OVV Ovintiv Inc

Exhibit 1.1

Ovintiv Inc.

15,000,000 Shares of Common Stock

Underwriting Agreement

September 11, 2023

J.P. Morgan Securities LLC (the “Underwriter” or “you”)

c/o J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179

Ladies and Gentlemen:

NMB Stock Trust, a Delaware statutory trust (the “Selling Stockholder”) and a stockholder of Ovintiv Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated in this agreement (this “Agreement”), to sell to the Underwriter an aggregate of 15,000,000 shares (the “Securities”) of common stock, par value $0.01 per share, of the Company (“Stock”) (including the Repurchase Shares (as defined below)) at a purchase price per share equal to the Purchase Price (as defined below).

Subject to the sale of the Securities by the Selling Stockholder to the Underwriter in compliance with the terms of this Agreement, the Underwriter proposes to sell to the Company in accordance with Section 3 hereof, and the Company proposes to purchase in accordance with Section 3 hereof (the “Share Repurchase”) from the Underwriter 1,000,000 shares of Stock (the “Repurchase Shares”) at the Purchase Price.

1. The Company represents and warrants to, and agrees with, the Underwriter that:

(a) An “automatic shelf registration statement” as defined under Rule 405 under the Securities Act of 1933, as amended (the “Act”), on Form S-3 (File No. 333-273488) in respect of the Securities has been filed with the Securities and Exchange Commission (the “Commission”) not earlier than three years prior to the date hereof; such registration statement, and any post-effective amendment thereto, became effective on filing; and no stop order suspending the effectiveness of such registration statement or any part thereof has been issued and no proceeding for that purpose or pursuant to Section 8A of the Act has been initiated or, to the Company’s knowledge, threatened by the Commission, and no notice of objection of the Commission to the use of such registration statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Act has been received by the Company (the base prospectus filed as part of such registration statement, in the form in which it has most recently been filed with the Commission on or prior to the date of this Agreement, is hereinafter called the “Basic Prospectus”; any preliminary prospectus (including any preliminary prospectus supplement) relating to the Securities filed with the Commission

pursuant to Rule 424(b) under the Act is hereinafter called a “Preliminary Prospectus”; the various parts of such registration statement, including all exhibits thereto and including any prospectus supplement relating to the Securities that is filed with the Commission and deemed by virtue of Rule 430B to be part of such registration statement, each as amended at the time such part of the registration statement became effective, are hereinafter collectively called the “Registration Statement”; the Basic Prospectus, as amended and supplemented immediately prior to the Applicable Time (as defined in Section 1(c) hereof), is hereinafter called the “Pricing Prospectus”; the form of the final prospectus relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act in accordance with Section 6(a) hereof is hereinafter called the “Prospectus”; any reference herein to the Basic Prospectus, the Pricing Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein pursuant to Item 12 of Form S-3 under the Act, as of the date of such prospectus; any reference to any amendment or supplement to the Basic Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include any post-effective amendment to the Registration Statement, any prospectus supplement relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act and any documents filed under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and incorporated therein, in each case after the date of the Basic Prospectus, such Preliminary Prospectus, or the Prospectus, as the case may be; any reference to any amendment to the Registration Statement shall be deemed to refer to and include any annual report of the Company filed pursuant to Section 13(a) or 15(d) of the Exchange Act after the effective date of the Registration Statement that is incorporated by reference in the Registration Statement; and any “issuer free writing prospectus” as defined in Rule 433 under the Act relating to the Securities is hereinafter called an “Issuer Free Writing Prospectus”);

(b) (A) No order preventing or suspending the use of any Preliminary Prospectus or any Issuer Free Writing Prospectus has been issued by the Commission, and (B) each Preliminary Prospectus, at the time of filing thereof, conformed in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder, and did not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with the Underwriter Information or Selling Stockholder Information (each as defined below);

(c) For the purposes of this Agreement, the “Applicable Time” is 9:00 a.m. (New York City time) on the date of this Agreement. The Pricing Prospectus, as supplemented by the information listed on Schedule I(c) hereto, taken together (collectively, the “Pricing Disclosure Package”) as of the Applicable Time, did not, and as of the Time of Delivery (as defined in Section 4 of this Agreement), will not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; and each Issuer Free Writing Prospectus, as of its issue date and through the completion of the offer and sale of the Securities or until any earlier date that the Company notified or notifies the Underwriter as described in Section 7(c) of this Agreement, did not and does not conflict with the information contained in the Registration Statement, the Pricing Prospectus or the Prospectus, and each Issuer Free Writing Prospectus, as supplemented

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by and taken together with the Pricing Disclosure Package as of the Applicable Time, did not, and as of the Time of Delivery, subject to Section 7(c), will not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with the Underwriter Information or Selling Stockholder Information;

(d) The documents incorporated by reference in the Pricing Prospectus and the Prospectus, when they became effective or were filed with the Commission, as the case may be, conformed in all material respects to the requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder, and none of such documents contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; any further documents so filed and incorporated by reference in the Pricing Prospectus and the Prospectus or any further amendment or supplement thereto, when such documents become effective or are filed with the Commission, as the case may be, will conform in all material respects to the requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with the Underwriter Information or the Selling Stockholder Information; and no such documents were filed with the Commission since the Commission’s close of business on the business day immediately prior to the date of this Agreement and prior to the execution of this Agreement, except as set forth on Schedule I(b) hereto;

(e) The Registration Statement conforms, and the Prospectus and any further amendments or supplements to the Registration Statement and the Prospectus will conform, in all material respects to the applicable requirements of the Act and the rules and regulations of the Commission thereunder and do not and will not, as of the applicable effective date as to each part of the Registration Statement, as of the applicable filing date as to the Prospectus and any amendment or supplement thereto, and as of the Time of Delivery, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with the Underwriter Information or the Selling Stockholder Information;

(f) Neither the Company nor any of its subsidiaries has, since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus and the Prospectus, (i) sustained any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree or (ii) entered into any transaction or agreement (other than in the ordinary course of business) that is material to the Company and its subsidiaries taken as a

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whole or incurred any liability or obligation, direct or contingent, (other than in the ordinary course of business) that is material to the Company and its subsidiaries taken as a whole, in each case otherwise than as set forth or contemplated in the Pricing Prospectus; and, since the respective dates as of which information is given in the Registration Statement and the Pricing Prospectus, there has not been (x) any material change in the capital stock (other than as a result of (i) the exercise, if any, of stock options, restricted share units, performance share units or restricted stock or the award, if any, of stock options, restricted share units, performance share units or restricted stock in the ordinary course of business pursuant to the Company’s equity plans that are described in the Pricing Prospectus and the Prospectus or (ii) the issuance, if any, of stock upon conversion of Company securities as described in the Pricing Prospectus and the Prospectus) or long term debt of the Company or any of its subsidiaries or (y) any Material Adverse Effect (as defined below). As used in this Agreement, “Material Adverse Effect” shall mean any material adverse change or effect, or any development involving a prospective material adverse change or effect, in or affecting (i) the business, properties, financial position, stockholders’ equity or results of operations of the Company and its subsidiaries, taken as a whole, except as set forth or contemplated in the Pricing Prospectus and the Prospectus, or (ii) the ability of the Company to perform its obligations under this Agreement, including the issuance and sale of the Securities, or to consummate the transactions contemplated in the Pricing Prospectus and the Prospectus;

(g) Except as set forth or contemplated in the Pricing Prospectus and the Prospectus, the Company and its subsidiaries have (i) good and defensible title to all of the interests in oil and gas properties underlying the Company’s estimates of its net proved reserves contained in the Pricing Prospectus and the Prospectus and (ii) good and marketable title to all other real and personal property and good owned by them, in each case free and clear of all liens, encumbrances and defects except such as (x) liens and encumbrances under operating agreements, unitization and pooling agreements, production sales contracts, farmout agreements and other oil and gas exploration, participation and production agreements, in each case that secure payment of amounts not yet due and payable for the performance of other unmatured obligations and are of a scope and nature customary in the oil and gas industry or arise in connection with drilling and production operations or (y) do not materially affect the value of such property and do not interfere, in any material respect, with the use made and proposed to be made of such property by the Company and its subsidiaries; and any real property and buildings held under lease by the Company and its subsidiaries are held by them under valid, subsisting and enforceable leases, with such exceptions as are not material and do not materially interfere with the use made and proposed to be made of such property and buildings by the Company and its subsidiaries;

(h) Each of the Company and each “significant subsidiary” of the Company as defined in Rule 1-02(w) of Regulation S-X of the Act (each a “Significant Subsidiary”) has been (i) duly organized or formed and is validly existing and in good standing under the laws of its jurisdiction of organization, with power and authority (corporate and other) to own its properties and conduct its business as described in the Pricing Prospectus, and (ii) duly qualified as a foreign corporation or other form of entity for the transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or leases properties or conducts any business so as to require such qualification, except, in the case of this clause (ii), where the failure to be so qualified or in good standing would not reasonably be expected to, individually or in the aggregate, have a Material Adverse Effect;

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(i) The Company has an authorized capitalization as set forth in the Pricing Prospectus and the Prospectus and all of the issued shares of capital stock of the Company, including the Securities to be sold by the Selling Stockholder, have been duly and validly authorized and issued and are fully paid and non-assessable and conform to the description of the Securities contained in the Pricing Prospectus and the Prospectus; and all of the issued shares of capital stock of each Significant Subsidiary that is a corporation, all of the issued and outstanding partnership interests of each Significant Subsidiary that is a limited or general partnership and all of the issued and outstanding limited liability company interests, membership interests or other similar interests of each Significant Subsidiary that is a limited liability company have been duly and validly authorized and issued, are fully paid and non-assessable and (except, in the case of any foreign subsidiary, for directors’ qualifying shares) are owned directly or indirectly by the Company, free and clear of all liens, encumbrances and defects except as set forth or contemplated in the Pricing Prospectus;

(j) The sale of the Securities, the Share Repurchase and the compliance by the Company with this Agreement and the consummation of the transactions herein contemplated in this Agreement and the Pricing Prospectus will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, as applicable, (i) any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, except, in the case of this clause (i) for such defaults, breaches, or violations that would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect, (ii) the certificate of incorporation or by-laws (or other applicable organizational document) of the Company or any of its subsidiaries, or (iii) any statute or any judgment, order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties except, in the case of this clause (iii) for such defaults, breaches, or violations that would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the sale of the Securities or the consummation by the Company of the transactions contemplated by this Agreement, except such as have been obtained under the Act and for such consents, approvals, authorizations, orders, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Underwriter;

(k) The completion of the Share Repurchase is exempt from, or not subject to, applicable Canadian securities laws;

(l) Neither the Company nor any of its subsidiaries is (i) in violation of its certificate of incorporation or by-laws (or other applicable organization document), (ii) in violation of any statute or any judgment, order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, or (iii) in default in the performance or observance of any obligation, agreement, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which it is a party or by which it or any of its properties may be bound, except, in the case of the foregoing clauses (i) (with respect to subsidiaries of the Company that are not Significant Subsidiaries), (ii) and (iii), for such defaults as would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect;

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(m) The statements set forth in the Pricing Prospectus and the Prospectus under the caption “Description of Common Stock”, insofar as they purport to constitute a summary of the terms of the Securities, under the caption “U.S. Federal Income Tax Considerations”, and under the caption “Underwriting”, insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate, complete and fair in all material respects;

(n) Other than as set forth in the Pricing Prospectus, there are no legal, governmental or regulatory investigations, actions, demands, claims, suits, arbitrations, inquiries or proceedings (“Actions”) pending to which the Company or any of its subsidiaries or, to the Company’s knowledge, any officer or director of the Company is a party or of which any property or assets of the Company or any of its subsidiaries or, to the Company’s knowledge, any officer or director of the Company is the subject which, if determined adversely to the Company or any of its subsidiaries (or such officer or director), would individually or in the aggregate reasonably be expected to have a Material Adverse Effect; and, to the Company’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or others; there are no current or pending Actions that are required under the Act to be described in the Registration Statement or the Pricing Prospectus that are not so described therein and there are no contracts or other documents that are required under the Act to be filed as exhibits to the Registration Statement or described in the Registration Statement, the Pricing Prospectus that are not so filed as exhibits to the Registration Statement or described in the Registration Statement and the Pricing Prospectus;

(o) The Company is not, and after giving effect to the offering and sale of the Securities (including the Share Repurchase), an “investment company”, as such term is defined in the Investment Company Act of 1940, as amended;

(p) (A) (i) At the time of filing the Registration Statement, (ii) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the Exchange Act or form of prospectus), and (iii) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) under the Act) made any offer relating to the Securities in reliance on the exemption of Rule 163 under the Act, the Company was a “well-known seasoned issuer” as defined in Rule 405 under the Act; and (B) at the time of filing the Registration Statement and any post-effective amendment thereto, at the earliest time thereafter that the Company or any offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) under the Act) of the Securities, and at the date hereof, the Company was not and is not an “ineligible issuer” as defined in Rule 405 under the Act;

(q) (A) PricewaterhouseCoopers LLP (Canada) (“PwC Canada”), who has audited certain financial statements of the Company and its subsidiaries, and has audited the Company’s internal control over financial reporting, is an independent registered public accounting firm as required by the Act and the rules and regulations of the Commission thereunder; (B) to the knowledge of the Company, PricewaterhouseCoopers LLP (USA) (“PwC USA”), who has audited certain

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combined financial statements of PetroLegacy Energy II, LLC and certain interests of Peacemaker Royalties, LP and PearlSnap Midstream, LLC, is an independent registered public accounting firm as required by the Act and the rules and regulations of the Commission thereunder; (C) to the knowledge of the Company, Weaver and Tidwell, LLP, who has certified certain financial statements of Piedra Energy III, LLC and Piedra Energy IV, LLC, is an independent registered public accounting firm as required by the Act and the rules and regulations of the Commission thereunder and (D) to the knowledge of the Company, Moss Adams LLP, who has certified certain combined financial statements of Black Swan Permian, LLC and Black Swan Operating, LLC, and certain interests in 1025 Investments, LLC, is an independent registered public accounting firm as required by the Act and the rules and regulations of the Commission thereunder;

(r) The Company maintains a system of internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that (i) complies with the requirements of the Exchange Act, (ii) has been designed by the Company’s principal executive officer and principal financial officer, or under their supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles (“GAAP”) and (iii) is sufficient to provide reasonable assurance that (A) transactions are executed in accordance with management’s general or specific authorization, (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain accountability for assets, (C) access to assets is permitted only in accordance with management’s general or specific authorization, (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences and (E) the interactive data in eXtensible Business Reporting Language included or incorporated by reference in the Registration Statement, the Pricing Prospectus and the Prospectus present fairly the information called for in all material respects and have been prepared in accordance with the Commission’s rules and guidelines applicable thereto; and the Company’s internal control over financial reporting is effective and the Company is not aware of any material weaknesses in its internal control over financial reporting;

(s) Since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus, there has been no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting;

(t) The Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act) that comply with the requirements of the Exchange Act; such disclosure controls and procedures have been designed to ensure that material information relating to the Company and its subsidiaries is made known to the Company’s principal executive officer and principal financial officer by others within those entities; and such disclosure controls and procedures are effective to perform the functions for which they were established;

(u) Except as would not, singly or in the aggregate, reasonably be expected to result in a Material Adverse Change, the Company and each of its subsidiaries have filed all necessary federal, state and foreign income, franchise and other tax returns and have paid all taxes required to be paid by any of them and, if due and payable, any related or similar assessment, fine or penalty levied against any of them, except as may be contested in good faith and by appropriate proceedings and as to which adequate reserves have been established in accordance with U.S. GAAP;

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(v) None of the Company or any of its subsidiaries nor, to the knowledge of the Company, any director, officer, or employee of or, to the Company’s knowledge, any agent, employee, controlled affiliate or other person associated with or acting on behalf of the Company or any of its subsidiaries has (i) made, offered, promised or authorized any unlawful contribution, gift, entertainment or other unlawful expense (or taken any act in furtherance thereof); (ii) made, offered, promised or authorized any direct or indirect unlawful payment; or (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977, as amended, or the rules and regulations thereunder, the Bribery Act 2010 of the United Kingdom or any other applicable anti-corruption, anti-bribery or related law, statute or regulation (collectively, “Anti-Corruption Laws”); the Company and its subsidiaries have conducted their businesses in compliance with Anti-Corruption Laws and have instituted and maintained and will continue to maintain policies and procedures reasonably designed to promote and achieve compliance with such laws;

(w) The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with the requirements of applicable anti-money laundering laws, including, but not limited to, the Bank Secrecy Act of 1970, as amended by the USA PATRIOT ACT of 2001, and the rules and regulations promulgated thereunder, and the applicable anti-money laundering laws of the various jurisdictions in which the Company and its subsidiaries conduct business, the rules and regulations thereunder and any related or similar rules, regulation or guidelines issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Money Laundering Laws is pending or, to the knowledge of the Company, threatened;

(x) None of the Company or any of its subsidiaries nor, to the knowledge of the Company, any director, officer, or employee of or, to the Company’s knowledge, any agent, employee, controlled affiliate or other person associated with or acting on behalf of the Company or any of its subsidiaries is (i) currently the subject or the target of any sanctions administered or enforced by the U.S. Government, including, without limitation, the Office of Foreign Assets Control of the U.S. Department of the Treasury (“OFAC”), or the U.S. Department of State and including, without limitation, the designation as a “specially designated national” or “blocked person,” the European Union, His Majesty’s Treasury, the United Nations Security Council, or other relevant sanctions authority (collectively, “Sanctions”), (ii) located, organized or resident in a country or territory that is the subject or target of Sanctions (a “Sanctioned Jurisdiction”); neither the Company nor any of its subsidiaries is engaged in, or has, at any time in the past five years, engaged in, any dealings or transactions with or involving any individual or entity that was or is, as applicable, at the time of such dealing or transaction, the subject or target of Sanctions or with any Sanctioned Jurisdiction; the Company and its subsidiaries and have instituted, and maintain, policies and procedures designed to promote and achieve continued compliance with Sanctions;

(y) This Agreement has been duly authorized, executed and delivered by the Company, and the Share Repurchase has been duly authorized by the Company;

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(z) The financial statements of the Company, Black Swan Permian, LLC, a Delaware limited liability company, Black Swan Operating, LLC, a Delaware limited liability company, PetroLegacy Energy II, LLC, a Delaware limited liability company, PearlSnap Midstream, LLC, a Texas limited liability company, Piedra Energy III, LLC, a Delaware limited liability company and Piedra Energy IV, LLC, a Delaware limited liability company (collectively, the “Acquired Companies”) and their respective subsidiaries, included in the Registration Statement, the Pricing Prospectus and the Prospectus, together with the related schedules and notes, present fairly, in all material respects, the financial position of the Company and its subsidiaries and the Acquired Companies and their respective subsidiaries at the dates indicated and the statement of operations, stockholders’ equity and cash flows of the Company and its subsidiaries and the Acquired Companies and their respective subsidiaries for the periods specified; said financial statements have been prepared in conformity with GAAP applied on a consistent basis throughout the periods involved. The supporting schedules, if any, present fairly in accordance with GAAP the information required to be stated therein. The selected financial data and the summary financial information included in the Registration Statement, the Pricing Prospectus and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included therein. The pro forma financial information of the Company included or incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus, together with the related schedules and notes thereto, fairly represent in all material respects the information therein, has been prepared in accordance with the applicable requirements of the Act and the Exchange Act, as applicable, and provide a reasonable basis for presenting the significant effects of the transactions and circumstances referred to therein, and the assumptions used in preparation thereof, in the reasonable judgment of the Company’s management and subject to the qualifications therein, are reasonable; the related pro forma adjustments are directly attributable to the transactions or events described therein and give appropriate effect to those assumptions in all material respects; and the pro forma columns therein reflect the proper application of those adjustments to the corresponding historical financial statement in all material respects;

(aa) The Company and its subsidiaries’ information technology assets and equipment, computers, systems, networks, hardware, software, websites, applications, and databases (collectively, “IT Systems”) are adequate for, and operate and perform in all material respects as required in connection with the operation of the business of the Company and its subsidiaries as currently conducted, to the knowledge of the Company, free and clear of all material bugs, errors, defects, Trojan horses, time bombs, malware and other corruptants; the Company and its subsidiaries have implemented and maintained reasonable controls, policies, procedures, and safeguards to maintain and protect their material confidential information and the integrity, continuous operation, redundancy and security of all IT Systems and data (including all personal, personally identifiable, sensitive, confidential or regulated data (“Personal Data”)) used in connection with their respective businesses reasonably consistent with industry standards and practices, or as requested by applicable regulatory standards, and, to the knowledge of the Company, there have been no breaches, violations, outages or unauthorized uses of or accesses to the same, except for those that have been remedied without material cost or liability or the duty to notify any other person, nor any incidents under internal review or investigations relating to the same; the Company and its subsidiaries are presently in compliance with all applicable laws or statutes and all judgments, orders, rules and regulations of any court or arbitrator or governmental or regulatory authority, internal policies and contractual obligations relating to the privacy and security of IT Systems and Personal Data and to the protection of such IT Systems and Personal Data from unauthorized use, access, misappropriation or modification except as would not reasonably be expected to, individually or in the aggregate, result in a Material Adverse Effect;

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(bb) No forward-looking statement (within the meaning of Section 27A of the Act and Section 21E of the Exchange Act) included or incorporated by reference in any of the Registration Statement, the Pricing Prospectus or the Prospectus has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith;

(cc) Nothing has come to the attention of the Company that has caused the Company to believe that the statistical and market-related data included in each of the Registration Statement, the Pricing Prospectus and the Prospectus is not based on or derived from sources that are reliable and accurate in all material respects;

(dd) There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply with any provision of the Sarbanes-Oxley Act of 2002, as amended and the rules and regulations promulgated in connection therewith (the “Sarbanes-Oxley Act”), including Section 402 related to loans and Sections 302 and 906 related to certifications;

(ee) Neither the Company nor any of its subsidiaries has taken or will take, directly or indirectly, any action designed to or that could reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company in connection with the offering of the Securities;

(ff) The Company and its subsidiaries have such permits, licenses, approvals, consents, franchises, certificates of need and other approvals or authorizations of governmental or regulatory authorities (“Permits”) as are necessary under applicable law to enable the Company to conduct its business in the manner described in the Registration Statement, the Pricing Prospectus and the Prospectus, except for failure to have obtained any of the foregoing would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. Neither the Company nor any of its subsidiaries has received notice of any proceedings related to the revocation or modification of any such Permits that, individually or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would reasonably be expected to have a Material Adverse Effect; the Company and its subsidiaries have such consents, easements, rights-of-way or licenses from any person (collectively, “rights-of-way”) as are necessary to enable the Company to conduct its business in the manner described in the Registration Statement, the Pricing Prospectus and the Prospectus, subject to qualifications as may be set forth therein, except where failure to have such rights-of-way would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect;

(gg) Except as disclosed in the Pricing Prospectus and the Prospectus, the Company and its subsidiaries, taken as a whole, are insured against such losses and risks and in such amounts as the Company reasonably believes are prudent and customary in the businesses in which they are engaged and as required by law;

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(hh) The Company and its subsidiaries (i) own or otherwise possess adequate rights to use all material patents, patent applications, trademarks, service marks, trade names, domain names, copyrights and registrations and applications thereof, licenses, know-how, software, systems and technology (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures and other intellectual property) necessary for the conduct of their respective businesses, (ii) to the knowledge of the Company, do not, through the conduct of their respective businesses, infringe, violate or conflict with any such right of others and (iii) have not received any written notice of any claim of infringement, violation or conflict with, any such rights of others that, if determined adversely to the Company or any of its subsidiaries, would, individually or in the aggregate, result in a Material Adverse Effect;

(ii) Each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc., each a reserve engineer that prepared audit letters on certain of estimated net proved oil and natural gas reserves held by the Company and its subsidiaries as of December 31, 2022 and December 31, 2021, was, as of the date of preparation of such audit letter, and is, as of the date hereof, an independent petroleum engineer with respect to the Company;

(jj) The information contained in or incorporated by reference in the Pricing Disclosure Package regarding estimated proved reserves of the Company is based upon the audit letters prepared by each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc. The information provided to each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc. by the Company and its subsidiaries, including, without limitation, information as to: production, costs of operation and development, current prices for production, agreements relating to current and future operations and sales of production, was true and correct in all material respects on the dates that such reports were made. Such information was provided to each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc. in accordance with all customary industry practices;

(kk) The audit letters prepared by each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc. setting forth the estimated proved reserves attributed to the oil and gas properties of the Company accurately reflect in all material respects the ownership interests of the Company in their properties therein. Other than normal production of reserves, intervening market commodity price fluctuations, fluctuations in demand for such products, adverse weather conditions, unavailability or increased costs of rigs, equipment, supplies or personnel, the timing of third party operations and other facts, in each case in the ordinary course of business, and except as disclosed in the Pricing Disclosure Package and the Prospectus, the Company is not aware of any facts or circumstances that would result in a material change in the aggregate net reserves, or the present value of future net cash flows therefrom, as described in the Pricing Disclosure Package and the audit letters; and estimates of such reserves and present values as described in the Pricing Disclosure Package and reflected in the audit letters comply in all material respects with the applicable requirements of the Act and the rules and regulations of the Commission thereunder;

(ll) Except as otherwise disclosed in the Registration Statement, the Pricing Disclosure Package and the Prospectus or otherwise previously waived, no person has the right to require the Company or any of its subsidiaries to register any securities for sale under the Act by reason of the filing of the Registration Statement with the Commission or, to the knowledge of the Company, the sale of the Securities to be sold by the Selling Stockholder hereunder;

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(mm) The Underwriter shall not be responsible for the payment of any fees or expense incurred or payable by the Selling Stockholder;

(nn) The Securities have been duly listed on the New York Stock Exchange (“NYSE”); and

(oo) To the knowledge of the Company, the Selling Stockholder is not a “control person” of the Company as defined under Canadian securities laws.

2. The Selling Stockholder represents and warrants to, and agrees with, the Underwriter and the Company that:

(a) All consents, approvals, authorizations and orders necessary for the execution and delivery by the Selling Stockholder of this Agreement, and for the sale and delivery of the Securities to be sold by the Selling Stockholder hereunder, have been obtained; and the Selling Stockholder has full right, power and authority to enter into this Agreement, and to sell, assign, transfer and deliver the Securities to be sold by the Selling Stockholder hereunder;

(b) The sale of the Securities to be sold by the Selling Stockholder hereunder and the compliance by the Selling Stockholder with this Agreement and the consummation of the transactions herein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any statute, indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which the Selling Stockholder is a party or by which the Selling Stockholder is bound or to which any of the property or assets of the Selling Stockholder is subject, nor will such action result in any violation of the provisions of organizational documents of the Selling Stockholder or any statute or any judgment, order, rule or regulation of any court or governmental agency or body having jurisdiction over the Selling Stockholder or any property or assets of the Selling Stockholder; and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental body or agency is required for the performance by the Selling Stockholder of its obligations under this Agreement and the consummation by the Selling Stockholder of the transactions contemplated by this Agreement in connection with the Securities to be sold by the Selling Stockholder hereunder, except the registration under the Act of the offer and sale of the Securities and such consents, approvals, authorizations, orders, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Underwriter;

(c) The Selling Stockholder has, and immediately prior to the Time of Delivery (as defined in Section 4 hereof) the Selling Stockholder will have, good and valid title to, or a valid “security entitlement” within the meaning of Section 8-501 of the New York Uniform Commercial Code in respect of, the Securities to be sold by the Selling Stockholder hereunder, free and clear of all liens, encumbrances, equities or claims; and, upon delivery of such Securities and payment therefor pursuant hereto, good and valid title to such Securities, free and clear of all liens, encumbrances, equities or claims, will pass to the Underwriter;

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(d) On or prior to the date of the Pricing Prospectus, the Selling Stockholder has executed and delivered to the Underwriter a “lock-up” agreement substantially in the form of Exhibit B hereto;

(e) The Selling Stockholder has not taken and will not take, directly or indirectly, any action that is designed to or that has constituted or might reasonably be expected to cause or result in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities;

(f) To the extent that any statements or omissions made in the Registration Statement, any Preliminary Prospectus, the Prospectus or any amendment or supplement thereto are made in reliance upon and in conformity with written information furnished to the Company by the Selling Stockholder pursuant to Item 7 of Form S–3 expressly for use therein (the “Selling Stockholder Information”), such Registration Statement and Preliminary Prospectus did, and the Prospectus and any further amendments or supplements to the Registration Statement and the Prospectus will, when they become effective or are filed with the Commission, as the case may be, conform in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder and not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading;

(g) In order to document the Underwriter’s compliance with the reporting and withholding provisions of the Tax Equity and Fiscal Responsibility Act of 1982 with respect to the transactions herein contemplated, the Selling Stockholder will deliver to you prior to or at the Time of Delivery a properly completed and executed United States Treasury Department Form W-9 (or other applicable form or statement specified by Treasury Department regulations in lieu thereof);

(h) The Selling Stockholder is not prompted by any material non-public information concerning the Company or any of its subsidiaries that is not disclosed in the Pricing Prospectus to sell its Securities pursuant to this Agreement;

(i) The operations of the Selling Stockholder and its affiliates are and have been conducted at all times in material compliance with all applicable financial recordkeeping and reporting requirements, including (to the extent applicable) those of the Currency and Foreign Transactions Reporting Act of 1970, as amended, Title III of the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (USA PATRIOT Act) to the extent applicable to the Selling Stockholder and its affiliates, and applicable anti-money laundering statutes of jurisdictions where the Selling Stockholder conducts business, if any, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency, and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Selling Stockholder with respect to anti-money laundering laws is pending or, to the best knowledge of the Selling Stockholder, threatened;

(j) Neither the Selling Stockholder nor any of its affiliates, nor, to the knowledge of the Selling Stockholder, any of their respective agents or affiliates or anyone acting on their behalf, is currently the subject or the target of any Sanctions, administered or enforced by the U.S. government (including, without limitation, the OFAC or the U.S. Department of State and including, without limitation, the designation as a “specially designated national” or “blocked person”), the United

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Nations Security Council, the European Union or HM Treasury or other relevant Sanctions, nor is the Selling Stockholder, except as permitted by applicable law, located, organized or resident in a Sanctioned Jurisdiction and, except as permitted by applicable law, the Selling Stockholder will not, directly or indirectly use the proceeds of the offering (i) to fund or facilitate any activities of or business with any joint venture partner, or other person or entity that, at the time of such funding or facilitation, is the subject or target of any Sanctions, (ii) to fund or facilitate any activities of or business in any Sanctioned Jurisdiction or (iii) in any other manner that will result in the violation of Sanctions by any person (including any person participating in the transactions contemplated hereby, whether as underwriter, initial purchaser, advisor, investor or otherwise);

(k) Neither the Selling Stockholder nor, to the Selling Stockholder’s knowledge, any director, officer, employee, agent or affiliate of the Selling Stockholder, acting on behalf of the Selling Stockholder, has taken any action, directly or indirectly, that violated or would result in a violation by such persons of any provision of the FCPA, the U.K. Bribery Act or other anti-bribery or anti-corruption laws (to the extent applicable), including (i) using any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (ii) making or taking an act in furtherance of an offer, promise or authorization of any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds (including to any “foreign official” (as such term is defined in the FCPA) or any political party or official thereof or any candidate for political office); or (iii) making, offering, agreeing, requesting or taking an act in furtherance of any unlawful bribe, rebate, payoff, influence payment, kickback or other unlawful payment or benefit;

(l) The Selling Stockholder does not have any subsidiaries, directors, officers or employees;

(m) The Selling Stockholder is not located in or resident in any “local jurisdiction” (within the meaning of National Instrument 62-104 of the Canadian Securities Administrators – Take-over Bids and Issuer Bids (“NI 62-104”)) and the Securities are not beneficially owned, directly or indirectly, by any person who is resident in any “local jurisdiction” (within the meaning of NI 62-104); and

(n) The Selling Stockholder is not a “control person” of the Company as defined under Canadian securities laws.

3. Subject to the terms and conditions herein set forth, the Selling Stockholder agrees to sell to the Underwriter, and the Underwriter agrees to purchase from the Selling Stockholder, at a purchase price per share of $45.45 (the “Purchase Price”), the Securities.

Subject to the sale of the Securities by the Selling Stockholder to the Underwriter in compliance with the terms of this Agreement, the Underwriter agrees to sell to the Company, and the Company agrees to purchase from the Underwriter, the number of Repurchase Shares at the Purchase Price.

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4. (a) The Securities to be purchased by the Underwriter hereunder, in definitive or book-entry form, and in such authorized denominations and registered in such names as the Underwriter may request upon at least forty-eight hours’ prior notice to the Company and the Selling Stockholder, shall be delivered by or on behalf of the Selling Stockholder to the Underwriter, through the facilities of the Depository Trust Company (“DTC”), for the account of the Underwriter, against payment by or on behalf of the Underwriter of the purchase price therefor by wire transfer of immediately available funds to the account specified by Selling Stockholder to the Underwriter at least forty-eight hours in advance. The Company and the Selling Stockholder will cause the certificates, if any, representing the Securities to be made available for checking and packaging at least twenty-four hours prior to the Time of Delivery (as defined below) at the office of DTC or its designated custodian (the “Designated Office”). The time and date of such delivery and payment shall be 10:00 a.m., New York City time, on September 13, 2023 or such other time and date as the Underwriter and the Company may agree upon in writing. Such time and date are herein called the “Time of Delivery”. In addition, payment of the purchase price for the Repurchase Shares shall be made by the Company to the Underwriter by wire transfer of immediately available funds to the account specified by the Underwriter, against delivery of such Repurchase Shares for the account of the Company at the Time of Delivery.

(b) The documents to be delivered at the Time of Delivery by or on behalf of the parties hereto pursuant to Section 9 hereof, including the cross-receipt for the Securities and any additional documents requested by the Underwriter pursuant to Section 9(n) hereof, will be delivered at the offices of Cravath, Swaine & Moore LLP, 825 Eighth Avenue, New York, NY 10019, and the Securities will be delivered at the Designated Office, all at the Time of Delivery. The final drafts of the documents to be delivered pursuant to the preceding sentence will be available for review by the parties prior to the Time of Delivery.

5. Upon the authorization by the Selling Stockholder of the release of the Securities, the Underwriter proposes to offer the Securities for sale upon the terms and conditions set forth in the Pricing Disclosure Package and the Prospectus.

6. It is understood that the Underwriter proposes to offer the Securities for sale to the public in the United States as set forth in the Pricing Disclosure Package and the Prospectus, and may also offer the Securities for sale to purchasers located or resident in Canada and in certain other jurisdictions. The Company agrees with the Underwriter:

(a) To prepare the Prospectus in a form approved by you and to file such Prospectus pursuant to Rule 424(b) under the Act not later than the Commission’s close of business on the second business day following the date of this Agreement; to make no further amendment or any supplement to the Registration Statement, the Basic Prospectus or the Prospectus prior to the Time of Delivery which shall be disapproved by you promptly after reasonable notice thereof; to advise you, promptly after it receives notice thereof, of the time when any amendment to the Registration Statement has been filed or becomes effective or any amendment or supplement to the Prospectus has been filed and to furnish you with copies thereof; to file promptly all other material required to be filed by the Company with the Commission pursuant to Rule 433(d) under the Act; to file promptly all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of the Prospectus and for so long as the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required in connection with the offering or sale of the Securities; to advise you, promptly after it receives notice thereof, of the issuance by the Commission of any stop order or of any order preventing or suspending the use of

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any Preliminary Prospectus or other prospectus in respect of the Securities, of any notice of objection of the Commission to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Act, of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, of the initiation or threatening of any proceeding for any such purpose, or of any request by the Commission for the amending or supplementing of the Registration Statement or the Prospectus or for additional information; and, in the event of the issuance of any stop order or of any order preventing or suspending the use of any Preliminary Prospectus or other prospectus or suspending any such qualification, to promptly use its best efforts to obtain the withdrawal of such order; and in the event of any such issuance of a notice of objection, promptly to take such steps including, without limitation, amending the Registration Statement or filing a new registration statement, at its own expense, as may be necessary to permit offers and sales of the Securities by the Underwriter (references herein to the Registration Statement shall include any such amendment or new registration statement);

(b) If required by Rule 430B(h) under the Act, to prepare a form of prospectus in a form approved by you and to file such form of prospectus pursuant to Rule 424(b) under the Act not later than may be required by Rule 424(b) under the Act; and to make no further amendment or supplement to such form of prospectus which shall be disapproved by you promptly after reasonable notice thereof;

(c) Promptly from time to time to take such action as you may reasonably request to qualify the Securities for offering and sale under the securities laws of such jurisdictions as you may request and to comply with such laws so as to permit the continuance of sales and dealings therein in such jurisdictions for as long as may be necessary to complete the distribution of the Securities, provided that in connection therewith the Company shall not be required to qualify as a foreign corporation or to file a general consent to service of process in any jurisdiction; provided further that the Securities may not be offered in any jurisdiction other than Canada or the United States in a manner that would require the Company to comply with any registration, prospectus, continuous disclosure, filing or other similar requirements under the applicable securities laws of such other jurisdiction;

(d) On the second New York Business Day succeeding the date of this Agreement and thereafter from time to time, to furnish the Underwriter with written and electronic copies of the Prospectus in New York City in such quantities as you may reasonably request, and, if the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required at any time prior to the expiration of nine months after the time of issue of the Prospectus in connection with the offering or sale of the Securities and if at such time any event shall have occurred as a result of which the Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made when such Prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is delivered, not misleading, or, if for any other reason it shall be necessary during such same period to amend or supplement the Prospectus or to file under the Exchange Act any document incorporated by reference in the Prospectus in order to comply with the Act or the Exchange Act, to notify you and upon your request to file such document and to prepare and furnish as soon as available without charge to the Underwriter and to any dealer in securities as many written and electronic copies as

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you may from time to time reasonably request of an amended Prospectus or a supplement to the Prospectus which will correct such statement or omission or effect such compliance; and in case the Underwriter is required to deliver a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) in connection with sales of any of the Securities at any time nine months or more after the time of issue of the Prospectus, upon your request but at the expense of the Underwriter, to prepare and deliver to the Underwriter as many written and electronic copies as you may request of an amended or supplemented Prospectus complying with Section 10(a)(3) of the Act;

(e) To make generally available to its securityholders as soon as practicable (which may be satisfied by filing with the Commission’s Electronic Data Gathering, Analysis and Retrieval System or any successor thereto), but in any event not later than 16 months after the effective date of the Registration Statement (as defined in Rule 158(c) under the Act), an earnings statement of the Company and its subsidiaries (which need not be audited) complying with Section 11(a) of the Act and the rules and regulations of the Commission thereunder (including, at the option of the Company, Rule 158);

(f) During the period beginning from the date hereof and continuing to and including 45 days after the Time of Delivery and such earlier time as you may notify the Company, not to (i) offer, sell, contract to sell, pledge, grant any option to purchase, lend or otherwise dispose of any Stock or any options or warrants to purchase any Stock, or any securities convertible into, exchangeable for or that represent the right to receive Stock (such options, warrants or other securities, collectively, “Derivative Instruments”), including without limitation any such shares or Derivative Instruments now owned or hereafter acquired by the Company, (ii) engage in any hedging or other transaction or arrangement (including, without limitation, any short sale or the purchase or sale of, or entry into, any put or call option, or combination thereof, forward, swap or any other derivative transaction or instrument, however described or defined) which is designed to or which reasonably could be expected to lead to or result in a sale, loan, pledge or other disposition (whether by the undersigned or someone other than the undersigned), or transfer of any of the economic consequences of ownership, in whole or in part, directly or indirectly, of any Stock or Derivative Instruments, whether any such transaction or arrangement (or instrument provided for thereunder) would be settled by delivery of Stock or other securities, in cash or otherwise or (iii) otherwise publicly announce any intention to engage in or cause any action or activity described in clause (i) above or transaction or arrangement described in clause (ii) above, without your prior written consent; and

(g) To pay the required Commission filing fees relating to the Securities within the time required by Rule 456(b)(1) under the Act without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) under the Act.

7.

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(ii) the Underwriter represents and agrees that, without the prior consent of the Company and the Underwriter, it has not made and will not make any offer relating to the Securities that would constitute a free writing prospectus required to be filed with the Commission; and

(iii) any such free writing prospectus the use of which has been consented to by the Company and the Underwriter is listed on Schedule I(a) hereto;

(b) The Company has complied and will comply with the requirements of Rule 433 under the Act applicable to any Issuer Free Writing Prospectus, including timely filing with the Commission or retention where required and legending; and

(c) The Company agrees that if at any time following issuance of an Issuer Free Writing Prospectus any event occurred or occurs as a result of which such Issuer Free Writing Prospectus would conflict with the information in the Registration Statement, the Pricing Prospectus or the Prospectus or would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances then prevailing, not misleading, the Company will give prompt notice thereof to the Underwriter and, if requested by the Underwriter, will prepare and furnish without charge to the Underwriter an Issuer Free Writing Prospectus or other document which will correct such conflict, statement or omission.

8. (a) The Company covenants and agrees with the Underwriter and the Selling Stockholder that the Company will pay or cause to be paid the following: (i) Commission, stock exchange, Financial Industry Regulatory Authority, Inc. and other registration and filing fees; (ii) all fees and expenses incurred in connection with complying with any securities or blue sky laws (including, without limitation, fees, charges and disbursements of counsel in connection with blue sky qualifications of the Securities); (iii) all printing, messenger and delivery expenses; (iv) the fees, charges and disbursements of counsel to the Company and of its independent public accountants, reserve engineers, and any other accounting and legal fees, charges and expenses incurred by the Company (including, without limitation, any expenses arising from any special audits or “comfort” letters required in connection with or incident to any registration); (v) the fees and expenses incurred in connection with the listing of the Securities on the NYSE or the quotation of Securities on any inter-dealer quotation system; (vi) the reasonable documented fees and expenses incurred in connection with the road show, if any, for the Offering; (vii) the cost and charges of any transfer agent or registrar; (viii) reasonable documented fees and expenses of one counsel to the Selling Stockholder; and (ix) all other costs and expenses incident to the performance of its obligations hereunder which are not otherwise specifically provided for in this Section.

(b) The Selling Stockholder covenants and agrees with the Underwriter and the Company that the Selling Stockholder will pay or cause to be paid the underwriting fees, discounts and commissions, placement fees of the Underwriter, broker commissions and any transfer taxes, in each case, applicable to the Securities and expenses of counsel engaged by the Selling Stockholder (other than expenses for counsel that are the Company’s expense pursuant to Section 8(a)).

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(c) It is understood, however, that, except as provided in this Section, and Sections 10 and 12 hereof, the Underwriter will pay all of its own costs and expenses, including the fees of its counsel, transfer taxes on resale of any of the Securities by them, and any advertising expenses connected with any offers it may make.

9. The obligations of the Underwriter hereunder shall be subject, in their discretion, to the condition that all representations and warranties and other statements of the Company and the Selling Stockholder herein are, at and as of the Applicable Time and the Time of Delivery, true and correct, the condition that the Company and the Selling Stockholder shall have performed all of its obligations hereunder theretofore to be performed, and the following additional conditions:

(a) The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act within the applicable time period prescribed for such filing by the rules and regulations under the Act and in accordance with Section 6(a) hereof; all other material required to be filed by the Company pursuant to Rule 433(d) under the Act, shall have been filed with the Commission within the applicable time periods prescribed for such filings by Rule 433; no stop order suspending the effectiveness of the Registration Statement or any part thereof shall have been issued and no proceeding for that purpose shall have been initiated or, to the knowledge of the Company, threatened by the Commission and no notice of objection of the Commission to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Act shall have been received; no stop order suspending or preventing the use of the Preliminary Prospectus, the Prospectus or any Issuer Free Writing Prospectus shall have been initiated or, to the knowledge of the Company, threatened by the Commission; and all requests for additional information on the part of the Commission shall have been complied with to your reasonable satisfaction;

(b) Cravath, Swaine & Moore LLP, counsel for the Underwriter, shall have furnished to you their written opinion and negative assurance letter, dated the Time of Delivery, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters;

(c) Gibson, Dunn & Crutcher LLP, counsel for the Company, shall have furnished to you their written opinion and negative assurance letter, dated the Time of Delivery, in form and substance satisfactory to you, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters;

(d) Each of Covington & Burling LLP and Potter Anderson & Corroon LLP, counsel for the Selling Stockholder, shall have furnished to you their written opinions, dated the Time of Delivery, in form and substance satisfactory to you, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters;

(e) Each of McDaniel & Associates Consultants Ltd. and Netherland, Sewell & Associates, Inc., reserve engineers for the Company, shall have furnished to you their written comfort letter, at each of (1) the date hereof and (2) the Time of Delivery, in form and substance satisfactory to you, stating the conclusions and findings of such firm with respect to certain of the oil and natural gas reserves of the Company and certain other related information contained in the Pricing Disclosure Package and the Prospectus, as applicable;

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(f) Each of (i) Moss Adams LLP, as auditor of Black Swan Permian, LLC and Black Swan Operating, LLC, (ii) PwC USA, as auditor of PetroLegacy Energy II, LLC and PearlSnap Midstream, LLC and (iii) Weaver and Tidwell, LLP, as auditor of Piedra Energy III, LLC and Piedra Energy IV, LLC, shall have furnished to you their written comfort letter, at each of the date hereof and the Time of Delivery, in form and substance satisfactory to you;

(g) Each of (i) LaRoche Petroleum Consultants, Ltd., reserve engineers for Black Swan Permian, LLC and Black Swan Operating, LLC, (ii) Cawley, Gillespie & Associates, Inc., reserve engineers for PetroLegacy Energy II, LLC and PearlSnap Midstream, LLC and (iii) Russell K. Hall and Associates, Inc., reserve engineers for the Piedra Energy III, LLC and Piedra Energy IV, LLC, shall have furnished to you their written comfort letter, at each of (1) the date hereof and (2) the Time of Delivery, in form and substance satisfactory to you, stating the conclusions and findings of such firm with respect to certain of the oil and natural gas reserves and certain other related information contained in the Pricing Disclosure Package and the Prospectus, as applicable;

(h) (i) On the date of the Prospectus at a time contemporaneously with or prior to the execution of this Agreement, (ii) on the effective date of any post-effective amendment to the Registration Statement filed subsequent to the date of this Agreement and (iii) also at the Time of Delivery, PwC Canada shall have furnished to you a comfort letter or comfort letters, dated the respective dates of delivery thereof, in form and substance satisfactory to you;

(i) (i) Neither the Company nor any of its subsidiaries shall have sustained since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus any material loss or interference with its business from fire, explosion, flood or other calamity or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Pricing Prospectus, and (ii) since the respective dates as of which information is given in the Pricing Prospectus, there shall not have been any change in the capital stock (other than as a result of the exercise, if any, of stock options or the settlement of other equity-based awards described as outstanding in, and the award, if any, of stock options, restricted stock or other equity-based awards in the ordinary course of business pursuant to the Company’s employee benefit plans that are described in the Pricing Prospectus and the Prospectus) or long term debt of the Company or any of its subsidiaries or any change or effect, or any development involving a prospective change or effect, in or affecting (x) the business, properties, financial position, stockholders’ equity or results of operations of the Company and its subsidiaries, taken as a whole, except as set forth or contemplated in the Pricing Prospectus, or (y) the ability of the Company to perform its obligations under this Agreement, including the issuance and sale of the Securities, or to consummate the transactions contemplated in the Pricing Prospectus and the Prospectus, the effect of which, in any such case described in clause (i) or (ii), is in your judgment so material and adverse as to make it impracticable or inadvisable to proceed with the public offering or the delivery of the Securities on the terms and in the manner contemplated in the Pricing Prospectus and the Prospectus;

(j) On or after the Applicable Time (i) no downgrading shall have occurred in the rating of any of the Company’s debt securities by any “nationally recognized statistical rating organization”, as that term is defined in Section 3(a)(62) of the Act, and (ii) no such organization shall have publicly announced that it has under surveillance or review, with possible negative implications, its rating of any of the Company’s debt securities;

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(k) On or after the Applicable Time there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally on the NYSE; (ii) a suspension or material limitation in trading in the Company’s securities on the NYSE; (iii) a general moratorium on commercial banking activities declared by either Federal or New York State authorities or a material disruption in commercial banking or securities settlement or clearance services in the United States; (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war or (v) the occurrence of any other calamity or crisis or any change in financial, political or economic conditions in the United States or elsewhere, if the effect of any such event specified in clause (iv) or (v) in your judgment makes it impracticable or inadvisable to proceed with the public offering, sale or the delivery of the Securities on the terms and in the manner contemplated in the Pricing Prospectus and the Prospectus;

(l) The Company shall have complied with the provisions of Section 6(d) hereof with respect to the furnishing of prospectuses on the second New York Business Day succeeding the date of this Agreement;

(m) The Securities shall have been duly listed, subject to notice of issuance, on the Exchange for quotation on NYSE;

(n) The Company shall have furnished or caused to be furnished to you at the Time of Delivery certificates of officers of the Company satisfactory to you as to the accuracy of the representations and warranties of the Company herein at and as of such time, as to the performance by the Company of all of its obligations hereunder to be performed at or prior to such time, as to the matters set forth in subsections (a) and (j) of this Section and as to such other matters as you may reasonably request;

(o) The “lock-up” agreements, each substantially in the form of Exhibit B hereto, between you and the Selling Stockholder and certain executive officers and directors of the Company listed in Exhibit A hereto relating to sales and certain other dispositions of shares of Stock or certain other securities, delivered to you on or before the date hereof, shall be in full force and effect on the Time of Delivery;

(p) The Selling Stockholder shall have furnished to you a certificate, dated the Time of Delivery, in form and substance satisfactory to you, of an Administrative Trustee of the Selling Stockholder in which such Administrative Trustee shall state that: (i) the representations and warranties of the Selling Stockholder in this Agreement are true and correct as of the Time of Delivery and (ii) the Selling Stockholder has complied with all agreements and satisfied all conditions on its part to be performed or satisfied hereunder at or prior to the Time of Delivery;

(q) On or prior to the Applicable Time, the Selling Stockholder shall have furnished to you a certificate satisfying the beneficial ownership due diligence requirements of the Financial Crimes Enforcement Network in form and substance satisfactory to you, along with such additional supporting documentation as the Underwriter has requested in connection with the verification of the foregoing certificate; and

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(r) On or prior to the Applicable Time, the Selling Stockholder shall have furnished to you a properly completed and executed United States Treasury Department Form W-9 (or other applicable form or statement specified by the Treasury Department regulations in lieu thereof).

10. (a) The Company will indemnify and hold harmless the Underwriter and any of its affiliates and the Selling Stockholder against any losses, claims, damages or liabilities, joint or several, to which the Underwriter or its affiliate or the Selling Stockholder may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, any Issuer Free Writing Prospectus, any “roadshow” as defined in Rule 433(h) under the Act (a “roadshow”) or any “issuer information” filed or required to be filed pursuant to Rule 433(d) under the Act, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, and will reimburse the Underwriter or any of its affiliates or the Selling Stockholder for any legal or other expenses reasonably incurred by the Underwriter or its affiliate or the Selling Stockholder in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that the Company shall not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, in reliance upon and in conformity with the Underwriter Information or the Selling Stockholder Information.

(b) The Selling Stockholder will indemnify and hold harmless the Underwriter, the Company and their respective affiliates against any losses, claims, damages or liabilities to which to which the Company may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, or any roadshow, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus or any such amendment or supplement thereto, or any Issuer Free Writing Prospectus, or any roadshow, in reliance upon and in conformity with the Selling Stockholder Information; and will reimburse the Company for any legal or other expenses reasonably incurred by the Company in connection with investigating or defending any such action or claim as such expenses are incurred.

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(c) The Underwriter will indemnify and hold harmless the Company and any of their respective directors and officers and the Selling Stockholder against any losses, claims, damages or liabilities to which the Company or Selling Stockholder may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, or any roadshow, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus or any such amendment or supplement thereto, or any Issuer Free Writing Prospectus, or any roadshow, in reliance upon and in conformity with the Underwriter Information; and will reimburse the Company and the Selling Stockholder for any legal or other expenses reasonably incurred by the Company or the Selling Stockholder in connection with investigating or defending any such action or claim as such expenses are incurred. As used in this Agreement with respect to the Underwriter and an applicable document, “Underwriter Information” shall mean the written information furnished to the Company by the Underwriter expressly for use therein; it being understood and agreed upon that the only such information furnished by the Underwriter consists of the following information in the Prospectus furnished on behalf of the Underwriter: the information contained in the sixth and seventh paragraphs under the caption “Underwriting.”

(d) Promptly after receipt by an indemnified party under subsection (a), (b) or (c) above of notice of any claim or the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against the indemnifying party under such subsection, notify the indemnifying party in writing of the claim or the commencement thereof; provided that the failure to notify the indemnifying party shall not relieve it from any liability that it may have under the preceding paragraphs of this Section 10 except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided further that the failure to notify the indemnifying party shall not relieve it from any liability that it may have to an indemnified party otherwise than under the preceding paragraphs of this Section 10. In case any such claim or action shall be brought against any indemnified party and it shall notify the indemnifying party of the commencement thereof, the indemnifying party shall be entitled to participate therein and, to the extent that it shall wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such indemnified party (who shall not, except with the consent of the indemnified party, be counsel to the indemnifying party), and, after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, the indemnifying party shall not be liable to such indemnified party under such subsection for any legal expenses of other counsel or any other expenses, in each case subsequently incurred by such indemnified party, in connection with the defense thereof other than reasonable costs of investigation; provided, however, that the indemnified party shall have the right to employ counsel to represent jointly the indemnified party and those other indemnified parties and their respective affiliates who may be subject to liability arising out of any claim in respect of which indemnity may be sought under this Section 10 if (i)

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the indemnified party and the indemnifying party shall have so mutually agreed; (ii) the indemnifying party has failed within a reasonable time to retain counsel reasonably satisfactory to the indemnified party; (iii) the indemnified party and its affiliates shall have reasonably concluded that there may be legal defenses available to them that are different from or in addition to those available to the indemnifying party; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the indemnified parties or their respective affiliates, on the one hand, and the indemnifying party, on the other hand, and representation of both sets of parties by the same counsel would be inappropriate due to actual or potential differing interests between them, and in any such event the fees and expenses of such separate counsel shall be paid by the indemnifying party. No indemnifying party shall, without the prior written consent of the indemnified party (which consent shall not be unreasonably held), effect the settlement or compromise of, or consent to the entry of any judgment with respect to, any pending or threatened action or claim in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified party is an actual or potential party to such action or claim) unless such settlement, compromise or judgment (i) includes an unconditional release of such indemnified party from all liability arising out of such action or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act, by or on behalf of any indemnified party.

(e) If the indemnification provided for in this Section 10 is for any reason unavailable to or insufficient to hold harmless an indemnified party under subsection (a), (b) or (c) above in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Selling Stockholder on the one hand and the Underwriter on the other from the offering of the Securities. If, however, the allocation provided by the immediately preceding sentence is not permitted by applicable law, then each indemnifying party shall contribute to such amount paid or payable by such indemnified party in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company and the Selling Stockholder on the one hand and the Underwriter on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations. The relative benefits received by the Company and the Selling Stockholder on the one hand and the Underwriter on the other shall be deemed to be in the same proportion as the total net proceeds from the offering of the Securities purchased under this Agreement (before deducting expenses) received by the Company and the Selling Stockholder bear to the total underwriting discounts and commissions received by the Underwriter. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company and the Selling Stockholder on the one hand or the Underwriter on the other and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company, the Selling Stockholder and the Underwriter agree that it would not be just and equitable if contribution pursuant to this subsection (e) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this subsection (e). The amount paid or payable by an indemnified party as a result of the losses,

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claims, damages or liabilities (or actions in respect thereof) referred to above in this subsection (e) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this subsection (e), the Underwriter shall not be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which the Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

(f) The obligations of the Company and the Selling Stockholder under this Section 10 shall be in addition to any liability which the Company and the Selling Stockholder may otherwise have and shall extend, upon the same terms and conditions, to each employee, officer and director of the Underwriter, each person, if any, who controls the Underwriter within the meaning of the Act and each broker-dealer or other affiliate of the Underwriter; and the obligations of the Underwriter under this Section 10 shall be in addition to any liability which the Underwriter may otherwise have and shall extend, upon the same terms and conditions, to each officer and director of the Company and the Selling Stockholder and to each person, if any, who controls the Company and the Selling Stockholder within the meaning of the Act.

11. The respective indemnities, rights of contribution, agreements, representations, warranties and other statements of the Company, the Selling Stockholder and the Underwriter, as set forth in this Agreement or made by or on behalf of them, respectively, pursuant to this Agreement, shall remain in full force and effect, regardless of any investigation (or any statement as to the results thereof) made by or on behalf of the Underwriter or any director, officer, employee, affiliate or controlling person of the Underwriter, the Company or any officer or director or controlling person of the Company or the Selling Stockholder or any officer or director or controlling person of the Selling Stockholder and shall survive delivery of and payment for the Securities.

12. If this Agreement shall be terminated pursuant to the occurrence of any event specified in Section 9(k)(i), (ii), (iii), (iv) or (v) hereof, the Company shall not then be under any liability to the Underwriter except as provided in Sections 8 and 10 hereof; but, if, for any reason, any Securities are not delivered by or on behalf of the Selling Stockholder as provided herein, the Company and the Selling Stockholder will reimburse the Underwriter for all out of pocket expenses approved in writing by you, including fees and disbursements of counsel, reasonably incurred by the Underwriter in making preparations for the purchase, sale and delivery of the Securities, but the Company shall then be under no further liability to the Underwriter except as provided in Sections 8 and 10 hereof.

13. The Underwriter represents and warrants that it is not located in or resident in any “local jurisdiction” (within the meaning of NI 62-104).

14. The Selling Stockholder and the Company intend the Share Repurchase to be treated as, and shall treat the Share Repurchase as, a distribution in payment in exchange for the Repurchase Shares within the meaning of Section 302(a) of the U.S. Internal Revenue Code of 1986 with respect to which no withholding of tax is required. The Selling Stockholder shall provide a properly executed IRS Form W-9 to the Company prior to the Applicable Time. The Underwriter shall use best efforts to provide a properly executed IRS Form W-9 to the Company prior to the Time of Delivery.

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15. All statements, requests, notices and agreements hereunder shall be in writing, and if to the Underwriter shall be delivered or sent by mail or electronic transmission to J.P. Morgan Securities LLC, 383 Madison Avenue, New York, NY 10179, Attention: Equity Syndicate Desk, Fax: (212) 622-8358; if to the Company shall be delivered or sent by mail or electronically transmitted and confirmed to the address of the Company set forth in the Registration Statement, Attention: Mike Liedtke, Treasurer; and if to the Selling Stockholder shall be delivered or sent by mail or electronic transmission to Ronald A. Hewitt, Covington & Burling LLP, The New York Times Building, 620 Eighth Avenue, New York, NY 10018, or rhewitt@cov.com, and Matthew C. Franker, Covington & Burling LLP, OneCity Center, 850 Tenth Street, NW, Washington, DC 20001, or mfranker@cov.com. Any such statements, requests, notices or agreements shall take effect upon receipt thereof.

In accordance with the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)), the Underwriter is required to obtain, verify and record information that identifies their respective clients, including the Company and the Selling Stockholder, which information may include the name and address of their respective clients, as well as other information that will allow the Underwriter to properly identify their respective clients.

16. This Agreement shall be binding upon, and inure solely to the benefit of, the Underwriter, the Company, the Selling Stockholder, and, to the extent provided in Sections 10 and 11 hereof, any officer or director or any controlling person of the Company, the Selling Stockholder or the Underwriter, or any director, officer, employee, affiliate or controlling person of the Underwriter, and their respective heirs, executors, administrators, successors and assigns, and no other person shall acquire or have any right under or by virtue of this Agreement. No purchaser of any of the Securities from the Underwriter shall be deemed a successor or assign by reason merely of such purchase.

17. Time shall be of the essence of this Agreement. As used herein, the term “business day” shall mean any day when the Commission’s office in Washington, D.C. is open for business.

18. Each of the Company and the Selling Stockholder acknowledges and agrees that (i) the purchase and sale of the Securities pursuant to this Agreement is an arm’s-length commercial transaction between the Company and the Selling Stockholder, on the one hand, and the Underwriter, on the other, (ii) in connection therewith and with the process leading to such transaction the Underwriter is acting solely as a principal and not the agent or fiduciary of the Company or the Selling Stockholder, (iii) the Underwriter has not assumed an advisory or fiduciary responsibility in favor of the Company or the Selling Stockholder with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether the Underwriter has advised or is currently advising the Company or the Selling Stockholder on other matters) or any other obligation to the Company or the Selling Stockholder except the obligations expressly set forth in this Agreement, (iv) the Company and the Selling Stockholder, as to itself, has consulted its own legal and financial advisors to the extent it deemed appropriate. Each of the Company and

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the Selling Stockholder agrees that it will not claim that the Underwriter has rendered advisory services of any nature or respect, or owes a fiduciary or similar duty to the Company or the Selling Stockholder, in connection with such transaction or the process leading thereto. Any review by the Underwriter of the Company, the Selling Stockholder, the transactions contemplated hereby or other matters relating to such transactions will be performed solely for the benefit of the Underwriter, as the case may be, and shall not be on behalf of the Company or the Selling Stockholder, as the case may be, or any other person. Moreover, the Selling Stockholder acknowledges and agrees that, although the Underwriter may be required or choose to provide the Selling Stockholder with certain Regulation Best Interest and Form CRS disclosure in connection with the offering, the Underwriter is not making a recommendation to the Selling Stockholder to participate in the offering, enter into a “lock-up” agreement substantially in the form of Exhibit B hereto or sell any Securities at the price determined in the offering, and nothing set forth in such disclosures is intended to suggest that the Underwriter is making such a recommendation.

19. This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company, the Selling Stockholder and the Underwriter with respect to the subject matter hereof.

20. This Agreement and any transaction contemplated by this Agreement shall be governed by and construed in accordance with the laws of the State of New York without regard to principles of conflict of laws that would results in the application of any other law than the laws of the State of New York. The Company and the Selling Stockholder agree that any suit or proceeding arising in respect of this Agreement or any transaction contemplated by this Agreement will be tried exclusively in the U.S. District Court for the Southern District of New York or, if that court does not have subject matter jurisdiction, in any state court located in The City and County of New York and the Company and the Selling Stockholder agree to submit to the jurisdiction of, and to venue in, such courts.

21. The Company, the Selling Stockholder and the Underwriter hereby irrevocably waive, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

22. This Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such respective counterparts shall together constitute one and the same instrument. Counterparts may be delivered via facsimile, electronic mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transaction Act, the Electronic Signatures and Records Act or other applicable law, e.g., www.docusign.com) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

23. Notwithstanding anything herein to the contrary, the Company is authorized to disclose to any persons the U.S. federal and state income tax treatment and tax structure of the potential transaction and all materials of any kind (including tax opinions and other tax analyses) provided to the Company relating to that treatment and structure, without the Underwriter, imposing any limitation of any kind. However, any information relating to the tax treatment and tax structure shall remain confidential (and the foregoing sentence shall not apply) to the extent necessary to enable any person to comply with securities laws. For this purpose, “tax structure” is limited to any facts that may be relevant to that treatment.

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24. Recognition of the U.S. Special Resolution Regimes.

(a) In the event that the Underwriter that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer from the Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States.

(b) In the event that the Underwriter that is a Covered Entity or a BHC Act Affiliate of the Underwriter becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against the Underwriter are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States.

(c) As used in this section:

“BHC Act Affiliate” has the meaning assigned to the term “affiliate” in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k).

“Covered Entity” means any of the following:

(i) a “covered entity” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b);

(ii) a “covered bank” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or

(iii) a “covered FSI” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b).

“Default Right” has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable.

“U.S. Special Resolution Regime” means each of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

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If the foregoing is in accordance with your understanding, please sign and return to us counterparts hereof, and upon the acceptance hereof by you, on behalf of the Underwriter, this letter and such acceptance hereof shall constitute a binding agreement between the Underwriter, the Selling Stockholder and the Company.

[Signature Page to Underwriting Agreement]

[Signature Page to Underwriting Agreement]

[Signature Page to Underwriting Agreement]

SCHEDULE I

Exhibit A

Exhibit A

Directors and Officers of the Company Subject to Lock-Up Agreements

Exhibit B

Ovintiv Inc.

Lock-Up Agreement

September 11, 2023

J.P. Morgan Securities LLC

c/o J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10719

Re: Ovintiv Inc.- Lock-Up Agreement

Ladies and Gentlemen:

The undersigned understands that you, as the underwriter (the “Underwriter”), propose to enter into an Underwriting Agreement (the “Underwriting Agreement”) with Ovintiv Inc., a Delaware corporation (the “Company”), providing for a public offering (the “Offering”) of shares (the “Shares”) of common stock, $0.01 par value per share, of the Company (the “Common Stock”) pursuant to a Registration Statement on Form S-3 to be filed with the Securities and Exchange Commission.

In consideration of the agreement by the Underwriter to offer and sell the Shares, and of other good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, the undersigned agrees that, during the period beginning from the date of this Lock-Up Agreement and continuing to and including the date 45 days after the date set forth on the final prospectus used to sell the Shares (the “Lock-Up Period”), the undersigned shall not, and shall not cause or direct any of its affiliates to, (i) offer, sell, contract to sell, pledge, grant any option to purchase, lend or otherwise dispose of any shares of Common Stock of the Company, or any options or warrants to purchase any shares of Common Stock of the Company, or any securities convertible into, exchangeable for or that represent the right to receive shares of Common Stock of the Company (such options, warrants or other securities, collectively, “Derivative Instruments”), including without limitation any such shares or Derivative Instruments now owned or hereafter acquired by the undersigned, (ii) engage in any hedging or other transaction or arrangement (including, without limitation, any short sale or the purchase or sale of, or entry into, any put or call option, or combination thereof, forward, swap or any other derivative transaction or instrument, however described or defined) which is designed to or which reasonably could be expected to lead to or result in a sale, loan, pledge or other disposition (whether by the undersigned or someone other than the undersigned), or transfer of any of the economic consequences of ownership, in whole or in part, directly or indirectly, of any shares of Common Stock of the Company or Derivative

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Exhibit B

Instruments, whether any such transaction or arrangement (or instrument provided for thereunder) would be settled by delivery of Common Stock or other securities, in cash or otherwise (any such sale, loan, pledge or other disposition, or transfer of economic consequences, a “Transfer”) or (iii) otherwise publicly announce any intention to engage in or cause any action or activity described in clause (i) above or transaction or arrangement described in clause (ii) above. The undersigned represents and warrants that the undersigned is not, and has not caused or directed any of its affiliates to be or become, currently a party to any agreement or arrangement that provides for, is designed to or which reasonably could be expected to lead to or result in any Transfer during the Lock-Up Period. For the avoidance of doubt, the undersigned agrees that the foregoing provisions shall be equally applicable to any issuer-directed or other Shares the undersigned may purchase in the Offering. [For the further avoidance of doubt, nothing contained herein shall prohibit the administrative trustee of the undersigned from acting in such capacity.]¹

If the undersigned is not a natural person, the undersigned represents and warrants that no single natural person, entity or “group” (within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), other than a natural person, entity or “group” (as described above) that has executed a Lock-Up Agreement in substantially the same form as this Lock-Up Agreement, beneficially owns, directly or indirectly, 50% or more of the common equity interests, or 50% or more of the voting power, in the undersigned.

Notwithstanding the foregoing, the undersigned may transfer the undersigned’s shares of Common Stock of the Company:

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Exhibit B

For purposes of this Lock-Up Agreement, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin. In addition, notwithstanding the foregoing, if the undersigned is a corporation, the corporation may transfer the capital stock of the Company to any wholly-owned subsidiary of such corporation; provided, however, that in any such case, it shall be a condition to the transfer that the transferee execute an agreement stating that the transferee is receiving and holding such capital stock subject to the provisions of this Agreement and there shall be no further transfer of such capital stock except in accordance with this Agreement, and provided further that any such transfer shall not involve a disposition for value. The undersigned now has, and, except as contemplated by clauses (i) through (vi) above, for the duration of this Lock-Up Agreement will have, good and marketable title to the undersigned’s shares of Common Stock of the Company, free and clear of all liens, encumbrances, and claims whatsoever. The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the undersigned’s shares of Common Stock of the Company except in compliance with the foregoing restrictions.

The undersigned acknowledges and agrees that the Underwriter has not made any recommendation or provided any investment or other advice to the undersigned with respect to this Lock-Up Agreement or the subject matter hereof, and the undersigned has consulted its own legal, accounting, financial, regulatory, tax and other advisors with respect to this Lock-Up Agreement and the subject matter hereof to the extent the undersigned has deemed appropriate.

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Exhibit B

The undersigned further acknowledges and agrees that, although the Underwriter may have provided or hereafter provide to the undersigned in connection with the Offering a Form CRS and/or certain other disclosures as contemplated by Regulation Best Interest, the Underwriter has not made and is not making a recommendation to the undersigned to enter into this Lock-Up Agreement or to transfer, sell or dispose of, or to refrain from transferring, selling or disposing of, any Shares, and nothing set forth in such disclosures or herein is intended to suggest that the Underwriter is making such a recommendation.

Notwithstanding anything to the contrary contained herein, this Lock-Up Agreement will automatically terminate and the undersigned will be released from all of his, her or its obligations hereunder upon the earliest to occur, if any, of the following: (i) prior to the execution of the Underwriting Agreement, the Company advises the Underwriter in writing that it has determined not to proceed with the Offering or (ii) the Underwriting Agreement is executed but is terminated (other than with respect to the provisions thereof which survive termination) prior to payment for and delivery of the Shares to be sold thereunder.

This Lock-Up Agreement shall be governed by and construed in accordance with the laws of the State of New York without regard to principles of conflict of laws that would results in the application of any other law than the laws of the State of New York. The undersigned and the Underwriter agree that any suit or proceeding arising in respect of this Lock-Up Agreement will be tried exclusively in the U.S. District Court for the Southern District of New York or, if that court does not have subject matter jurisdiction, in any state court located in The City and County of New York and the undersigned and the Underwriter agree to submit to the jurisdiction of, and to venue in, such courts.

The undersigned understands that the Company and the Underwriter are relying upon this Lock-Up Agreement in proceeding toward consummation of the Offering. The undersigned further understands that this Lock-Up Agreement is irrevocable and shall be binding upon the undersigned’s heirs, legal representatives, successors, and assigns.

[Signature page follows]

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Exhibit B

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