EX-3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

BUILDERS FIRSTSOURCE, INC.

BUILDERS FIRSTSOURCE, INC. (the "Corporation"), a corporation organized and existing under the General Corporation Law of the State of Delaware (“DGCL”), does hereby certify as follows:

That the Corporation was originally incorporated under the name BSL Holdings, Inc. The original Certificate of Incorporation of the Corporation was filed with the office of the Secretary of State of the State of Delaware on March 4, 1998.

That an Amended and Restated Certificate of Incorporation of the Corporation was filed with the Secretary of State of the State of Delaware on June 27, 2005.

That a Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Corporation was filed with the Secretary of State of the State of Delaware on December 31, 2020.

That, at a meeting of the Board of Directors of the Corporation (the “Board of Directors”), resolutions were duly adopted restating and further amending the Amended and Restated Certificate of Incorporation of the Corporation (as amended by the Certificate of Amendment to the Amended and Restated Certificate of Incorporation), declaring this Amended and Restated Certificate of Incorporation to be advisable and directing that this Amended and Restated Certificate of Incorporation be considered at the next Annual Meeting of Stockholders of the Corporation.

That this Amended and Restated Certificate of Incorporation restates and integrates and further amends the provisions of the Amended and Restated Certificate of Incorporation (as amended by the Certificate of Amendment to the Amended and Restated Certificate of Incorporation) and was duly adopted by the Board of Directors and the stockholders of the Corporation in accordance with Sections 242 and 245 of the DGCL.

That the text of the Amended and Restated Certificate of Incorporation hereby reads as follow:

FIRST: The name of the Corporation is Builders FirstSource, Inc. (hereinafter the "Corporation").

SECOND: The address of the registered office of the Corporation in the State of Delaware is 1209 Orange Street, in the City of Wilmington, County of New Castle, 19801. The name of its registered agent at that address is The Corporation Trust 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 DGCL.

FOURTH: (1) Authorized Capital Stock. The total number of shares of stock that the Corporation shall have authority to issue is 310,000,000, of which the Corporation shall have the authority to issue 300,000,000 shares of Common Stock, each having a par value of $0.01 per share, and 10,000,000 shares of Preferred Stock, each having a par value of $0.01 per share.

(2)

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

(a)

No Cumulative Voting. The holders of shares of Common Stock shall not have cumulative voting rights.

(b)

Dividends; Stock Splits. Subject to the rights of the holders of Preferred Stock, and subject to any other provisions of this Amended and Restated 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.

(3)

Preferred Stock. The Board of Directors is 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 and as may be permitted by the DGCL, 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.

(4)

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 stock-holders to make, alter, amend, change, add to, or repeal the By-Laws of the Corporation.

(3)

The Board of Directors shall consist of not less than 3 nor more than 13 members, the exact number of which shall be fixed from time to time by resolution adopted by the affirmative vote

of a majority of the Board of Directors. Election of directors need not be by written ballot unless the By-Laws so provide.

(4)

Until the election of directors at the annual meeting of stockholders to be held in 2028, the directors, other than those who may be elected by the holders of any series of Preferred Stock under specified circumstances, shall be classified, with respect to the time for which they severally hold office, into three classes, designated Class I, Class II, and Class III, as nearly equal in number as may be possible, Class I being the class most recently elected for a term expiring at the annual meeting of stockholders to be held in 2027, Class II being the class to be elected at the annual meeting of stockholders to be held in 2025 for a term expiring at the annual meeting of stockholders to be held in 2028, and Class III being the class most recently elected for a term expiring at the annual meeting of stockholders to be held in 2026, with each class to hold office until its successor is duly elected and qualified. Until the annual meeting of stockholders to be held in 2026, directors elected to succeed those directors whose terms expire shall be elected for a term of office to expire at the third succeeding annual meeting of stockholders after their election. Commencing with the election of directors at the annual meeting of stockholders to be held in 2026, all directors shall be elected for a one year term expiring at the next annual meeting of stockholders, and commencing with the election of directors at the annual meeting of stockholders to be held in 2028, the classification of the Board of Directors shall terminate.

(5)

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. Any director may resign at any time in accordance with the By-Laws.

(6)

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 only 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 only by a majority of the Board of Directors then in office, even if less than a quorum, or by a sole remaining director. Any director elected to fill a vacancy not resulting from an increase in the number of directors shall have the same remaining term as that of his or her predecessor. 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 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 generally in the election of directors; provided that until the election of the directors at the annual meeting of stockholders to be held in 2028, such removal may be only for cause. 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 Amended and Restated Certificate of Incorporation applicable thereto, and such directors so elected shall not be divided into classes pursuant to this Article FIFTH unless otherwise expressly provided by the terms of such class or series of Preferred Stock.

(7)

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 ; provided, however, that to the extent required by the provisions of Section 102(b)(7) of the DGCL or any successor statute, or any other laws of the State of Delaware, this provision shall not eliminate or limit the liability of a director (i) for any breach of the director's duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the DGCL, or (iv) for any transaction from which the director derived an improper personal benefit. If the DGCL is amended after the date of this Certificate to authorize the further elimination or limitation of the liability of directors, then the liability of a director of the Corporation, in addition to the limitation on personal liability provided in this Certificate, shall be limited to the fullest extent permitted by the DGCL, as so amended. Any repeal or modification of this Clause (7) of

Article FIFTH shall not adversely affect any limitation on the personal liability or 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.

(8)

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 DGCL, 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 that 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 DGCL) 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: Unless otherwise required by law, Special Meetings of Stockholders, for any purpose or purposes, may be called by either the Chairman of the Board of Directors, if there be one, or the Chief Executive Officer, if there be one, and shall be called by any officer at the request in writing of (i) the Board of Directors, or (ii) a committee of the Board of Directors that has been duly designated by the Board of Directors and whose powers and authority include the power to call such meetings. The ability of the stockholders to call a Special Meeting of Stockholders is hereby specifically denied.

EIGHTH: Any action required or permitted to be taken by the stockholders of the Corporation must be effected at a duly called Annual or Special Meeting of Stockholders of the Corporation, and the ability of the stockholders to consent in writing without a meeting to the taking of any action is hereby specifically denied.

NINTH: The Corporation shall not be governed by the provisions of Section 203 of the DGCL.

TENTH: The Corporation shall indemnify its directors and officers to the fullest extent authorized or permitted by applicable 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 TENTH 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 upon receipt by the Corporation of an undertaking by or on behalf of the director or officer receiving advancement to repay the amount advanced if it shall ultimately be determined that such person is not entitled to be indemnified by the Corporation under this Article TENTH.

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 TENTH to directors and officers of the Corporation.

The rights to indemnification and to the advancement of expenses conferred in this Article TENTH shall not be exclusive of any other right that 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, pursuant to the direction (howsoever embodied) of any court of competent jurisdiction, or otherwise.

Any repeal or modification of this Article TENTH by the stockholders of the Corporation shall

not adversely affect any rights to indemnification and to the advancement of expenses of a director, officer, employee, or agent 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.

ELEVENTH: Notwithstanding anything contained in this Certificate of Incorporation or the By-Laws to the contrary, any provision in the By-Laws that provides for more than a majority vote for any action may only be amended or repealed by a supermajority vote equal to the supermajority vote called for in such provision.

TWELFTH: 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; provided, however, that, notwithstanding any other provision of this Amended and Restated 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 sixty-six and two-thirds percent (66.67 %) 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 Amended and Restated Certificate of Incorporation inconsistent with the purpose and intent of Articles FIFTH and TENTH of this Amended and Restated Certificate of Incorporation or this Article TWELFTH.

THIRTEENTH: To the fullest extent permitted by law, no officer of the Corporation shall be personally liable to the Corporation or any of its stockholders for monetary damages for breach of fiduciary duty as an officer; provided, however, that to the extent required by the provisions of Section 102(b)(7) of the DGCL or any successor statute, or any other laws of the State of Delaware, this provision shall not eliminate or limit the liability of an officer (i) for any breach of the officer’s duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) for any transaction from which the officer derived an improper personal benefit, or (iv) in any action by or in the right of the Corporation. If the DGCL is amended after approval by the Corporation’s stockholders of this Article THIRTEENTH to authorize the further elimination or limitation of the liability of officers, then the liability of an officer of the Corporation, in addition to the elimination or limitation on personal liability provided in this Certificate, shall be eliminated or limited to the fullest extent permitted by the DGCL, as so amended. Any repeal or modification of this Article THIRTEENTH shall not adversely affect any limitation on the personal liability or any right or protection of an officer 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. For purposes of this Article THIRTEENTH, “officer” shall have the meaning provided in Section 102(b)(7) of the DGCL, as it presently exists or may hereafter be amended from time to time.

FOURTEENTH: If any provision in this Amended and Restated Certificate of Incorporation is determined to be invalid, void, illegal, or unenforceable, the remaining provisions of this Amended and Restated Certificate of Incorporation shall continue to be valid and enforceable and shall in no way be affected, impaired, or invalidated.

IN WITNESS WHEREOF, the Corporation has caused this Amended and Restated Certificate of Incorporation to be duly executed on its behalf this 27th day of May, 2025.

BUILDERS FIRSTSOURCE, INC.


	By:	/s/ Timothy D. Johnson
		Executive Vice President, General Counsel and Corporate Secretary