to the Borrower, any Lender or any other person or entity for damages of any kind, including direct or indirect, special, punitive, incidental or consequential damages, costs, losses or expenses (whether in tort, contract or otherwise and whether at law or in equity), for any error or calculation of any such rate (or component thereof) provided by any such information source or service.

2.3 Amendment to Section 2.07(a). Section 2.07(a) is hereby amended and restated in its entirety to read as follows:

(a) Fifth Amendment Borrowing Base. For the period from and including the Fifth Amendment Effective Date to but excluding the first Redetermination Date following the Fifth Amendment Effective Date, the amount of the Borrowing Base shall be an amount equal to $900,000,000. Notwithstanding the foregoing, the Borrowing Base may be subject to further adjustments in between Scheduled Redeterminations from time to time pursuant to Section 2.07(e), Section 8.13(c), Section 9.12(d), Section 9.12(e) or Section 9.12(f). The redetermination of the Borrowing Base on the Fifth Amendment Effective Date pursuant to this Section 2.07(a) shall constitute the October 1, 2021 Scheduled Redetermination, and the Fifth Amendment shall constitute the New Borrowing Base Notice with respect thereto.

2.4 Amendment to Section 2.07(d). Section 2.07(d) is hereby amended by replacing the reference therein to “Section 2.07(e), Section 2.07(f)” with the phrase “Section 2.07(e)”.

2.5 Amendment to Section 2.07(f). Section 2.07(f) is hereby deleted in its entirety.

2.6 Amendment to Section 3.03(c). Section 3.03(c) is hereby amended and restated in its entirety to read as follows:

(i) Benchmark Replacement.

(A) Notwithstanding anything to the contrary herein or in any other Loan Document (and any Swap Agreement shall be deemed not to be a “Loan Document” for purposes of this Section 3.03(c)) if a Benchmark Transition Event or an Early Opt-in Election, as applicable, and its related Benchmark Replacement Date have occurred prior to the Reference Time in respect of any setting of the then-current Benchmark, then (x) if a Benchmark Replacement is determined in

accordance with clause (a)(1) or (a)(2) of the definition of “Benchmark Replacement” for such Benchmark Replacement Date, such Benchmark Replacement will replace such Benchmark for all purposes hereunder and under any Loan Document in respect of such Benchmark setting and subsequent Benchmark settings without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document and (y) if a Benchmark Replacement is determined in accordance with clause (a)(3) of the definition of “Benchmark Replacement” for such Benchmark Replacement Date, such Benchmark Replacement will replace such Benchmark for all purposes hereunder and under any Loan Document in respect of any Benchmark setting at or after 5:00 p.m. (New York City time) on the fifth (5th) Business Day after the date notice of such Benchmark Replacement is provided to the Lenders without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document so long as the Administrative Agent has not received, by such time, written notice of objection to such Benchmark Replacement from Lenders comprising the Majority Lenders. If an Unadjusted Benchmark Replacement is Daily Simple SOFR, all interest payments will be payable on a quarterly basis.

(B) Notwithstanding anything to the contrary herein or in any other Loan Document, if a Term SOFR Transition Event and its related Benchmark Replacement Date have occurred prior to the Reference Time in respect of any setting of the then-current Benchmark, then the applicable Benchmark Replacement will replace the then-current Benchmark for all purposes hereunder or under any Loan Document in respect of such Benchmark setting and subsequent Benchmark settings, without any amendment to, or further action or consent of any other party to, this Agreement or any other Loan Document; provided that this clause (B) shall not be effective unless the Administrative Agent has delivered to the Lenders and the Borrower a Term SOFR Notice. For the avoidance of doubt, the Administrative Agent shall not be required to deliver a Term SOFR Notice after a Term SOFR Transition Event and may elect or not elect to do so in its sole discretion.

(ii) Benchmark Replacement Conforming Changes. In connection with the implementation of a Benchmark Replacement, the Administrative Agent will have the right to make Benchmark Replacement Conforming Changes from time to time and, notwithstanding anything to the contrary herein or in any other Loan Document, any amendments implementing such Benchmark Replacement Conforming Changes will become effective without any further action or consent of any other party to this Agreement or any other Loan Document.

(iii) Notices; Standards for Decisions and Determinations. The Administrative Agent will promptly notify the Borrower and the Lenders of (A) any occurrence of a Benchmark Transition Event, a Term SOFR Transition Event or an Early Opt-in Election, as applicable, and its related Benchmark Replacement

Date, (B) the implementation of any Benchmark Replacement, (C) the effectiveness of any Benchmark Replacement Conforming Changes, (D) the removal or reinstatement of any tenor of a Benchmark pursuant to Section 3.03(c)(iv) below and (E) the commencement or conclusion of any Benchmark Unavailability Period. Any determination, decision or election that may be made by the Administrative Agent or, if applicable, any Lender (or group of Lenders) pursuant to this Section 3.03(c), including any determination with respect to a tenor, rate or adjustment or of the occurrence or non-occurrence of an event, circumstance or date and any decision to take or refrain from taking any action or any selection, will be conclusive and binding absent manifest error and may be made in its or their sole discretion and without consent from any other party to this Agreement or any other Loan Document, except, in each case, as expressly required pursuant to this Section 3.03(c).

(iv) Unavailability of Tenor of Benchmark. Notwithstanding anything to the contrary herein or in any other Loan Document, at any time (including in connection with the implementation of a Benchmark Replacement), (A) if the then-current Benchmark is a term rate (including Term SOFR or USD LIBOR) and either (1) any tenor for such Benchmark is not displayed on a screen or other information service that publishes such rate from time to time as selected by the Administrative Agent in its reasonable discretion or (2) the regulatory supervisor for the administrator of such Benchmark has provided a public statement or publication of information announcing that any tenor for such Benchmark is or will be no longer representative, then the Administrative Agent may modify the definition of “Interest Period” for any Benchmark settings at or after such time to remove such unavailable or non-representative tenor and (B) if a tenor that was removed pursuant to clause (A) above either (1) is subsequently displayed on a screen or information service for a Benchmark (including a Benchmark Replacement) or (2) is not, or is no longer, subject to an announcement that it is or will no longer be representative for a Benchmark (including a Benchmark Replacement), then the Administrative Agent may modify the definition of “Interest Period” for all Benchmark settings at or after such time to reinstate such previously removed tenor.

(v) Benchmark Unavailability Period. Upon the Borrower’s receipt of notice of the commencement of a Benchmark Unavailability Period, the Borrower may revoke any request for a borrowing of, conversion to or continuation of Eurodollar Loans to be made, converted or continued during any Benchmark Unavailability Period and, failing that, the Borrower will be deemed to have converted any such request into a request for a borrowing of or conversion to ABR Loans. During any Benchmark Unavailability Period or at any time that a tenor for the then-current Benchmark is not an Available Tenor, the component of the Alternate Base Rate based upon the then-current Benchmark or such tenor for such Benchmark, as applicable, will not be used in any determination of the Alternate Base Rate.

(xx) Xxxxxx Xxxxxxxxx Offered Rate Benchmark Transition Event. On March 5, 2021, the IBA, the administrator of the London interbank offered rate, and the FCA, the regulatory supervisor of the IBA, made the Announcements that the final publication or representativeness date for Dollars for (I) 1-week and 2-month London interbank offered rate tenor settings will be December 31, 2021 and (II) overnight, 1-month, 3-month, 6-month and 12-month London interbank offered rate tenor settings will be June 30, 2023. No successor administrator for the IBA was identified in such Announcements. The parties hereto agree and acknowledge that the Announcements resulted in the occurrence of a Benchmark Transition Event with respect to the London interbank offered rate pursuant to the terms of this Agreement and that any obligation of the Administrative Agent to notify any parties of such Benchmark Transition Event pursuant to clause (iii) of this Section 3.03(c) shall be deemed satisfied.

Section 3. Conditions Precedent. This Fifth Amendment shall become effective as of the date when each of the following conditions is satisfied (or waived in accordance with Section 12.02 of the Credit Agreement) (the “Fifth Amendment Effective Date”):

3.1 Executed Counterparts of Fifth Amendment. The Administrative Agent shall have received from the Borrower, each Guarantor and each Lender (in such number as may be requested by the Administrative Agent) executed counterparts of this Fifth Amendment signed on behalf of such Person.

3.2 Fees and Expenses. The Administrative Agent shall have received all fees and other amounts due and payable by the Credit Parties on or prior to the Fifth Amendment Effective Date, including, to the extent invoiced at least two (2) Business Days prior to the Fifth Amendment Effective Date, reimbursement or payment of all reasonable out-of-pocket expenses required to be reimbursed or paid by the Borrower pursuant to the Credit Agreement.

3.3 No Default. No Default, Event of Default or Borrowing Base Deficiency shall have occurred and be continuing as of the Fifth Amendment Effective Date prior to and after giving effect to the terms of this Fifth Amendment.

3.4 QEP Acquisition. The QEP Acquisition shall have been (or contemporaneously with the Fifth Amendment Effective Date shall be) consummated in accordance with the terms of the QEP Acquisition Agreement, and in connection therewith the Borrower shall have acquired at least 95% of the total value of the QEP Acquisition Properties. The Administrative Agent shall have received an officer’s certificate from the Borrower, certifying (A) that the QEP Acquisition has been consummated in accordance with applicable law and the terms of the QEP Acquisition Agreement without giving effect to any waiver, modification or consent thereunder that is materially adverse to the interests of the Lenders (in their capacities as such), and in connection therewith, the Borrower has acquired at least 95% of the total value of the QEP Acquisition Properties, (B) as to the final purchase price for the QEP Acquisition Properties after giving effect to all adjustments as of the closing date contemplated by the QEP Acquisition Documents and specifying, by category, the amount of such adjustment; (C) that attached thereto is a true and complete list of the Properties that have been excluded

from the QEP Acquisition pursuant to the terms of the QEP Acquisition Documents and (D) that true and complete executed copies of all QEP Acquisition Documents have been delivered to the Administrative Agent.

3.5 Lien Releases. The Administrative Agent shall have received (A) evidence reasonably satisfactory to it that all Liens on the QEP Acquisition Properties (other than Excepted Liens) have been released or terminated, subject only to the filing of applicable terminations, releases or assignments and (B) duly executed recordable releases and terminations with respect thereto, in form and substance reasonably satisfactory to the Administrative Agent.

3.6 Mortgages. The Administrative Agent shall have received duly executed (and notarized where required) deeds of trust and/or mortgages or supplements to existing deeds of trust and/or mortgages in form reasonably satisfactory to the Administrative Agent, to the extent necessary so that the Mortgaged Properties represent at least 90% of the total value of the proved Oil and Gas Properties evaluated in the most recently delivered Reserve Report and the QEP Acquisition Reserve Report (on a combined basis).

3.7 Title Information. The Administrative Agent shall have received, together with title information previously delivered to the Administrative Agent, title information reasonably satisfactory to the Administrative Agent setting forth the status of title to at least 90% of the total value of the Proved Reserves evaluated in the most recently delivered Reserve Report and the QEP Acquisition Reserve Report (on a combined basis).

The Administrative Agent is hereby authorized and directed to declare the Fifth Amendment Effective Date to have occurred when it has received documents confirming or certifying, to the satisfaction of the Administrative Agent, compliance with the conditions set forth in this Section 3 or the waiver of such conditions as permitted hereby. Such declaration shall be final, conclusive and binding upon all parties to the Credit Agreement for all purposes.

Section 4. Miscellaneous.

4.1 Confirmation and Effect. The provisions of the Credit Agreement, as amended by this Fifth Amendment, shall remain in full force and effect following the effectiveness of this Fifth Amendment. Each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof”, “herein” or any other word or words of similar import shall mean and be a reference to the Credit Agreement as amended hereby, and each reference in any other Loan Document to the Credit Agreement or any word or words of similar import shall be and mean a reference to the Credit Agreement as amended hereby.

4.2 No Waiver. Neither the execution by the Administrative Agent or the Lenders of this Fifth Amendment, nor any other act or omission by the Administrative Agent or the Lenders or their officers in connection herewith, shall be deemed a waiver by the Administrative Agent or the Lenders of any Defaults or Events of Default which may exist, which may have occurred prior to the date of the effectiveness of this Fifth Amendment or which may occur in the future under the Credit Agreement and/or the other Loan Documents. Similarly, nothing contained in this Fifth Amendment shall directly or indirectly in any way

whatsoever either: (a) impair, prejudice or otherwise adversely affect the Administrative Agent’s or the Lenders’ right at any time to exercise any right, privilege or remedy in connection with the Loan Documents with respect to any Default or Event of Default, (b) except to the extent expressly set forth herein, amend or alter any provision of the Credit Agreement, the other Loan Documents, or any other contract or instrument, or (c) constitute any course of dealing or other basis for altering any obligation of the Borrower or any right, privilege or remedy of the Administrative Agent or the Lenders under the Credit Agreement, the other Loan Documents, or any other contract or instrument.

4.3 Ratification and Affirmation; Representations and Warranties. Each Credit Party hereby (a) acknowledges the terms of this Fifth Amendment; (b) ratifies and affirms its obligations under, and acknowledges its continued liability under, each Loan Document to which it is a party and agrees that each Loan Document to which it is a party remains in full force and effect as expressly amended hereby and (c) represents and warrants to the Lenders that as of the date hereof, after giving effect to the execution of this Fifth Amendment: (i) all of the representations and warranties contained in each Loan Document to which it is a party are true and correct in all material respects (or, if already qualified by materiality, Material Adverse Effect or a similar qualification, true and correct in all respects), except to the extent any such representations and warranties are expressly limited to an earlier date, in which case, such representations and warranties shall continue to be true and correct in all material respects (or, if already qualified by materiality, Material Adverse Effect or a similar qualification, true and correct in all respects) as of such specified earlier date and (ii) no Default or Event of Default has occurred and is continuing.

4.4 Counterparts. This Fifth Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, and all of such counterparts taken together shall be deemed to constitute one and the same instrument. Delivery of this Fifth Amendment by facsimile or other electronic transmission (e.g., “pdf” or “tif”), including via Docusign or other similar electronic signature technology shall be effective as delivery of a manually executed counterpart hereof.

4.5 No Oral Agreement. This Fifth Amendment, the Credit Agreement and the other Loan Documents executed in connection herewith and therewith represent the final agreement between the parties and may not be contradicted by evidence of prior, contemporaneous, or unwritten oral agreements of the parties. There are no subsequent oral agreements between the parties.

4.6 GOVERNING LAW. THIS FIFTH AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

4.7 Payment of Expenses. In accordance with Section 12.03 of the Credit Agreement, the Borrower agrees to pay or reimburse the Administrative Agent for all of its reasonable out-of-pocket costs and reasonable expenses incurred in connection with this Fifth Amendment, any other documents prepared in connection herewith and the transactions

contemplated hereby, including, without limitation, the reasonable fees and disbursements of Xxxx Xxxxxxxx LLP, as counsel to the Administrative Agent.

4.8 Severability. Any provision of this Fifth Amendment which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction.

4.9 Successors and Assigns. This Fifth Amendment shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns.

4.10 Loan Document. This Fifth Amendment shall constitute a “Loan Document” under and as defined in Section 1.02 of the Credit Agreement.

4.11 No Novation. The parties hereto agree that this Fifth Amendment does not in any way constitute a novation of the existing Credit Agreement, but is an amendment of the Credit Agreement.

[Signatures Begin Next Page]

IN WITNESS WHEREOF, the parties hereto have caused this Fifth Amendment to be duly executed as of the date first written above.

BORROWER: OASIS PETROLEUM NORTH AMERICA LLC

By: /s/ Michael Lou _________ ____

Name: Michael Lou

Title: Executive Vice President and Chief
Financial Officer

GUARANTORS: OASIS PETROLEUM INC.
OASIS PETROLEUM LLC
OASIS PETROLEUM MARKETING LLC
OASIS WELL SERVICES LLC
OASIS MIDSTREAM SERVICES LLC
OMS HOLDINGS LLC
OASIS PETROLEUM PERMIAN LLC

By: /s/ Michael Lou _________ ____

Name: Michael Lou

Title: Executive Vice President and Chief Financial Officer

OMP GP LLC

By:    /s/ Michael Lou _________ ____
Name:    Michael Lou
Title:    President

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

ADMINISTRATIVE AGENT,

SWINGLINE LENDER,

ISSUING BANK AND LENDER: XXXXX FARGO BANK, N.A.,
as Administrative Agent, Issuing Bank, a Swingline Lender and a Lender

By:    /s/ Xxxxxx Xxx _________ ____
Name:    Xxxxxx Xxx
Title:    Director

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

LENDERS: CITIBANK, N.A., as a Lender

By:    /s/ Cliff Vaz_________________________
Name:    Xxxxx Xxx
Title:    Vice President

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

JPMORGAN CHASE BANK, N.A.,
as a Lender

By:    /s/ Anson Williams____________________
Name:    Xxxxx Xxxxxxxx
Title:    Authorized Officer

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

ROYAL BANK OF CANADA, as a Lender

By:    /s/ Xxx X. Sartain______________________
Name:    Xxx X. Xxxxxxx
Title:    Authorized Signatory

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

CAPITAL ONE, NATIONAL ASSOCIATION,
as a Lender

By:    /s/ Xxxxxxxxxxx Kuna___________________
Name:    Xxxxxxxxxxx Xxxx
Title:    Senior Director

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK BRANCH,
as a Lender

By:    /s/ Xxxxx Nelson______________________
Name:    Xxxxx Xxxxxx
Title:    Authorized Signatory

By:    /s/ Xxxxx X. Danvers___________________
Name:    Xxxxx X. Danvers
Title:    Authorized Signatory

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

CITIZENS BANK, N.A., as a Lender

By:    /s/ Hernando Garcia___________________
Name:    Xxxxxxxx Xxxxxx
Title:    Director

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

ZIONS BANCORPORATION, N.A. DBA
AMEGY BANK, as a Lender

By:    /s/ Xxxx Moffitt_______________________
Name:    Xxxx Xxxxxxx
Title:    Senior Vice President

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

BOKF, NA dba Bank of Texas, as a Lender

By:    /s/ Xxxxx Salazar______________________
Name:    Xxxx Xxxxxxx
Title:    SVP, Manager

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

TRUIST BANK, as a Lender

By:    /s/ Xxxxx Giordano____________________
Name:    Xxxxx Xxxxxxxx
Title:    Managing Director

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

COMERICA BANK, as a Lender

By:    /s/ Xxxxxxx X. Geidel___________________
Name:    Xxxxxxx X. Xxxxxx
Title:    Assistant Vice President

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

REGIONS BANK, as a Lender

By: /s/ Katie Hammons____________________
Name: Xxxxx Xxxxxxx
Title: Vice President

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

XXXXXXX SACHS BANK USA, as a Lender

By:    /s/ Xxx Martis________________________
Name:    Xxx Xxxxxx
Title:    Authorized Signatory

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

MIZUHO BANK, LTD., as a Lender

By: /s/ Xxxxxx Sacks______________________
Name: Xxxxxx Xxxxx
Title: Executive Director

Signature Page to Fifth Amendment to Credit Agreement
(Oasis Petroleum North America LLC)

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Fifth Amendment To Credit Agreement Dated as of October 21, 2021 Among Oasis Petroleum Inc., as Parent, Oasis Petroleum North America LLC, As Borrower, the other Credit Parties party hereto, Wells Fargo Bank, N.A., as Administrative Agent, Issuing...

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