Exhibit 3.1

Syndax Pharmaceuticals, Inc.

a Delaware Corporation

AMENDED AND RESTATED BYLAWS

December 18, 2025

Syndax Pharmaceuticals, Inc.

a Delaware Corporation

AMENDED AND RESTATED BYLAWS

TABLE OF CONTENTS


Article I – OFFICES		1
Section 1.1	Registered Office	1
Section 1.2	Other Offices	1
Article II – STOCKHOLDERS		1
Section 2.1	Place of Meetings	1
Section 2.2	Annual Meetings	1
Section 2.3	Special Meetings	1
Section 2.4	Notice of Meetings	1
Section 2.5	Adjournments	2
Section 2.6	Quorum	2
Section 2.7	Organization	2
Section 2.8	Voting; Proxies	3
Section 2.9	Fixing Date for Determination of Stockholders of Record	3
Section 2.10	List of Stockholders Entitled to Vote	3
Section 2.11	Inspectors of Election	4
Section 2.12	Conduct of Meetings	4
Section 2.13	Notice of Stockholder Business; Nominations	5
Article III – BOARD OF DIRECTORS		9
Section 3.1	Number; Qualifications	9
Section 3.2	Election; Resignation; Removal	9
Section 3.3	Vacancies and Newly Created Directorships	9
Section 3.4	Regular Meetings	9
Section 3.5	Special Meetings	9
Section 3.6	Remote Meetings Permitted	10
Section 3.7	Quorum; Vote Required for Action	10
Section 3.8	Organization	10
Section 3.9	Written Action by Directors	10
Section 3.10	Powers	10
Section 3.11	Compensation of Directors	10
Article IV – COMMITTEES		10
Section 4.1	Committees	10
Section 4.2	Committee Rules	11
Article V – OFFICERS		11


Section 5.1	Generally	11
Section 5.2	Chairperson of the Board	11
Section 5.3	President	11
Section 5.4	Vice President	11
Section 5.5	Chief Financial Officer	12
Section 5.6	Treasurer	12
Section 5.7	Secretary	12
Section 5.8	Delegation of Authority	12
Section 5.9	Removal	12
Article VI – STOCK		12
Section 6.1	Certificates	12
Section 6.2	Lost, Stolen or Destroyed Stock Certificates; Issuance of New Certificates	12
Section 6.3	Other Regulations	13
Article VII – INDEMNIFICATION AND ADVANCEMENT OF EXPENSES		13
Section 7.1	Indemnification	13
Section 7.2	Advancement of Expenses	14
Section 7.3	Actions Initiated Against The Corporation	14
Section 7.4	Contract Rights	14
Section 7.5	Claims	15
Section 7.6	Determination of Entitlement to Indemnification	16
Section 7.7	Non-Exclusive Rights	16
Section 7.8	Insurance	16
Section 7.9	Severability	16
Section 7.10	Miscellaneous	17
Article VIII – NOTICES		17
Section 8.1	Notice	17
Section 8.2	Waiver of Notice	18
Article IX – MISCELLANEOUS		18
Section 9.1	Fiscal Year	18
Section 9.2	Seal	18
Section 9.3	Form of Records	18
Section 9.4	Reliance upon Books and Records	18
Section 9.5	Certificate of Incorporation Governs	19
Section 9.6	Severability	19
Article X – AMENDMENT		19
Section 10.1	By the Board	19
Section 10.2	By the Stockholders	19

Syndax Pharmaceuticals, Inc.

a Delaware Corporation

AMENDED AND RESTATED BYLAWS

December 18, 2025

Article I – OFFICES

Section 1.1 Registered Office. The registered office of Syndax Pharmaceuticals, Inc. (the “Corporation”) shall be at 2711 Centerville Road, Suite 400, City of Wilmington, County of New Castle, Delaware 19808.

Section 1.2 Other Offices. The Corporation may also have offices at such other places both within and without the State of Delaware as the Corporation’s Board of Directors (the “Board”) may from time to time determine or as the business of the Corporation may require.

Article II – STOCKHOLDERS

Section 2.1 Place of Meetings. Meetings of stockholders may be held at such place within or without the State of Delaware as may be designated from time to time by the Board. The Board may, in its sole discretion, determine that the meeting shall not be held at any place, but may instead be held solely by means of remote communications as authorized by Delaware law.

Section 2.2 Annual Meetings. The annual meeting of stockholders for the election of directors and for the transaction of such other business as may properly be brought before the meeting shall be held at such place, if any, on such date and at such time as fixed by the Board and stated in the Corporation’s notice of the meeting.

Section 2.3 Special Meetings. Subject to the rights of any holders of the Preferred Stock, only the chairperson of the Board or a majority of the Board shall be permitted to call a special meeting of stockholders, for any purpose or purposes prescribed in the Corporation’s notice of the meeting and shall be held at such place, if any, on such date and at such time as the Board may fix. Business transacted at any special meeting of stockholders shall be confined to the purpose or purposes stated in the notice of meeting.

Section 2.4 Notice of Meetings. Notice of all meetings of stockholders shall be given in writing or by electronic transmission in the manner provided by law (including, without limitation, as set forth in Section 8.1.1 of these Bylaws) stating the date, time and place, if any, of the meeting, the means of remote communications, if any, by which stockholders and proxy holders may be deemed to be present in person and vote at such meeting, the record date for determining the stockholders entitled to vote at the meeting (if such date is different from the record date for stockholders entitled to notice of the meeting) and, in the case of a special meeting, the purpose or purposes for which the meeting is called. Unless otherwise required by applicable law or the Amended and Restated Certificate of Incorporation of the Corporation (the “Certificate of Incorporation”), such notice shall be given not less than ten (10), nor more than sixty (60)

days, before the date of the meeting to each stockholder of record entitled to vote at such meeting as of the record date for determining the stockholders entitled to notice of the meeting.

Section 2.5 Adjournments. The chairperson of the meeting, or, in the absence of such person, any officer entitled to preside at or to act as Secretary of such meeting, or the holders of a majority in voting power of the shares of stock present or represented at the meeting and entitled to vote, although less than a quorum, shall have the power to adjourn the meeting to another time, date and place (if any). Any meeting of stockholders may adjourn from time to time, and notice need not be given of any such adjourned meeting if the time, date and place (if any) thereof and the means of remote communications (if any) by which stockholders and proxy holders may be deemed to be present in person and vote at such adjourned meeting are announced at the meeting at which the adjournment is taken; provided, however, that if the adjournment is for more than thirty (30) days, then a notice of the adjourned meeting shall be given to each stockholder of record entitled to vote at the meeting. If after the adjournment a new record date for determination of stockholders entitled to vote is fixed for the adjourned meeting, the Board shall fix as the record date for determining stockholders entitled to notice of such adjourned meeting the same or an earlier date as that fixed for determination of stockholders entitled to vote at the adjourned meeting, and shall give notice of the adjourned meeting to each stockholder of record as of the record date so fixed for notice of such adjourned meeting. At the adjourned meeting the Corporation may transact any business that might have been transacted at the original meeting. To the fullest extent permitted by law, the Board may postpone, reschedule or cancel any previously scheduled special or annual meeting of stockholders before it is to be held.

Section 2.6 Quorum. At each meeting of stockholders the holders of a majority of the voting power of the issued and outstanding shares of capital stock of the Corporation entitled to vote at the meeting, present in person or represented by proxy, shall constitute a quorum for the transaction of business, unless otherwise required by applicable law, the Certificate of Incorporation or these Bylaws. If a quorum shall fail to attend any meeting, the chairperson of the meeting or the holders of a majority of the voting power of the shares entitled to vote who are present, in person or by proxy, at the meeting may adjourn the meeting. Shares of the Corporation’s stock belonging to the Corporation (or to another corporation, if a majority of the shares entitled to vote in the election of directors of such other corporation are held, directly or indirectly, by the Corporation), shall neither be entitled to vote nor be counted for quorum purposes; provided, however, that the foregoing shall not limit the right of the Corporation or any other corporation to vote stock, including but not limited to its own stock, held by it in a fiduciary capacity and to count such shares for purposes of determining a quorum.

Section 2.7 Organization. Meetings of stockholders shall be presided over by such person as the Board may designate, or, in the absence of such a person, the chairperson of the Board, or, in the absence of such person, the Chief Executive Officer or the President of the Corporation, or, in the absence of such person, such person as may be chosen by the holders of a majority of the voting power of the shares entitled to vote who are present, in person or by proxy, at the meeting. The Secretary of the Corporation shall act as secretary of the meeting, but in such person’s absence the chairperson of the meeting may appoint any person to act as secretary of the meeting.

Section 2.8 Voting; Proxies. Each stockholder entitled to vote at a meeting of stockholders may authorize another person or persons to act for such stockholder by proxy. Such a proxy may be prepared, transmitted and delivered in any manner permitted by applicable law. Except as may be required in the Certificate of Incorporation, directors shall be elected by a plurality of the votes of the shares present in person or represented by proxy at the meeting and entitled to vote on the election of directors. Unless otherwise provided by applicable law, the Certificate of Incorporation or these Bylaws, every matter other than the election of directors shall be decided by the affirmative vote of the holders of a majority of the voting power of the shares of stock entitled to vote on such matter that are present in person or represented by proxy at the meeting and are voted for or against the matter.

Section 2.9 Fixing Date for Determination of Stockholders of Record.

(a) In order that the Corporation may determine the stockholders entitled to notice of any meeting of stockholders or any adjournment thereof, the Board may fix a record date, which record date shall not precede the date upon which the resolution fixing the record date is adopted by the Board, and which record date shall, unless otherwise required by law, not be more than sixty (60) nor less than ten (10) days before the date of such meeting. If the Board so fixes a date, such date shall also be the record date for determining the stockholders entitled to vote at such meeting unless the Board determines, at the time it fixes such record date, that a later date on or before the date of the meeting shall be the date for making such determination. If no record date is fixed by the Board, the record date for determining stockholders entitled to notice of or to vote at a meeting of stockholders shall be at the close of business on the day next preceding the day on which notice is given, or, if notice is waived, at the close of business on the day next preceding the day on which the meeting is held. A determination of stockholders of record entitled to notice of or to vote at a meeting of stockholders shall apply to any adjournment of the meeting; provided, however, that the Board may fix a new record date for determination of stockholders entitled to vote at the adjourned meeting, and in such case shall also fix as the record date for stockholders entitled to notice of such adjourned meeting the same or an earlier date as that fixed for determination of stockholders entitled to vote in accordance herewith at the adjourned meeting.

(b) In order that the Corporation may determine the stockholders entitled to receive payment of any dividend or other distribution or allotment of any rights, or entitled to exercise any rights in respect of any change, conversion or exchange of stock or for the purpose of any other lawful action, the Board may fix a record date, which shall not be more than sixty (60) days prior to such other action. If no such record date is fixed, the record date for determining stockholders for any such purpose shall be at the close of business on the day on which the Board adopts the resolution relating thereto.

Section 2.10 List of Stockholders Entitled to Vote. The officer who has charge of the stock ledger shall prepare and make, at least ten (10) days before every meeting of stockholders, a complete list of stockholders entitled to vote at any meeting of stockholders (provided, however, if the record date for determining stockholders entitled to vote is less than ten (10) days before the date of the meeting, the list shall reflect the stockholders entitled to vote as of the tenth day before the meeting date), arranged in alphabetical order and showing the address of each stockholder and the number of shares registered in the name of each stockholder. Such list shall be open to the examination of any stockholder, for any purpose germane to the meeting, during ordinary business

hours, for a period of at least ten (10) days prior to the meeting, either on a reasonably accessible electronic network as permitted by law (provided that the information required to gain access to the list is provided with the notice of the meeting) or during ordinary business hours at the principal place of business of the Corporation. If the meeting is held at a location where stockholders may attend in person, the list shall also be produced and kept at the time and place of the meeting during the whole time thereof and may be inspected by any stockholder who is present at the meeting. If the meeting is held solely by means of remote communication, then the list shall be open to the examination of any stockholder during the whole time of the meeting on a reasonably accessible electronic network, and the information required to access the list shall be provided with the notice of the meeting. Except as otherwise provided by law, the stock ledger shall be the only evidence as to who are the stockholders entitled to examine the list of stockholders required by this Section 2.10 or to vote in person or by proxy at any meeting of stockholders.

Section 2.11 Inspectors of Election. The Corporation may, and shall if required by law, in advance of any meeting of stockholders, appoint one or more inspectors of election, who may be employees of the Corporation, to act at the meeting or any adjournment thereof and to make a written report thereof. The Corporation may designate one or more persons as alternate inspectors to replace any inspector who fails to act. In the event that no inspector so appointed or designated is able to act at a meeting of stockholders, the chairperson of the meeting shall appoint one or more inspectors to act at the meeting. Each inspector, before entering upon the discharge of his or her duties, shall take and sign an oath to execute faithfully the duties of inspector with strict impartiality and according to the best of his or her ability. The inspector or inspectors so appointed or designated shall (a) ascertain the number of shares of capital stock of the Corporation outstanding and the voting power of each such share, (b) determine the shares of capital stock of the Corporation represented at the meeting and the validity of proxies and ballots, (c) count all votes and ballots, (d) determine and retain for a reasonable period a record of the disposition of any challenges made to any determination by the inspectors, and (e) certify their determination of the number of shares of capital stock of the Corporation represented at the meeting and such inspectors’ count of all votes and ballots. Such certification and report shall specify such other information as may be required by law. In determining the validity and counting of proxies and ballots cast at any meeting of stockholders of the Corporation, the inspectors may consider such information as is permitted by applicable law. No person who is a candidate for an office at an election may serve as an inspector at such election.

Section 2.12 Conduct of Meetings. The date and time of the opening and the closing of the polls for each matter upon which the stockholders will vote at a meeting shall be announced at the meeting by the person presiding over the meeting. The Board may adopt by resolution such rules and regulations for the conduct of the meeting of stockholders as it shall deem appropriate. Except to the extent inconsistent with such rules and regulations as adopted by the Board, the person presiding over any meeting of stockholders shall have the right and authority to convene and (for any or no reason) to recess and/or adjourn the meeting, to prescribe such rules, regulations and procedures and to do all such acts as, in the judgment of such presiding person, are appropriate for the proper conduct of the meeting. Such rules, regulations or procedures, whether adopted by the Board or prescribed by the presiding person of the meeting, may include, without limitation, the following: (a) the establishment of an agenda or order of business for the meeting; (b) rules and procedures for maintaining order at the meeting and the safety of those present; (c) limitations on attendance at or participation in the meeting to stockholders entitled to vote at the meeting, their

duly authorized and constituted proxies or such other persons as the presiding person of the meeting shall determine; (d) restrictions on entry to the meeting after the time fixed for the commencement thereof; and (e) limitations on the time allotted to questions or comments by participants. The presiding person at any meeting of stockholders, in addition to making any other determinations that may be appropriate to the conduct of the meeting, shall, if the facts warrant, determine and declare to the meeting that a matter or business was not properly brought before the meeting and if such presiding person should so determine, such presiding person shall so declare to the meeting and any such matter or business not properly brought before the meeting shall not be transacted or considered. Unless and to the extent determined by the Board or the person presiding over the meeting, meetings of stockholders shall not be required to be held in accordance with the rules of parliamentary procedure.

Section 2.13 Notice of Stockholder Business; Nominations.

2.13.1 Annual Meeting of Stockholders.

(a) Nominations of persons for election to the Board and the proposal of business to be considered by the stockholders shall be made at an annual meeting of stockholders only (i) pursuant to the Corporation’s notice of such meeting (or any supplement thereto), (ii) by or at the direction of the Board or any committee thereof or (iii) by any stockholder of the Corporation who was a stockholder of record at the time of giving of the notice provided for in this Section 2.13, who is entitled to vote at such meeting and who complies with the notice procedures set forth in this Section 2.13.

(b) For nominations or other business to be properly brought before an annual meeting by a stockholder pursuant to Section 2.13.1(a)(iii):

(i) the stockholder must have given timely notice thereof in writing to the Secretary of the Corporation;

(ii) such other business (other than the nominations of persons for election to the Board) must otherwise be a proper matter for stockholder action;

(iii) if the stockholder, or the beneficial owner on whose behalf any such proposal or nomination is made, has provided the Corporation with a Solicitation Notice, as that term is defined in this Section, such stockholder or beneficial owner must, in the case of a proposal, have delivered a proxy statement and form of proxy to holders of at least the percentage of the Corporation’s voting shares required under applicable law to carry any such proposal, or, in the case of a nomination or nominations, have delivered a proxy statement and form of proxy to holders of a percentage of the Corporation’s voting shares reasonably believed by such stockholder or beneficial holder to be sufficient to elect the nominee or nominees proposed to be nominated by such stockholder, and must, in either case, have included in such materials the Solicitation Notice; and

(iv) if no Solicitation Notice relating thereto has been timely provided pursuant to this Section, the stockholder or beneficial owner proposing such

business or nomination must not have solicited a number of proxies sufficient to have required the delivery of such a Solicitation Notice under this Section.

To be timely, a stockholder’s notice must be delivered to the Secretary at the principal executive offices of the Corporation not later than the close of business on the ninetieth (90th) day nor earlier than the close of business on the one hundred twentieth (120th) day prior to the first anniversary of the preceding year’s annual meeting; provided, however, that in the event that no annual meeting was held during the preceding year or the date of the annual meeting is more than thirty (30) days before or more than sixty (60) days after the first anniversary date of the preceding year’s annual meeting, notice by the stockholder to be timely must be so delivered (A) no earlier than the close of business on the one hundred twentieth (120th) day prior to currently proposed annual meeting and (B) no later than the close of business on the later of the ninetieth (90th) day prior to such annual meeting or the close of business on the tenth (10th) day following the day on which public announcement of the date of such meeting is first made by the Corporation. In no event shall the public announcement of an adjournment or postponement of an annual meeting commence a new time period (or extend any time period) for the giving of a stockholder’s notice as described above. Such stockholder’s notice shall set forth:

(x) as to each person whom the stockholder proposes to nominate for election or reelection as a director all information relating to such person that would be required to be disclosed in solicitations of proxies for election of directors, or would be otherwise required, in each case pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), including such person’s written consent to being named in the proxy statement as a nominee and to serving as a director if elected;

(y) as to any other business that the stockholder proposes to bring before the meeting, the text of the proposal or business (including the text of any resolutions proposed for consideration and in the event that such business includes a proposal to amend these Bylaws, the language of the proposed amendment), the reasons for conducting such business at the meeting and any material interest in such business of such stockholder and the beneficial owner, if any, on whose behalf the proposal is made;

(z) as to the stockholder giving the notice and the beneficial owner, if any, on whose behalf the nomination or proposal is made, (aa) the name and address of such stockholder, as they appear on the Corporation’s books, and of such beneficial owner, (bb) the class and number of shares of the Corporation that are owned beneficially and held of record by such stockholder and such beneficial owner, (cc) whether either such stockholder or beneficial owner intends to deliver a proxy statement and form of proxy to holders of, in the case of a proposal, at least the percentage of the Corporation’s voting shares required under applicable law to carry the proposal or, in the case of a nomination or nominations, a sufficient number of holders of the Corporation’s voting shares to elect such nominee or nominees (an affirmative statement of such intent being a “Solicitation Notice”), (dd) a description of any agreement, arrangement or understanding with respect to the nomination or proposal between or among such stockholder and/or such beneficial owner, any of their respective affiliates or associates, and any others acting in concert with any of the foregoing, including, in the case of a nomination, the nominee, (ee) a description of any agreement, arrangement or understanding (including any derivative or short

positions, profit interests, options, warrants, convertible securities, stock appreciation or similar rights, hedging transactions, and borrowed or loaned shares) that has been entered into as of the date of the stockholder’s notice by, or on behalf of, such stockholder and such beneficial owners, whether or not such instrument or right shall be subject to settlement in underlying shares of capital stock of the Corporation, the effect or intent of which is to mitigate loss to, manage risk or benefit of share price changes for, or increase or decrease the voting power of, such stockholder or such beneficial owner, with respect to securities of the Corporation, (ff) a representation that the stockholder is a holder of record of stock of the Corporation entitled to vote at such meeting and intends to appear in person or by proxy at the meeting to propose such business or nomination, and (gg) any other information relating to such stockholder and beneficial owner, if any, required to be disclosed in a proxy statement or other filings required to be made in connection with solicitations of proxies for, as applicable, the proposal and/or for the election of directors in an election contest pursuant to and in accordance with Section 14(a) of the Exchange Act and the rules and regulations promulgated thereunder. The foregoing notice requirements of this Section 2.13.1 shall be deemed satisfied by a stockholder with respect to business other than a nomination if the stockholder has notified the Corporation of his, her or its intention to present a proposal at an annual meeting in compliance with applicable rules and regulations promulgated under the Exchange Act and such stockholder’s proposal has been included in a proxy statement that has been prepared by the Corporation to solicit proxies for such annual meeting. The Corporation may require any proposed nominee to furnish such other information as the Corporation may reasonably require to determine the eligibility of such proposed nominee to serve as a director of the Corporation.

(c) Notwithstanding anything in the second sentence of Section 2.13.1(b) to the contrary, in the event that the number of directors to be elected to the Board is increased and there is no Public Announcement, as defined below, by the Corporation naming all of the nominees for director or specifying the size of the increased Board at least one hundred (100) days prior to the first anniversary of the preceding year’s annual meeting, a stockholder’s notice required by this Section 2.13 shall also be considered timely, but only with respect to nominees for any new positions created by such increase, if it shall be delivered to the Secretary of the Corporation at the principal executive office of the Corporation no later than the close of business on the tenth (10th) day following the day on which such Public Announcement is first made by the Corporation.

2.13.2 Special Meetings of Stockholders. Only such business shall be conducted at a special meeting of stockholders as shall have been brought before the meeting pursuant to the Corporation’s notice of such meeting. Nominations of persons for election to the Board may be made at a special meeting of stockholders at which directors are to be elected pursuant to the Corporation’s notice of such meeting (a) by or at the direction of the Board or any committee thereof or (b) provided that the Board has determined that directors shall be elected at such meeting, by any stockholder of the Corporation who is a stockholder of record at the time of giving of notice of the special meeting, who shall be entitled to vote at the meeting and who complies with the notice procedures set forth in this Section 2.13. In the event the Corporation calls a special meeting of stockholders for the purpose of electing one or more directors to the Board, any such stockholder entitled to vote in such election of directors may nominate a person or persons (as the case may be), for election to such position(s) as specified in the Corporation’s notice of meeting, only if the stockholder’s notice containing the information specified in subsections (x) and (z) of

Section 2.13.1(b) shall be delivered to the Secretary of the Corporation at the principal executive offices of the Corporation (i) no earlier than the one hundred twentieth (120th) day prior to such special meeting and (ii) no later than the close of business on the later of the ninetieth (90th) day prior to such special meeting or the tenth (10th) day following the day on which Public Announcement is first made of the date of the special meeting and of the nominees proposed by the Board to be elected at such meeting; provided, however, that any stockholder nominating a person or persons (as the case may be) for election as director(s) at a special meeting at which the Board has determined that directors will be elected shall also comply with Section 2.13.1(b)(iii) and 2.13.1(b)(iv) of these Bylaws, and nominations made by any stockholder who fails to comply with such provisions shall be void. In no event shall the Public Announcement of an adjournment or postponement of a special meeting commence a new time period (or extend any time period) for the giving of a stockholder’s notice as described above.

2.13.3 General.

(a) Only such persons who are nominated in accordance with the procedures set forth in this Section 2.13 shall be eligible to serve as directors and only such business shall be conducted at a meeting of stockholders as shall have been brought before the meeting in accordance with the procedures set forth in this Section 2.13. Except as otherwise provided by law or these Bylaws, the chairperson of the meeting shall have the power and duty to determine whether a nomination or any business proposed to be brought before the meeting was made or proposed, as the case may be, in accordance with the procedures set forth in this Section 2.13 and, if any proposed nomination or business is not in compliance herewith, to declare that such defective proposal or nomination shall be disregarded. Notwithstanding the foregoing provisions of this Section 2.13, unless otherwise required by law, if the stockholder (or a qualified representative of the stockholder) does not appear at the annual or special meeting of stockholders of the Corporation to present a nomination or proposed business, such nomination shall be disregarded and such proposed business shall not be transacted, notwithstanding that proxies in respect of such vote may have been received by the Corporation. For purposes of this Section 2.13, to be considered a qualified representative of the stockholder, a person must be a duly authorized officer, manager or partner of such stockholder or must be authorized by a writing executed by such stockholder or an electronic transmission delivered by such stockholder to act for such stockholder as proxy at the meeting of stockholders and such person must produce such writing or electronic transmission, or a reliable reproduction of the writing or electronic transmission, at the meeting of stockholders.

(b) For purposes of this Section 2.13, the term “Public Announcement” shall mean disclosure in a press release reported by the Dow Jones News Service, Associated Press or comparable national news service or in a document publicly filed by the Corporation with the Securities and Exchange Commission pursuant to section 13, 14 or 15(d) of the Exchange Act.

(c) Notwithstanding the foregoing provisions of this Section 2.13, a stockholder shall also comply with all applicable requirements of the Exchange Act and the rules and regulations promulgated thereunder with respect to the matters set forth in this Section 2.13; provided, however, that any references in these Bylaws to the Exchange Act or the rules and regulations promulgated thereunder are not intended to and shall not limit any requirements applicable to nominations or proposals as to any other business to be considered pursuant to this

Section 2.13. Nothing in this Section 2.13 shall be deemed to affect any rights (a) of stockholders to request inclusion of proposals or nominations in the Corporation’s proxy statement pursuant to applicable rules and regulations promulgated under the Exchange Act or (b) of the holders of any series of Preferred Stock to elect directors pursuant to any applicable provisions of the Certificate of Incorporation.

Article III – BOARD OF DIRECTORS

Section 3.1 Number; Qualifications. The Board shall consist of one or more members. Within such limit, the number of directors shall be determined from time to time solely by resolution of the Board. No decrease in the authorized number of directors constituting the Board shall shorten the term of any incumbent director. Directors need not be stockholders of the Corporation.

Section 3.2 Election; Resignation; Removal. The directors shall be divided, with respect to the time for which they severally hold office, into classes as provided in the Certificate of Incorporation. All directors shall hold office until the expiration of the term for which elected and until their respective successors are elected, except in the case of the death, resignation or removal of any director. Any director may resign at any time upon written notice to the Corporation. Directors may be removed as provided in the Certificate of Incorporation.

Section 3.3 Vacancies and Newly Created Directorships. Subject to the rights of the holders of any series of Preferred Stock, any vacancy occurring in the Board for any cause, and any newly created directorship resulting from any increase in the authorized number of directors, shall, unless (a) the Board determines by resolution that any such vacancies or newly created directorships shall be filled by the stockholders or (b) as otherwise provided by law, be filled only by the affirmative vote of a majority of the directors then in office, although less than a quorum, or by a sole remaining director, and not by the stockholders. Any director elected in accordance with the preceding sentence shall hold office for a term expiring at the annual meeting of stockholders at which the term of office of the class to which the director has been assigned expires or until such director’s successor shall have been duly elected and qualified.

Section 3.4 Regular Meetings. Regular meetings of the Board may be held at such places, within or without the State of Delaware, and at such times as the Board may from time to time determine. Notice of regular meetings need not be given if the date, times and places thereof are fixed by resolution of the Board.

Section 3.5 Special Meetings. Special meetings of the Board may be called by the chairperson of the Board, or in such person’s absence by the Chief Executive Officer or the President (if a director), or a majority of the members of the Board then in office and may be held at any time, date or place, within or without the State of Delaware, as the person or persons calling the meeting shall fix. Notice of the time, date and place of such meeting shall be given, orally, in writing or by electronic transmission (including electronic mail), by the person or persons calling the meeting to all directors at least four (4) days before the meeting if the notice is mailed, or at least twenty-four (24) hours before the meeting if such notice is given by telephone, hand delivery, telegram, telex, mailgram, facsimile, electronic mail or other means of electronic transmission. Unless otherwise indicated in the notice, the business permitted to be conducted at a special

meeting of stockholders shall be limited to matters properly brought before the meeting by or at the direction of the Board.

Section 3.6 Remote Meetings Permitted. Members of the Board, or any committee of the Board, may participate in a meeting of the Board or such committee by means of conference telephone or other communications equipment by means of which all persons participating in the meeting can hear each other, and participation in a meeting pursuant to conference telephone or other communications equipment shall constitute presence in person at such meeting.

Section 3.7 Quorum; Vote Required for Action. At all meetings of the Board and each committee thereof, a majority of the total number of the whole Board or such committee shall constitute a quorum for the transaction of business. If a quorum shall fail to attend any meeting, a majority of those present may adjourn the meeting to another place, date or time without further notice, other than an announcement at the meeting, until a quorum is present. Except as otherwise provided herein or in the Certificate of Incorporation, or required by law, the vote of a majority of the directors present at a meeting at which a quorum is present shall be the act of the Board.

Section 3.8 Organization. Meetings of the Board shall be presided over by the chairperson of the Board, or in such person’s absence by the Chief Executive Officer or the President (if a director), or in such person’s absence by a chairperson chosen at the meeting. The Secretary shall act as secretary of the meeting, but in such person’s absence the chairperson of the meeting may appoint any person to act as secretary of the meeting.

Section 3.9 Written Action by Directors. Any action required or permitted to be taken at any meeting of the Board, or of any committee thereof, may be taken without a meeting if all members of the Board or such committee, as the case may be, consent thereto in writing or by electronic transmission, and the writing or writings or electronic transmission or transmissions are filed with the minutes of proceedings of the Board or committee, respectively, in the minute books of the Corporation. Such filing shall be in paper form if the minutes are maintained in paper form and shall be in electronic form if the minutes are maintained in electronic form.

Section 3.10 Powers. The Board may, except as otherwise required by law or the Certificate of Incorporation, exercise all such powers and manage and direct all such acts and things as may be exercised or done by the Corporation.

Section 3.11 Compensation of Directors. Members of the Board, as such, may receive, pursuant to a resolution of the Board, fees and other compensation for their services as directors, including without limitation their services as members of committees of the Board.

Article IV – COMMITTEES

Section 4.1 Committees. The Board may designate one or more committees, each committee to consist of one or more of the directors of the Corporation. The Board may designate one or more directors as alternate members of any committee, who may replace any absent or disqualified member at any meeting of the committee. In the absence or disqualification of a member of the committee, the member or members thereof present at any meeting of such committee who are not disqualified from voting, whether or not such member or members constitute a quorum, may unanimously appoint another member of the Board to act at the meeting

in place of any such absent or disqualified member. Any such committee, to the extent provided in a resolution of the Board, shall have and may exercise all the powers and authority of the Board in the management of the business and affairs of the Corporation and may authorize the seal of the Corporation to be affixed to all papers that may require it, but no such committee shall have the power or authority in reference to the following matters: (a) approving, adopting, or recommending to the stockholders any action or matter (other than the election or removal of members of the Board) expressly required by the Delaware General Corporation Law (the “DGCL”) to be submitted to stockholders for approval; or (b) adopting, amending or repealing any of these Bylaws.

Section 4.2 Committee Rules. Unless the Board otherwise provides, each committee designated by the Board may make, alter and repeal rules for the conduct of its business. In the absence of such rules each committee shall conduct its business in the same manner as the Board conducts its business pursuant to Article III of these Bylaws.

Article V – OFFICERS

Section 5.1 Generally. The officers of the Corporation shall consist of a Chief Executive Officer (who may be the chairperson of the Board or the President, unless the Board shall designate another officer to be the Chief Executive Officer), a President and a Secretary, and may consist of such other officers, including a Chief Financial Officer, a Chief Medical Officer and one or more Vice Presidents, as may from time to time be appointed by the Board. Except as otherwise expressly delegated by resolution of the Board, the Board shall have the exclusive power and authority to appoint and remove officers of the Corporation. Each officer shall hold office until such person’s successor is appointed or until such person’s earlier resignation, death or removal. Any number of offices may be held by the same person. Any officer may resign at any time upon written notice to the Corporation. Any vacancy occurring in any office of the Corporation by death, resignation, removal or otherwise may be filled by the Board.

Section 5.2 Chairperson of the Board. The chairperson of the Board shall have the power to preside at all meetings of the Board and shall have such other powers and duties as provided in these Bylaws and as the Board may from time to time prescribe.

Section 5.3 President. Unless otherwise designated by the Board, the President shall be the Chief Executive Officer of the Corporation. The President shall, subject to the direction of the Board, have responsibility for the general management and control of the business and affairs of the Corporation and shall perform all duties and have all powers which are commonly incident to the office of President or which are delegated to him or her by the Board. The President shall, in the absence of or because of the inability to act of the chairperson of the Board, perform all duties of the chairperson of the Board and preside at all meetings of the Board and of stockholders. The President shall perform such other duties and shall have such other powers as the Board may from time to time prescribe. He or she shall have power to sign contracts and other instruments of the Corporation which are authorized and shall have general supervision and direction of all of the other officers, employees and agents of the Corporation, other than the chairperson of the Board.

Section 5.4 Vice President. Each Vice President shall have all such powers and duties as are commonly incident to the office of Vice President, or that are delegated to him or her by the

Board or the Chief Executive Officer. A Vice President may be designated by the Board to perform the duties and exercise the powers of the Chief Executive Officer in the event of the Chief Executive Officer’s absence or disability. A Vice President may be designated by the Board to perform the duties and exercise the powers of the Chief Financial Officer in the event of the Chief Financial Officer’s absence or disability.

Section 5.5 Chief Financial Officer. The Chief Financial Officer shall be the Treasurer of the Corporation unless the Board shall have designated another officer as the Treasurer of the Corporation. Subject to the direction of the Board and the Chief Executive Officer, the Chief Financial Officer shall perform all duties and have all powers that are commonly incident to the office of Chief Financial Officer.

Section 5.6 Treasurer. The Treasurer shall have custody of all moneys and securities of the Corporation. The Treasurer shall make such disbursements of the funds of the Corporation as are authorized and shall render from time to time an account of all such transactions. The Treasurer shall also perform such other duties and have such other powers as are commonly incident to the office of Treasurer, or as the Board or the Chief Executive Officer may from time to time prescribe.

Section 5.7 Secretary. The Secretary shall issue or cause to be issued all authorized notices for, and shall keep, or cause to be kept, minutes of all meetings of the stockholders and the Board. The Secretary shall have charge of the corporate minute books and similar records and shall perform such other duties and have such other powers as are commonly incident to the office of Secretary, or as the Board or the Chief Executive Officer may from time to time prescribe.

Section 5.8 Delegation of Authority. The Board may from time to time, in accordance with applicable law, delegate the powers or duties of any officer to any other officers or agents, notwithstanding any provision hereof.

Section 5.9 Removal. Any officer of the Corporation may be removed at any time, with or without cause, by the Board; provided that if the Board has empowered the Chief Executive Officer to appoint any Vice Presidents of the Corporation, then such Vice Presidents may also be removed by the Chief Executive Officer. Such removal shall be without prejudice to the contractual rights of such officer, if any, with the Corporation.

Article VI – STOCK

Section 6.1 Certificates. The shares of capital stock of the Corporation shall be issued in uncertificated form beginning on December 18, 2025. Notwithstanding the foregoing, shares represented by a certificate issued prior to December 18, 2025 shall remain in certificated form until such certificate is surrendered to the Corporation.

Section 6.2 Lost, Stolen or Destroyed Stock Certificates; Issuance of New Certificates. The Corporation may issue uncertificated shares in the place of any certificate previously issued by it, alleged to have been lost, stolen or destroyed, upon the making of an affidavit of that fact by the person claiming the certificate of stock to be lost, stolen or destroyed, and the Corporation may require the owner of the lost, stolen or destroyed certificate, or such owner’s legal representative, to agree to indemnify the Corporation and/or to give the Corporation

a bond sufficient to indemnify it, against any claim that may be made against it on account of the alleged loss, theft or destruction of any such certificate or the issuance of such uncertificated shares.

Section 6.3 Other Regulations. The issue, transfer, conversion and registration of stock certificates and uncertificated securities shall be governed by such other regulations as the Board may establish.

Article VII – INDEMNIFICATION AND ADVANCEMENT OF EXPENSES

Section 7.1 Indemnification.

(a) Subject to Section 7.3, the Corporation shall indemnify, to the full extent that it shall have power under applicable law to do so and in a manner permitted by such law, any person who is made or threatened to be made a party to or is otherwise involved (as a witness or otherwise) in any threatened, pending, or completed action, suit, or proceeding, whether civil, criminal, administrative, or investigative (hereinafter, a “Proceeding”), by reason of the fact that such person is or was a director or officer of the Corporation, or while serving as a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee, or agent of another corporation, partnership, joint venture, trust, or other enterprise, including service with respect to an employee benefit plan (collectively, “Another Enterprise”), against expenses (including attorneys’ fees), judgments, fines (including ERISA excise taxes or penalties) and amounts paid in settlement actually and reasonably incurred by him or her in connection with such Proceeding if he or she acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful.

(b) The Corporation may indemnify, to the full extent that it shall have power under applicable law to do so and in a manner permitted by such law, any person who is made or threatened to be made a party to or is otherwise involved (as a witness or otherwise) in any threatened, pending, or completed Proceeding, by reason of the fact that such person is or was an employee or agent of the Corporation, or while not serving as a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee, or agent of Another Enterprise, against expenses (including attorneys’ fees), judgments, fines (including ERISA excise taxes or penalties) and amounts paid in settlement actually and reasonably incurred by him or her in connection with such Proceeding if he or she acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful.

(c) To the extent that a present or former director or officer of the Corporation has been successful on the merits or otherwise in defense of any threatened, pending, or completed Proceeding referred to in Section 145(a) or (b) of the DGCL, or in defense of any claim, issue, or matter therein, he or she shall be indemnified against expenses (including attorneys’ fees) actually and reasonably incurred by him or her in connection therewith.

(d) The termination of any Proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendre or its equivalent, shall not, of itself, create a presumption that the person seeking indemnification did not act in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Corporation, and, with respect to any criminal action or proceeding, had reasonable cause to believe that his or her conduct was unlawful.

Section 7.2 Advancement of Expenses.

(a) Subject to Section 7.3, with respect to any person who is made or threatened to be made a party to or is otherwise involved (as a witness or otherwise) in any threatened, pending, or completed Proceeding, by reason of the fact that such person is or was a director or officer of the Corporation or while serving as a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee, or agent of Another Enterprise, the Corporation shall pay the expenses (including attorneys’ fees) incurred by such person in defending any such Proceeding in advance of its final disposition (hereinafter an “Advancement of Expenses”); provided, however, that any Advancement of Expenses shall be made only upon receipt of an undertaking (hereinafter an “Undertaking”) by such person to repay all amounts advanced if it shall ultimately be determined by final judicial decision from which there is no further right to appeal that such person is not entitled to be indemnified for such expenses under this Article VII or otherwise.

(b) With respect to any person who is made or threatened to be made a party to or is otherwise involved (as a witness or otherwise) in any threatened, pending, or completed Proceeding, by reason of the fact that such person is or was an employee or agent of the Corporation, or while not serving as a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee, or agent of Another Enterprise, the Corporation may, in its discretion and upon such terms and conditions, if any, as the Corporation deems appropriate, pay the expenses (including attorneys’ fees) incurred by such person in defending any such Proceeding in advance of its final disposition.

Section 7.3 Actions Initiated Against The Corporation. Anything in Section 7.1(a) or Section 7.2(a) to the contrary notwithstanding, except as provided in Section 7.5(b), with respect to a Proceeding initiated against the Corporation by a person who is or was a director or officer of the Corporation (whether initiated by such person in or by reason of such capacity or in or by reason of any other capacity, including as a director, officer, employee, or agent of Another Enterprise), the Corporation shall not be required to indemnify or to advance expenses (including attorneys’ fees) to such person in connection with prosecuting such Proceeding (or part thereof) or in defending any counterclaim, cross-claim, affirmative defense, or like claim of the Corporation in such Proceeding (or part thereof) unless such Proceeding was authorized by the Board.

Section 7.4 Contract Rights. The rights to indemnification and Advancement of Expenses conferred upon any current or former director or officer of the Corporation pursuant to this Article VII (whether by reason of the fact that such person is or was a director or officer of the Corporation, or while serving as a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee, or agent of Another Enterprise) shall be contract rights, shall vest when such person becomes a director or officer of the Corporation,

and shall continue as vested contract rights even if such person ceases to be a director or officer of the Corporation. Any amendment, repeal, or modification of, or adoption of any provision inconsistent with, this Article VII (or any provision hereof) shall not adversely affect any right to indemnification or Advancement of Expenses granted to any person pursuant hereto with respect to any act or omission of such person occurring prior to the time of such amendment, repeal, modification, or adoption (regardless of whether the Proceeding relating to such acts or omissions, or any proceeding relating to such person’s rights to indemnification or to Advancement of Expenses, is commenced before or after the time of such amendment, repeal, modification, or adoption), and any such amendment, repeal, modification, or adoption that would adversely affect such person’s rights to indemnification or Advancement of Expenses hereunder shall be ineffective as to such person, except with respect to any threatened, pending, or completed Proceeding that relates to or arises from (and only to the extent such Proceeding relates to or arises from) any act or omission of such person occurring after the effective time of such amendment, repeal, modification, or adoption.

Section 7.5 Claims.

(a) If (X) a claim under Section 7.1(a) with respect to any right to indemnification is not paid in full by the Corporation within sixty (60) days after a written demand has been received by the Corporation or (Y) a claim under Section 7.2(a) with respect to any right to the Advancement of Expenses is not paid in full by the Corporation within twenty (20) days after a written demand has been received by the Corporation, then the person seeking to enforce a right to indemnification or to an Advancement of Expenses, as the case may be, may at any time thereafter bring suit against the Corporation to recover the unpaid amount of the claim.

(b) If successful in whole or in part in any suit brought pursuant to Section 7.5(a), or in a suit brought by the Corporation to recover an Advancement of Expenses (whether pursuant to the terms of an Undertaking or otherwise), the person seeking to enforce a right to indemnification or an Advancement of Expenses hereunder or the person from whom the Corporation sought to recover an Advancement of Expenses, as the case may be, shall be entitled to be paid by the Corporation the reasonable expenses (including attorneys’ fees) of prosecuting or defending such suit.

(c) In any suit brought by a person seeking to enforce a right to indemnification hereunder (but not a suit brought by a person seeking to enforce a right to an Advancement of Expenses hereunder), it shall be a defense that the person seeking to enforce a right to indemnification has not met any applicable standard for indemnification under applicable law. With respect to any suit brought by a person seeking to enforce a right to indemnification or right to Advancement of Expenses hereunder or any suit brought by the Corporation to recover an Advancement of Expenses (whether pursuant to the terms of an Undertaking or otherwise), neither (i) the failure of the Corporation to have made a determination prior to commencement of such suit that indemnification of such person is proper in the circumstances because such person has met the applicable standards of conduct under applicable law, nor (ii) an actual determination by the Corporation that such person has not met such applicable standards of conduct, shall create a presumption that such person has not met the applicable standards of conduct or, in a case brought by such person seeking to enforce a right to indemnification, be a defense to such suit.

(d) In any suit brought by a person seeking to enforce a right to indemnification or to an Advancement of Expenses hereunder, or by the Corporation to recover an Advancement of Expenses (whether pursuant to the terms of an Undertaking or otherwise), the burden shall be on the Corporation to prove that the person seeking to enforce a right to indemnification or to an Advancement of Expenses or the person from whom the Corporation seeks to recover an Advancement of Expenses is not entitled to be indemnified, or to such an Advancement of Expenses, under this Article VII or otherwise.

Section 7.6 Determination of Entitlement to Indemnification. Any indemnification required or permitted under this Article VII (unless ordered by a court) shall be made by the Corporation only as authorized in the specific case upon a determination that indemnification of the present or former director, officer, employee or agent is proper in the circumstances because he or she has met all applicable standards of conduct set forth in this Article VII and Section 145 of the DGCL. Such determination shall be made, with respect to a person who is a director or officer of the Corporation at the time of such determination, (a) by a majority vote of the directors who are not parties to such Proceeding, even though less than a quorum; (b) by a committee of such directors designated by majority vote of such directors, even though less than a quorum; (c) if there are no such directors, or if such directors so direct, by independent legal counsel in a written opinion; or (d) by the stockholders. Such determination shall be made, with respect to any person who is not a director or officer of the Corporation at the time of such determination, in the manner determined by the Board (including in such manner as may be set forth in any general or specific action of the Board applicable to indemnification claims by such person) or in the manner set forth in any agreement to which such person and the Corporation are parties.

Section 7.7 Non-Exclusive Rights. The indemnification and Advancement of Expenses provided in this Article VII shall not be deemed exclusive of any other rights to which any person may be entitled under any bylaw, agreement, vote of stockholders or disinterested directors, or otherwise, both as to action in such person’s official capacity and as to action in another capacity while holding such office, and shall continue as to a person who has ceased to be such director, officer, employee, or agent and shall inure to the benefit of the heirs, executors, and administrators of such person.

Section 7.8 Insurance. The Corporation may purchase and maintain insurance on behalf of any person who is or was a director, officer, employee, or agent of the Corporation, or is or was serving at the request of the Corporation as a director, officer, employee, or agent of Another Enterprise against any liability asserted against such person and incurred by such person in any such capacity, or arising out of such person’s status as such, whether or not the Corporation would have the power to indemnify such person against such liability under the provisions of this Article VII or otherwise.

Section 7.9 Severability. If any provision or provisions of this Article VII shall be held to be invalid, illegal, or unenforceable for any reason whatsoever: (a) the validity, legality, and enforceability of the remaining provisions of this Article VII (including, without limitation, each portion of any paragraph or clause containing any such provision held to be invalid, illegal, or unenforceable, that is not itself held to be invalid, illegal, or unenforceable) shall not in any way be affected or impaired thereby; and (b) to the fullest extent possible, the provisions of this Article VII (including, without limitation, each such portion of any paragraph or clause containing any

such provision held to be invalid, illegal, or unenforceable) shall be construed so as to give effect to the intent manifested by the provision held invalid, illegal, or unenforceable.

Section 7.10 Miscellaneous. For purposes of this Article VII: (a) references to serving at the request of the Corporation as a director or officer of Another Enterprise shall include any service as a director or officer of the Corporation that imposes duties on, or involves services by, such director or officer with respect to an employee benefit plan; (b) references to serving at the request of the Corporation as an employee or agent of Another Enterprise shall include any service as an employee or agent of the Corporation that imposes duties on, or involves services by, such employee or agent with respect to an employee benefit plan; (c) a person who acted in good faith and in a manner such person reasonably believed to be in the interest of the participants and beneficiaries of an employee benefit plan shall be deemed to have acted in a manner not opposed to the best interests of the Corporation; and (d) references to a director of Another Enterprise shall include, in the case of any entity that is not managed by a board of directors, such other position, such as manager or trustee or member of the governing body of such entity, that entails responsibility for the management and direction of such entity’s affairs, including, without limitation, general partner of any partnership (general or limited) and manager or managing member of any limited liability company.

Article VIII – NOTICES

Section 8.1 Notice.

8.1.1 Form and Delivery. Except as otherwise specifically required in these Bylaws (including, without limitation, Section 8.1.2 below) or by law, all notices required to be given pursuant to these Bylaws shall be in writing and may, (a) in every instance in connection with any delivery to a member of the Board, be effectively given by hand delivery (including use of a delivery service), by depositing such notice in the mail, postage prepaid, or by sending such notice by prepaid telegram, cablegram, overnight express courier, facsimile, electronic mail or other form of electronic transmission and (b) be effectively delivered to a stockholder when given by hand delivery, by depositing such notice in the U.S. mail, postage prepaid or, if specifically consented to by the stockholder as described in Section 8.1.2 of this Article VIII by sending such notice by telegram, cablegram, facsimile, electronic mail or other form of electronic transmission. Any such notice shall be addressed to the person to whom notice is to be given at such person’s address as it appears on the records of the Corporation. The notice shall be deemed given (a) in the case of hand delivery, when received by the person to whom notice is to be given or by any person accepting such notice on behalf of such person, (b) in the case of delivery by U.S. mail, upon deposit in the mail and (c) in the case of delivery via telegram, cablegram, facsimile, electronic mail or other form of electronic transmission, when dispatched.

8.1.2 Electronic Transmission. Without limiting the manner by which notice otherwise may be given effectively to stockholders, any notice to stockholders given by the Corporation under any provision of the DGCL, the Certificate of Incorporation, or these Bylaws shall be effective if given by a form of electronic transmission consented to by the stockholder to whom the notice is given in accordance with Section 232 of the DGCL. Any such consent shall be revocable by the stockholder by written notice to the Corporation. Any such consent shall be deemed revoked if (a) the Corporation is unable to deliver by electronic transmission two

consecutive notices given by the Corporation in accordance with such consent and (b) such inability becomes known to the Secretary or an Assistant Secretary of the Corporation or to the transfer agent, or other person responsible for the giving of notice; provided, however, the inadvertent failure to treat such inability as a revocation shall not invalidate any meeting or other action. Notice given pursuant to this Section 8.1.2 shall be deemed given: (i) if by facsimile telecommunication, when directed to a number at which the stockholder has consented to receive notice; (ii) if by electronic mail, when directed to an electronic mail address at which the stockholder has consented to receive notice; (iii) if by a posting on an electronic network together with separate notice to the stockholder of such specific posting, upon the later of such posting and the giving of such separate notice; and (iv) if by any other form of electronic transmission, when directed to the stockholder.

8.1.3 Affidavit of Giving Notice. An affidavit of the Secretary or an Assistant Secretary or of the transfer agent or other agent of the Corporation that the notice has been given in writing or by a form of electronic transmission shall, in the absence of fraud, be prima facie evidence of the facts stated therein.

Section 8.2 Waiver of Notice. Whenever notice is required to be given under any provision of the DGCL, the Certificate of Incorporation or these Bylaws, a written waiver of notice, signed by the person entitled to notice, or waiver by electronic transmission by such person, whether before or after the time stated therein, shall be deemed equivalent to notice. Attendance of a person at a meeting shall constitute a waiver of notice of such meeting, except when the person attends a meeting for the express purpose of objecting at the beginning of the meeting to the transaction of any business because the meeting is not lawfully called or convened. Neither the business to be transacted at, nor the purpose of, any regular or special meeting of the stockholders, directors or members of a committee of directors need be specified in any waiver of notice.

Article IX – MISCELLANEOUS

Section 9.1 Fiscal Year. The fiscal year of the Corporation shall be determined by resolution of the Board.

Section 9.2 Seal. The Board may provide for a corporate seal, which may have the name of the Corporation inscribed thereon and shall otherwise be in such form as may be approved from time to time by the Board.

Section 9.3 Form of Records. Any records maintained by the Corporation in the regular course of its business, including its stock ledger, books of account and minute books, may be kept on or by means of, or be in the form of, diskettes, CDs, or any other information storage device or method, provided that the records so kept can be converted into clearly legible paper form within a reasonable time. The Corporation shall so convert any records so kept upon the request of any person entitled to inspect such records pursuant to any provision of the DGCL.

Section 9.4 Reliance upon Books and Records. A member of the Board, or a member of any committee designated by the Board shall, in the performance of such person’s duties, be fully protected in relying in good faith upon records of the Corporation and upon such information, opinions, reports or statements presented to the Corporation by any of the Corporation’s officers

or employees, or committees of the Board, or by any other person as to matters the member reasonably believes are within such other person’s professional or expert competence and who has been selected with reasonable care by or on behalf of the Corporation.

Section 9.5 Certificate of Incorporation Governs. In the event of any conflict between the provisions of the Certificate of Incorporation and these Bylaws, the provisions of the Certificate of Incorporation shall govern.

Section 9.6 Severability. If any provision of these Bylaws shall be held to be invalid, illegal, unenforceable or in conflict with the provisions of the Certificate of Incorporation, then such provision shall nonetheless be enforced to the maximum extent possible consistent with such holding and the remaining provisions of these Bylaws (including without limitation, all portions of any section of these Bylaws containing any such provision held to be invalid, illegal, unenforceable or in conflict with the Certificate of Incorporation, that are not themselves invalid, illegal, unenforceable or in conflict with the Certificate of Incorporation) shall remain in full force and effect.

Article X – AMENDMENT

Section 10.1 By the Board. In furtherance and not in limitation of the powers conferred by the DGCL, the Board is expressly authorized and empowered to adopt, alter, amend, rescind and repeal these Bylaws.

Section 10.2 By the Stockholders. Except as otherwise set forth in these Bylaws, these Bylaws may be altered, amended or repealed or new Bylaws may be adopted by the affirmative vote of the holders of at least a majority in voting power of the shares of the capital stock of the Corporation issued and outstanding and entitled to vote at any annual meeting of stockholders, or at any special meeting of stockholders, provided notice of such alteration, amendment, repeal, rescission or adoption of new Bylaws shall have been stated in the notice of such special meeting.

________________________

CERTIFICATION OF AMENDED AND RESTATED BYLAWS

Syndax Pharmaceuticals, Inc.

a Delaware Corporation

I, Luke J. Albrecht, certify that I am Secretary of Syndax Pharmaceuticals, Inc., a Delaware corporation (the “Corporation”), that I am duly authorized to make and deliver this certification, that the attached Bylaws are a true and complete copy of the Amended and Restated Bylaws of the Corporation in effect as of the date of this certificate.

Dated: December 18, 2025

/s/ Luke J. Albrecht

Luke J. Albrecht, Secretary

Syndax Pharmaceuticals Inc 8-K