Exhibit 10.9


 


October 6, 2020


 


Montes Archimedes Acquisition Corp.

724 Oak Grove, Suite 130

Menlo Park, CA 94025


 


Re:     Initial
Public Offering


 


Ladies and Gentlemen:


 


This letter (the “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered
into by and between Montes Archimedes Acquisition Corp., a Delaware corporation (the “Company”) and Citigroup
Global Markets Inc. and Jefferies LLC, as representatives (the “Representatives”) of the several
underwriters named in Schedule A thereto (the “Underwriters”), relating to an underwritten initial public offering
(the “IPO”) of the Company’s units (the “Units”), each unit comprised of one share
of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”), and one-half
of one redeemable warrant, each whole warrant exercisable for one share of Common Stock (each, a “Warrant”).
Certain capitalized terms used herein are defined in paragraph 12 hereof.


 


In order to induce the Company and the
Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the benefit that such
IPO will confer upon the undersigned, and for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned hereby agrees with the Company as follows:


 


		1.	If the Company solicits approval of its stockholders of a Business Combination, the undersigned
will vote all shares of Common Stock beneficially owned by him or her, whether acquired before, in or after the IPO, in favor of
such Business Combination.



 


		2.	In the event that the Company does not complete a Business Combination within the time period set
forth in the Company’s amended and restated certificate of incorporation, as the same may be further amended from time to
time (the “Charter”), the undersigned will, as promptly as possible, take all necessary actions 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 10 business days thereafter, redeem the IPO Shares, at a per-share price, payable in cash, equal to the aggregate
amount then on deposit in the Trust Account, including interest earned on the Trust Account not previously released to the Company
to pay its tax obligations, if any (less up to $100,000 of such net interest to pay dissolution expenses), divided by the number
of then outstanding IPO Shares, which redemption will completely extinguish public stockholders’ rights as stockholders (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 stockholders and the Company’s board of directors, dissolve
and liquidate, subject in the cases of clauses (ii) and (iii) to the Company’s obligations under Delaware law to
provide for claims of creditors and in all cases subject to the other requirements of applicable law. The undersigned hereby waives
any and all right, title, interest or claim of any kind in or to any distribution of the Trust Account and any remaining net assets
of the Company as a result of such liquidation with respect to the Founder Shares owned by the undersigned. However, if any of
the undersigned have acquired IPO Shares in or after the IPO, they will be entitled to liquidating distributions from the Trust
Account with respect to such IPO Shares in the event that the Company does not complete a Business Combination within the time
period set forth in the Charter. The undersigned acknowledges and agrees that there will be no distribution from the Trust Account
with respect to any Warrants, all rights of which will terminate on the Company’s liquidation.



 






     


     


    

 


		3.	The undersigned acknowledges and agrees that prior to entering into a definitive agreement for
a Business Combination with a target business that is affiliated with the undersigned or any other Insiders of the Company or their
affiliates, such transaction must be approved by a majority of the Company’s disinterested independent directors and the
Company must obtain an opinion from an independent investment banking firm, which is a member of the Financial Industry Regulatory
Authority, or an independent accounting firm that such Business Combination is fair to the Company’s unaffiliated stockholders
from a financial point of view.



 


		4.	None of the undersigned, any member of the family of any of the undersigned, or any affiliate of
the undersigned will be entitled to receive and will not accept any compensation or other cash payment from the Company prior to,
or for services rendered in order to effectuate, the completion of the Business Combination; provided that the Company shall be
allowed to make the payments set forth in the Registration Statement adjacent to the caption “Prospectus Summary—The
Offering—Limited payments to insiders.”



 


		5.	(a)The undersigned agrees that the Founder Shares may not be transferred, assigned or sold
(except to certain permitted transferees as described in the Registration Statement or herein) (the “Lockup”)
until the earlier to occur of: (1) one year after the completion of a Business Combination or (2) the date following
the completion of the Company’s initial Business Combination on which the Company completes a liquidation, merger, stock
exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange their
shares of Common Stock for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Company’s
Common Stock equals or exceeds $12.00 per share (as adjusted for share splits, share capitalizations, reorganizations, recapitalizations
and the like) 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 will be released from the Lockup.



 


		(b)	Notwithstanding the provisions set forth in paragraphs 5(a) and 5(c), during the period commencing
on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned will not, without the
prior written consent of the Representatives pursuant to the Underwriting Agreement, (i) sell, offer to sell, contract or
agree to sell, hypothecate, pledge, hedge or otherwise dispose of or agree to dispose of (or enter into any transaction that is
designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic
disposition due to cash settlement or otherwise) by the undersigned or any affiliate of the undersigned or any person in privity
with the undersigned or any affiliate of the undersigned), directly or indirectly, including the filing (or participation in the
filing) of a registration statement with the Securities and Exchange Commission (the “SEC”) in respect of, or
establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16
of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and the rules and regulations
of the SEC promulgated thereunder with respect to, any other Units, shares of Common Stock, Founder Shares or Warrants or any securities
convertible into, or exercisable, or exchangeable for, shares of Common Stock owned by it, him or her, (ii) enter into any
swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any
Units, shares of Common Stock, Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable for,
shares of Common Stock owned by it, him or her, whether any such transaction is to be settled by delivery of such securities, in
cash or otherwise, or (iii) publicly announce any intention to effect any transaction, including the filing of a registration
statement, specified in clause (i) or (ii). The provisions of this paragraph will not apply (i) to the transfer of Founder
Shares to any independent director appointed or elected to the Company’s board of directors before or after the IPO or (ii) if
the release or waiver is effected solely to permit a transfer not for consideration and, in each case 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.



 






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		(c)	The undersigned agrees that until the Company completes an initial Business Combination, the undersigned’s
Private Placement Warrants will be subject to the transfer restrictions described in the Private Placement Warrants Purchase Agreement
relating to the undersigned’s Private Placement Warrants.



 


		(d)	Notwithstanding the provisions set forth in paragraphs 5(a) and (c), transfers, assignments
and sales by the undersigned of the Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon
the exercise of the Private Placement Warrants or conversion of the Founder Shares are permitted (i) to the Company’s
officers or directors, any affiliates or family members of any of the Company’s officers or directors, to Patient Square
Capital LLC, a Delaware limited liability company (the “Sponsor”), any members or partners of the Sponsor or
its affiliates, any affiliates of the Sponsor, or any employees of such affiliates; (ii) 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 one of the individual’s
immediate family, an affiliate of such person or to a charitable organization; (iii) in the case of an individual, by virtue
of laws of descent and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified
domestic relations order; (v) by private sales or transfers made in connection with the completion of the Business Combination
at prices no greater than the price at which the Founder Shares, Private Placement Warrants or shares of Common Stock, as applicable,
were originally purchased; (vi) by virtue of the Sponsor’s organizational documents upon liquidation or dissolution
of the Sponsor; (vii) to the Company for no value for cancellation in connection with the completion of the Business Combination;
(viii) in the event of the Company’s liquidation prior to the completion of a Business Combination; or (ix) in
the event of completion of a liquidation, merger, share exchange or other similar transaction which results in all of the Company’s
stockholders having the right to exchange their shares of Common Stock for cash, securities or other property subsequent to the
completion of a Business Combination; provided, however, that in the case of clauses (i) through (vi) these permitted
transferees must enter into a written agreement agreeing to be bound by the restrictions herein. For the avoidance of doubt, the
transfers of Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon the exercise of the
Private Placement Warrants or conversion of the Founder Shares shall be permitted regardless of whether a filing under Section 16(a) of
the Exchange Act shall be required or shall be voluntarily made with respect to such transfers.



 






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		(e)	The undersigned acknowledges and agrees that if, in order to complete any Business Combination,
the holders of Founder Shares or Private Placement Warrants are required to contribute back to the capital of the Company a portion
of any such securities to be cancelled by the Company or transfer any such securities to third parties, the undersigned will contribute
back to the capital of the Company or transfer to such third parties, at no cost, a proportionate number of Founder Shares or Private
Placement Warrants, as applicable, pro rata with the other holders of Founder Shares or Private Placement Warrants, as applicable.



 


		6.	[Reserved].



 


		7.	The undersigned agrees to be a director or officer of the Company, as applicable, until the earlier
of the completion by the Company of an initial Business Combination, the liquidation of the Company, or his or her removal, death
or incapacity. In the event of the removal or resignation of the undersigned as a director or officer (as applicable), the undersigned
agrees that he or she will not, prior to the completion of the Business Combination, without the prior express written consent
of the Company, (i) use for the benefit of the undersigned or to the detriment of the Company or (ii) disclose to any
third party (unless required by law or governmental authority), any information regarding a potential target of the Company that
is not generally known by persons outside of the Company, the Sponsor, or their respective affiliates. The undersigned’s
biographical information previously furnished to the Company and the Representatives is true and accurate in all material respects,
does not omit any material information with respect to the undersigned’s background and contains all of the information required
to be disclosed pursuant to Item 401 of Regulation S-K, promulgated under the Securities Act of 1933, as amended. The undersigned’s
FINRA Questionnaire previously furnished to the Company and the Representatives is true and accurate in all material respects.
The undersigned represents and warrants that:



 


		(a)	he or she 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;



 






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		(b)	he or she has never been convicted of or pleaded guilty to any crime (i) involving any fraud
or (ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings
in any securities and he is not currently a defendant in any such criminal proceeding; and



 


		(c)	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.



 


		8.	The undersigned has full right and power, without violating any agreement by which he or she is
bound, to enter into this Letter Agreement and to serve as a director or officer of the Company, as applicable.



 


		9.	The undersigned hereby waives his or her right to exercise redemption rights with respect to any
of the Company’s shares of Common Stock owned or to be owned by the undersigned, directly or indirectly, whether such shares
be part of the Founder Shares or IPO Shares, and agrees that he or she will not seek redemption with respect to such shares (or
sell such shares to the Company in any tender offer) in connection with any stockholder vote to approve (x) a Business Combination
or (y) an amendment to the Charter that would affect the substance or timing of the Company’s obligation to allow redemption
in connection with the Business Combination or to redeem 100% of the shares of Common Stock if the Company has not completed a
Business Combination within 24 months from the closing of the IPO.



 


		10.	The undersigned hereby agrees to not propose any amendment to the Charter that would affect the
substance or timing of the Company’s obligation to provide for the redemption of the shares of Common Stock held by public
stockholders in connection with an initial Business Combination or to redeem 100% of the shares of Common Stock held by public
stockholders if the Company does not complete an initial Business Combination within 24 months from the closing of the IPO unless
the Company provides its public stockholders with the opportunity to redeem their Common Stock 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 earned
on the funds held in the Trust Account and not previously released to the Company to pay taxes, divided by the number of then outstanding
shares of Common Stock held by public stockholders.



 


		11.	This Letter Agreement shall be governed by and construed and enforced in accordance with the laws
of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive
laws of another jurisdiction. The undersigned hereby (i) agrees that any action, proceeding or claim against him arising out
of or relating in any way to this Letter Agreement shall be brought and enforced in the courts of the State of New York of the
United States of America for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive and (ii) waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient
forum.



 






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		12.	As used herein, (i) a “Business Combination” shall mean a merger, stock exchange,
asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses
or entities; (ii) “Insiders” shall mean all officers, directors and sponsor of the Company immediately prior to
the IPO; (iii) “Founder Shares” shall mean all of the Class B Common Stock of the Company, par value $0.0001
per share, acquired by an Insider prior to the IPO; (iv) “IPO Shares” shall mean the shares of Common Stock issued
in the Company’s IPO; (v) “Private Placement Warrants” shall mean the warrants that are being sold privately
by the Company simultaneously with the consummation of the IPO; (vi) “Trust Account” shall mean the trust account
into which the net proceeds of the Company’s IPO and a portion of the proceeds from the sale of the Private Placement Warrants
will be deposited; and (vii) “Registration Statement” means the Company’s registration statement on Form S-1
(SEC File No. 333-248802) filed with the SEC, as amended.



 


		13.	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 all parties hereto.



 


		14.	The undersigned acknowledges and understands that the Underwriters and the Company will rely upon
the agreements, representations and warranties set forth herein in proceeding with the IPO. Nothing contained herein shall be deemed
to render any Underwriter a representative of, or a fiduciary with respect to, the Company, its stockholders or any creditor or
vendor of the Company with respect to the subject matter hereof.



 


		15.	This Letter Agreement shall be binding on the undersigned and such person’s respective successors,
heirs, personal representatives and assigns. This Letter Agreement shall terminate on the earlier of (i) the completion of
a Business Combination and (ii) the liquidation of the Company; provided, that such termination shall not relieve the undersigned
from liability for any breach of this agreement prior to its termination. The parties hereto may not assign either this Letter
Agreement or any of their rights, interests, or obligations hereunder without the prior written consent of the other party. 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.



 






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	 	Sincerely,
	 	 
	 	 
	 	By:	/s/ George Barrett
	 	Name of Insider: George Barrett


 


 



    


     


    




 


	 	Acknowledged and Agreed:
	 	 
	 	 
	 	MONTES ARCHIMEDES ACQUISITION CORP.
	 	 
	 	 
	 	By:	/s/ Maria C. Walker
	 	Name:	Maria C. Walker
	 	Title:	Chief Financial Officer



 


Signature Page to Letter Agreement


 






    


     


    

 





October 6, 2020


 


Montes Archimedes Acquisition Corp.

724 Oak Grove, Suite 130

Menlo Park, CA 94025


 


Re:     Initial
Public Offering


 


Ladies and Gentlemen:


 


This letter (the “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered
into by and between Montes Archimedes Acquisition Corp., a Delaware corporation (the “Company”) and Citigroup
Global Markets Inc. and Jefferies LLC, as representatives (the “Representatives”) of the several
underwriters named in Schedule A thereto (the “Underwriters”), relating to an underwritten initial public offering
(the “IPO”) of the Company’s units (the “Units”), each unit comprised of one share
of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”), and one-half
of one redeemable warrant, each whole warrant exercisable for one share of Common Stock (each, a “Warrant”).
Certain capitalized terms used herein are defined in paragraph 12 hereof.


 


In order to induce the Company and the
Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the benefit that such
IPO will confer upon the undersigned, and for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned hereby agrees with the Company as follows:


 


		1.	If the Company solicits approval of its stockholders of a Business Combination, the undersigned
will vote all shares of Common Stock beneficially owned by him or her, whether acquired before, in or after the IPO, in favor of
such Business Combination.



 


		2.	In the event that the Company does not complete a Business Combination within the time period set
forth in the Company’s amended and restated certificate of incorporation, as the same may be further amended from time to
time (the “Charter”), the undersigned will, as promptly as possible, take all necessary actions 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 10 business days thereafter, redeem the IPO Shares, at a per-share price, payable in cash, equal to the aggregate
amount then on deposit in the Trust Account, including interest earned on the Trust Account not previously released to the Company
to pay its tax obligations, if any (less up to $100,000 of such net interest to pay dissolution expenses), divided by the number
of then outstanding IPO Shares, which redemption will completely extinguish public stockholders’ rights as stockholders (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 stockholders and the Company’s board of directors, dissolve
and liquidate, subject in the cases of clauses (ii) and (iii) to the Company’s obligations under Delaware law to
provide for claims of creditors and in all cases subject to the other requirements of applicable law. The undersigned hereby waives
any and all right, title, interest or claim of any kind in or to any distribution of the Trust Account and any remaining net assets
of the Company as a result of such liquidation with respect to the Founder Shares owned by the undersigned. However, if any of
the undersigned have acquired IPO Shares in or after the IPO, they will be entitled to liquidating distributions from the Trust
Account with respect to such IPO Shares in the event that the Company does not complete a Business Combination within the time
period set forth in the Charter. The undersigned acknowledges and agrees that there will be no distribution from the Trust Account
with respect to any Warrants, all rights of which will terminate on the Company’s liquidation.



 






    


     


    

 


		3.	The undersigned acknowledges and agrees that prior to entering into a definitive agreement for
a Business Combination with a target business that is affiliated with the undersigned or any other Insiders of the Company or their
affiliates, such transaction must be approved by a majority of the Company’s disinterested independent directors and the
Company must obtain an opinion from an independent investment banking firm, which is a member of the Financial Industry Regulatory
Authority, or an independent accounting firm that such Business Combination is fair to the Company’s unaffiliated stockholders
from a financial point of view.



 


		4.	None of the undersigned, any member of the family of any of the undersigned, or any affiliate of
the undersigned will be entitled to receive and will not accept any compensation or other cash payment from the Company prior to,
or for services rendered in order to effectuate, the completion of the Business Combination; provided that the Company shall be
allowed to make the payments set forth in the Registration Statement adjacent to the caption “Prospectus Summary—The
Offering—Limited payments to insiders.”



 


		5.	(a)The undersigned agrees that the Founder Shares may not be transferred, assigned or sold
(except to certain permitted transferees as described in the Registration Statement or herein) (the “Lockup”)
until the earlier to occur of: (1) one year after the completion of a Business Combination or (2) the date following
the completion of the Company’s initial Business Combination on which the Company completes a liquidation, merger, stock
exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange their
shares of Common Stock for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Company’s
Common Stock equals or exceeds $12.00 per share (as adjusted for share splits, share capitalizations, reorganizations, recapitalizations
and the like) 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 will be released from the Lockup.



 


		(b)	Notwithstanding the provisions set forth in paragraphs 5(a) and 5(c), during the period commencing
on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned will not, without the
prior written consent of the Representatives pursuant to the Underwriting Agreement, (i) sell, offer to sell, contract or
agree to sell, hypothecate, pledge, hedge or otherwise dispose of or agree to dispose of (or enter into any transaction that is
designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic
disposition due to cash settlement or otherwise) by the undersigned or any affiliate of the undersigned or any person in privity
with the undersigned or any affiliate of the undersigned), directly or indirectly, including the filing (or participation in the
filing) of a registration statement with the Securities and Exchange Commission (the “SEC”) in respect of, or
establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16
of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and the rules and regulations
of the SEC promulgated thereunder with respect to, any other Units, shares of Common Stock, Founder Shares or Warrants or any securities
convertible into, or exercisable, or exchangeable for, shares of Common Stock owned by it, him or her, (ii) enter into any
swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any
Units, shares of Common Stock, Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable for,
shares of Common Stock owned by it, him or her, whether any such transaction is to be settled by delivery of such securities, in
cash or otherwise, or (iii) publicly announce any intention to effect any transaction, including the filing of a registration
statement, specified in clause (i) or (ii). The provisions of this paragraph will not apply (i) to the transfer of Founder
Shares to any independent director appointed or elected to the Company’s board of directors before or after the IPO or (ii) if
the release or waiver is effected solely to permit a transfer not for consideration and, in each case 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.



 






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		(c)	The undersigned agrees that until the Company completes an initial Business Combination, the undersigned’s
Private Placement Warrants will be subject to the transfer restrictions described in the Private Placement Warrants Purchase Agreement
relating to the undersigned’s Private Placement Warrants.



 


		(d)	Notwithstanding the provisions set forth in paragraphs 5(a) and (c), transfers, assignments
and sales by the undersigned of the Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon
the exercise of the Private Placement Warrants or conversion of the Founder Shares are permitted (i) to the Company’s
officers or directors, any affiliates or family members of any of the Company’s officers or directors, to Patient Square
Capital LLC, a Delaware limited liability company (the “Sponsor”), any members or partners of the Sponsor or
its affiliates, any affiliates of the Sponsor, or any employees of such affiliates; (ii) 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 one of the individual’s
immediate family, an affiliate of such person or to a charitable organization; (iii) in the case of an individual, by virtue
of laws of descent and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified
domestic relations order; (v) by private sales or transfers made in connection with the completion of the Business Combination
at prices no greater than the price at which the Founder Shares, Private Placement Warrants or shares of Common Stock, as applicable,
were originally purchased; (vi) by virtue of the Sponsor’s organizational documents upon liquidation or dissolution
of the Sponsor; (vii) to the Company for no value for cancellation in connection with the completion of the Business Combination;
(viii) in the event of the Company’s liquidation prior to the completion of a Business Combination; or (ix) in
the event of completion of a liquidation, merger, share exchange or other similar transaction which results in all of the Company’s
stockholders having the right to exchange their shares of Common Stock for cash, securities or other property subsequent to the
completion of a Business Combination; provided, however, that in the case of clauses (i) through (vi) these permitted
transferees must enter into a written agreement agreeing to be bound by the restrictions herein. For the avoidance of doubt, the
transfers of Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon the exercise of the
Private Placement Warrants or conversion of the Founder Shares shall be permitted regardless of whether a filing under Section 16(a) of
the Exchange Act shall be required or shall be voluntarily made with respect to such transfers.



 






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		(e)	The undersigned acknowledges and agrees that if, in order to complete any Business Combination,
the holders of Founder Shares or Private Placement Warrants are required to contribute back to the capital of the Company a portion
of any such securities to be cancelled by the Company or transfer any such securities to third parties, the undersigned will contribute
back to the capital of the Company or transfer to such third parties, at no cost, a proportionate number of Founder Shares or Private
Placement Warrants, as applicable, pro rata with the other holders of Founder Shares or Private Placement Warrants, as applicable.



 


		6.	[Reserved].



 


		7.	The undersigned agrees to be a director or officer of the Company, as applicable, until the earlier
of the completion by the Company of an initial Business Combination, the liquidation of the Company, or his or her removal, death
or incapacity. In the event of the removal or resignation of the undersigned as a director or officer (as applicable), the undersigned
agrees that he or she will not, prior to the completion of the Business Combination, without the prior express written consent
of the Company, (i) use for the benefit of the undersigned or to the detriment of the Company or (ii) disclose to any
third party (unless required by law or governmental authority), any information regarding a potential target of the Company that
is not generally known by persons outside of the Company, the Sponsor, or their respective affiliates. The undersigned’s
biographical information previously furnished to the Company and the Representatives is true and accurate in all material respects,
does not omit any material information with respect to the undersigned’s background and contains all of the information required
to be disclosed pursuant to Item 401 of Regulation S-K, promulgated under the Securities Act of 1933, as amended. The undersigned’s
FINRA Questionnaire previously furnished to the Company and the Representatives is true and accurate in all material respects.
The undersigned represents and warrants that:



 


		(a)	he or she 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;



 






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		(b)	he or she has never been convicted of or pleaded guilty to any crime (i) involving any fraud
or (ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings
in any securities and he is not currently a defendant in any such criminal proceeding; and



 


		(c)	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.



 


		8.	The undersigned has full right and power, without violating any agreement by which he or she is
bound, to enter into this Letter Agreement and to serve as a director or officer of the Company, as applicable.



 


		9.	The undersigned hereby waives his or her right to exercise redemption rights with respect to any
of the Company’s shares of Common Stock owned or to be owned by the undersigned, directly or indirectly, whether such shares
be part of the Founder Shares or IPO Shares, and agrees that he or she will not seek redemption with respect to such shares (or
sell such shares to the Company in any tender offer) in connection with any stockholder vote to approve (x) a Business Combination
or (y) an amendment to the Charter that would affect the substance or timing of the Company’s obligation to allow redemption
in connection with the Business Combination or to redeem 100% of the shares of Common Stock if the Company has not completed a
Business Combination within 24 months from the closing of the IPO.



 


		10.	The undersigned hereby agrees to not propose any amendment to the Charter that would affect the
substance or timing of the Company’s obligation to provide for the redemption of the shares of Common Stock held by public
stockholders in connection with an initial Business Combination or to redeem 100% of the shares of Common Stock held by public
stockholders if the Company does not complete an initial Business Combination within 24 months from the closing of the IPO unless
the Company provides its public stockholders with the opportunity to redeem their Common Stock 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 earned
on the funds held in the Trust Account and not previously released to the Company to pay taxes, divided by the number of then outstanding
shares of Common Stock held by public stockholders.



 


		11.	This Letter Agreement shall be governed by and construed and enforced in accordance with the laws
of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive
laws of another jurisdiction. The undersigned hereby (i) agrees that any action, proceeding or claim against him arising out
of or relating in any way to this Letter Agreement shall be brought and enforced in the courts of the State of New York of the
United States of America for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive and (ii) waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient
forum.



 






    5


     


    

 


		12.	As used herein, (i) a “Business Combination” shall mean a merger, stock exchange,
asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses
or entities; (ii) “Insiders” shall mean all officers, directors and sponsor of the Company immediately prior to
the IPO; (iii) “Founder Shares” shall mean all of the Class B Common Stock of the Company, par value $0.0001
per share, acquired by an Insider prior to the IPO; (iv) “IPO Shares” shall mean the shares of Common Stock issued
in the Company’s IPO; (v) “Private Placement Warrants” shall mean the warrants that are being sold privately
by the Company simultaneously with the consummation of the IPO; (vi) “Trust Account” shall mean the trust account
into which the net proceeds of the Company’s IPO and a portion of the proceeds from the sale of the Private Placement Warrants
will be deposited; and (vii) “Registration Statement” means the Company’s registration statement on Form S-1
(SEC File No. 333-248802) filed with the SEC, as amended.



 


		13.	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 all parties hereto.



 


		14.	The undersigned acknowledges and understands that the Underwriters and the Company will rely upon
the agreements, representations and warranties set forth herein in proceeding with the IPO. Nothing contained herein shall be deemed
to render any Underwriter a representative of, or a fiduciary with respect to, the Company, its stockholders or any creditor or
vendor of the Company with respect to the subject matter hereof.



 


		15.	This Letter Agreement shall be binding on the undersigned and such person’s respective successors,
heirs, personal representatives and assigns. This Letter Agreement shall terminate on the earlier of (i) the completion of
a Business Combination and (ii) the liquidation of the Company; provided, that such termination shall not relieve the undersigned
from liability for any breach of this agreement prior to its termination. The parties hereto may not assign either this Letter
Agreement or any of their rights, interests, or obligations hereunder without the prior written consent of the other party. 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.



 






    6


     


    

 





	 	Sincerely,
	 	 
	 	 
	 	By:	/s/ James C. Momtazee
	 	Name of Insider: James C. Momtazee


 






    


     


    

 


 


		Acknowledged and Agreed:
	 	 
	 	 
	 	MONTES ARCHIMEDES ACQUISITION CORP.
	 	 
	 	 	 
	 	By:	/s/ Maria C. Walker
	 	Name:	 Maria C. Walker
	 	Title:	 Chief Financial Officer



 


 


Signature Page
to Letter Agreement


 








    


     


    

 









 


October 6, 2020


 


Montes Archimedes Acquisition Corp.

724 Oak Grove, Suite 130

Menlo Park, CA 94025


 


Re:Initial Public
Offering


 


Ladies and Gentlemen:


 


This letter (the “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered
into by and between Montes Archimedes Acquisition Corp., a Delaware corporation (the “Company”) and Citigroup
Global Markets Inc. and Jefferies LLC, as representatives (the “Representatives”) of the several
underwriters named in Schedule A thereto (the “Underwriters”), relating to an underwritten initial public offering
(the “IPO”) of the Company’s units (the “Units”), each unit comprised of one share
of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”), and one-half
of one redeemable warrant, each whole warrant exercisable for one share of Common Stock (each, a “Warrant”).
Certain capitalized terms used herein are defined in paragraph 12 hereof.


 


In order to induce the Company and the
Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the benefit that such
IPO will confer upon the undersigned, and for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned hereby agrees with the Company as follows:


 


		1.	If the Company solicits approval of its stockholders of a Business Combination, the undersigned
will vote all shares of Common Stock beneficially owned by him or her, whether acquired before, in or after the IPO, in favor of
such Business Combination.



 


		2.	In the event that the Company does not complete a Business Combination within the time period set
forth in the Company’s amended and restated certificate of incorporation, as the same may be further amended from time to
time (the “Charter”), the undersigned will, as promptly as possible, take all necessary actions 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 10 business days thereafter, redeem the IPO Shares, at a per-share price, payable in cash, equal to the aggregate amount then
on deposit in the Trust Account, including interest earned on the Trust Account not previously released to the Company to pay its
tax obligations, if any (less up to $100,000 of such net interest to pay dissolution expenses), divided by the number of then outstanding
IPO Shares, which redemption will completely extinguish public stockholders’ rights as stockholders (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 stockholders and the Company’s board of directors, dissolve and
liquidate, subject in the cases of clauses (ii) and (iii) to the Company’s obligations under Delaware law to provide for
claims of creditors and in all cases subject to the other requirements of applicable law. The undersigned hereby waives any and
all right, title, interest or claim of any kind in or to any distribution of the Trust Account and any remaining net assets of
the Company as a result of such liquidation with respect to the Founder Shares owned by the undersigned. However, if any of the
undersigned have acquired IPO Shares in or after the IPO, they will be entitled to liquidating distributions from the Trust Account
with respect to such IPO Shares in the event that the Company does not complete a Business Combination within the time period set
forth in the Charter. The undersigned acknowledges and agrees that there will be no distribution from the Trust Account with respect
to any Warrants, all rights of which will terminate on the Company’s liquidation.



 






    


     


    

 


		3.	The undersigned acknowledges and agrees that prior to entering into a definitive agreement for
a Business Combination with a target business that is affiliated with the undersigned or any other Insiders of the Company or their
affiliates, such transaction must be approved by a majority of the Company’s disinterested independent directors and the
Company must obtain an opinion from an independent investment banking firm, which is a member of the Financial Industry Regulatory
Authority, or an independent accounting firm that such Business Combination is fair to the Company’s unaffiliated stockholders
from a financial point of view.



 


		4.	None of the undersigned, any member of the family of any of the undersigned, or any affiliate of
the undersigned will be entitled to receive and will not accept any compensation or other cash payment from the Company prior to,
or for services rendered in order to effectuate, the completion of the Business Combination; provided that the Company shall be
allowed to make the payments set forth in the Registration Statement adjacent to the caption “Prospectus Summary—The
Offering—Limited payments to insiders.”



 


		5.	(a)The undersigned agrees that the Founder Shares may not be transferred, assigned or sold
(except to certain permitted transferees as described in the Registration Statement or herein) (the “Lockup”)
until the earlier to occur of: (1) one year after the completion of a Business Combination or (2) the date following the completion
of the Company’s initial Business Combination on which the Company completes a liquidation, merger, stock exchange or other
similar transaction that results in all of the Company’s stockholders having the right to exchange their shares of Common
Stock for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Company’s Common
Stock equals or exceeds $12.00 per share (as adjusted for share splits, share capitalizations, reorganizations, recapitalizations
and the like) 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 will be released from the Lockup.



 


		(b)	Notwithstanding the provisions set forth in paragraphs 5(a) and 5(c), during the period commencing
on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned will not, without the
prior written consent of the Representatives pursuant to the Underwriting Agreement, (i) sell, offer to sell, contract or agree
to sell, hypothecate, pledge, hedge or otherwise dispose of or agree to dispose of (or enter into any transaction that is designed
to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic disposition
due to cash settlement or otherwise) by the undersigned or any affiliate of the undersigned or any person in privity with the undersigned
or any affiliate of the undersigned), directly or indirectly, including the filing (or participation in the filing) of a registration
statement with the Securities and Exchange Commission (the “SEC”) in respect of, or establish or increase a
put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities
Exchange Act of 1934, as amended, (the “Exchange Act”) and the rules and regulations of the SEC promulgated
thereunder with respect to, any other Units, shares of Common Stock, Founder Shares or Warrants or any securities convertible into,
or exercisable, or exchangeable for, shares of Common Stock owned by it, him or her, (ii) enter into any swap or other arrangement
that transfers to another, in whole or in part, any of the economic consequences of ownership of any Units, shares of Common Stock,
Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable for, shares of Common Stock owned
by it, him or her, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (iii)
publicly announce any intention to effect any transaction, including the filing of a registration statement, specified in clause
(i) or (ii). The provisions of this paragraph will not apply (i) to the transfer of Founder Shares to any independent director
appointed or elected to the Company’s board of directors before or after the IPO or (ii) if the release or waiver is effected
solely to permit a transfer not for consideration and, in each case 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.



 






    2


     


    

 


		(c)	The undersigned agrees that until the Company completes an initial Business Combination, the undersigned’s
Private Placement Warrants will be subject to the transfer restrictions described in the Private Placement Warrants Purchase Agreement
relating to the undersigned’s Private Placement Warrants.



 


		(d)	Notwithstanding the provisions set forth in paragraphs 5(a) and (c), transfers, assignments and
sales by the undersigned of the Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon the
exercise of the Private Placement Warrants or conversion of the Founder Shares are permitted (i) to the Company’s officers
or directors, any affiliates or family members of any of the Company’s officers or directors, to Patient Square Capital LLC,
a Delaware limited liability company (the “Sponsor”), any members or partners of the Sponsor or its affiliates,
any affiliates of the Sponsor, or any employees of such affiliates; (ii) 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 one of the individual’s immediate
family, an affiliate of such person or to a charitable organization; (iii) in the case of an individual, by virtue of laws of descent
and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified domestic relations order;
(v) by private sales or transfers made in connection with the completion of the Business Combination at prices no greater than
the price at which the Founder Shares, Private Placement Warrants or shares of Common Stock, as applicable, were originally purchased;
(vi) by virtue of the Sponsor’s organizational documents upon liquidation or dissolution of the Sponsor; (vii) to the Company
for no value for cancellation in connection with the completion of the Business Combination; (viii) in the event of the Company’s
liquidation prior to the completion of a Business Combination; or (ix) in the event of completion of a liquidation, merger, share
exchange or other similar transaction which results in all of the Company’s stockholders having the right to exchange their
shares of Common Stock for cash, securities or other property subsequent to the completion of a Business Combination; provided,
however, that in the case of clauses (i) through (vi) these permitted transferees must enter into a written agreement agreeing
to be bound by the restrictions herein. For the avoidance of doubt, the transfers of Founder Shares, Private Placement Warrants
and shares of Common Stock issued or issuable upon the exercise of the Private Placement Warrants or conversion of the Founder
Shares shall be permitted regardless of whether a filing under Section 16(a) of the Exchange Act shall be required or shall be
voluntarily made with respect to such transfers.



 






    3


     


    

 


		(e)	The undersigned acknowledges and agrees that if, in order to complete any Business Combination,
the holders of Founder Shares or Private Placement Warrants are required to contribute back to the capital of the Company a portion
of any such securities to be cancelled by the Company or transfer any such securities to third parties, the undersigned will contribute
back to the capital of the Company or transfer to such third parties, at no cost, a proportionate number of Founder Shares or Private
Placement Warrants, as applicable, pro rata with the other holders of Founder Shares or Private Placement Warrants, as applicable.



 


		6.	[Reserved].



 


		7.	The undersigned agrees to be a director or officer of the Company, as applicable, until the earlier
of the completion by the Company of an initial Business Combination, the liquidation of the Company, or his or her removal, death
or incapacity. In the event of the removal or resignation of the undersigned as a director or officer (as applicable), the undersigned
agrees that he or she will not, prior to the completion of the Business Combination, without the prior express written consent
of the Company, (i) use for the benefit of the undersigned or to the detriment of the Company or (ii) disclose to any third party
(unless required by law or governmental authority), any information regarding a potential target of the Company that is not generally
known by persons outside of the Company, the Sponsor, or their respective affiliates. The undersigned’s biographical information
previously furnished to the Company and the Representatives is true and accurate in all material respects, does not omit any material
information with respect to the undersigned’s background and contains all of the information required to be disclosed pursuant
to Item 401 of Regulation S-K, promulgated under the Securities Act of 1933, as amended. The undersigned’s FINRA Questionnaire
previously furnished to the Company and the Representatives is true and accurate in all material respects. The undersigned represents
and warrants that:



 


		(a)	he or she 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;



 






    4


     


    

 


		(b)	he or she has never been convicted of or pleaded guilty to any crime (i) involving any fraud or
(ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings in any securities
and he is not currently a defendant in any such criminal proceeding; and



 


		(c)	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.



 


		8.	The undersigned has full right and power, without violating any agreement by which he or she is
bound, to enter into this Letter Agreement and to serve as a director or officer of the Company, as applicable.



 


		9.	The undersigned hereby waives his or her right to exercise redemption rights with respect to any
of the Company’s shares of Common Stock owned or to be owned by the undersigned, directly or indirectly, whether such shares
be part of the Founder Shares or IPO Shares, and agrees that he or she will not seek redemption with respect to such shares (or
sell such shares to the Company in any tender offer) in connection with any stockholder vote to approve (x) a Business Combination
or (y) an amendment to the Charter that would affect the substance or timing of the Company’s obligation to allow redemption
in connection with the Business Combination or to redeem 100% of the shares of Common Stock if the Company has not completed a
Business Combination within 24 months from the closing of the IPO.



 


		10.	The undersigned hereby agrees to not propose any amendment to the Charter that would affect the
substance or timing of the Company’s obligation to provide for the redemption of the shares of Common Stock held by public
stockholders in connection with an initial Business Combination or to redeem 100% of the shares of Common Stock held by public
stockholders if the Company does not complete an initial Business Combination within 24 months from the closing of the IPO unless
the Company provides its public stockholders with the opportunity to redeem their Common Stock 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 earned
on the funds held in the Trust Account and not previously released to the Company to pay taxes, divided by the number of then outstanding
shares of Common Stock held by public stockholders.



 


		11.	This Letter Agreement shall be governed by and construed and enforced in accordance with the laws
of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive
laws of another jurisdiction. The undersigned hereby (i) agrees that any action, proceeding or claim against him arising out of
or relating in any way to this Letter Agreement shall be brought and enforced in the courts of the State of New York of the United
States of America for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall
be exclusive and (ii) waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum.



 






    5


     


    

 


		12.	As used herein, (i) a “Business Combination” shall mean a merger, stock exchange, asset
acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses
or entities; (ii) “Insiders” shall mean all officers, directors and sponsor of the Company immediately prior to the
IPO; (iii) “Founder Shares” shall mean all of the Class B Common Stock of the Company, par value $0.0001 per share,
acquired by an Insider prior to the IPO; (iv) “IPO Shares” shall mean the shares of Common Stock issued in the Company’s
IPO; (v) “Private Placement Warrants” shall mean the warrants that are being sold privately by the Company simultaneously
with the consummation of the IPO; (vi) “Trust Account” shall mean the trust account into which the net proceeds of
the Company’s IPO and a portion of the proceeds from the sale of the Private Placement Warrants will be deposited; and (vii)
 “Registration Statement” means the Company’s registration statement on Form S-1 (SEC File No. 333-248802) filed
with the SEC, as amended.



 


		13.	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 all parties hereto.



 


		14.	The undersigned acknowledges and understands that the Underwriters and the Company will rely upon
the agreements, representations and warranties set forth herein in proceeding with the IPO. Nothing contained herein shall be deemed
to render any Underwriter a representative of, or a fiduciary with respect to, the Company, its stockholders or any creditor or
vendor of the Company with respect to the subject matter hereof.



 


		15.	This Letter Agreement shall be binding on the undersigned and such person’s respective successors,
heirs, personal representatives and assigns. This Letter Agreement shall terminate on the earlier of (i) the completion of a Business
Combination and (ii) the liquidation of the Company; provided, that such termination shall not relieve the undersigned from liability
for any breach of this agreement prior to its termination. The parties hereto may not assign either this Letter Agreement or any
of their rights, interests, or obligations hereunder without the prior written consent of the other party. 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.



 






    6


     


    

 


 


	 	Sincerely,
	 	 	 
	 	 	 
	 	By:	 /s/ Maria C. Walker
	 	Name of Insider: Maria C. Walker



 






    


     


    

 


	 	Acknowledged and Agreed:
	 	 	 
	 	 	 
	 	MONTES ARCHIMEDES ACQUISITION CORP.
	 	 	 
	 	 	 
	 	By: 	/s/ Maria C. Walker
	 	Name: 	Maria C. Walker
	 	Title:	Chief Financial Officer



 


Signature Page to Letter Agreement


 






    


     


    

 





October 6, 2020


 


Montes Archimedes Acquisition Corp.

724 Oak Grove, Suite 130

Menlo Park, CA 94025


 


Re:     Initial
Public Offering


 


Ladies and Gentlemen:


 


This letter (the “Letter Agreement”)
is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered
into by and between Montes Archimedes Acquisition Corp., a Delaware corporation (the “Company”) and Citigroup
Global Markets Inc. and Jefferies LLC, as representatives (the “Representatives”) of the several
underwriters named in Schedule A thereto (the “Underwriters”), relating to an underwritten initial public offering
(the “IPO”) of the Company’s units (the “Units”), each unit comprised of one share
of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”), and one-half
of one redeemable warrant, each whole warrant exercisable for one share of Common Stock (each, a “Warrant”).
Certain capitalized terms used herein are defined in paragraph 12 hereof.


 


In order to induce the Company and the
Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the benefit that such
IPO will confer upon the undersigned, and for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the undersigned hereby agrees with the Company as follows:


 


		1.	If the Company solicits approval of its stockholders of a Business Combination, the undersigned
will vote all shares of Common Stock beneficially owned by him or her, whether acquired before, in or after the IPO, in favor of
such Business Combination.



 


		2.	In the event that the Company does not complete a Business Combination within the time period set
forth in the Company’s amended and restated certificate of incorporation, as the same may be further amended from time to
time (the “Charter”), the undersigned will, as promptly as possible, take all necessary actions 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 10 business days thereafter, redeem the IPO Shares, at a per-share price, payable in cash, equal to the aggregate
amount then on deposit in the Trust Account, including interest earned on the Trust Account not previously released to the Company
to pay its tax obligations, if any (less up to $100,000 of such net interest to pay dissolution expenses), divided by the number
of then outstanding IPO Shares, which redemption will completely extinguish public stockholders’ rights as stockholders (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 stockholders and the Company’s board of directors, dissolve
and liquidate, subject in the cases of clauses (ii) and (iii) to the Company’s obligations under Delaware law to
provide for claims of creditors and in all cases subject to the other requirements of applicable law. The undersigned hereby waives
any and all right, title, interest or claim of any kind in or to any distribution of the Trust Account and any remaining net assets
of the Company as a result of such liquidation with respect to the Founder Shares owned by the undersigned. However, if any of
the undersigned have acquired IPO Shares in or after the IPO, they will be entitled to liquidating distributions from the Trust
Account with respect to such IPO Shares in the event that the Company does not complete a Business Combination within the time
period set forth in the Charter. The undersigned acknowledges and agrees that there will be no distribution from the Trust Account
with respect to any Warrants, all rights of which will terminate on the Company’s liquidation.



 






    	 		 



     


    

 


		3.	The undersigned acknowledges and agrees that prior to entering into a definitive agreement for
a Business Combination with a target business that is affiliated with the undersigned or any other Insiders of the Company or their
affiliates, such transaction must be approved by a majority of the Company’s disinterested independent directors and the
Company must obtain an opinion from an independent investment banking firm, which is a member of the Financial Industry Regulatory
Authority, or an independent accounting firm that such Business Combination is fair to the Company’s unaffiliated stockholders
from a financial point of view.



 


		4.	None of the undersigned, any member of the family of any of the undersigned, or any affiliate of
the undersigned will be entitled to receive and will not accept any compensation or other cash payment from the Company prior to,
or for services rendered in order to effectuate, the completion of the Business Combination; provided that the Company shall be
allowed to make the payments set forth in the Registration Statement adjacent to the caption “Prospectus Summary—The
Offering—Limited payments to insiders.”



 


		5.	(a)The undersigned agrees that the Founder Shares may not be transferred, assigned or sold
(except to certain permitted transferees as described in the Registration Statement or herein) (the “Lockup”)
until the earlier to occur of: (1) one year after the completion of a Business Combination or (2) the date following
the completion of the Company’s initial Business Combination on which the Company completes a liquidation, merger, stock
exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange their
shares of Common Stock for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Company’s
Common Stock equals or exceeds $12.00 per share (as adjusted for share splits, share capitalizations, reorganizations, recapitalizations
and the like) 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 will be released from the Lockup.



 


		(b)	Notwithstanding the provisions set forth in paragraphs 5(a) and 5(c), during the period commencing
on the effective date of the Underwriting Agreement and ending 180 days after such date, the undersigned will not, without the
prior written consent of the Representatives pursuant to the Underwriting Agreement, (i) sell, offer to sell, contract or
agree to sell, hypothecate, pledge, hedge or otherwise dispose of or agree to dispose of (or enter into any transaction that is
designed to, or might reasonably be expected to, result in the disposition (whether by actual disposition or effective economic
disposition due to cash settlement or otherwise) by the undersigned or any affiliate of the undersigned or any person in privity
with the undersigned or any affiliate of the undersigned), directly or indirectly, including the filing (or participation in the
filing) of a registration statement with the Securities and Exchange Commission (the “SEC”) in respect of, or
establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16
of the Securities Exchange Act of 1934, as amended, (the “Exchange Act”) and the rules and regulations
of the SEC promulgated thereunder with respect to, any other Units, shares of Common Stock, Founder Shares or Warrants or any securities
convertible into, or exercisable, or exchangeable for, shares of Common Stock owned by it, him or her, (ii) enter into any
swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any
Units, shares of Common Stock, Founder Shares, Warrants or any securities convertible into, or exercisable, or exchangeable for,
shares of Common Stock owned by it, him or her, whether any such transaction is to be settled by delivery of such securities, in
cash or otherwise, or (iii) publicly announce any intention to effect any transaction, including the filing of a registration
statement, specified in clause (i) or (ii). The provisions of this paragraph will not apply (i) to the transfer of Founder
Shares to any independent director appointed or elected to the Company’s board of directors before or after the IPO or (ii) if
the release or waiver is effected solely to permit a transfer not for consideration and, in each case 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.



 






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		(c)	The undersigned agrees that until the Company completes an initial Business Combination, the undersigned’s
Private Placement Warrants will be subject to the transfer restrictions described in the Private Placement Warrants Purchase Agreement
relating to the undersigned’s Private Placement Warrants.



 


		(d)	Notwithstanding the provisions set forth in paragraphs 5(a) and (c), transfers, assignments
and sales by the undersigned of the Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon
the exercise of the Private Placement Warrants or conversion of the Founder Shares are permitted (i) to the Company’s
officers or directors, any affiliates or family members of any of the Company’s officers or directors, to Patient Square
Capital LLC, a Delaware limited liability company (the “Sponsor”), any members or partners of the Sponsor or
its affiliates, any affiliates of the Sponsor, or any employees of such affiliates; (ii) 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 one of the individual’s
immediate family, an affiliate of such person or to a charitable organization; (iii) in the case of an individual, by virtue
of laws of descent and distribution upon death of the individual; (iv) in the case of an individual, pursuant to a qualified
domestic relations order; (v) by private sales or transfers made in connection with the completion of the Business Combination
at prices no greater than the price at which the Founder Shares, Private Placement Warrants or shares of Common Stock, as applicable,
were originally purchased; (vi) by virtue of the Sponsor’s organizational documents upon liquidation or dissolution
of the Sponsor; (vii) to the Company for no value for cancellation in connection with the completion of the Business Combination;
(viii) in the event of the Company’s liquidation prior to the completion of a Business Combination; or (ix) in
the event of completion of a liquidation, merger, share exchange or other similar transaction which results in all of the Company’s
stockholders having the right to exchange their shares of Common Stock for cash, securities or other property subsequent to the
completion of a Business Combination; provided, however, that in the case of clauses (i) through (vi) these permitted
transferees must enter into a written agreement agreeing to be bound by the restrictions herein. For the avoidance of doubt, the
transfers of Founder Shares, Private Placement Warrants and shares of Common Stock issued or issuable upon the exercise of the
Private Placement Warrants or conversion of the Founder Shares shall be permitted regardless of whether a filing under Section 16(a) of
the Exchange Act shall be required or shall be voluntarily made with respect to such transfers.



 






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		(e)	The undersigned acknowledges and agrees that if, in order to complete any Business Combination,
the holders of Founder Shares or Private Placement Warrants are required to contribute back to the capital of the Company a portion
of any such securities to be cancelled by the Company or transfer any such securities to third parties, the undersigned will contribute
back to the capital of the Company or transfer to such third parties, at no cost, a proportionate number of Founder Shares or Private
Placement Warrants, as applicable, pro rata with the other holders of Founder Shares or Private Placement Warrants, as applicable.



 


		6.	[Reserved].



 


		7.	The undersigned agrees to be a director or officer of the Company, as applicable, until the earlier
of the completion by the Company of an initial Business Combination, the liquidation of the Company, or his or her removal, death
or incapacity. In the event of the removal or resignation of the undersigned as a director or officer (as applicable), the undersigned
agrees that he or she will not, prior to the completion of the Business Combination, without the prior express written consent
of the Company, (i) use for the benefit of the undersigned or to the detriment of the Company or (ii) disclose to any
third party (unless required by law or governmental authority), any information regarding a potential target of the Company that
is not generally known by persons outside of the Company, the Sponsor, or their respective affiliates. The undersigned’s
biographical information previously furnished to the Company and the Representatives is true and accurate in all material respects,
does not omit any material information with respect to the undersigned’s background and contains all of the information required
to be disclosed pursuant to Item 401 of Regulation S-K, promulgated under the Securities Act of 1933, as amended. The undersigned’s
FINRA Questionnaire previously furnished to the Company and the Representatives is true and accurate in all material respects.
The undersigned represents and warrants that:



 


		(a)	he or she 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;



 






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		(b)	he or she has never been convicted of or pleaded guilty to any crime (i) involving any fraud
or (ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings
in any securities and he is not currently a defendant in any such criminal proceeding; and



 


		(c)	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.



 


		8.	The undersigned has full right and power, without violating any agreement by which he or she is
bound, to enter into this Letter Agreement and to serve as a director or officer of the Company, as applicable.



 


		9.	The undersigned hereby waives his or her right to exercise redemption rights with respect to any
of the Company’s shares of Common Stock owned or to be owned by the undersigned, directly or indirectly, whether such shares
be part of the Founder Shares or IPO Shares, and agrees that he or she will not seek redemption with respect to such shares (or
sell such shares to the Company in any tender offer) in connection with any stockholder vote to approve (x) a Business Combination
or (y) an amendment to the Charter that would affect the substance or timing of the Company’s obligation to allow redemption
in connection with the Business Combination or to redeem 100% of the shares of Common Stock if the Company has not completed a
Business Combination within 24 months from the closing of the IPO.



 


		10.	The undersigned hereby agrees to not propose any amendment to the Charter that would affect the
substance or timing of the Company’s obligation to provide for the redemption of the shares of Common Stock held by public
stockholders in connection with an initial Business Combination or to redeem 100% of the shares of Common Stock held by public
stockholders if the Company does not complete an initial Business Combination within 24 months from the closing of the IPO unless
the Company provides its public stockholders with the opportunity to redeem their Common Stock 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 earned
on the funds held in the Trust Account and not previously released to the Company to pay taxes, divided by the number of then outstanding
shares of Common Stock held by public stockholders.



 


		11.	This Letter Agreement shall be governed by and construed and enforced in accordance with the laws
of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive
laws of another jurisdiction. The undersigned hereby (i) agrees that any action, proceeding or claim against him arising out
of or relating in any way to this Letter Agreement shall be brought and enforced in the courts of the State of New York of the
United States of America for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive and (ii) waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient
forum.



 






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		12.	As used herein, (i) a “Business Combination” shall mean a merger, stock exchange,
asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses
or entities; (ii) “Insiders” shall mean all officers, directors and sponsor of the Company immediately prior to
the IPO; (iii) “Founder Shares” shall mean all of the Class B Common Stock of the Company, par value $0.0001
per share, acquired by an Insider prior to the IPO; (iv) “IPO Shares” shall mean the shares of Common Stock issued
in the Company’s IPO; (v) “Private Placement Warrants” shall mean the warrants that are being sold privately
by the Company simultaneously with the consummation of the IPO; (vi) “Trust Account” shall mean the trust account
into which the net proceeds of the Company’s IPO and a portion of the proceeds from the sale of the Private Placement Warrants
will be deposited; and (vii) “Registration Statement” means the Company’s registration statement on Form S-1
(SEC File No. 333-248802) filed with the SEC, as amended.



 


		13.	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 all parties hereto.



 


		14.	The undersigned acknowledges and understands that the Underwriters and the Company will rely upon
the agreements, representations and warranties set forth herein in proceeding with the IPO. Nothing contained herein shall be deemed
to render any Underwriter a representative of, or a fiduciary with respect to, the Company, its stockholders or any creditor or
vendor of the Company with respect to the subject matter hereof.



 


		15.	This Letter Agreement shall be binding on the undersigned and such person’s respective successors,
heirs, personal representatives and assigns. This Letter Agreement shall terminate on the earlier of (i) the completion of
a Business Combination and (ii) the liquidation of the Company; provided, that such termination shall not relieve the undersigned
from liability for any breach of this agreement prior to its termination. The parties hereto may not assign either this Letter
Agreement or any of their rights, interests, or obligations hereunder without the prior written consent of the other party. 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.



 






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		Sincerely,
	 	 	 
	 	 	 
	 	By:	/s/ Stephen Oesterle
	 	Name of Insider: Stephen Oesterle


 






    	 		 



     


    

 





	 	Acknowledged and Agreed:
	 	 	 
	 	 	 
	 	MONTES ARCHIMEDES ACQUISITION CORP.
	 	 	 
	 	 	 
	 	By:	 /s/ Maria C. Walker
	 	Name: 	Maria C. Walker
	 	Title:	 Chief Financial Officer


 


Signature Page to Letter Agreement