SEVENTH AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

PARABILIS MEDICINES, INC.

Parabilis Medicines, Inc., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows:

1. The name of the Corporation is Parabilis Medicines, Inc. The date of the filing of its original Certificate of Incorporation with the Secretary of State of the State of Delaware was July 10, 2015 (the “Original Certificate”). The name under which the Corporation filed the Original Certificate was FOG Pharmaceuticals, Inc.

2. This Amended and Restated Certificate of Incorporation (the “Certificate”) amends, restates and integrates the provisions of the Sixth Amended and Restated Certificate of Incorporation that was filed with the Secretary of State of the State of Delaware on January 6, 2026, as amended by the Amendment to Sixth Amended and Restated Certificate of Incorporation that was filed with the Secretary of State of the State of Delaware on June 3, 2026, and was duly adopted in accordance with the provisions of Sections 228, 242 and 245 of the General Corporation Law of the State of Delaware (the “DGCL”).

3. The text of the Amended and Restated Certificate is hereby amended, restated and integrated in its entirety to provide as follows.

The name of the Corporation is Parabilis Medicines, Inc.

The address of the Corporation’s registered office in the State of Delaware is 251 Little Falls Drive, in the City of Wilmington, County of New Castle, 19808. The name of its registered agent at such address is Corporation Service Company.

The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the DGCL.

The total number of shares of capital stock which the Corporation shall have authority to issue is Eight Hundred Ten Million (810,000,000), of which (i) Eight Hundred Million (800,000,000) shares shall be a class designated as common stock, par value $0.0001 per share (the “Common Stock”), which class of Common Stock shall be subdivided into two series consisting of (a) Six Hundred Million (600,000,000) shares designated as voting Common Stock (the “Voting Common Stock”) and (b) Two Hundred Million (200,000,000) shares designated as non-voting Common Stock (the “Non-Voting Common Stock”) and (ii) Ten Million (10,000,000) shares shall be a class designated as undesignated preferred stock, par value $0.0001 per share (the “Preferred Stock”).

Except as otherwise provided in any certificate of designation of any series of Preferred Stock, the number of authorized shares of the class of Common Stock or Preferred Stock may be increased or decreased (but not below the number of shares of such class then outstanding) by the requisite vote of the holders of the outstanding shares of capital stock of the Corporation entitled to vote thereon irrespective of the provisions of Section 242(b)(2) of the DGCL, and no vote of the holders of any of the Common Stock or the Preferred Stock voting separately as a class shall be required therefor. For the avoidance of doubt, the elimination and reduction of the stockholder voting requirements otherwise applicable under Section 242(b) of the DGCL, as permitted by Section 242(d) of the DGCL, shall apply to any amendments to the Certificate.

Effective upon the filing of this Certificate (the “Filing Effective Time”), (i) each share of common stock, par value $0.0001 per share, of the Corporation issued and outstanding or held in treasury immediately prior to the Filing Effective Time is reclassified as a share of Voting Common Stock and (ii) each share of non-voting common stock, par value $0.0001 per share, of the Corporation issued and outstanding or held in treasury immediately prior to the Filing Effective Time is reclassified as a share of Non-Voting Common Stock.

The powers, preferences and rights of, and the qualifications, limitations and restrictions upon, each class or series of stock shall be determined in accordance with, or as set forth below in, this Article IV.

A. COMMON STOCK

Subject to all the rights, powers and preferences of the Preferred Stock and except as provided by law or in this Certificate (including any certificate of designation of any series of Preferred Stock):

1. the holders of the Voting Common Stock shall have the exclusive right to vote for the election of directors of the Corporation (the “Directors”) and on all other matters requiring stockholder action, each outstanding share of Voting Common Stock entitling the holder thereof to one vote on each matter properly submitted to the stockholders of the Corporation for their vote; provided, however, that, except as otherwise required by law, holders of Voting Common Stock, as such, shall not be entitled to vote on any amendment to this Certificate (including any amendment to a certificate of designation of any series of Preferred Stock) that alters or changes the number of shares, powers, preferences, rights or other terms of one or more outstanding series of Preferred Stock if the holders of such affected series of Preferred Stock are entitled to vote, either separately or together with the holders of one or more other such series, on such amendment pursuant to this Certificate (including any certificate of designation of any series of Preferred Stock) or pursuant to the DGCL; 2. the Non-Voting Common Stock shall be non-voting shares, and the holders thereof shall have no right to vote for the election of Directors or on any other matters requiring stockholder action, except as required by law;

3. shares of Voting Common Stock and Non-Voting Common Stock shall be treated equally, identically and ratably, on a per share basis, with respect to any dividends or other distributions of cash, property or shares of capital stock of the Corporation (each, a “Distribution”), as may be declared and paid or set apart for payment upon the shares of Common Stock out of any assets or funds of the Corporation legally available therefor, when, as and if declared by the Board of Directors of the Corporation (the “Board”) or any authorized committee thereof; in the event that such Distribution is paid in the form of shares of Common Stock (or rights to acquire, or securities convertible or exchangeable for shares of Common Stock), holders of Voting Common Stock shall be entitled to receive only shares of Voting Common Stock (or rights to acquire, or securities convertible into or exchangeable for, such shares, as the case may be) and holders of Non-Voting Common Stock shall be entitled to receive only shares of Non-Voting Common Stock (or rights to acquire, or securities convertible into or exchangeable for, such shares, as the case may be); notwithstanding the foregoing, the Board may treat the holders of Voting Common Stock or Non-Voting Common Stock differently with respect to Distributions (including by only paying a Distribution on one such class or paying a different or disparate Distribution to each such class including with respect to the amount of such Distribution payable per share, the form in which such Distribution is payable, the timing of the payment, or otherwise) if such disparate treatment is approved by (i) a majority of the disinterested directors, as such term is defined in Section 144(e)(4) of the DGCL, then in office, or (ii) any committee of the Board expressly delegated the authority to oversee the treatment of such distributions);

4. upon the voluntary or involuntary liquidation, dissolution or winding up of the Corporation, the assets of the Corporation available for distribution to stockholders shall be distributed pro rata to the holders of the Voting Common Stock and Non-Voting Common Stock, treated equally and identically;

5.

in connection with any merger or consolidation of the Corporation with or into any other entity or any conversion, domestication, transfer or continuance of the Corporation, shares of Voting Common Stock and shares of Non-Voting Common Stock shall be treated equally, identically and ratably, on a per share basis, with respect to any consideration into which such shares are converted or any other consideration paid or otherwise distributed to stockholders of the Corporation in the merger, consolidation, conversion, domestication, transfer or continuance (any such consideration, “Change of Control Consideration”), unless (i) such consideration consists, in whole or in part, of shares of capital stock of, or other equity interests in, the Corporation or any other corporation, partnership, limited liability company or other entity, and the powers, designations, preferences and relative, optional or other special rights and qualifications, limitations and restrictions of such shares of capital stock or other equity interests received in respect of the shares of Voting Common Stock and Non-Voting Common Stock differ solely to the extent that the powers, designations, preferences and relative, optional or other special rights and qualifications, limitations and restrictions of the Voting Common Stock and the Non-Voting Common Stock differ as described in this Article IV, then the powers, designations, preferences and relative, optional or other special rights and qualifications, limitations and restrictions of such shares of capital stock or other equity interests received in respect of the shares of Voting Common Stock and Non-Voting Common Stock may differ to the extent that the powers, designations, preferences and relative, optional or other special rights and qualifications, limitations and restrictions of the Voting Common Stock and the Non-Voting Common Stock differ as provided herein (including, without limitation, with respect to the voting rights and conversion provisions hereof), provided, however, that, if the holders of any series of Common Stock are granted the right to elect to receive one of two or more alternative forms of consideration, the foregoing provisions shall be deemed satisfied if holders of the other series of Common Stock are granted corresponding election rights, or (ii) different treatment of the shares of each such series in connection with such merger, consolidation, conversion, domestication, transfer or continuance is approved by the affirmative vote of the holders of a majority of the outstanding shares of Voting Common Stock; provided further, for the avoidance of doubt, Change of Control Consideration shall not be deemed to include any consideration or other distribution paid to or received by a person who is a holder of Voting Common Stock and/or Non-Voting Common Stock, as applicable, pursuant to (x) any employment, consulting, severance or other compensatory arrangement (including, without limitation, any equity-based or cash compensatory award or payment) whether or not entered into in connection with such merger, consolidation, conversion, domestication, transfer or continuance or (y) a negotiated agreement between a holder of Voting Common Stock and/or Non-Voting Common Stock, as applicable, with any counterparty (or affiliate thereof) to a merger or consolidation wherein such holder is contributing, selling, transferring, exchanging or otherwise disposing of shares of the Corporation’s capital stock to such counterparty (or affiliate thereof) as part of a “rollover” or similar transaction that is approved by (i) a majority of the disinterested directors, as such term is defined in Section 144(e)(4) of the DGCL, then in office, or (ii) any committee of the Board expressly delegated the authority to negotiate (or oversee the negotiation of) and to reject such merger or consolidation, and that is in connection with such merger or consolidation or any such conversion, domestication, transfer or continuance; and

6. shares of Voting Common Stock or Non-Voting Common Stock may not be subdivided, combined or reclassified unless the shares of such other series are concurrently therewith proportionately subdivided, combined or reclassified in a manner that maintains the same proportionate equity ownership among the holders of the outstanding Voting Common Stock and Non-Voting Common Stock on the record date for such subdivision, combination or reclassification; provided, however, that shares of one such series may be treated differently if such treatment is approved by the affirmative vote of the holders of a majority of the outstanding shares of Voting Common Stock.

B. CONVERSION OF NON-VOTING COMMON STOCK

1. Each holder of shares of Non-Voting Common Stock shall have the right to convert each share of Non-Voting Common Stock held by such holder into one share of Voting Common Stock at such holder’s election, which shall be made upon written notice to the Corporation delivered, provided that, the shares of Non-Voting Common Stock may only be converted into shares of Voting Common Stock during such time or times as immediately prior to or as a result of such conversion would not result in the holder(s) thereof beneficially owning (for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder (collectively, the “Exchange Act”)), when aggregated with affiliates with whom such holder is required to aggregate beneficial ownership for purposes of Section 13(d) of the Exchange Act, in excess of the Beneficial Ownership Limitation.

The “Beneficial Ownership Limitation” means initially 4.99% of any class of securities of the Corporation registered under the Exchange Act, which percentage may be increased or decreased by a holder of outstanding shares of Non-Voting Common Stock to such other percentage not in excess of 19.99% at the time of purchase of shares of Non-Voting Common Stock without advance notice to the Corporation or, after the time of purchase, as such holder may designate in writing upon 61 days’ notice to the Corporation, provided, however, that, in each case, such increase or decrease shall only be applicable to such holder.

2. Before any holder of Non-Voting Common Stock shall be entitled to convert any shares of Non-Voting Common Stock into shares of Voting Common Stock pursuant to Subsection 1 of Part B of Article IV, such holder shall surrender the certificate or certificates therefor (if any), duly endorsed, at the principal corporate office of the Corporation or of any transfer agent of the Corporation, and shall provide written notice to the Corporation and any such transfer agent, of such conversion election and shall state therein the number of shares of Non-Voting Common Stock elected to be converted, the name or names (i) in which the certificate or certificates representing the shares of Voting Common Stock into which the shares of Non-Voting Common Stock are so converted are to be issued (if such shares of Voting Common Stock will be certificated) or (ii) in which such shares of Voting Common Stock are to be registered in book-entry form (if such shares of Voting Common Stock are uncertificated). If the shares of Voting Common Stock into which the shares of Non-Voting Common Stock are to be converted are to be issued in a name or names other than the name of the holder of the shares of Non-Voting Common Stock being converted, such notice shall be accompanied by a written instrument or instruments of transfer, in form satisfactory to the Corporation, duly executed by the holder. The Corporation shall, as soon as practicable thereafter, issue and deliver to such holder, or to the nominee or nominees of such holder, (i) a certificate or certificates representing the number of shares of Voting Common Stock to which such holder shall be entitled upon such conversion (if such shares of Voting Common Stock are certificated) or shall register such shares of Voting Common Stock in book-entry form (if such shares of Voting Common Stock are uncertificated) and (ii) if applicable, a certificate or certificates representing the number of shares of Non-Voting Common Stock for the number of shares (including any fractional share) of Non-Voting Common Stock represented by the certificate or certificates delivered to the Corporation for conversion but otherwise not elected to be converted pursuant to the written election (if such shares of Non-Voting Common Stock are certificated), or shall register such shares of Non-Voting Common Stock in book-entry form (if such shares of Non-Voting Common Stock are uncertificated). Such conversion shall be deemed to be effective immediately prior to the close of business (i) with respect to certificated shares, on the date of such surrender of the certificate or certificates representing the shares of Non-Voting Common Stock to be converted or (ii) with respect to shares that are uncertificated, immediately prior to the close of business on the date that the holder delivers notice of such conversion election as required by this Subsection 2(a) of Part B of Article IV to the Corporation and the Corporation’s transfer agent, and, in each case, the shares of Voting Common Stock issuable upon such conversion shall be deemed to be outstanding as of such time, and the person or persons entitled to receive the shares of Voting Common Stock issuable upon such conversion shall be deemed to be the record holder or holders of such shares of Voting Common Stock as of such time.

Notwithstanding anything herein to the contrary, shares of Non-Voting Common Stock represented by a lost, stolen or destroyed stock certificate may be converted pursuant to Subsection 1 of Part B of Article IV if the holder thereof notifies the Corporation or its transfer agent that such certificate has been lost, stolen or destroyed and provides an affidavit of that fact acceptable to the Corporation and executes an agreement acceptable to the Corporation to indemnify the Corporation from any loss incurred by it in connection with such certificate.

3. The one-to-one conversion ratio for the conversion of the Non-Voting Common Stock into Voting Common Stock shall in all events be equitably adjusted in the event of any reclassification of the Voting Common Stock or Non-Voting Common Stock (including any split or combination thereof), any Distribution on the Voting Common Stock or Non-Voting Common Stock, or in the event of any merger or consolidation of the Corporation, any recapitalization or reorganization of the Corporation, or any other similar event.

4. The Corporation shall at all times reserve and keep available out of its authorized but unissued shares of Voting Common Stock, solely for the purpose of effecting the conversion of the shares of Non-Voting Common Stock, such number of its shares of Voting Common Stock as shall from time to time be sufficient to effect the conversion of all outstanding shares of Non-Voting Common Stock.

5. If any shares of Non-Voting Common Stock shall be converted pursuant to this Article IV.B., the shares so converted shall be retired and restored to the status of authorized but unissued shares of Non-Voting Common Stock.

C. PREFERRED STOCK

The Board of Directors or any authorized committee thereof is expressly authorized to provide by resolution or resolutions for, out of the unissued shares of Preferred Stock, the issuance of the shares of Preferred Stock in one or more series of such stock, and by filing a certificate of designation pursuant to applicable law of the State of Delaware, to establish or change from time to time the number of shares of each such series, and to fix the designations, powers, including voting powers, full or limited, or no voting powers, preferences and the relative, participating, optional or other special rights of the shares of each series and any qualifications, limitations and restrictions thereof, all to the fullest extent now or hereafter permitted by the DGCL. The powers, preferences and relative, participating, optional and other special rights of each such series of Preferred Stock, and the qualifications, limitations or restrictions thereof, if any, may differ from those of any and all other series at any time outstanding. Without limiting the generality of the foregoing, the resolution or resolutions providing for the issuance of any series of Preferred Stock may provide that such series shall be superior or rank equally or be junior to any other series of Preferred Stock to the extent permitted by law.

STOCKHOLDER ACTION

1. Action without Meeting. Any action required or permitted to be taken by the stockholders of the Corporation at any annual or special meeting of stockholders of the Corporation must be effected at a duly called annual or special meeting of stockholders and may not be taken or effected by a consent of stockholders in lieu thereof; provided, however, that any action required or permitted to be taken, to the extent expressly permitted by the certificate of designation relating to one or more series of Preferred Stock, by the holders of such series of Preferred Stock, voting separately as a series or separately as a class with one or more other such series, may be taken by consent in lieu of a meeting, without prior notice and without a vote, if a consent or consents, setting forth the action so taken, shall be signed by the holders of outstanding shares of the relevant series of Preferred Stock having not less than the minimum number of votes that would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted and shall be delivered to the Corporation in accordance with applicable law.

2. Special Meetings. Except as otherwise required by statute and subject to the rights, if any, of the holders of shares of any series of Preferred Stock, special meetings of the stockholders of the Corporation may be called only by the Board of Directors and may not be called by any other person or persons. Only those matters set forth in the notice of the special meeting may be considered or acted upon at a special meeting of stockholders of the Corporation.

DIRECTORS

1. General. The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors except as otherwise provided herein or required by law.

2. Number of Directors; Term of Office. Except as otherwise provided for or fixed pursuant to the provisions of Article IV (including any certificate of designation with respect to any series of Preferred Stock) and this Article VI relating to the rights of the holders of any series of Preferred Stock to elect additional Directors, the number of directors of the Corporation (the “Directors”) shall be fixed solely and exclusively by resolution duly adopted from time to time by the Board of Directors. The Directors, other than those who may be elected by the holders of any series of Preferred Stock, shall be classified, with respect to the term for which they severally hold office, into three classes. The term of office of the initial Class I Directors shall expire at the first annual meeting of stockholders following the closing of the Corporation’s sale of a class of its capital stock to the public pursuant to a registration statement on Form S-1 under the Securities Act (the “IPO Time”). The term of office of the initial Class II Directors shall expire at the second annual meeting of stockholders following the IPO Time. The term of office of the initial Class III Directors shall expire at the third annual meeting of stockholders following the IPO Time. The Board of Directors is authorized to assign members of the Board of Directors already in office to such classes at the time the classification of the Board of Directors becomes effective. At each annual meeting of stockholders, 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. Notwithstanding the foregoing, the Directors elected to each class shall hold office until their successors are duly elected and qualified or until their earlier resignation, death, disqualification or removal. No decrease in the number of Directors shall shorten the term of any incumbent Director. There shall be no cumulative voting in the election of Directors. Election of Directors need not be by written ballot unless the Bylaws of the Corporation so provide.

Notwithstanding the foregoing, whenever, pursuant to the provisions of Article IV of this Certificate, the holders of any one or more series of Preferred Stock shall have the right, voting separately as a series or together with holders of other such series, to elect additional Directors, the election, term of office, filling of vacancies and other features of such directorships shall be governed by the terms of this Certificate, including any certificate of designation applicable to such series of Preferred Stock. During any period when the holders of any series of Preferred Stock, voting separately as a series or together with one or more series, have the right to elect additional Directors, then upon commencement and for the duration of the period during which such right continues: (i) the then otherwise total authorized number of Directors shall automatically be increased by such specified number of Directors, and the holders of such Preferred Stock shall be entitled to elect the additional Directors so provided for or fixed pursuant to said provisions, and (ii) each such additional Director shall serve until such Director’s successor shall have been duly elected and qualified, or until such Director’s right to hold such office terminates pursuant to said provisions, whichever occurs earlier, subject to such Director’s earlier death, resignation, retirement, disqualification or removal. Notwithstanding any other provision of this Certificate of Incorporation, except as otherwise provided by the Board in the resolution or resolutions establishing such series, whenever the holders of any series of Preferred Stock having such right to elect additional Directors are divested of such right pursuant to the provisions of such stock, the terms of office of all such additional Directors elected by the holders of such stock, or elected to fill any vacancies resulting from the death, resignation, disqualification or removal of such additional Directors, shall forthwith terminate (in which case each such Director shall thereupon cease to be qualified as, and shall cease to be, a Director) and the total authorized number of Directors shall automatically be reduced accordingly.

3. Vacancies and Newly Created Directorships. Subject to the rights, if any, of the holders of any series of Preferred Stock to elect Directors and to fill vacancies in the Board of Directors and newly created directorships relating thereto, any and all vacancies and newly created directorships in the Board of Directors, however occurring, including, without limitation, by reason of an increase in the size of the Board of Directors, or the death, resignation, disqualification or removal of a Director, shall be filled solely and exclusively by the affirmative vote of a majority of the remaining Directors then in office, even if less than a quorum of the Board of Directors, or by a sole remaining Director, and not by the stockholders. Any Director appointed in accordance with the preceding sentence shall hold office for the remainder of the full term of the class of Directors in which the new directorship was created or the vacancy occurred and until such Director’s successor shall have been duly elected and qualified or until such Director’s earlier resignation, disqualification, death or removal. Subject to the rights, if any, of the holders of any series of Preferred Stock to elect Directors, when the number of Directors is increased or decreased, the Board of Directors shall, subject to Article VI.3 hereof, determine the class or classes to which the increased or decreased number of Directors shall be apportioned. In the event of a vacancy in the Board of Directors, the remaining Directors, except as otherwise provided by law, shall exercise the powers of the full Board of Directors until the vacancy is filled.

4. Removal. Subject to the rights, if any, of any series of Preferred Stock to elect Directors and to remove any Director whom the holders of any such series have the right to elect, any Director may be removed from office (i) only for cause and (ii) only by the affirmative vote of the holders of not less than two-thirds (2/3) of the voting power of the outstanding shares of capital stock entitled to vote thereon.

LIMITATION OF LIABILITY

To the fullest extent permitted by the DGCL, as the same exists or may hereafter be amended from time to time, a Director or officer of the Corporation shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of such Director’s fiduciary duty as a Director or officer of the Corporation, except for liability (a) for any breach of the Director’s or officer’s duty of loyalty to the Corporation and its stockholders, (b) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (c) under Section 174 of the DGCL or (d) for any transaction from which the Director or officer derived an improper personal benefit. If the DGCL is amended after the effective date of this Certificate to authorize corporate action further eliminating or limiting the personal liability of Directors or officers of the Corporation, then the liability of a Director or officer of the Corporation shall be eliminated or limited to the fullest extent permitted by the DGCL, as so amended.

Any amendment, repeal or modification of this Article VII shall not adversely affect any right or protection of any Director or officer of the Corporation existing at the time of such amendment, repeal or modification with respect to any acts or omissions by such Director or officer occurring before such amendment, repeal or modification.

AMENDMENT OF BYLAWS

1. Amendment by Directors. Except as otherwise provided by law, the Board of Directors shall have the power to alter, amend or repeal the Bylaws of the Corporation or to adopt new bylaws.

2. Amendment by Stockholders. Except as otherwise provided therein, the Bylaws of the Corporation may be amended or repealed by the stockholders by the affirmative vote of the holders of at least two-thirds (2/3) of the voting power of the outstanding shares of capital stock entitled to vote on such amendment or repeal, voting together as a single class; provided, however, that if the Board of Directors recommends that stockholders approve such amendment or repeal, such amendment or repeal by the stockholders shall only require the affirmative vote of the holders of a majority of the voting power of the outstanding shares of capital stock entitled to vote on such amendment or repeal, voting together as a single class.

AMENDMENT OF CERTIFICATE OF INCORPORATION

The Corporation reserves the right to amend or repeal this Certificate in the manner now or hereafter prescribed by statute and this Certificate, and all rights conferred upon stockholders herein are granted subject to this reservation. For the avoidance of doubt, the provisions of Sections 242(d)(1) and (d)(2) of the DGCL shall apply to the Corporation.

[End of Text]

THIS AMENDED AND RESTATED CERTIFICATE OF INCORPORATION is executed as of this [____] day of [____], 2026.

AMENDED AND RESTATED

BYLAWS

OF

PARABILIS MEDICINES, INC.

(the “Corporation”)

ARTICLE I

Stockholders

SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an “Annual Meeting”) shall be held at the hour, date and place within or without the United States that is fixed by or in the manner determined by the Board of Directors and stated in the notice of the meeting, which time, date and place may subsequently be changed at any time, before or after the notice for such meeting has been sent to the stockholders, by vote of the Board of Directors. The Board of Directors may, in its sole discretion, determine that a meeting of stockholders shall not be held at any place, but may instead be held solely by means of remote communication as authorized by Section 211(a)(2) of the General Corporation Law of the State of Delaware (the “DGCL”). In the absence of any such designation or determination, stockholders’ meetings shall be held at the Corporation’s principal executive office. If no Annual Meeting has been held for a period of thirteen (13) months after the Corporation’s last Annual Meeting, a special meeting in lieu thereof may be held, and such special meeting shall have, for the purposes of these Bylaws or otherwise, all the force and effect of an Annual Meeting. Any and all references hereafter in these Bylaws to an Annual Meeting or Annual Meetings also shall be deemed to refer to any special meeting(s) in lieu thereof.

SECTION 2. Notice of Stockholder Business and Nominations.

(a) Annual Meetings of Stockholders.

For purposes of this Article I, the term “Proposing Person” shall mean the following persons: (i) the stockholder of record providing the notice of nominations or business proposed to be brought before a stockholders’ meeting and (ii) the beneficial owner(s), if different, on whose behalf the nominations or business proposed to be brought before a stockholders’ meeting is made.

For purposes of this Section 2, each of the terms “Affiliates” and “Associates” shall have the meaning attributed to such term in Rule 12b-2 under the Exchange Act. For purposes of this Section 2, the term “Synthetic Equity Interest” shall mean any transaction, agreement or arrangement (or series of transactions, agreements or arrangements), including, without limitation, any derivative, swap, hedge, repurchase or so-called “stock borrowing” or securities lending agreement or arrangement, the purpose or effect of which is to, directly or indirectly: (a) give a person or entity economic benefit and/or risk similar to ownership of shares of any class or series of capital stock of the Corporation, in whole or in part, including due to the fact that such transaction, agreement or arrangement provides, directly or indirectly, the opportunity to profit, or share in any profit, or avoid a loss from any increase or decrease in the value of any shares of any class or series of capital stock of the Corporation, (b) mitigate loss to, reduce the economic risk of, or manage the risk of share price changes for, any person or entity with respect to any shares of any class or series of capital stock of the Corporation, or (c) increase or decrease the voting power of any person or entity with respect to any shares of any class or series of capital stock of the Corporation.

SECTION 3. Special Meetings. Except as otherwise required by statute and subject to the rights, if any, of the holders of any series of Preferred Stock, special meetings of the stockholders of the Corporation may be called only by or at the direction of the Board of Directors. The Board of Directors may postpone or reschedule any previously scheduled special meeting of stockholders. Only those matters set forth in the notice of the special meeting may be considered or acted upon at a special meeting of stockholders of the Corporation. Nominations of persons for election to the Board of Directors and stockholder proposals of other business shall not be brought before a special meeting of stockholders to be considered by the stockholders unless such special meeting is held in lieu of an annual meeting of stockholders in accordance with Article I, Section 1 of these Bylaws, in which case such special meeting in lieu thereof shall be deemed an Annual Meeting for purposes of these Bylaws and the provisions of Article I, Section 2 of these Bylaws shall govern such special meeting.

SECTION 4. Notice of Meetings; Adjournments.

SECTION 5. Quorum. Except as otherwise provided by law, the certificate of incorporation or these Bylaws, at each meeting of stockholders, the presence in person or by remote communication, if applicable, or represented by proxy, of the holders of a majority in voting power of the outstanding shares of stock entitled to vote at the meeting shall be necessary and sufficient to constitute a quorum. If less than a quorum is present at a meeting, the chair of the meeting or the holders of voting stock, by the affirmative vote of a majority of the voting power present in person or by proxy and entitled to vote thereon, may adjourn the meeting from time to time, and the meeting may be held as adjourned without further notice, except as otherwise provided in Section 4 of this Article I. At such adjourned meeting at which a quorum is present, any business may be transacted which might have been transacted at the meeting as originally noticed. The stockholders present at a duly constituted meeting may continue to transact business until adjournment, notwithstanding the withdrawal of enough stockholders to leave less than a quorum.

SECTION 6. Voting and Proxies.

SECTION 7. Action at Meeting. When a quorum is present at any meeting of stockholders, any matter before any such meeting (other than an election of a director or directors) shall be decided by a majority of the votes properly cast for and against such matter, except where a larger vote is required by law, by the Certificate or by these Bylaws. Any election of directors by stockholders shall be determined by a plurality of the votes properly cast on the election of directors.

SECTION 8. Stockholder Lists. The Corporation shall prepare, no later than the tenth (10th) day before each Annual Meeting or special meeting of stockholders, a complete list of the stockholders entitled to vote at the meeting, arranged in alphabetical order, and showing the address of each stockholder and the number of shares registered in the name of each stockholder; provided, however, that if the record date for determining the stockholders entitled to vote is less than ten (10) days before the meeting date, the list shall reflect the stockholders entitled to vote as of the tenth (10th) day before the meeting date. Such list shall be open to the examination of any stockholder for any purpose germane to the meeting for a period of ten (10) days ending on the day before the meeting date in the manner provided by law.

SECTION 9. Conduct of Meeting. The Board of Directors may adopt by resolution such rules, regulations and procedures for the conduct of any meeting of stockholders as it shall deem appropriate. Except to the extent inconsistent with rules, regulations and procedures adopted by the Board of Directors, the chair of the meeting shall have the right to prescribe such rules, regulations and procedures and to do all such acts, as, in the judgment of such chair, are necessary, appropriate or convenient for the proper conduct of the meeting.

Such rules, regulations or procedures, whether adopted by the Board of Directors or the chair of the meeting, may include, without limitation, the following: (a) the establishment of an agenda for the meeting; (b) rules and procedures for maintaining order at the meeting and the safety of those present at the meeting; (c) limitations on attendance at or participation in the meeting to stockholders of record of the Corporation, their duly authorized and constituted proxies, or such other persons as the chair of the meeting shall determine; (d) restrictions on entry to the meeting after the time fixed for the commencement thereof; (e) the determination of the circumstances in which any person may make a statement or ask questions and limitations on the time allotted to questions or comments; (f) the determination of when the polls shall open and close for any given matter to be voted on at the meeting; (g) the exclusion or removal of any stockholders or any other individual who refuses to comply with meeting rules, regulations, or procedures; (h) restrictions on the use of audio and video recording devices, cell phones and other electronic devices; (i) rules, regulations and procedures for compliance with any federal, state or local laws or regulations (including those concerning safety, health or security); (j) procedures (if any) requiring attendees to provide the Corporation advance notice of their intent to attend the meeting; and (k) rules, regulations or procedures regarding the participation by means of remote communication of stockholders and proxy holders not physically present at a meeting, whether such meeting is to be held at a designated place or solely by means of remote communication. The chair of the meeting shall be: (i) such person as the Board of Directors shall have designated to preside over all meetings of the stockholders; (ii) if the Board of Directors has not so designated such a chair of the meeting or if the chair of the meeting is unable to so preside or is absent, then the Chairperson of the Board, if one is elected; (iii) if the Board of Directors has not so designated a chair of the meeting and there is no Chairperson of the Board, or if the chair of the meeting or the Chairperson of the Board is unable to so preside or is absent, then the Chief Executive Officer, if one is elected; or (iv) in the absence or inability to serve of any of the aforementioned persons, the President of the Corporation. Unless and to the extent determined by the Board of Directors or the chair of the meeting, the chair of the meeting shall not be obligated to adopt or follow any technical, formal or parliamentary rules or principles of procedure. In the absence of the Secretary of the Corporation, the secretary of the meeting shall be such person as the chair of the meeting appoints.

SECTION 10. Inspectors of Elections. The Corporation shall, in advance of any meeting of stockholders, appoint one or three inspectors to act at the meeting and make a written report thereof. The Corporation may designate one or more persons as alternate inspectors to replace any inspector who fails to act. If no inspector or alternate is able to act at a meeting of stockholders, the chair of the meeting officer shall appoint one or more inspectors to act at the meeting. Any inspector may, but need not, be an officer, employee or agent of the Corporation. Each inspector, before entering upon the discharge of his or her duties, shall take and sign an oath faithfully to execute the duties of inspector with strict impartiality and according to the best of his or her ability. The inspectors shall perform such duties as are required by the DGCL, including the counting of all votes and ballots. The inspectors may appoint or retain other persons or entities to assist the inspectors in the performance of the duties of the inspectors. The chair of the meeting may review all determinations made by the inspectors, and in so doing the chair of the meeting shall be entitled to exercise his or her sole judgment and discretion and he or she shall not be bound by any determinations made by the inspectors. All determinations by the inspectors and, if applicable, the chair of the meeting, shall be subject to further review by any court of competent jurisdiction.

ARTICLE II

Directors

SECTION 1. Powers. The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors, except as otherwise provided by the Certificate or required by law.

SECTION 2. Number and Terms. The number of directors of the Corporation shall be fixed solely and exclusively by resolution duly adopted from time to time by the Board of Directors, provided the Board of Directors shall consist of at least one (1) member. The directors shall hold office in the manner provided in the Certificate.

SECTION 3. Qualification. No director need be a stockholder of the Corporation.

SECTION 4. Vacancies. Vacancies in the Board of Directors shall be filled in the manner provided in the Certificate.

SECTION 5. Removal. Directors may be removed from office only in the manner provided in the Certificate or by applicable law.

SECTION 6. Resignation. A director may resign at any time by electronic transmission or by giving written notice to the Chairperson of the Board, if one is elected, the President or the Secretary. A resignation shall be effective upon receipt, unless the resignation otherwise provides.

SECTION 7. Regular Meetings. Regular meetings of the Board of Directors may be held at such hour, date and place (if any) as the Board of Directors may from time to time determine and publicize by means of reasonable notice given to any director who is not present when such determination is made.

SECTION 8. Special Meetings. Special meetings of the Board of Directors may be called, orally or in writing, by or at the request of a majority of the directors, the Chairperson of the Board, if one is elected, or the President. The person calling any such special meeting of the Board of Directors may fix the hour, date and place (if any) thereof. Notice thereof shall be given to each director as provided in Section 9 of this Article II.

SECTION 9. Notice of Meetings. Notice of the hour, date and place (if any) of all special meetings of the Board of Directors shall be given to each director by the Secretary or an Assistant Secretary, or in case of the death, absence, incapacity or refusal of such persons, by the Chairperson of the Board, if one is elected, the President or such other officer designated by the Chairperson of the Board, if one is elected, or any one of the directors calling the meeting. Notice of any special meeting of the Board of Directors shall be given to each director in person, by telephone, or by facsimile, electronic mail or other form of electronic communication, sent to his or her business or home address, at least twenty-four (24) hours in advance of the meeting, or by written notice mailed to his or her business or home address, at least forty-eight (48) hours in advance of the meeting provided, however, that if the person or persons calling the meeting determine that it is otherwise necessary or advisable to hold the meeting sooner, then such person or persons may prescribe a shorter time period for notice to be given personally or by telephone, facsimile, electronic mail or other similar means of communication. Such notice shall be deemed to be delivered when hand-delivered to such address; read to such director by telephone; deposited in the mail so addressed, with postage thereon prepaid, if mailed; or dispatched or transmitted if sent by facsimile transmission or by electronic mail or other form of electronic communication. A written waiver of notice signed or electronically transmitted before or after a meeting by a director and filed with the records of the meeting shall be deemed to be equivalent to notice of the meeting.

The attendance of a director at a meeting shall constitute a waiver of notice of such meeting, except where a director attends a meeting for the express purpose of objecting at the beginning of the meeting to the transaction of any business because such meeting is not lawfully called or convened. Except as otherwise required by law, by the Certificate or by these Bylaws, neither the business to be transacted at, nor the purpose of, any meeting of the Board of Directors need be specified in the notice or waiver of notice of such meeting.

SECTION 10. Quorum. At any meeting of the Board of Directors, a majority of the total number of directors shall constitute a quorum for the transaction of business, but if less than a quorum is present at a meeting, a majority of the directors present may adjourn the meeting from time to time, and the meeting may be held as adjourned without further notice. Any business that might have been transacted at the meeting as originally noticed may be transacted at such adjourned meeting at which a quorum is present. For purposes of this Article II, the total number of directors includes any unfilled vacancies on the Board of Directors.

SECTION 11. Action at Meeting. At any meeting of the Board of Directors at which a quorum is present, the affirmative vote of a majority of the directors present shall constitute action by the Board of Directors, unless otherwise required by law, by the Certificate or by these Bylaws.

SECTION 12. Action by Consent. Any action required or permitted to be taken at any meeting of the Board of Directors may be taken without a meeting if all members of the Board of Directors consent thereto in writing or by electronic transmission. After such action is taken, the writing or writings or electronic transmission or transmissions shall be filed with the records of the meetings of the Board of Directors. 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. Such consent shall be treated as a resolution of the Board of Directors for all purposes.

SECTION 13. Manner of Participation. Directors may participate in meetings of the Board of Directors by means of video conference, conference telephone or other communications equipment by means of which all directors participating in the meeting can hear each other, and participation in a meeting in accordance herewith shall constitute presence in person at such meeting for purposes of these Bylaws.

SECTION 14. Presiding Director. The Board of Directors shall designate a representative to preside over all meetings of the Board of Directors, provided that if the Board of Directors does not so designate such a presiding director or such designated presiding director is unable to so preside or is absent, then the Chairperson of the Board, if one is elected, shall preside over all meetings of the Board of Directors. If both the designated presiding director, if one is so designated, and the Chairperson of the Board, if one is elected, are unable to preside or are absent, the Board of Directors shall designate an alternate representative to preside over a meeting of the Board of Directors.

SECTION 15. Committees. The Board of Directors may designate one or more committees, including, without limitation, a Compensation Committee, a Nominating & Corporate Governance Committee and an Audit Committee, and may delegate thereto some or all of its powers to such committee(s) except those which by law, by the Certificate or by these Bylaws may not be delegated.

Except as the Board of Directors may otherwise determine, any such committee may make rules for the conduct of its business, but unless otherwise provided by the Board of Directors or in such rules, its business shall be conducted so far as possible in the same manner as is provided by these Bylaws for the Board of Directors. All members of such committees shall hold such offices at the pleasure of the Board of Directors. The Board of Directors may abolish any such committee at any time. Any committee to which the Board of Directors delegates any of its powers or duties shall keep records of its meetings.

SECTION 16. Compensation of Directors. Directors shall receive such compensation for their services as shall be determined by the Board of Directors, or a designated committee thereof, provided that directors who are serving the Corporation as employees shall not receive any salary or other compensation for their services as directors of the Corporation.

SECTION 17. Emergency By-laws. In the event of any emergency, disaster, catastrophe or other similar emergency condition of a type described in Section 110(a) of the DGCL (an “Emergency”), notwithstanding any different or conflicting provisions in the DGCL, the Certificate or these By-laws, during such Emergency:

ARTICLE III

Officers

SECTION 1. Enumeration. The officers of the Corporation shall consist of a President, a Treasurer, a Secretary and such other officers, including, without limitation, a Chairperson of the Board, a Chief Executive Officer and one or more Vice Presidents (including Executive Vice Presidents or Senior Vice Presidents), Assistant Vice Presidents, Assistant Treasurers and Assistant Secretaries, as the Board of Directors may determine. Any number of offices may be held by the same person. The salaries and other compensation of the officers of the Corporation will be fixed by or in the manner designated by the Board of Directors or a committee thereof to which the Board of Directors has delegated such responsibility.

SECTION 2. Election. The Board of Directors shall elect the President, the Treasurer and the Secretary. Other officers may be elected by the Board of Directors or by such officers delegated such authority by the Board of Directors.

SECTION 3. Qualification. No officer need be a stockholder or a director.

SECTION 4. Tenure. Except as otherwise provided by the Certificate or by these Bylaws, each of the officers of the Corporation shall hold office until his or her successor is elected and qualified or until his or her earlier death, resignation or removal.

SECTION 5. Resignation and Removal. Any officer may resign by delivering his or her written or electronically transmitted resignation to the Corporation addressed to the President or the Secretary, and such resignation shall be effective upon receipt, unless the resignation otherwise provides. Any resignation is without prejudice to the rights, if any, of the Corporation under any contract to which the officer is a party. Except as otherwise provided by law or by resolution of the Board of Directors, the Board of Directors may remove any officer. Except as the Board of Directors may otherwise determine, no officer who resigns or is removed shall have any right to any compensation as an officer for any period following his or her resignation or removal, or any right to damages on account of such removal, whether his or her compensation be by the month or by the year or otherwise, unless such compensation is expressly provided in a duly authorized written agreement with the Corporation.

SECTION 6. Absence or Disability. In the event of the absence or disability of any officer, the Board of Directors may designate another officer to act temporarily in place of such absent or disabled officer.

SECTION 7. Vacancies. Any vacancy in any office may be filled for the unexpired portion of the term by the Board of Directors.

SECTION 8. President. The President shall, subject to the direction of the Board of Directors, have such powers and shall perform such duties as the Board of Directors may from time to time designate.

SECTION 9. Chairperson of the Board. The Chairperson of the Board, if one is elected, shall have such powers and shall perform such duties as the Board of Directors may from time to time designate.

SECTION 10. Chief Executive Officer. The Chief Executive Officer, if one is elected, shall have such powers and shall perform such duties as the Board of Directors may from time to time designate.

SECTION 11. Vice Presidents and Assistant Vice Presidents. Any Vice President (including any Executive Vice President or Senior Vice President) and any Assistant Vice President shall have such powers and shall perform such duties as the Board of Directors or the Chief Executive Officer may from time to time designate.

SECTION 12. Treasurer and Assistant Treasurers. The Treasurer shall, subject to the direction of the Board of Directors and except as the Board of Directors or the Chief Executive Officer may otherwise provide, have general charge of the financial affairs of the Corporation and shall cause to be kept accurate books of account.

The Treasurer shall have custody of all funds, securities and valuable documents of the Corporation. He or she shall have such other duties and powers as may be designated from time to time by the Board of Directors or the Chief Executive Officer. Any Assistant Treasurer shall have such powers and perform such duties as the Board of Directors or the Chief Executive Officer may from time to time designate.

SECTION 13. Secretary and Assistant Secretaries. The Secretary shall record all the proceedings of the meetings of the stockholders and the Board of Directors (including committees of the Board of Directors) in books kept for that purpose. In his or her absence from any such meeting, a temporary secretary chosen at the meeting shall record the proceedings thereof. The Secretary shall have charge of the stock ledger (which may, however, be kept by any transfer or other agent of the Corporation). The Secretary shall have custody of the seal of the Corporation, and the Secretary or an Assistant Secretary shall have authority to affix it to any instrument requiring it, and, when so affixed, the seal may be attested by his or her signature or that of an Assistant Secretary. The Secretary shall have such other duties and powers as may be designated from time to time by the Board of Directors or the Chief Executive Officer. In the absence of the Secretary, any Assistant Secretary may perform his or her duties and responsibilities. Any Assistant Secretary shall have such powers and perform such duties as the Board of Directors or the Chief Executive Officer may from time to time designate.

SECTION 14. Other Powers and Duties. Subject to these Bylaws and to such limitations as the Board of Directors may from time to time prescribe, the officers of the Corporation shall each have such powers and duties as generally pertain to their respective offices, as well as such powers and duties as from time to time may be conferred by the Board of Directors or the Chief Executive Officer.

SECTION 15. Representation of Shares of Other Corporations. The Chairperson of the Board, the President, any Vice President, the Treasurer, the Secretary or Assistant Secretary of this Corporation, or any other person authorized by the Board of Directors or the President or a Vice President, is authorized to vote, represent and exercise on behalf of this Corporation all rights incident to any and all securities of any other entity or entities standing in the name of this Corporation. The authority granted herein may be exercised either by such person directly or by any other person authorized to do so by proxy or power of attorney duly executed by such person having the authority.

SECTION 16. Bonded Officers. The Board of Directors may require any officer to give the Corporation a bond in such sum and with such surety or sureties as shall be satisfactory to the Board of Directors upon such terms and conditions as the Board of Directors may specify, including, without limitation, a bond for the faithful performance of his or her duties and for the restoration to the Corporation of all property in his or her possession or under his or her control belonging to the Corporation.

ARTICLE IV

Capital Stock

SECTION 1. Certificates of Stock. Each stockholder shall be entitled to a certificate of the capital stock of the Corporation in such form as may from time to time be prescribed by the Board of Directors. Such certificate shall be signed by any two authorized officers of the Corporation. The Corporation seal and the signatures by the Corporation’s officers, the transfer agent or the registrar may be facsimiles. In case any officer, transfer agent or registrar who has signed or whose facsimile signature has been placed on such certificate shall have ceased to be such officer, transfer agent or registrar before such certificate is issued, it may be issued by the Corporation with the same effect as if he or she were such officer, transfer agent or registrar at the time of its issue. Every certificate for shares of stock which are subject to any restriction on transfer and every certificate issued when the Corporation is authorized to issue more than one class or series of stock shall contain such legend with respect thereto as is required by law. Notwithstanding anything to the contrary provided in these Bylaws, the Board of Directors may provide by resolution or resolutions that some or all of any or all classes or series of its stock shall be uncertificated shares (except that the foregoing shall not apply to shares represented by a certificate until such certificate is surrendered to the Corporation), and by the approval and adoption of these Bylaws, the Board of Directors has determined that all classes or series of the Corporation’s stock may be uncertificated, whether upon original issuance, re-issuance or subsequent transfer.

SECTION 2. Transfers. Subject to any restrictions on transfer and unless otherwise provided by the Board of Directors, shares of stock that are represented by a certificate may be transferred on the books of the Corporation by the surrender to the Corporation or its transfer agent of the certificate therefor properly endorsed or accompanied by a written assignment or power of attorney properly executed, with transfer stamps (if necessary) affixed, and with such proof of the authenticity of signature as the Corporation or its transfer agent may reasonably require. Shares of stock that are not represented by a certificate may be transferred on the books of the Corporation by submitting to the Corporation or its transfer agent such evidence of transfer and following such other procedures as the Corporation or its transfer agent may require.

SECTION 3. Stock Transfer Agreements. The Corporation shall have power to enter into and perform any agreement with any number of stockholders of any one or more classes of stock of the Corporation to restrict the transfer of shares of stock of the Corporation of any one or more classes owned by such stockholders in any manner not prohibited by the DGCL.

SECTION 4. Record Holders. Except as may otherwise be required by law, by the Certificate or by these Bylaws, the Corporation shall be entitled to treat the record holder of stock as shown on its books as the owner of such stock for all purposes, including the payment of dividends and the right to vote with respect thereto, regardless of any transfer, pledge or other disposition of such stock, until the shares have been transferred on the books of the Corporation in accordance with the requirements of these Bylaws.

SECTION 5. Record Date.

In order that the Corporation may determine the stockholders entitled to notice of or to vote at any meeting of stockholders or any adjournment thereof or 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 of Directors 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 of Directors, and which record date: (a) in the case of determination of stockholders entitled to vote at any meeting of stockholders, shall, unless otherwise required by law, not be more than sixty (60) nor less than ten (10) days before the date of such meeting and (b) in the case of any other action, shall not be more than sixty (60) days prior to such other action. If no record date is fixed: (i) the record date for determining stockholders entitled to notice of or to vote at a meeting of stockholders shall be at 5:00 p.m. Eastern time on the day next preceding the day on which notice is given, or, if notice is waived, at 5:00 p.m. Eastern time on the day next preceding the day on which the meeting is held; and (ii) the record date for determining stockholders for any other purpose shall be 5:00 p.m. Eastern time on the day on which the Board of Directors adopts the resolution relating thereto.

SECTION 6. Replacement of Certificates. In case of the alleged loss, destruction or mutilation of a certificate of stock of the Corporation, a duplicate certificate may be issued in place thereof, upon such terms as the Board of Directors may prescribe.

ARTICLE V

Indemnification

SECTION 1. Definitions. For purposes of this Article V:

SECTION 2. Indemnification of Directors and Officers.

SECTION 3. Indemnification of Non-Officer Employees. Subject to the operation of Section 4 of this Article V, each Non-Officer Employee may, in the discretion of the Board of Directors, be indemnified by the Corporation to the fullest extent authorized by the DGCL, as the same exists or may hereafter be amended, against any or all Expenses and Liabilities that are incurred by such Non-Officer Employee or on such Non-Officer Employee’s behalf in connection with any threatened, pending or completed Proceeding, or any claim, issue or matter therein, which such Non-Officer Employee is, or is threatened to be made, a party to or participant in by reason of such Non-Officer Employee’s Corporate Status, if such Non-Officer Employee acted in good faith and in a manner such Non-Officer Employee reasonably believed to be in or not opposed to the best interests of the Corporation and, with respect to any criminal proceeding, had no reasonable cause to believe his or her conduct was unlawful. The rights of indemnification provided by this Section 3 shall exist as to a Non-Officer Employee after he or she has ceased to be a Non-Officer Employee and shall inure to the benefit of his or her heirs, personal representatives, executors and administrators.

Notwithstanding the foregoing, the Corporation may indemnify any Non-Officer Employee seeking indemnification in connection with a Proceeding initiated by such Non-Officer Employee only if such Proceeding was authorized in advance by the Board of Directors.

SECTION 4. Determination. Unless ordered by a court, no indemnification shall be provided pursuant to this Article V to a Director, to an Officer or to a Non-Officer Employee unless a determination shall have been made that such person acted in good faith and in a manner such person reasonably believed to be in or not opposed to the best interests of the Corporation and, with respect to any criminal Proceeding, such person had no reasonable cause to believe his or her conduct was unlawful. Such determination shall be made by (a) a majority vote of the Disinterested Directors, even though less than a quorum of the Board of Directors, (b) a committee comprised of Disinterested Directors, such committee having been designated by a majority vote of the Disinterested Directors (even though less than a quorum), (c) if there are no such Disinterested Directors, or if a majority of Disinterested Directors so directs, by independent legal counsel in a written opinion or (d) by the stockholders of the Corporation.

SECTION 5. Advancement of Expenses to Directors Prior to Final Disposition.

SECTION 6. Advancement of Expenses to Officers and Non-Officer Employees Prior to Final Disposition.

SECTION 7. Contractual Nature of Rights.

SECTION 8. Non-Exclusivity of Rights. The rights to indemnification and to advancement of Expenses set forth in this Article V shall not be exclusive of any other right that any Director, Officer or Non-Officer Employee may have or hereafter acquire under any statute, provision of the Certificate or these Bylaws, agreement, vote of stockholders or Disinterested Directors or otherwise.

SECTION 9. Insurance. The Corporation may maintain insurance, at its expense, to protect itself and any Director, Officer or Non-Officer Employee against any liability of any character asserted against or incurred by the Corporation or any such Director, Officer or Non-Officer Employee, or arising out of any such person’s Corporate Status, whether or not the Corporation would have the power to indemnify such person against such liability under the DGCL or the provisions of this Article V.

SECTION 10. Other Indemnification. The Corporation’s obligation, if any, to indemnify or provide advancement of Expenses to any person under this Article V as a result of such person serving, at the request of the Corporation, as a director, partner, trustee, officer, employee or agent of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise shall be reduced by any amount such person may collect as indemnification or advancement of Expenses from such other corporation, partnership, joint venture, trust, employee benefit plan or enterprise (the “Primary Indemnitor”). Any indemnification or advancement of Expenses under this Article V owed by the Corporation as a result of a person serving, at the request of the Corporation, as a director, partner, trustee, officer, employee or agent of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise shall only be in excess of, and shall be secondary to, the indemnification or advancement of Expenses available from the applicable Primary Indemnitor(s) and any applicable insurance policies.

SECTION 11. Savings Clause. If this Article V or any portion hereof shall be invalidated on any ground by any court of competent jurisdiction, then the Corporation shall nevertheless indemnify each indemnitee as to any expenses (including, without limitation, attorneys’ fees), liabilities, losses, judgments, fines (including, without limitation, excise taxes and penalties arising under the Employee Retirement Income Security Act of 1974, as amended) and amounts paid in settlement in connection with any action, suit, proceeding or investigation, whether civil, criminal or administrative, including, without limitation, an action by or in the right of the Corporation, to the fullest extent permitted by any applicable portion of this Article V that shall not have been invalidated and to the fullest extent permitted by applicable law.

ARTICLE VI

Miscellaneous Provisions

SECTION 1. Fiscal Year. The fiscal year of the Corporation shall be determined by the Board of Directors.

SECTION 2. Seal. The Board of Directors shall have power to adopt and alter the seal of the Corporation.

SECTION 3. Execution of Instruments. All deeds, leases, transfers, contracts, bonds, notes and other obligations to be entered into by the Corporation in the ordinary course of its business without director action may be executed on behalf of the Corporation by the Chairperson of the Board, if one is elected, the President or the Treasurer or any other officer, employee or agent of the Corporation as the Board of Directors or an executive committee of the Board of Directors may authorize or determine.

SECTION 4. Voting of Securities. Unless the Board of Directors otherwise provides, the Chairperson of the Board, if one is elected, the President or the Treasurer may waive notice of, and act on behalf of the Corporation, or appoint another person or persons to act as proxy or attorney in fact for the Corporation with or without discretionary power and/or power of substitution, at any meeting of stockholders or stockholders of any other corporation or organization, any of whose securities are held by the Corporation.

SECTION 5. Resident Agent. The Board of Directors may appoint a resident agent upon whom legal process may be served in any action or proceeding against the Corporation.

SECTION 6. Corporate Records. The original or attested copies of the Certificate, Bylaws and records of all meetings of the incorporators, stockholders and the Board of Directors and the stock transfer books, which shall contain the names of all stockholders, their record addresses and the amount of stock held by each, may be kept outside the State of Delaware and shall be kept at the principal office of the Corporation, at an office of its counsel, at an office of its transfer agent or in such manner as may be permitted by law.

SECTION 7. Certificate. All references in these Bylaws to the Certificate shall be deemed to refer to the Certificate, as amended and/or restated and in effect from time to time.

SECTION 8. Exclusive Jurisdiction of Delaware Courts or the United States Federal District Courts. Unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for (i) any derivative action or proceeding brought on behalf of the Corporation, (ii) any action asserting a claim of, or a claim based on, a breach of a fiduciary duty owed by any current or former director, officer or other employee or stockholder of the Corporation to the Corporation or the Corporation’s stockholders, (iii) any action asserting a claim arising pursuant to any provision of the DGCL or the Certificate or these Bylaws (including the interpretation, validity or enforceability thereof) or as to which the DGCL confers jurisdiction on the Court of Chancery of the State of Delaware or (iv) any action asserting a claim governed by the internal affairs doctrine; provided, however, that this sentence will not apply to any causes of action arising under the Securities Act of 1933, as amended, or the Exchange Act, or to any claim for which the federal courts have exclusive jurisdiction.

Unless the Corporation consents in writing to the selection of an alternative forum, the federal district courts of the United States of America shall be the sole and exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act of 1933, as amended, the Exchange Act, or the respective rules and regulations promulgated thereunder. To the fullest extent permitted by law, 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 8.

SECTION 9. Amendment of Bylaws.

SECTION 10. Notices. If mailed, notice to stockholders shall be deemed given when deposited in the mail, postage prepaid, directed to the stockholder at such stockholder’s address as it appears on the records of the Corporation. Without limiting the manner by which notice otherwise may be given to stockholders, any notice to stockholders may be given by electronic transmission in the manner provided in Section 232 of the DGCL.

SECTION 11. Waivers. A written waiver of any notice, signed by a stockholder or director, or waiver by electronic transmission by such person, whether given before or after the time of the event for which notice is to be given, shall be deemed equivalent to the notice required to be given to such person. Neither the business to be transacted at, nor the purpose of, any meeting need be specified in such a waiver.

Approved by the Board of Directors on ,2026, approved by the stockholders on , 2026 and effective upon the effectiveness of the Corporation’s Registration Statement on Form S-1 for its initial public offering.

This STOCK PURCHASE AGREEMENT (this “Agreement”) is entered into as of June 9, 2026 (the “Effective Date”), by and between Regeneron Pharmaceuticals, Inc. (the “Investor”), and Parabilis Medicines, Inc., a Delaware corporation (the “Company”).

WHEREAS, the Company is proposing to issue and sell to the Investor (the “Offering”) $75,000,000 of the Company’s common stock, $0.0001 par value per share (the “Common Stock”), contemporaneously with the Company’s initial public offering of Common Stock (“IPO”), pursuant to the terms and subject to the conditions set forth in this Agreement;

WHEREAS, the closing of the Offering shall take place concurrently with the closing of the IPO (the “IPO Closing Time”) and at a price per share equal to ninety percent (90%) of the initial public offering price per share that the Common Stock is sold to the public in the IPO as set forth on the cover of the final prospectus filed with the U.S. Securities and Exchange Commission (the “SEC”) (the “IPO-Based Purchase Price”);

WHEREAS, the Shares are being offered to the Investor pursuant to a private placement exemption from registration under the Securities Act of 1933, as amended (the “Securities Act”); and

WHEREAS, in order to effect the IPO, the Company shall enter into an Underwriting Agreement (the “Underwriting Agreement”) with Leerink Partners LLC, BofA Securities, Inc., Evercore Group L.L.C. and Guggenheim Securities, LLC, as representatives of the several underwriters named therein (acting in such capacity, collectively, the “Underwriters”), substantially in the form attached hereto as Exhibit A.

NOW, THEREFORE, in consideration of the foregoing and the mutual promises and covenants set forth below, the parties hereto hereby agree as follows:

1. Sale of Shares.

(a) Purchase and Sale. Subject to the terms and conditions set forth in this Agreement, the Company hereby agrees to sell to the Investor, and the Investor hereby agrees to purchase from the Company, a number of shares of Common Stock (the “Shares”) determined by dividing $75,000,000 by the IPO-Based Purchase Price (rounded down to the nearest whole share). The total purchase price to be paid by the Investor for the Shares is equal to (i) the number of Shares multiplied by (ii) the IPO-Based Purchase Price (the “Purchase Price”).

(b) Closing. The closing of the purchase and sale of the Shares (the “Closing”) shall take place remotely via the exchange of documents and signatures, after the satisfaction or waiver of each of the conditions set forth in Section 4 (other than those conditions that by their nature are to be satisfied at the Closing, but subject to the fulfillment or waiver of those conditions) concurrently with the IPO Closing Time. At the Closing, (i) the Company shall cause the Company’s transfer agent to deliver the Shares directly to the Investor registered in the name of the Investor, and (ii) the Investor shall deliver the Purchase Price for the Shares directly to the Company as set forth in Section 1(c) below.

(c) Payment of Purchase Price. Payment by the Investor of the Purchase Price to the Company shall be made at the Closing by wire transfer of immediately available funds equal to the Purchase Price to an account specified in writing by the Company at least one business day prior to the Closing.

Payment of the Purchase Price for the Shares shall be made against delivery to the Investor of the Shares, which Shares shall be uncertificated and shall be registered in the name of the Investor on the books of the Company by the Company’s transfer agent.

2. Representations and Warranties.

2.1 Representations and Warranties of the Company. The Company represents and warrants to the Investor as follows as of the date hereof and as of the time of the Closing:

(a) The representations and warranties of the Company set forth in the Underwriting Agreement are true and correct on and as of the date hereof, with the same effect as if made to the Investor herein on the date hereof (except to the extent any such representations and warranties expressly relate to a particular date, in which case such representations and warranties are true and correct, with the same effect as if made to the Investor as of such particular date) (after giving effect to any materiality or other qualifiers contained therein);

(b) The Company has the full right, power, authority and capacity to enter into this Agreement and to consummate the transactions contemplated hereby and thereby and has taken all necessary action to authorize the execution, delivery and performance of this Agreement and the consummation of the transactions contemplated hereby; no Company stockholder approval is required for the Company to enter into this Agreement or to consummate the transactions contemplated hereby, including the issuance and sale of the Shares;

(c) This Agreement constitutes the valid and legally binding obligation of the Company, enforceable in accordance with its terms, subject to bankruptcy, reorganization, insolvency and other similar laws affecting the enforcement of creditors’ rights generally and to general principles of equity. Upon issuance in accordance with, and payment pursuant to, the terms of this Agreement, the Shares will be duly authorized, validly issued and fully-paid and nonassessable, not subject to any preemptive or similar rights and will be issued to the Investor free of liens, encumbrances and restrictions on transfer other than (i) restrictions on transfer under this Agreement and under applicable state and federal securities laws, (ii) restrictions on transfer under the lock-up agreement entered into by the Investor or its affiliates in connection with the IPO and (iii) any liens, encumbrances or restrictions on transfer that are created or imposed by the Investor. Subject in part to the truth and accuracy of the Investor’s representations set forth in Section 2.2 of this Agreement, the offer, sale and issuance of the Shares as contemplated by this Agreement are, and will be, (i) exempt from the registration and prospectus delivery requirements of the Securities Act and (ii) exempt from (or otherwise not subject to) the registration and qualification requirements of applicable securities laws of the states of the United States;

(d) Neither the Company nor any other person or entity authorized by the Company to act on its behalf has engaged in a general solicitation or general advertising (within the meaning of Regulation D of the Securities Act) of investors with respect to offers or sales of Shares pursuant to this Agreement. The Company has not, directly or indirectly, sold, offered for sale, solicited offers to buy or otherwise negotiated in respect of, any security (as defined in the Securities Act) which, to its knowledge, is or will be (i) integrated with the offer and sale of the Shares pursuant to this Agreement for purposes of the Securities Act or (ii) aggregated with prior offerings by the Company for the purposes of the rules and regulations of the applicable securities exchange on which its Common Stock shall be listed. Assuming the accuracy of the representations and warranties of the Investor set forth in Section 2.2, neither the Company nor any of its affiliates, its subsidiaries nor any person acting on their behalf has, directly or indirectly, made any offers or sales of any Company security or solicited any offers to buy any Company security, under circumstances that would adversely affect reliance by the Company on Section 4(a)(2)

and/or Rule 506 of Regulation D promulgated thereunder for the exemption from registration for the transactions contemplated hereby;

(e) The execution and delivery by the Company of, and the performance by the Company of its obligations under this Agreement, the offer, issuance, sale and delivery of the Shares, the consummation of the transactions contemplated hereby and compliance by the Company with its obligations hereunder does not and will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, (i) any indenture, mortgage, deed of trust, loan agreement, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or to which any of the property or assets of the Company or any of its subsidiaries is subject, (ii) the certificate of incorporation or by-laws (or other applicable organizational document) of the Company or any of its subsidiaries, or (iii) any statute or any judgment, order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, except, in the case of clauses (i) and (iii) for such defaults, breaches, or violations that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect (as defined in the Underwriting Agreement); and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issue and sale of the Shares or the consummation by the Company of the transactions contemplated by this Agreement, except such as have been obtained under the Securities Act, approvals, authorizations, orders, registrations or qualifications as may be required under state securities or Blue Sky laws, which have been made or will be made in a timely manner, or have otherwise been duly waived;

(f) No “bad actor” disqualifying event described in Rule 506(d)(1)(i)-(viii) of the Securities Act (a “Disqualification Event”) is applicable to the Company or, to the Company’s knowledge, any Company Covered Person (as defined in the first paragraph of Rule 506(d)(1)), except for a Disqualification Event as to which Rule 506(d)(2)(ii–iv) or (d)(3), is applicable; and

(g) Neither the Company nor, to the best of the Company’s knowledge, any of its Affiliates (which term, as used herein, shall have the meaning set forth in Rule 405 under the Securities Act) or any person or entity acting on its or their behalf has, directly or indirectly, at any time within the past six months, made any offers or sales of any Company security or solicited any offers to buy any security under circumstances that would (i) eliminate the availability of the exemption from registration under Section 4(a)(2) the Securities Act in connection with the offer and sale by the Company of the Shares as contemplated hereby or (ii) cause the offering of the Shares to be integrated with prior offerings by the Company for purposes of any applicable law, regulation or stockholder approval provisions, including, without limitation, under the rules and regulations of any trading market on which any of the securities of the Company are listed or designated.

2.2 Representations and Warranties of the Investor. The Investor represents and warrants to the Company as follows:

(a) (i) It is an institutional “accredited investor” as defined in Rule 501(a) promulgated under the Securities Act; (ii) it has sufficient knowledge and experience in investing in companies similar to the Company so as to be able to evaluate the risks and merits of its investment in the Company and it is able financially to bear the risks thereof; (iii) it has had an opportunity to discuss the Company’s business, management and financial affairs with the Company’s management; (iv) all documents, records, and information pertaining to its investment in the Common Stock and the Company that have been requested by it, if any, have been made available or delivered to it prior to the date hereof; (v) its financial condition is such that it is able to bear the risk of holding the Shares for an indefinite period of time and can bear the loss of the entire investment in such Shares; (vi) it is not purchasing the Shares as the result of any form of general solicitation or general advertising within the meaning of Rule 502(c) under the Securities Act or as a result of the Investor’s review of public filings by the Company; and (vii) it has independently evaluated the merits of its decision to purchase securities of the Company;

(b) The Investor understands that this Agreement is made in reliance upon the Investor’s express representations, which it hereby represents and warrants to the Company, that (i) the Shares being purchased by the Investor are being acquired for the Investor’s own account (and not on behalf of any other person or entity) for the purpose of investment and not with a view to, or for sale in connection with, the distribution thereof, nor with any present intention of distributing or selling the Shares or any portion thereof; (ii) the Investor was not organized for the specific purpose of acquiring the Shares; and (iii) the Shares will not be sold by the Investor without registration under the Securities Act or applicable state securities laws, or an exemption therefrom;

(c) The Investor further understands that the Shares being purchased by the Investor hereunder have not been registered under the Securities Act or any state securities laws and are instead being offered and sold in reliance on an exemption from such registration requirements. The Investor represents and warrants to the Company that, to the Investor’s knowledge, the Investor has not taken any action which could reasonably be expected to cause the sale of the Shares to be sold by the Company to the Investor to fail to qualify as exempt from the registration requirements of the Securities Act. The Investor further understands that until such time as the Shares shall have been registered under the Securities Act and applicable state securities laws or shall have been transferred in accordance with an opinion of counsel reasonably satisfactory to the Company that such registration is not required, stop transfer instructions shall be issued to the Company’s transfer agent and any certificate or certificates representing such securities shall bear a restrictive legend stating that such securities have not been registered under the Securities Act and applicable state securities laws and referring to restrictions on the transferability and sale thereof;

(d) The Investor further understands that its representations and warranties hereunder will not preclude disposition of the Shares without registration thereof, in compliance with Rule 144 promulgated under the Securities Act (“Rule 144”). The Investor understands and acknowledges, however, that there may not be available when the Investor wishes to sell the Shares, or any portion thereof, the adequate current public information with respect to the Company which would permit offers or sales of such securities pursuant to Rule 144, and, therefore, compliance with the Securities Act or some other exemption from the registration and prospectus delivery requirements of the Securities Act may be required for any such offer or sale; and

(e) (i) The Investor is validly existing as a corporation under the laws of New York; (ii) the Investor has all requisite power and authority to execute and deliver this Agreement; and (iii) this Agreement constitutes the valid and legally binding obligation of the Investor, enforceable against the Investor in accordance with its terms, subject to bankruptcy, reorganization, insolvency and other similar laws affecting the enforcement of creditors’ rights generally and to general principles of equity.

3. Conditions to the Closing. The obligations of the Company and the Investor hereunder are subject to the satisfaction of the conditions set forth below on or before the Closing. If for any reason any of the conditions set forth in this Section 4 are not satisfied or waived by each party entitled to the benefit of such conditions at or prior to the Closing, then each party by written notice given to the other parties hereto shall have the right to elect to terminate this Agreement and each party shall be released from their obligations hereunder and shall have no further liability hereunder, provided, however, that nothing contained in this Section 4 shall relieve any party from liabilities or damages arising out of any fraud or willful breach by such party of this Agreement prior to such termination.

a. Conditions to the Investor’s Obligations. The Investor’s obligation to purchase the Shares at the Closing are subject to the satisfaction of the following conditions:

i. the representations and warranties of the Company contained in Section 2.1 herein shall be true and accurate on and as of the Closing with the same force and effect as if they had been made at the Closing (except to the extent any such representations and warranties expressly relate to a particular date, in which case such representations and warranties are true and correct as of such particular date) (after giving effect to any materiality or other qualifiers contained therein);

ii. the Company shall have performed and complied in all material respects with all agreements, obligations and conditions contained in this Agreement that are required to be performed or complied with by it on or before the Closing and shall have obtained all approvals, consents and qualifications necessary to complete the purchase and sale described herein;

iii. no governmental authority or body shall have enacted, issued, promulgated, enforced or entered any decision, injunction, decree, ruling, law or order enjoining, suspending or otherwise prohibiting or making illegal the consummation of the transactions contemplated at the Closing, any stop order suspending the effectiveness of the registration statement filed by the Company with the SEC with respect to the IPO shall be or shall have been in effect, or any proceedings for such purpose or pursuant to Section 8A under the Securities Act shall be or shall have been pending before or threatened by the SEC;

iv. the Company shall have consummated the IPO and the Underwriters shall have purchased, concurrently with the purchase of the Shares by the Investor hereunder, the Initial Securities (as defined in the Underwriting Agreement) at the initial public offering price per share that the Common Stock is sold to the public in the IPO as set forth on the cover of the final prospectus filed with the SEC (less any applicable underwriting discounts or commissions); and

v. the Company shall have filed with Nasdaq a Notification Form: Listing of Additional Shares for the listing of the Shares.

b. Conditions to the Company’s Obligations. The Company’s obligations to sell the Shares at the Closing are subject to the satisfaction of the following conditions:

i. the Investor shall have paid the Purchase Price to the Company by wire transfer of immediately available funds as specified in Section 1(c) of this Agreement;

ii. the representations and warranties of the Investor contained in Section 2.2 shall be true and accurate on and as of the Closing with the same force and effect as if they had been made at the Closing; and

iii. the Underwriters shall have purchased, concurrently with the purchase of the Shares by the Investor hereunder, the Initial Securities (as defined in the Underwriting Agreement) at the initial public offering price per share that the Common Stock is sold to the public in the IPO as set forth on the cover of the final prospectus filed with the SEC (less any applicable underwriting discounts or commissions).

4. No Integration. The Company shall not, and shall use its commercially reasonable efforts to ensure that no Affiliate of the Company (other than the Investor) shall, sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any security (as defined in Section 2 of the Securities Act) that would be integrated with the offer or sale of the Shares in a manner that would require the registration under the Securities Act of the sale of the Shares to Purchaser, or that would be integrated with the offer or sale of such Shares for purposes of the rules and regulations of any trading market such that it would require stockholder approval prior to the closing of such other transaction unless stockholder approval is obtained before the closing of such subsequent transaction.

5. Rule 144 Reporting. With a view to making available to the Investor the benefits of certain rules and regulations of the SEC that may permit the sale of the Shares to the public without registration, the Company agrees to use commercially reasonable efforts to:

(a) make and keep public information available, as those terms are understood and defined in Rule 144;

(b) file with the SEC in a timely manner all reports and other documents required of the Company under the Exchange Act; and

(c) furnish to the Investor promptly upon written request (i) a written statement by the Company as to its compliance with the public information requirements of Rule 144, (ii) a copy of the most recent annual or quarterly report of the Company, and (iii) such other reports and documents as may be reasonably requested in availing the Investor of any rule or regulation of the SEC permitting the sale of the Shares to the public without registration.

6. Piggyback Registration Rights.

(a) The Company agrees that the Investor shall be entitled to be treated as if it were a “Holder” and the Shares as “Registrable Securities” solely for purposes of the rights: (i) of a Holder with respect to Registrable Securities set forth in Section 2.2 of the Company’s Sixth Amended and Restated Investor’s Rights Agreement, dated January 6, 2026, among the Company and the other parties thereto, as may be amended from time to time (the “IRA”), and (ii) of a Holder who is not an Initiating Holder with respect to Registrable Securities set forth in Section 2.1 of the IRA, in each case with respect to the Shares. The rights of the Investor set forth in this Section 7 shall be subject to the same restrictions (including, without limitation, those set forth in Section 2.3(b) of the IRA) and termination and waiver provisions (including, without limitation, Sections 2.13 and 6.6 of the IRA) as apply to Holders in the IRA.

(b) The terms of Section 2.8 of the IRA shall apply with respect to any Shares included in a registration statement pursuant to this Section 6, mutatis mutandis.

(c) The Company shall pay all fees and expenses incident to the performance of or compliance with this Section 6 by the Company, other than Selling Expenses (as defined in the IRA).

7. Fees and Commissions. The Company shall be solely responsible for the payment of any placement agent’s fees, financial advisory fees, or broker’s commissions (other than for persons engaged by the Investor) relating to or arising out of the sale of Shares contemplated hereby.

8. Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and permitted assigns.

9. Notices. Notices given hereunder shall be deemed to have been duly given, only if given in writing, and on (i) the date of personal delivery; (ii) on the date one day after being delivered to a reputable overnight courier with proper delivery instructions; or (iii) if delivered by email, upon electronic confirmation of receipt to the party being notified as addressed as follows: (a) if to the Investor, to: Regeneron Pharmaceuticals, Inc. 777 Old Saw Mill River Road, Tarrytown, NY 10591, Attention: Treasurer and General Counsel (Leonard.Brooks@regeneron.com; LegalNotices@regeneron.com), with a copy (which shall not constitute notice) to: Ropes & Gray LLP, 1211 Avenue of the Americas New York, NY 10036-8704, Attention: Daniel J. Freshman and Raymond J. Grant (Daniel.Freshman@ropesgray.com; Raymond.Grant@ropesgray.com), (b) if to the Company, to: Parabilis Medicines, Inc. at 30 Acorn Park Drive, Cambridge, MA 02140, Attention: Teresa Jurgensen (tjurgensen@parabilismed.com), with a copy (which shall not constitute notice) to: Goodwin Procter LLP, 100 Northern Ave, Boston, MA 02210, Attention: Kingsley L. Taft and Gregg L. Katz (ktaft@goodwinlaw.com and gkatz@goodwinlaw.com).

10. Entire Agreement and Amendments. This Agreement constitutes the entire agreement of the parties with respect to the subject matter hereof. This Agreement may be amended or waived if, and only if, such amendment or waiver is in writing and signed, in the case of an amendment, by each of the parties hereto or, in the case of a waiver, by the party waiving compliance. No waiver shall be deemed a waiver of any subsequent breach or default.

11. Governing Law. This Agreement shall be governed by and interpreted in accordance with the laws of the State of New York without regard to conflict of laws principles which would result in the application of the law of any other jurisdiction.

12. Severability. The invalidity or unenforceability of any particular provision of this Agreement shall not affect the other provisions hereof.

13. Assignment. This Agreement may not be assigned by the Company or the Investor without the prior written consent of the other parties hereto.

14. Captions. Captions are for convenience only and are not deemed to be part of this Agreement. All references herein to numbered Sections are to Sections of this Agreement unless otherwise indicated.

15. Survival. Sections 5, 6, 8, 11, 12, 13 and 18 hereof, and the representations and warranties contained herein, shall survive the Closing.

16. Counterparts. This Agreement may be executed by pdf and in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

17. Further Assurances. The parties agree to execute such further instruments and to take such further action as may reasonably be necessary to carry out the intent of this Agreement.

18. Legend Removal. The Company shall cooperate with the Investor to facilitate the timely preparation and delivery of certificates or uncertificated shares representing the Shares in connection with sales pursuant to a then-effective and available registration statement registering the resale of all or a portion of the Shares (“Resale Registration Statement”) or Rule 144 free of any restrictive legends and representing such number of shares of Common Stock and registered in such names as the Investor may reasonably request to the extent permitted by such Resale Registration Statement or Rule 144; for the avoidance of doubt, the Company may satisfy its obligations hereunder without issuing physical stock certificates through the use of The Depository Trust Company’s Direct Registration System. Notwithstanding the foregoing, upon written request by the Investor sent following the one-year anniversary of the Closing, the Company agrees to promptly remove any restrictive legends from the Shares at such time as the Shares can be freely sold under Rule 144, free of any volume restrictions or manner of sale limitations, provided that the Company has received a representation letter from the Investor in form and substance reasonably satisfactory to the Company.

19. Termination. This Agreement shall automatically terminate upon the earliest to occur, if any, of: (a) either the Company, on the one hand, or the Underwriters, on the other hand, advising the other in

writing, prior to the execution of the Underwriting Agreement, that they have determined not to proceed with the IPO; (b) termination of the Underwriting Agreement (other than the provisions thereof which survive termination) prior to the sale of any of the Common Stock to the Underwriters; (c) the registration statement filed with the SEC with respect to the IPO is withdrawn; (d) if the Closing has not occurred on or prior to June 25, 2026; or (e) the written consent of each of the Company and the Investor.

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IN WITNESS WHEREOF, the parties hereto have executed this Agreement to be effective as of the date first set forth above.

Form of Underwriting Agreement