Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF CIMAREX ENERGY CO.

1.             The name of the Corporation is Cimarex Energy Co.

2.             The name under which the Corporation was originally incorporated was Helmerich & Payne Exploration and Production Co. and the original Certificate of Incorporation of the Corporation was filed with the Secretary of State of the State of Delaware on February 14, 2002.

3.             An Amended and Restated Certificate of Incorporation was filed with the Secretary of State of the State of Delaware on September 30, 2002.

4.             An additional Amended and Restated Certificate of Incorporation was filed with the Secretary of State of the State of Delaware on June 7, 2005.

5.             This Amended and Restated Certificate of Incorporation was duly adopted in accordance with the provisions of Sections 242 and 245 of the General Corporation Law of the State of Delaware.

6.             The text of the Restated Certificate of Incorporation of the Corporation as amended hereby is restated to read in its entirety, as follows:

FIRST:  The name of the Corporation is Cimarex Energy Co. (hereinafter the “Corporation”).

SECOND:  The address of the registered agent is 261 Little Falls Drive, in the City of Wilmington, County of New Castle, State of Delaware.  The name of its registered agent at that address is the Corporation Services Company.

THIRD:  The purpose of the Corporation is to engage in any lawful act or activity for which a corporation may be organized under the General Corporation Law of the State of Delaware as set forth in Title 8 of the Delaware Code (the “GCL”).

FOURTH:  The total number of shares of stock which the Corporation shall have authority to issue is Two Hundred Fifteen Million (215,000,000) shares of capital stock, consisting of (i) Two Hundred Million (200,000,000) shares of common stock, par value $.01 per share (the “Common Stock”), and (ii) Fifteen Million (15,000,000) shares of preferred stock, par value $.01 per share (the “Preferred Stock”).

1.             Common Stock.  The powers, preferences and rights, and the qualifications, limitations and restrictions, of the Common Stock are as follows:

a.             Voting.  Except as otherwise expressly required by law or provided in this Certificate of Incorporation, and subject to any voting rights provided to holders of Preferred Stock at any time outstanding, at each annual or special meeting of stockholders, each holder of record of shares of Common Stock on the relevant record date shall be entitled to cast one vote in person or by proxy for each share of the Common Stock standing in such holder’s name on the stock transfer records of the Corporation.  Holders of shares of Common Stock shall not have cumulative voting rights.

b.             Dividends.  Subject to the rights of the holders of Preferred Stock, and subject to any other provisions of this Certificate of Incorporation, as it may be amended from time to time, holders of shares of Common Stock shall be entitled to receive such dividends and other distributions in cash, stock or property of the Corporation when, as and if declared thereon by the Board of Directors from time to time out of assets or funds of the Corporation legally available therefor.

c.             Liquidation, Dissolution, etc.  In the event of any liquidation, dissolution or winding up (either voluntary or involuntary) of the Corporation, the holders of shares of Common Stock shall be entitled to receive the assets and funds of the Corporation available for distribution after payments to creditors and to the holders of any Preferred Stock of the Corporation that may at the time be outstanding, in proportion to the number of shares held by them.

d.             No Preemptive or Subscription Rights.  No holder of shares of Common Stock shall be entitled to preemptive or subscription rights.

2.             Preferred Stock.  The Board of Directors is hereby expressly authorized to provide for the issuance of all or any shares of the Preferred Stock in one or more classes or series, and to fix for each such class or series such voting powers, full or limited, or no voting powers, and such designations, preferences and relative, participating, optional or other special rights and such qualifications, limitations or restrictions thereof, as shall be stated and expressed in the resolution or resolutions adopted by the Board of Directors providing for the issuance of such class or series, including, without limitation, the authority to provide that any such class or series may be (i) subject to redemption at such time or times and at such price or prices; (ii) entitled to receive dividends (which may be cumulative or non-cumulative) at such rates, on such conditions, and at such times, and payable in preference to, or in such relation to, the dividends payable on any other class or classes or any other series; (iii) entitled to such rights upon the dissolution of, or upon any distribution of the assets of, the Corporation; or (iv) convertible into, or exchangeable for, shares of any other class or classes of stock, or of any other series of the same or any other class or classes of stock, of the Corporation at such price or prices or at such rates of exchange and with such adjustments, all as may be stated in such resolution or resolutions. Pursuant to the authority conferred by this Article FOURTH, the following series of Preferred Stock have been designated, each such series consisting of such number of shares, with such voting powers and with such designations, preferences and relative, participating, optional or other special rights, and qualifications, limitations or restrictions thereon as are stated and expressed in Exhibit A attached hereto and incorporated herein by reference:

Exhibit A: 8 1/8% Series A Cumulative Perpetual Convertible Preferred Stock

3.             Power to Sell and Purchase Shares.  Subject to the requirements of applicable law, the Corporation shall have the power to issue and sell all or any part of any shares of any class of stock herein or hereafter authorized to such persons, and for such consideration, as the Board of Directors shall from time to time, in its discretion, determine, whether or not greater consideration could be received upon the issue or sale of the same number of shares of another class, and as otherwise permitted by law.  Subject to the requirements of applicable law, the Corporation shall have the power to purchase any shares of any class of stock herein or hereafter authorized from such persons, and for such consideration, as the Board of Directors shall from time to time, in its discretion, determine whether or not less consideration could be paid upon the purchase of the same number of shares of another class, and as otherwise permitted by law.

FIFTH:  The following provisions are inserted for the management of the business and the conduct of the affairs of the Corporation, and for further definition, limitation and regulation of the powers of the Corporation and of its directors and stockholders.

1.             The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors.

2.             The directors shall have concurrent power with the stockholders to make, alter, amend, change, add to or repeal the By-Laws of the Corporation.

3.             a.             Subject to the rights of the holders of any series of Preferred Stock to elect additional directors, the number of directors of the Corporation shall be at least six and not more than ten, with the exact number to be from time to time fixed by resolution adopted by a majority of the entire Board of Directors.  Election of directors need not be by written ballot unless the By-Laws so provide.  At each annual meeting of stockholders commencing with the 2022 annual meeting of stockholders, the directors whose terms shall then expire, other than those who may be elected by the holders of any series of Preferred Stock, shall be elected for a one-year term expiring at the next succeeding annual meeting of stockholders.  Notwithstanding any other provision of this Certificate of Incorporation (and in addition to any other vote that may be required by Law), the affirmative vote of the holders of at least eighty percent (80%) of the voting power of the shares entitled to vote at an election of directors shall be required to amend, alter, change or repeal, or to adopt any provision as part of this Certificate of Incorporation inconsistent with the purpose and intent of this Article FIFTH.

b.             A director shall hold office until the annual meeting for the year in which his or her term expires and until his or her successor shall be elected and shall qualify subject, however, to prior death, resignation, retirement, disqualification or removal from office.

c.             Subject to the terms of any one or more classes or series of Preferred Stock, any vacancy on the Board of Directors that results from an increase in the number of directors may be filled by a majority of the Board of Directors then in office, provided that a quorum is present, and any other vacancy occurring on the Board of Directors may be filled by a majority of the Board of Directors then in office, even if less than a quorum, or by a sole remaining director.  Subject to the rights, if any, of the holders of shares of Preferred Stock then outstanding, any or all of the directors of the Corporation may be removed from office at any time, with or without cause, only by the affirmative vote of the holders of at least a majority of the voting power of the Corporation’s then outstanding capital stock entitled to vote at an election of directors; provided, however, that the Board of Directors shall be considered classified for purposes of Section 141(k) of the GCL so long as any director is continuing to serve the remaining portion of a multi-year term and no such director may be removed during such multi-year term except for cause and then only by the affirmative vote of the holders of at least a majority of the voting power of the Corporation’s then outstanding capital stock entitled to vote at an election of directors.  Notwithstanding the foregoing, whenever the holders of any one or more classes or series of Preferred Stock issued by the Corporation shall have the right, voting separately by class or series, to elect directors at an annual or special meeting of stockholders, the election, term of office, filling of vacancies and other features of such directorships shall be governed by the terms of this Certificate of Incorporation applicable thereto.

d.             In addition to the powers and authority hereinbefore or by statute expressly conferred upon them, the directors are hereby empowered to exercise all such powers and do all such acts and things as may be exercised or done by the Corporation, subject, nevertheless, to the provisions of the GCL, this Certificate of Incorporation, and any By-Laws adopted by the stockholders; provided, however, that no By-Laws hereafter adopted by the stockholders shall invalidate any prior act of the directors which would have been valid if such By-Laws had not been adopted.

4.             No director shall be personally liable to the Corporation or any of its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under the GCL, as the same exists or may hereafter be amended.  If the GCL is amended hereafter to authorize further elimination or limitation of liability of directors, then the liability of a director of the Corporation shall be eliminated or limited to the fullest extent authorized by the GCL, as so amended.  Any repeal or modification of this Article FIFTH by the stockholders of the Corporation shall not adversely affect any rights or protection of a director of the Corporation existing at the time of such repeal or modification with respect to acts or omissions occurring prior to such repeal or modification.

5.             In addition to the powers and authority hereinbefore or by statute expressly conferred upon them, the directors are hereby empowered to exercise all such powers and do all such acts and things as may be exercised or done by the Corporation, subject, nevertheless, to the provisions of the GCL, this Certificate of Incorporation, and any By-Laws adopted by the stockholders; provided, however, that no By-Laws hereafter adopted by the stockholders shall invalidate any prior act of the directors which would have been valid if such By-Laws had not been adopted.

SIXTH:  Meetings of stockholders may be held within or without the State of Delaware, as the By-Laws may provide.  The books of the Corporation may be kept (subject to any provision contained in the GCL) outside the State of Delaware at such place or places as may be designated from time to time by the Board of Directors or in the By-Laws of the Corporation.

SEVENTH:  The Corporation shall indemnify its directors and officers to the fullest extent authorized or permitted by law, as now or hereafter in effect, and such right to indemnification shall continue as to a person who has ceased to be a director or officer of the Corporation and shall inure to the benefit of his or her heirs, executors and personal and legal representatives; provided, however, that, except for proceedings to enforce rights to indemnification, the Corporation shall not be obligated to indemnify any director or officer (or his or her heirs, executors or personal or legal representatives) in connection with a proceeding (or part thereof) initiated by such person unless such proceeding (or part thereof) was authorized or consented to by the Board of Directors.  The right to indemnification conferred by this Article SEVENTH shall include the right to be paid by the Corporation the expenses incurred in defending or otherwise participating in any proceeding in advance of its final disposition.

The Corporation may, to the extent authorized from time to time by the Board of Directors, provide rights to indemnification and to the advancement of the expenses to employees and agents of the Corporation similar to those conferred in this Article SEVENTH to directors and officers of the Corporation.

The rights to indemnification and to the advance of expenses conferred in this Article SEVENTH shall not be exclusive of any other right which any person may have or hereafter acquire under this Certificate of Incorporation, the By-Laws of the Corporation, any statute, agreement, vote of stockholders or disinterested directors or otherwise.

Any repeal or modification of this Article SEVENTH by the stockholders of the Corporation shall not adversely affect any rights to indemnification and to the advancement of expenses of a director or officer of the Corporation existing at the time of such repeal or modification with respect to any acts or omissions occurring prior to such repeal or modification.

EIGHTH:  No action by shareholders shall be valid unless taken at a duly constituted meeting pursuant to the terms of the By-Laws of the Corporation and no action may be taken by stockholders by written consent without a meeting.  Notwithstanding any other provision of this Certificate of Incorporation (and in addition to any other vote that may be required by law), the affirmative vote of the holders of at least eighty percent (80%) of the voting power of the shares entitled to vote at an election of directors shall be required to amend, alter, change or repeal, or to adopt any provision as part of this Certificate of Incorporation inconsistent with the purpose and intent of this article EIGHTH.

NINTH:  The Corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation.  In furtherance and not in limitation of the powers conferred upon it by the laws of the State of Delaware, the Board of Directors shall have the power to adopt, amend, alter or repeal the Corporation’s By-Laws.  The affirmative vote of at least a majority of the entire Board of Directors shall be required to adopt, amend, alter or repeal the Corporation’s By-Laws.  The Corporation’s By-Laws also may be adopted, amended, altered or repealed by the affirmative vote of at least eighty percent (80%) of the voting power of the shares entitled to vote at an election of directors.  Notwithstanding any other provision of this Certificate of Incorporation (and in addition to any other vote that may be required by law), the affirmative vote of the holders of at least eighty percent (80%) of the voting power of the shares entitled to vote at an election of directors shall be required to amend, alter, change or repeal, or to adopt any provision as part of this Certificate of Incorporation inconsistent with the purpose and intent of this Article NINTH.

IN WITNESS WHEREOF, Cimarex Energy Co. has caused this Certificate to be duly executed in its corporate name as of this 12^th day of May 2021.