EX-4.1



 Exhibit 4.1 

The following Certificate of Incorporation is compiled from the official Certificate of Incorporation and subsequent Amendments. 

CERTIFICATE OF INCORPORATION 

OF 
 WILLBROS GROUP, INC.

 FIRST: The name of the Corporation is Willbros Group, Inc. (the “Corporation”). 

SECOND: The address of the Corporation’s registered office in the State of Delaware is 160 Greentree Drive, Suite 101, in the City of
Dover, County of Kent, Delaware 19904. The name of its registered agent at such address is National Registered Agents, Inc. 
 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 (the “GCL”). 

FOURTH: (a) The total number of shares of stock which the Corporation shall have authority to issue is 106,000,000 shares of capital
stock, consisting of (i) 105,000,000 shares of common stock, par value $0.05 per share (“Common Stock”), and (ii) 1,000,000 shares of preferred stock, par value $0.01 per share (the “Preferred Stock”). 

(b) Each share of Common Stock shall entitle the registered holder thereof to one vote on all matters brought before stockholders of the
Corporation for a vote. 
 (c) The holders of shares of Common Stock shall not have cumulative voting rights. 

(d) 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. 







 (e) Upon adoption by the Board of Directors of a resolution or resolutions regarding Preferred
Stock, a Certificate of Designation of Preferences and Rights of Preferred Stock, setting forth the voting powers, designations, preferences, rights, qualifications and limitations with respect to Preferred Stock, shall be filed in accordance with
the applicable requirements of the laws of the State of Delaware, and, once filed, such Certificate of Designation shall be incorporated as an integral part of this Article FOURTH and may not be amended or changed without the consent of a majority
of the outstanding shares of such series of Preferred Stock then outstanding. 
 (f) Except as otherwise provided in any resolution or
resolutions of the Board of Directors providing for the issuance of any particular series of Preferred Stock, the number of shares of stock of any such series so set forth in such resolution or resolutions may be increased (but not above the total
number of authorized shares of Preferred Stock) or decreased (but not below the number of shares of such series then outstanding) by a resolution or resolutions likewise adopted by the Board of Directors. In case the authorized number of shares of
any such series of Preferred Stock shall be decreased, the shares representing such decrease shall, unless otherwise provided in the resolution or resolutions of the Board of Directors providing for the issuance thereof, resume the status of
authorized but unissued shares of Preferred Stock. 
 (g) Except as otherwise provided in any resolution or resolutions of the Board of
Directors providing for the issuance of any particular series of Preferred Stock, Preferred Stock redeemed or otherwise acquired by the Corporation shall assume the status of authorized but unissued Preferred Stock and shall be unclassified as to
series and may thereafter, subject to the provisions of this Article FOURTH and to any restrictions contained in any resolution or resolutions of the Board of Directors providing for the issuance of any such series of Preferred Stock, be reissued in
the same manner as other authorized but unissued Preferred Stock. 
 FIFTH: The business and affairs of the Corporation shall be managed by
or under the direction of the Board of Directors in accordance with the following: 
 (a) The number of directors constituting the entire
Board of Directors shall be not less than three (3) directors, nor more than twelve (12) directors, the exact number within such limits to be determined from time to time by resolution adopted by the affirmative vote of a majority of the
entire Board of Directors, provided however, that the number of directors shall not be reduced so as to shorten the term of any director at that time in office. 

(b) Immediately following the effective time of the merger (the “Merger”) of Willbros Merger, Inc., a Delaware corporation and
wholly-owned subsidiary of the Corporation, with and into Willbros Group, Inc., a Republic of Panama corporation, and until the 2019 annual meeting of stockholders, the Board of Directors shall be divided into three classes, designated as
Class I, Class II and Class III. All classes shall be as nearly equal in number as possible, and no class shall include less than one (1) director. Commencing with the 2017 annual meeting of stockholders, directors to replace
those whose terms expire at each annual meeting shall be elected to hold office for a term expiring at the next annual meeting of stockholders. The division of directors into classes shall terminate at the 2019 annual meeting of stockholders. Each
director shall hold office until the expiration of that director’s term and until that director’s successor is elected and qualifies or until that director’s earlier death, resignation or removal. If the number of directors is changed
in accordance with the terms of this Certificate of Incorporation prior to the 2019 annual meeting of stockholders, any increase or decrease shall be apportioned among the classes so as to maintain the number of directors in each class as nearly
equal in number as possible. 

  
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 (c) Any vacancies in the Board of Directors for any reason, and any directorships resulting from
any increase in the number of directors, may be filled by the Board of Directors, acting by a majority of the directors then in office, although less than a quorum, and any director so chosen shall hold office until such director’s successor is
elected and qualifies, and if the Board of Directors at such time is classified, until the next election of the class for which such director shall have been chosen, or until such director’s earlier death, resignation or removal. 

(d) Notwithstanding any other provisions of this Certificate of Incorporation or the Bylaws of the Corporation (and notwithstanding the fact
that some lesser percentage may be specified by law, this Certificate of Incorporation or the Bylaws of the Corporation), (i) prior to the 2019 annual meeting of stockholders, any director or the entire Board of Directors may be removed at any time
by the affirmative vote of a majority of the outstanding shares of stock of the Corporation entitled to vote on that matter, but only for cause and (ii) from and after the 2019 annual meeting of stockholders, any director or the entire Board of
Directors may be removed at any time by the affirmative vote of a majority of the outstanding shares of stock of the Corporation entitled to vote on that matter, with or without cause. 

(e) 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 (including the resolutions adopted by the Board of Directors pursuant to Article FOURTH). 

SIXTH: 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 the further elimination or limitation
of the 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 SIXTH shall not adversely affect
any right 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. 

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. 

  
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 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 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 advancement 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 Bylaws of the Corporation, any statute, agreement, vote of stockholders or disinterested directors or otherwise. Any repeal or modification of this Article
SEVENTH 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: Immediately following the effective time of the Merger, no action required to be taken or which
may be taken at any annual or special meeting of stockholders of the Corporation may be taken without a meeting, and the power of stockholders to consent in writing, without a meeting, to the taking of any action is specifically denied. Advance
notice of stockholder nominations for the election of directors and of business to be brought by stockholders before any meeting of the stockholders of the Corporation shall be given in the manner provided in the Bylaws of the Corporation. Elections
of directors need not be by written ballot unless the Bylaws of the Corporation shall so provide. 
 NINTH: Meetings of stockholders may be
held within or without the State of Delaware, as the Bylaws 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 Bylaws of the Corporation. 
 TENTH: 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 Bylaws. The Corporation’s Bylaws also may be adopted, amended, altered or repealed by the
affirmative vote of the holders of at least a majority of the voting power of the shares entitled to vote at an election of directors. 

ELEVENTH: 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 in this Certificate of Incorporation, the Corporation’s Bylaws or the GCL, and all rights herein conferred upon stockholders are granted subject to such reservation. 

  
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 TWELFTH: Whenever a compromise or arrangement is proposed between the Corporation and its
creditors or any class of them and/or between the Corporation and its stockholders or any class of them, any court of equitable jurisdiction within the State of Delaware may, on the application in a summary way of the Corporation or of any creditor
or stockholder thereof or on the application of any receiver or receivers appointed for the Corporation under Section 291 of Title 8 of the Delaware Code or on the application of trustees in dissolution or of any receiver or receivers appointed
for the Corporation under Section 279 of Title 8 of the Delaware Code, order a meeting of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, to be summoned in such
manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, agree to any compromise
or arrangement and to any reorganization of the Corporation as consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to which the said application has been
made, be binding on all the creditors or class of creditors, and/or on all the stockholders or class of stockholders, of the Corporation, as the case may be, and also on the Corporation. 

THIRTEENTH: The name and mailing address of the Sole Incorporator are as follows: 

 

			
	Name:	  	                Address:
	Robert J. Melgaard                                	  	Conner & Winters, LLP
		  	4000 One Williams Center
		  	Tulsa, Oklahoma 74172-0148


 I, THE UNDERSIGNED, being the Sole Incorporator hereinbefore named, for the purpose of forming a
corporation pursuant to the GCL, do make this Certificate, hereby declaring and certifying that this is my act and deed and the facts herein stated are true, and accordingly have hereunto set my hand this 10th day of November, 2008. 
  

	
	 /s/ Robert J. Melgaard

	Robert J. Melgaard



  
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