Exhibit 10.1


 


Execution Version





 


April 6, 2021


 


Panacea Acquisition Corp. II





357 Tehama Street, Floor 3

San Francisco, CA 94103





 


	Re:	Initial Public Offering



 


Ladies and Gentlemen:


 


This letter (this “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered
into or proposed to be entered into by and between Panacea Acquisition Corp. II, a Cayman Islands exempted company (the “Company”),
and Cowen and Company, LLC, as the representative (“Representative”) of the several underwriters named therein
(each an “Underwriter” and collectively, the “Underwriters”), relating to an underwritten
initial public offering (the “Public Offering”), of up to 17,250,000 of the Company’s Class A ordinary
shares, par value $0.0001 per share (including up to 2,250,000 of the Company’s Class A ordinary shares that may be purchased to
cover the Underwriters’ over-allotment option to purchase additional Class A ordinary shares, if any) (the “Class A
Shares”). The Class A Shares shall be sold in the Public Offering pursuant to a registration statement on Form S-1 and prospectus
(the “Prospectus”) filed by the Company with the Securities and Exchange Commission (the “Commission”).
Certain capitalized terms used herein are defined in paragraph 11 hereof.


 


In order to induce the Company and the Underwriters
to enter into the Underwriting Agreement and to proceed with the Public Offering and for other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, EcoR1 Panacea Holdings II, LLC, a Delaware limited liability company (the “Sponsor”),
and the other undersigned persons (each such other undersigned persons, an “Insider” and collectively, the “Insiders”),
each hereby agrees, severally but not jointly, with the Company as follows:


 


1. The
Sponsor and each Insider agrees that if the Company seeks shareholder approval of a proposed Business Combination, then in connection
with such proposed Business Combination, it, he or she shall (i) vote any Shares owned by it, him or her in favor of any proposed
Business Combination (including any proposals recommended by the Company’s Board of Directors in connection with such Business Combination)
and (ii) not redeem any Shares owned by it, him or her in connection with such shareholder approval.


 






     


     


    

 


2. The
Sponsor and each Insider hereby agrees that in the event that the Company fails to consummate a Business Combination within 24 months
from the closing of the Public Offering (or 27 months from the closing of the Public Offering if the Company has executed a letter of
intent, agreement in principle or definitive agreement for an initial Business Combination within 24 months from the closing of the Public
Offering but has not completed the initial business combination within such 24-month period), or such later period approved by the Company’s
shareholders in accordance with the Company’s amended and restated memorandum and articles of association, the Sponsor and each
Insider shall take all reasonable steps to cause the Company to (i) cease all operations except for the purpose of winding up, (ii) as
promptly as reasonably possible but not more than ten (10) business days thereafter, subject to lawfully available funds therefor, redeem
100% of the Class A Shares sold in the Public Offering (the “Offering Shares”), at a per share price, payable
in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest (which interest shall be net of taxes
payable and less up to $100,000 of interest to pay dissolution expenses), divided by the number of then issued and outstanding Offering
Shares, which redemption will completely extinguish all Public Shareholders’ rights as shareholders (including the right to receive
further liquidation distributions, if any) and (iii) as promptly as reasonably possible following such redemption, subject to the approval
of the Company’s remaining shareholders and the Company’s board of directors, liquidate and dissolve, subject in each case
to the Company’s obligations under Cayman Islands law to provide for claims of creditors and the other requirements of applicable
law. The Sponsor and each Insider agree to not propose any amendment to the Company’s amended and restated memorandum and articles
of association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s
initial Business Combination or to redeem 100% of the Offering Shares if the Company does not complete its initial Business Combination
within 24 months (or 27 months, as applicable) from the closing of the Public Offering or (B) with respect to any other provision relating
to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides its Public Shareholders with the
opportunity to redeem their Offering Shares upon approval of any such amendment at a per share price, payable in cash, equal to the aggregate
amount then on deposit in the Trust Account, including interest (which interest shall be net of taxes payable), divided by the number
of then outstanding Offering Shares.








 


The Sponsor and each Insider acknowledge that it,
he or she has no right, title, interest or claim of any kind in or to any monies held in the Trust Account or any other asset of the Company
as a result of any liquidation of the Company with respect to the Founder Shares, Alignment Shares and Private Placement Shares held by
it. The Sponsor and each Insider hereby further waive, with respect to any Shares held by it, him or her, if any, any redemption rights
it, he or she may have in connection with (x) the consummation of a Business Combination, including, without limitation, any such rights
available in the context of a shareholder vote to approve such Business Combination or in the context of a tender offer made by the Company
to purchase Class A Shares and (y) a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and
articles of association (A) to modify the substance or timing of the Company’s obligation to allow redemptions in connection with
the Company’s initial Business Combination or to redeem 100% of the Offering Shares if the Company has not consummated its initial
Business Combination within 24 months (or 27 months, as applicable) from the closing of the Public Offering or (B) with respect to any
other provision relating to shareholders’ rights or pre-initial Business Combination activity (although the Sponsor and the Insiders
shall be entitled to redemption and liquidation rights with respect to any Offering Shares it or they hold if the Company fails to consummate
a Business Combination within 24 months (or 27 months, as applicable) from the date of the closing of the Public Offering).


 






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3. Notwithstanding
the provisions set forth in paragraphs 7(a)-(c) below, during the period commencing on the effective date of the Underwriting Agreement
and ending 180 days after such date, the Sponsor and each Insider shall not, without the prior written consent of the Representative,
(i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any
option, right or warrant to purchase, or otherwise transfer or dispose of, directly or indirectly, or file with, or submit to, the Commission
a registration statement under the Securities Act of 1933, as amended (the “Securities Act”), relating to any
Class A Shares, Founder Shares, Alignment Shares or any securities convertible into, or exercisable, or exchangeable for, any Class A
Shares, Founder Shares or Alignment Shares, or publicly disclose the intention to undertake any of the foregoing, or (ii) enter into any
swap or other arrangement that transfers, in whole or in part, any of the economic consequences of ownership of any Class A Shares, Founder
Shares, Alignment Shares or any such other securities, whether any such transaction described in clause (i) or (ii) above is to be settled
by delivery of shares or such other securities, in cash or otherwise; provided, however, that the foregoing does not apply
to the forfeiture of any Founder Shares or Alignment Shares pursuant to their terms or any transfer of Founder Shares or Alignment Shares
to any current or future independent director of the company (as long as such current or future independent director transferee is subject
to this Letter Agreement or executes an agreement substantially identical to the terms of this Letter Agreement, as applicable to directors
and officers at the time of such transfer; and as long as, to the extent any Section 16 reporting obligation is triggered as a result
of such transfer, any related Section 16 filing includes a practical explanation as to the nature of the transfer). Each of the Insiders
and the Sponsor acknowledges and agrees that, prior to the effective date of any release or waiver, of the restrictions set forth in this
paragraph 3 or paragraph 7 below, the Company may announce the impending release or waiver by press release through a major news service
at least two business days before the effective date of the release or waiver. The provisions of this paragraph will not apply if (i)
the release or waiver is effected solely to permit a transfer of securities that is not for consideration and (ii) the transferee has
agreed in writing to be bound by the same terms described in this Letter Agreement to the extent and for the duration that such terms
remain in effect at the time of the transfer.


 


4. In
the event of the liquidation of the Trust Account, the Sponsor (which for purposes of clarification shall not extend to any other stockholders,
members or managers of the Sponsor) agrees to indemnify and hold harmless the Company against any and all loss, liability, claim, damage
and expense whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in investigating, preparing
or defending against any litigation, whether pending or threatened, or any claim whatsoever) to which the Company may become subject as
a result of any claim by (i) any third party (other than the Company’s independent registered public accounting firm) for services
rendered or products sold to the Company or (ii) a prospective target business with which the Company has discussed entering into
a transaction agreement (a “Target”); provided, however, that such indemnification of the Company
by the Sponsor shall apply only to the extent necessary to ensure that such claims by a third party for services rendered (other than
the Company’s independent registered public accounting firm) or products sold to the Company or a Target do not reduce the amount
of funds in the Trust Account to below (i) $10.00 per Offering Share or (ii) such lesser amount per Offering Share held in the Trust
Account as of the date of the liquidation of the Trust Account due to reductions in the value of the trust assets as of the date of the
liquidation of the Trust Account, in each case, net of the amount of interest which may be withdrawn to pay taxes, except as to any claims
by a third party who executed a waiver of any and all rights to seek access to the Trust Account and except as to any claims under the
Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as
amended. In the event that any such executed waiver is deemed to be unenforceable against such third party, the Sponsor shall not be responsible
to the extent of any liability for such third party claims. The Sponsor shall have the right to defend against any such claim with counsel
of its choice reasonably satisfactory to the Company if, within 15 days following written receipt of notice of the claim to the Sponsor,
the Sponsor notifies the Company in writing that it shall undertake such defense.


 






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5. To
the extent that the Underwriters do not exercise their option to purchase up to an additional 2,250,000 Class A Shares within 45 days
from the date of the Prospectus (and as further described in the Prospectus), the Sponsor agrees that it shall forfeit, at no cost: (A)
a number of Founder Shares in the aggregate equal to 300,000 multiplied by a fraction, (i) the numerator of which is 2,250,000 minus the
number of Class A Shares purchased by the Underwriters upon the exercise of their option to purchase additional Class A Shares and (ii)
the denominator of which is 2,250,000 and (B) a number of Alignment Shares in the aggregate equal to 450,000 multiplied by a fraction,
(i) the numerator of which is 2,250,000 minus the number of Class A Shares purchased by the Underwriters upon the exercise of their option
to purchase additional Class A Shares and (ii) the denominator of which is 2,250,000. All references in this Letter Agreement to Founder
Shares or Alignment Shares of the Company being forfeited shall take effect as surrenders for no consideration of such Founder Shares
or Alignment Shares, as applicable, as a matter of Cayman Islands law. The forfeiture will be adjusted to the extent that the option to
purchase additional Class A Shares is not exercised in full by the Underwriters so that the number of Founder Shares and Alignment Shares
will equal an aggregate of 10.0% and 15.0%, respectively, of the Company’s issued and outstanding Shares after the Public Offering
(not including the Private Placement Shares).


 


6. The
Sponsor and each Insider hereby agree and acknowledge that: (i) the Underwriters and the Company would be irreparably injured in the event
of a breach by such Sponsor or Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 5, 7(a), 7(b), 7(c) and 9 of this Letter
Agreement (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party shall be entitled to seek
injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of such breach.


 


7. (a)
The Sponsor and each Insider agree that it, he or she shall not Transfer (as defined below) any Founder Shares (or Class A Shares issuable
upon conversion thereof) until the earlier of (A) one year after the completion of the Company’s initial Business Combination and
(B) subsequent to the Business Combination, (x) the date on which the Company completes a liquidation, merger, share exchange, reorganization
or other similar transaction that results in all of the Public Shareholders having the right to exchange their Class A Shares for cash,
securities or other property or (y) if the last reported sale price of the Class A Share equals or exceeds $12.00 per share (as adjusted
for share sub-divisions, share dividends, rights issuances, consolidations, reorganizations, recapitalizations and other similar transactions)
for any 20 trading days within any 30-trading day period commencing at least 150 days after the Company’s initial Business Combination
(the “Founder Shares Lock-Up Period”).


 


(b) The
Sponsor and each Insider agrees that it, he or she shall not Transfer any Alignment Shares until the earlier of (A) their conversion into
Class A Shares; and (B) after the Company completes its initial Business Combination, the date on which the Company consummates a merger,
share exchange, asset acquisition, share purchase, reorganization or other similar transaction that results in both a Change of Control
and all of the Company’s Public Shareholders having the right to exchange their Class A Shares for cash, securities or other property
(the “Alignment Shares Lock-Up Period”).


 






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(c) The
Sponsor and each Insider agree that it, he or she shall not Transfer any Private Placement Shares until 30 days after the completion of
a Business Combination (the “Private Placement Shares Lock-Up Period”, together with the Founder Shares Lock-Up
Period and the Alignment Shares Lock-Up Period, the “Lock-Up Periods”).


 


(d) Notwithstanding
the provisions set forth in paragraphs 7(a)-(c), Transfers of the Founder Shares, Alignment Shares, Private Placement Shares and Class
A Shares issued or issuable upon the exercise or conversion of the Founder Shares or the Alignment Shares and that are held by the Sponsor
or any Insider or any of their permitted transferees (that have complied with this paragraph 7(d)), are permitted (a) to the Company’s
officers or directors, any affiliates or family members of any of the Company’s officers or directors, any members of the Sponsor,
or any affiliates of the Sponsor, (b) in the case of an individual, by gift to a member of the individual’s immediate family or
to a trust, the beneficiary of which is a member of the individual’s immediate family or an affiliate of such person, or to a charitable
organization; (c) in the case of an individual, by virtue of laws of descent and distribution upon death of the individual; (d) in the
case of an individual, pursuant to a qualified domestic relations order; (e) by private sales or transfers made in connection with the
consummation of the Company’s Business Combination at prices no greater than the price at which the securities were originally purchased;
(f) in the event of the Company’s liquidation prior to the Company’s completion of an initial Business Combination; (g) in
the case of an entity, by virtue of the laws of its jurisdiction or its organizational documents or operating agreement; or (h) in the
event of the Company’s completion of a liquidation, merger, share exchange, reorganization or other similar transaction which results
in all of the Public Shareholders having the right to exchange their Class A Shares for cash, securities or other property subsequent
to the Company’s completion of an initial Business Combination; provided, however, that in the case of clauses (a)
through (e), these permitted transferees must enter into a written agreement with the Company agreeing to be bound by the transfer restrictions
and other applicable restrictions in this Letter Agreement.


 


8. The
Sponsor and each Insider represent and warrant that it, he or she has never been suspended or expelled from membership in any securities
or commodities exchange or association or had a securities or commodities license or registration denied, suspended or revoked. Each Insider’s
biographical information furnished to the Company, if any (including any such information included in the Prospectus), is true and accurate
in all respects and does not omit any material information with respect to such Insider’s background. The Sponsor and each Insider’s
questionnaire furnished to the Company, if any, is true and accurate in all respects. The Sponsor and each Insider represent and warrant
that: it is not subject to or a respondent in any legal action for, any injunction, cease-and-desist order or order or stipulation to
desist or refrain from any act or practice relating to the offering of securities in any jurisdiction; it has never been convicted of,
or pleaded guilty to, any crime (i) involving fraud, (ii) relating to any financial transaction or handling of funds of another person,
or (iii) pertaining to any dealings in any securities and it is not currently a defendant in any such criminal proceeding.


 


9. Except
as disclosed in, or as expressly contemplated by, the Prospectus, or as may be otherwise contemplated in the tender offer documents or
proxy materials related to the Company’s initial Business Combination, neither the Sponsor nor any Insider nor any affiliate of
the Sponsor or any Insider, nor any director or officer of the Company, shall receive from the Company any finder’s fee, reimbursement,
consulting fee, monies in respect of any repayment of a loan or other compensation prior to, or in connection with any services rendered
in order to effectuate the consummation of the Company’s initial Business Combination (regardless of the type of transaction that
it is).


 






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10. The
Sponsor and each Insider have full right and power, without violating any agreement to which it is bound (including, without limitation,
any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Letter Agreement and, as applicable,
to serve as an officer and/or a director on the board of directors of the Company and hereby consents to being named in the Prospectus
as an officer and/or a director of the Company.


 


11. As
used herein, (i) “Business Combination” shall mean a merger, share exchange, asset acquisition, share purchase,
reorganization or similar business combination, involving the Company and one or more businesses; (ii) “Shares”
shall mean, collectively, the Class A Shares, the Founder Shares, the Alignment Shares and the Private Placement Shares; (iii) “Founder
Shares” shall mean the 2,300,000 Class B ordinary shares, par value $0.0001 per share, issued and outstanding immediately
prior to the consummation of the Public Offering; (iv) “Alignment Shares” shall mean the 3,450,000 Class
F ordinary shares, par value $0.0001 per share, of the Company that are issued and outstanding immediately prior to the consummation of
the Public Offering; (v) “Initial Shareholders” shall mean the Sponsor and any Insider that holds Founder Shares
or Alignment Shares; (vi) “Private Placement Shares” shall mean the 500,000 Class A Shares (or 545,000 Class
A Shares if the over-allotment option is exercised in full) that the Sponsor has agreed to purchase for an aggregate purchase price of
$5,000,000 in the aggregate (or $5,450,000 if the over-allotment option is exercised in full), or $10.00 per share, in a private placement
that shall occur substantially concurrently with the consummation of the Public Offering; (vii) “Public Shareholders”
shall mean the holders of Offering Shares; (viii) “Trust Account” shall mean the trust fund into which
a portion of the net proceeds of the Public Offering shall be deposited; (ix) “Transfer” shall mean the
(a) sale or assignment of, offer to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase or
otherwise dispose of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position or
liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Securities Exchange Act
of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder with respect to, any security, (b) entry
into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any
security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) public announcement
of any intention to effect any transaction specified in clause (a) or (b) herein; and (x) “Change of Control”
shall mean the occurrence of any one of the following after the consummation of the initial Business Combination (but not in connection
with such initial Business Combination) if any of the following occurs: (A) a “person” or “group” within the meaning
of Section 13(d) of the Exchange Act, other than the Company, any of its wholly owned subsidiaries and the Company’s and its wholly-owned
subsidiaries’ respective employee benefit plans, (1) has become the direct or indirect “beneficial owner,” as defined
in Rule 13d-3 under the Exchange Act, of Class A Shares representing more than 50% of the voting power of the Company and (2) has filed
a Schedule TO or any schedule, form or report under the Exchange Act disclosing that an event described in clause (1) above has occurred;
provided, however, that a “person” or “group” shall not be deemed a beneficial owner of, or to own beneficially,
any securities tendered pursuant to a tender or exchange offer made by or on behalf of such “person” or “group”
or any of their affiliates until such tendered securities are accepted for purchase or exchange thereunder; (B) the consummation of (1)
any recapitalization, reclassification or change of the outstanding ordinary shares (other than a change from no par value to par value,
a change in par value or a change from par value to no par value, or changes resulting from a subdivision or combination) as a result
of which all of the outstanding ordinary shares would be converted into, or exchanged for, ordinary shares, other securities, or other
property or assets; (2) any share exchange, consolidation or merger of the company pursuant to which all of the outstanding Class A Shares
shall be converted into cash, securities or other property or assets (including any combination thereof); or (3) any sale, lease or other
transfer in one transaction or a series of transactions of all or substantially all of the Company’s or its consolidated assets,
taken as a whole, to any person or entity (other than one of the Company’s wholly owned subsidiaries); provided, however, that a
transaction described in clauses (1) or (2) in which the holders of all classes of the Company’s common equity immediately prior
to such transaction own, directly or indirectly, more than 50% of all classes of the common equity of the continuing or surviving entity
immediately after such transaction in substantially the same proportions as such ownership immediately prior to such transaction shall
not be a Change of Control pursuant to this clause (B); (C) the Company’s shareholders approve any plan or proposal for the Company’s
liquidation or dissolution (other than a liquidation or dissolution that shall occur contemporaneously with a transaction described in
clause (B)(2) above); or (D) Class A Shares cease to be listed or quoted on any of The New York Stock Exchange, the Nasdaq Global Select
Market or the Nasdaq Global Market (or any of their respective successors / affiliates); provided, however, that a transaction or transactions
described in clauses (A) or (B) above shall not constitute a Change of Control, if at least 90% of the consideration received or to be
received by the holders of Class A Shares, excluding cash payments for fractional shares and cash payments made in respect of dissenters’
appraisal rights, in connection with such transaction or transactions consists of Class A Shares that are listed or quoted on any of The
New York Stock Exchange, the Nasdaq Global Select Market or the Nasdaq Global Market (or any of their respective successors / affiliates)
or shall be so listed or quoted when issued or exchanged in connection with such transaction or transactions, and as a result of such
transaction or transactions such consideration becomes the equity interests in which Alignment Shares convert into.


 






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12. This
Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof and
supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral, to the extent they
relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may not be changed, amended,
modified or waived (other than to correct a typographical error) as to any particular provision, except by a written instrument executed
by (1) each Insider and the Sponsor that is the subject of any such change, amendment modification or waiver and (2) the Company.


 


13. No
party hereto may assign either this Letter Agreement or any of its rights, interests, or obligations hereunder without the prior written
consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate
to transfer or assign any interest or title to the purported assignee. This Letter Agreement shall be binding on the Sponsor and each
Insider and their respective successors, heirs and assigns and permitted transferees.


 


14. Nothing
in this Letter Agreement shall be construed to confer upon, or give to, any person or corporation other than the parties hereto any right,
remedy or claim under or by reason of this Letter Agreement or of any covenant, condition, stipulation, promise or agreement hereof. All
covenants, conditions, stipulations, promises and agreements contained in this Letter Agreement shall be for the sole and exclusive benefit
of the parties hereto and their successors, heirs, personal representatives and assigns and permitted transferees; provided, however,
that the Underwriters shall benefit from the provisions set forth in paragraph 3, which such paragraphs shall not be amended or modified
without the written consent of the Representative.


 


15. This
Letter Agreement may be executed in any number of original or facsimile counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.


 


16. This
Letter Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the
validity or enforceability of this Letter Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid
or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Letter Agreement a provision
as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable.


 


17. This
Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York. The parties hereto
(i) all agree that any action, proceeding, claim or dispute arising out of, or relating in any way to, this Letter Agreement shall be
brought and enforced in the courts of New York City, in the State of New York, and irrevocably submit to such jurisdiction and venue,
which jurisdiction and venue shall be exclusive and (ii) waive any objection to such exclusive jurisdiction and venue or that such courts
represent an inconvenient forum.


 


18. Any
notice, consent or request to be given in connection with any of the terms or provisions of this Letter Agreement shall be in writing
and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or
facsimile or other electronic transmission.


 


19. Each
party hereto shall not be liable for any breaches or misrepresentations contained in this Letter Agreement by any other party to this
Letter Agreement, and no party shall be liable or responsible for the obligations of another party, including, without limitation, indemnification
obligations and notice obligations.


 


20. This
Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-Up Periods and (ii) the liquidation of the Company;
provided, however, that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated
and closed by December 31, 2021; provided further that paragraph 4 of this Letter Agreement shall survive such liquidation.


 


[Signature page follows]


 




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	 	Sincerely,
	 	 
	 	ECOR1 PANACEA HOLDINGS II, LLC
	 	 
	 	By: 	/s/
    Oleg Nodelman
	 	Name:	Oleg Nodelman
	 	Title:	Authorized Signatory
	 	
	 	/s/
    Oleg Nodelman
	 	Oleg Nodelman
	 	 
	 	/s/
    Scott Perlen
	 	Scott Perlen
	 	 
	 	/s/
    Scott Platshon
	 	Scott Platshon
	 	 
	 	/s/
    Caroline Stout
	 	Caroline Stout
	 	 
	 	/s/
    Sarah Marriott
	 	Sarah Marriott
	 	 
	 	/s/
    Douglas Giordano
	 	Douglas Giordano
	 	 
	 	/s/
    Nina Kjellson
	 	Nina Kjellson
	 	 
	 	/s/
    Praveen Tipirneni
	 	Praveen Tipirneni, M.D.
	 	 
	 	/s/
    Douglas E. Williams
	 	Douglas E. Williams, Ph.D.


 


[Signature Page to Letter Agreement]





 






    


     


    




 


	Acknowledged and Agreed: 	 
	 	 
	Panacea Acquisition Corp. II	 
	 	 
	By:	 /s/ Oleg Nodelman	 
		Name:	Oleg Nodelman	
		Title:	Chief Executive Officer	



 


 


[Signature Page to Letter Agreement]