1stdibs.Com (DIBS) 8-KAmendments to Articles of Incorporation or Bylaws

Exhibit 3.1

SIXTH AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION OF

1STDIBS.COM, INC.

1stdibs.com, Inc., a corporation organized and existing under the laws of the State of Delaware, hereby certifies as follows:

FIRST: The name of the corporation is 1stdibs.com, Inc.

SECOND: The original certificate of incorporation of the corporation was filed with the Secretary of State of the State of Delaware on March 10, 2000 and most recently amended and restated pursuant to the Fifth Amended and Restated Certificate of Incorporation filed with the Secretary of State of the State of Delaware on February 7, 2019, as amended by the Certificate of Amendment to the Fifth Amended and Restated Certificate of Incorporation filed with the Secretary of State of the State of Delaware on March 11, 2021 and the Certificate of Amendment to the Fifth Amended and Restated Certificate of Incorporation filed with the Secretary of State of the State of Delaware on May 28, 2021 (as so amended, the “Existing Certificate”).

THIRD: Pursuant to Sections 242 and 245 of the General Corporation Law of the State of Delaware, this Amended and Restated Certificate of Incorporation restates, integrates, and further amends the provisions of the Existing Certificate.

FOURTH: The Existing Certificate shall be amended and restated to read in full as follows:

ARTICLE I

The name of the corporation is 1stdibs.com, Inc. (the “Corporation”).

ARTICLE II

The registered agent and the address of the registered offices in the State of Delaware are:

The Corporation Trust Company

c/o Corporation Trust Center

1209 Orange Street

Wilmington, New Castle County, Delaware 19801

ARTICLE III

The purpose of the Corporation is to engage in any lawful act or activity for which a corporation may be organized under the Delaware General Corporation Law (the “DGCL”).

ARTICLE IV

A. Classes of Stock. The total number of shares of all classes of capital stock that the Corporation shall have authority to issue is Four Hundred Ten Million (410,000,000), of which Four Hundred Million (400,000,000) shares shall be Common Stock, $0.01 par value per share (the “Common Stock”), and of which Ten Million (10,000,000) shares shall be Preferred Stock, $0.01 par value per share (the “Preferred Stock”). The number of authorized shares of Common Stock or Preferred Stock may be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative vote of the holders of a majority of the then outstanding shares of Common Stock, without a vote of the holders of the Preferred Stock, or of any series thereof, unless a vote of any such Preferred Stock holders is required pursuant to the provisions established by the board of directors of the Corporation (the “Board”) in the resolution or resolutions providing for the issue of such Preferred Stock, and if such holders of such Preferred Stock are so entitled to vote thereon, then, except as may otherwise be set forth in the certificate of incorporation of the Corporation, as amended from time to time (this “Certificate” or “Certificate of Incorporation”), the only stockholder approval required shall be the affirmative vote of a majority of the voting power of the Common Stock and the Preferred Stock so entitled to vote, voting together as a single class.

B. Preferred Stock. The Preferred Stock may be issued from time to time in one or more series, as determined by the Board. The Board is expressly authorized to provide for the issue, in one or more series, of all or any of the remaining shares of Preferred Stock and, in the resolution or resolutions providing for such issue, to establish for each such series the number of its shares, the voting powers, full or limited, of the shares of such series, or that such shares shall have no voting powers, and the designations, preferences, and relative participating, optional, or other special rights of the shares of such series, and the qualifications, limitations, or restrictions thereof. The Board is also expressly authorized (unless forbidden in the resolution or resolutions providing for such issue) to increase or decrease (but not below the number of shares of such series then outstanding) the number of shares of any series subsequent to the issuance of shares of that series. In case the number of shares of any such series shall be so decreased, the shares constituting such decrease shall resume the status that they had prior to the adoption of the resolution originally fixing the number of shares of such series. Unless the Board provides to the contrary in the resolution which fixes the designations, preferences, and rights of a series of Preferred Stock, neither the consent by series, or otherwise, of the holders of any outstanding Preferred Stock nor the consent of the holders of any outstanding Common Stock shall be required for the issuance of any new series of Preferred Stock regardless of whether the rights and preferences of the new series of Preferred Stock are senior or superior, in any way, to the outstanding series of Preferred Stock or the Common Stock.

C. Common Stock.

1. Relative Rights of Preferred Stock and Common Stock. All preferences, voting powers, relative participating, optional, or other special rights and privileges, and qualifications, limitations, or restrictions of the Common Stock are expressly made subject and subordinate to those that may be fixed with respect to any shares of the Preferred Stock.

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2. Voting Rights. Except as otherwise required by law or this Certificate, each holder of Common Stock shall have one vote in respect of each share of stock held by such holder of record on the books of the Corporation. No holder of shares of Common Stock shall have the right to cumulative votes.

3. Dividends. Subject to the preferential rights of the Preferred Stock and except as otherwise required by law or this Certificate, the holders of shares of Common Stock shall be entitled to receive dividends, when, as and if declared by the Board, out of the assets of the Corporation which are by law available therefor.

4. Dissolution, Liquidation, or Winding Up. In the event of any dissolution, liquidation, or winding up of the affairs of the Corporation, after distribution in full of the preferential amounts, if any, to be distributed to the holders of shares of the Preferred Stock, holders of Common Stock shall be entitled, except as otherwise required by law or this Certificate, to receive all of the remaining assets of the Corporation of whatever kind available for distribution to stockholders ratably in proportion to the number of shares of Common Stock held by them respectively.

5. Consideration for Shares. The Common Stock authorized by this Certificate shall be issued for such consideration as shall be fixed, from time to time, by the Board.

ARTICLE V

In furtherance and not in limitation of the powers conferred by the laws of the State of Delaware:

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:

A. Board of Directors. The business and affairs of the Corporation shall be managed by or under the direction of the board of directors. In addition to the powers and authority expressly conferred upon them by statute or by this Certificate of Incorporation or the bylaws of the Corporation (the “Bylaws”), 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.

B. Election of Directors. The directors of the Corporation need not be elected by written ballot unless the Bylaws so provide.

C. Action by Stockholders. Subject to the rights of the holders of any series of Preferred Stock, 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 may not be effected by any consent in writing by such stockholders.

D. Special Meetings of Stockholders. Special meetings of stockholders of the Corporation may be called only by the Board acting pursuant to a resolution adopted by a majority of the Whole Board or by the Chairman of the Board, the Chief Executive Officer, or

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the President of the Corporation. For purposes of this Certificate of Incorporation, the term “Whole Board” shall mean the total number of authorized directors whether or not there exist any vacancies in previously authorized directorships.

E. Annual Meeting of Stockholders. An annual meeting of stockholders, for the election of directors to succeed those whose terms expire and for the transaction of such other business as may properly come before the meeting, shall be held at such date and time as the Board shall fix.

ARTICLE VI

A. Number and Terms of Directors. Subject to the rights of the holders of any series of Preferred Stock to elect additional directors under specified circumstances, the number of directors shall be fixed from time to time exclusively by the Board pursuant to a resolution adopted by a majority of the Whole Board. The directors, other than those who may be elected by the holders of any series of Preferred Stock under specified circumstances, shall be divided into three classes, with the term of office of the first class to expire at the Corporation’s first annual meeting of stockholders following the adoption of this Article VI (the “Effective Time”), the term of office of the second class to expire at the Corporation’s second annual meeting of stockholders following the Effective Time, and the term of office of the third class to expire at the Corporation’s third annual meeting of stockholders following the Effective Time, with each director to hold office until his or her successor shall have been duly elected and qualified. The Board is authorized to assign members of the Board already in office at the Effective Time to such classes as it determines. At each annual meeting of stockholders, (i) 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, with each director to hold office until his or her successor shall have been duly elected and qualified; and (ii) if authorized by a resolution of the Board, directors may be elected to fill any vacancy on the Board, regardless of how such vacancy shall have been created.

B. Quorum. A majority of the Whole Board shall constitute a quorum for all purposes at any meeting of the Board, and, except as otherwise expressly required by law or by this Certificate of Incorporation, all matters shall be determined by the affirmative vote of a majority of the directors present at any meeting at which a quorum is present.

C. Board Vacancies. Subject to the rights of the holders of any series of Preferred Stock then outstanding, newly created directorships resulting from any increase in the authorized number of directors or any vacancies in the Board resulting from death, resignation, disqualification, removal from office, or other cause shall, unless otherwise required by law or by resolution of the Board, be filled only by a majority vote of the directors then in office, though less than a quorum (and not by stockholders), and directors so chosen shall serve for a term expiring at the annual meeting of stockholders at which the term of office of the class to which they have been chosen expires, with each director to hold office until his or her successor shall have been duly elected and qualified. No decrease in the authorized number of directors shall shorten the term of any incumbent director.

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D. Notice. 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.

E. Removal. Subject to the rights of the holders of any series of Preferred Stock then outstanding, any director, or the entire Board, may be removed from office at any time, but only for cause and only by the affirmative vote of the holders of at least sixty-six and two-thirds percent (66-2/3%) of the voting power of all of the then-outstanding shares of capital stock of the Corporation then entitled to vote at an election of directors, voting together as a single class.

ARTICLE VII

The Board is expressly empowered to adopt, amend, or repeal bylaws of the Corporation. Any adoption, amendment, or repeal of the Bylaws by the Board shall require the approval of a majority of the Whole Board. The stockholders shall also have power to adopt, amend, or repeal the Bylaws; provided, however, that, in addition to any vote of the holders of any class or series of stock of the Corporation required by law or by this Certificate of Incorporation, the affirmative vote of the holders of at least sixty-six and two-thirds percent (66-2/3%) of the voting power of all of the then outstanding shares of the capital stock of the Corporation entitled to vote thereon, voting together as a single class, shall be required to adopt, amend, or repeal any provision of the Bylaws.

ARTICLE VIII

A. Limitation on Liability. To the fullest extent permitted by the DGCL, as the same exists or as may hereafter be amended (including, but not limited to Section 102(b)(7) of the DGCL), a director of the Corporation shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director. If the DGCL hereafter is amended to further eliminate or limit the liability of directors, then the liability of a director of the Corporation, in addition to the limitation on personal liability provided herein, shall be limited to the fullest extent permitted by the amended DGCL. Any repeal or modification of this paragraph by the stockholders of the Corporation shall be prospective only, and shall not adversely affect any limitation on the personal liability of a director of the Corporation existing at the time of such repeal or modification.

B. Indemnification. To the fullest extent permitted by applicable law, the Corporation is authorized to provide indemnification of (and advancement of expenses to) directors, officers, employees, and agents of the Corporation (and any other persons to which DGCL permits the Corporation to provide indemnification) through Bylaw provisions, agreements with such persons, vote of stockholders or disinterested directors, or otherwise.

C. Repeal and Modification. Any repeal or modification of the foregoing provisions of this Article VIII shall not adversely affect any right or protection existing hereunder immediately prior to such repeal or modification.

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ARTICLE IX

A. Exclusive Forum; Delaware Chancery Court. To the fullest extent permitted by law, and unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or, if that court lacks subject matter jurisdiction, another federal or state court situated in the State of Delaware), shall be the sole and exclusive forum for (a) any derivative action or proceeding brought in the name or right of the Corporation or on its behalf, (b) any action or proceeding asserting a claim for breach of any fiduciary duty owed by any director, officer, employee, agent, or stockholder of the Corporation to the Corporation or the Corporation’s stockholders, (c) any action or proceeding arising or asserting a claim arising pursuant to any provision of the DGCL or any provision of this Certificate or the Bylaws, (d) any action or proceeding asserting a claim against a stockholder of the Corporation, or (e) any action or proceeding asserting a claim governed by the internal affairs doctrine, including, without limitation, any action to interpret, apply, enforce, or determine the validity of this Certificate or the Bylaws. Any person or entity purchasing or otherwise acquiring any interest in shares of capital stock of the Corporation shall be deemed to have notice of and consented to the provisions of this section.

B. Exclusive Forum; Federal District Courts. Unless the Corporation consents in writing to the selection of an alternative forum, the federal district courts of the United States shall, to the fullest extent permitted by law, be the sole and exclusive forum for the resolution of any complaint asserting a cause of action under the Securities Act of 1933. Any person or entity purchasing or otherwise acquiring any interest in shares of capital stock of the Corporation shall be deemed to have notice of and consented to the provisions of this section. Failure to enforce the provisions contained in this Article IX would cause the Corporation irreparable harm, and the Corporation shall be entitled to equitable relief, including injunctive relief and specific performance, to enforce the foregoing provisions.

ARTICLE X

The affirmative vote of the holders of at least sixty-six and two-thirds percent (66-2/3%) of the voting power of the shares of the capital stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class, shall be required to amend in any respect or repeal this Article X or any of Articles V, VI, VII, VIII, or IX.

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IN WITNESS WHEREOF, the Corporation has caused this Certificate to be signed by its Chief Executive Officer this 14th day of June, 2021.