Exhibit 10.7


 


FS Development Corp. III

600 Montgomery Street, Suite 4500


San Francisco, CA 94111


 


January 29, 2021


FS Development Holdings III, LLC


600 Montgomery Street, Suite 4500


San Francisco, CA 94111


 


RE: Securities Subscription Agreement 


 


Ladies and Gentlemen:


 


FS Development Corp. III,
a Delaware corporation (the “Company”, “we” or “us”), is pleased to accept the
offer made by FS Development Holdings III, LLC, a Delaware limited liability company (“Subscriber” or “you”),
to purchase 7,187,500 shares (the “Shares”) of Class B common stock of the Company, par value $0.0001 per share, up
to 937,500 of which are subject to forfeiture by you to the extent that the underwriters of the initial public offering (“IPO”)
of the Company’s Class A common stock, par value $0.0001 per share (“Common Stock”), do not fully exercise their
option to purchase additional shares of Common Stock to cover over-allotments, if any (the “Over-allotment Option”).
The terms of the sale by the Company of the Shares to Subscriber, and the Company and Subscriber’s agreements regarding the Shares,
are as follows:


 


1. Purchase
of Securities.


 


1.1. Purchase
of Shares. For the sum of $25,000 (the “Purchase Price”), which the Company acknowledges the Subscriber paid on
behalf of the Company to cover certain offering costs, the Company hereby issues the Shares to Subscriber, and Subscriber hereby purchases
the Shares from the Company, on the terms and subject to the conditions, including regarding forfeiture, set forth in this letter agreement
(this “Agreement”). Concurrently with Subscriber’s execution of this Agreement,
the Company shall, at its option, deliver to Subscriber a certificate registered in Subscriber’s name representing the shares (the
“Original Certificate”) or effect such delivery in book-entry form.


 


2. Representations,
Warranties and Agreements.


 


2.1. Subscriber’s
Representations, Warranties and Agreements. To induce the Company to issue the Shares to Subscriber, Subscriber hereby represents
and warrants to the Company and agrees with the Company as follows:


 


2.1.1. Organization
and Authority. Subscriber is a limited liability company, duly organized, validly existing and in good standing under the laws of
State of Delaware, and possesses all requisite power and authority necessary to carry out the transactions contemplated by this Agreement.
This Agreement is a legal, valid and binding agreement of Subscriber, enforceable against Subscriber in accordance with its terms, except
as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance or similar laws affecting the enforcement
of creditors’ rights generally and subject to general principles of equity (regardless of whether enforcement is sought in a proceeding
at law or in equity).


 






     


     


    

 


2.1.2. No
Conflicts. The execution, delivery and performance of this Agreement and the consummation by Subscriber of the transactions contemplated
hereby do not violate, conflict with or constitute a default under (i) the formation and governing documents of Subscriber, (ii) any agreement,
indenture or instrument to which Subscriber is a party or (iii) any law, statute, rule, regulation, order, judgment or decree to which
Subscriber is subject.


2.1.3. No
Governmental Consents. No governmental, administrative or other third party consents or approvals are required, necessary or appropriate
on the part of Subscriber in connection with the transactions contemplated by this Agreement.


 


2.1.4. Experience,
Financial Capability and Suitability. Subscriber is sophisticated in financial matters and is able to evaluate the risks and benefits
of the investment in the Shares. Subscriber acknowledges that the Shares have not been registered under the Securities Act of 1933, as
amended (the “Securities Act”), and therefore cannot be sold unless subsequently registered under the Securities Act
or an exemption from such registration is available. Subscriber understands that it must bear the economic risk of this investment until
the Shares are sold pursuant to: (i) an effective registration statement under the Securities Act or (ii) an exemption from registration
available with respect to such sale. Subscriber is able to bear the economic risk of an investment in the Shares for an indefinite period
of time and to afford a complete loss of Subscriber’s investment in the Shares.


 


2.1.5. No
Government Recommendation or Approval. Subscriber understands that no federal or state agency has passed upon or made any recommendation
or endorsement of the offering of the Shares.


 


2.1.6. Access
to Information; Independent Investigation. Prior to the execution of this Agreement, Subscriber has had the opportunity to ask questions
of and receive answers from representatives of the Company concerning an investment in the Company, as well as the financial condition,
business and prospects of the Company, and the opportunity to obtain additional information to verify the accuracy of all information
so obtained. In determining whether to make this investment, Subscriber has relied solely on Subscriber’s own knowledge and understanding
of the Company and its business based upon Subscriber’s own due diligence investigation. Subscriber understands that no person has
been authorized to make any representations other than as set forth in this Agreement and Subscriber has not relied on any other written
or oral representations relating to the financial condition, business and prospects of the Company in making its investment decision.


 


2.1.7. Investment
Representations. Subscriber represents that it is an “accredited investor” as such term is defined in Rule 501(a) of Regulation
D under the Securities Act and acknowledges the sale contemplated hereby is being made in reliance on the private placement exemption
in Section 4(a)(2) of the Securities Act and/or said Regulation D and similar exemptions under state law. Subscriber is purchasing the
Shares solely for investment purposes, for Subscriber’s own account and not for the account or benefit of any other person, and
not with a view towards the distribution or dissemination thereof. Subscriber did not decide to enter into this Agreement as a result
of any general solicitation or general advertising within the meaning of Rule 502 under the Securities Act.


 






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2.1.8. Restrictions
on Transfer; Shell Company. Subscriber understands the Shares are being offered in a transaction not involving a public offering within
the meaning of the Securities Act. Subscriber understands the Shares will be “restricted securities” within the meaning of
Rule 144(a)(3) under the Securities Act, and Subscriber understands that the certificates or book-entries representing the Shares will
contain a legend or notation in respect of such restrictions. If, in the future, Subscriber decides to offer, resell, pledge or otherwise
transfer the Shares, such Shares may be offered, resold, pledged or otherwise transferred only pursuant to: (i) an effective registration
statement under the Securities Act or (ii) an exemption from registration available with respect to such sale. Subscriber agrees that
if any transfer of its Shares or any interest therein is proposed to be made, as a condition precedent to any such transfer, Subscriber
may be required to deliver to the Company an opinion of counsel satisfactory to the Company. Absent registration or available exemption,
Subscriber agrees not to resell the Shares. Subscriber further acknowledges that because the Company is a shell company, Rule 144 may
not be available to Subscriber for the resale of the Shares until one year following consummation of the initial business combination
of the Company, despite the release or waiver of any contractual transfer restrictions.


 


2.2. Company’s
Representations, Warranties and Agreements. To induce Subscriber to purchase the Shares, the Company hereby represents and warrants
to Subscriber and agrees with Subscriber as follows:


 


2.2.1. Organization
and Authority. The Company is a corporation, duly organized, validly existing and in good standing under the laws of the State of
Delaware, and possesses all requisite power and authority necessary to carry out the transactions contemplated by this Agreement. This
Agreement is a legal, valid and binding agreement of the Company, enforceable against the Company in accordance with its terms, except
as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance or similar laws affecting the enforcement
of creditors’ rights generally and subject to general principles of equity (regardless of whether enforcement is sought in a proceeding
at law or in equity).


 


2.2.2. No
Conflicts. The execution, delivery and performance of this Agreement and the consummation by the Company of the transactions contemplated
hereby do not violate, conflict with or constitute a default under (i) the formation and governing documents of the Company, (ii) any
agreement, indenture or instrument to which the Company is a party or (iii) any law, statute, rule, regulation, order, judgment or decree
to which the Company is subject.


 






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2.2.3. No
Governmental Consents. No governmental, administrative or other third party consents or approvals are required, necessary or appropriate
on the part of the Company in connection with the transactions contemplated by this Agreement.











 


2.2.4. Title
to Securities. Upon issuance in accordance with, and payment pursuant to, the terms hereof, the Shares will be duly and validly issued,
fully paid and nonassessable. Upon issuance in accordance with, and payment pursuant to, the terms hereof, Subscriber will have or receive
good title to the Shares, free and clear of all liens, claims and encumbrances of any kind, other than (a) transfer restrictions hereunder
and other agreements to which the Shares may become subject, (b) transfer restrictions under federal and state securities laws, and (c)
liens, claims or encumbrances imposed due to the actions of Subscriber.


 


3. Forfeiture
of Shares.


 


3.1. Partial
or No Exercise of the Over-allotment Option. In the event the Over-allotment Option is not exercised in full, Subscriber acknowledges
and agrees that it (or, if applicable, it and/or any transferees of Shares) shall forfeit any and all rights to such number of Shares
(up to an aggregate of 937,500 Shares (as such amount may be adjusted for share splits, share dividends, reorganizations, recapitalizations
and the like) and pro rata based upon the percentage of the Over-allotment Option exercised) such that immediately following such forfeiture,
Subscriber (and all other initial stockholders of the Company prior to the IPO, if any) will own an aggregate number of Shares equal to
20% of the issued and outstanding Shares immediately following the IPO.


 


3.2. Termination
of Rights as Stockholder. If any of the Shares are forfeited in accordance with this Section 3, then after such time Subscriber (or
its successor in interest), shall no longer have any rights as a holder of such forfeited Shares, and the Company shall take such action
as is appropriate to cancel such forfeited Shares.


 


3.3. Share
Certificates. In the event an adjustment to the Original Certificates, if any, is required pursuant
to this Section 3, then Subscriber shall return such Original Certificates to the Company or its designated agent as soon as practicable
upon its receipt of notice from the Company advising Subscriber of such adjustment, following which a new certificate (the “New
Certificate”), if any, shall be issued in such amount representing the adjusted number of Shares held by Subscriber. The New
Certificate, if any, shall be returned to Subscriber as soon as practicable. Any such adjustment for any uncertificated securities held
by Subscriber shall be made in book-entry form.


 


4. Waiver
of Redemption Rights. Subscriber hereby waives any and all rights to redeem the Shares for a portion of the amounts held in the trust
account into which substantially all of the proceeds of the IPO will be deposited (the “Trust Account”) in the event
of the Company’s failure to timely complete an initial business combination, an extension of the time period to complete an initial
business combination or upon the consummation of an initial business combination. For purposes of clarity, in the event Subscriber purchases
shares of Common Stock issued in the IPO (“Public Shares”), either in the IPO or in the aftermarket, any Public Shares
so purchased shall be eligible to be redeemed for a portion of the amounts held in the Trust Account in the event of the Company’s
failure to timely complete an initial business combination (but, for the avoidance of doubt, not in connection with an extension of the
time period to complete an initial business combination or upon the consummation of an initial business combination).


 






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5. Restrictions
on Transfer.


 


5.1. Securities
Law Restrictions. In addition to any restrictions to be contained in that certain letter agreement
(commonly known as an “Insider Letter”) to be dated as of the closing of the IPO by and between Subscriber and the
Company (which will also contain other agreements with respect to the Shares), Subscriber agrees not to sell, transfer, pledge, hypothecate
or otherwise dispose of all or any part of the Shares unless, prior thereto, (a) a registration statement on the appropriate form under
the Securities Act and applicable state securities laws with respect to the Shares proposed to be transferred shall then be effective
or (b) the Company has received an opinion from counsel, reasonably satisfactory to the Company, that registration is not required because
such transaction is exempt from registration under the Securities Act and the rules promulgated by the Securities and Exchange Commission
thereunder and all applicable state securities laws.


 


5.2. Restrictive
Legends. Any certificates representing the Shares shall have endorsed thereon legends substantially as follows (and any book-entries
representing the Shares shall have similar notations):


 


“THE SECURITIES REPRESENTED HEREBY HAVE
NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS AND NEITHER THE SECURITIES NOR ANY INTEREST
THEREIN MAY BE OFFERED, SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER SUCH ACT OR SUCH LAWS OR AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT AND SUCH LAWS WHICH, IN THE OPINION OF COUNSEL,
IS AVAILABLE.”


 


“THE SECURITIES REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER SET FORTH IN A LETTER AGREEMENT WITH THE COMPANY (A COPY OF WHICH MAY BE
OBTAINED FROM THE COMPANY AT THE COMPANY’S PRINCIPAL PLACE OF BUSINESS WITHOUT CHARGE) AND MAY NOT BE OFFERED, SOLD, TRANSFERRED,
PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF IN VIOLATION OF SUCH RESTRICTIONS.”


 






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5.3. Additional
Shares or Substituted Securities. In the event of the declaration of a share dividend, the declaration of an extraordinary dividend
payable in a form other than Shares, a spin-off, a share split, an adjustment in conversion ratio, a recapitalization or a similar transaction
affecting the Company’s outstanding Shares without receipt of consideration, any new, substituted or additional securities or other
property which are by reason of such transaction distributed with respect to any Shares subject to this Section 5 or into which such Shares
thereby become convertible shall immediately be subject to this Section 5 and Section 3 hereof. Appropriate adjustments to reflect the
distribution of such securities or property shall be made to the number and/or class of Shares subject to this Section 5 and Section 3.


 


6. Other
Agreements.


 


6.1. Further
Assurances. Subscriber agrees to execute such further instruments and to take such further action as may reasonably be necessary to
carry out the intent of this Agreement.


 


6.2. Notices.
All notices, statements or other documents which are required or contemplated by this Agreement shall be in writing and delivered (i)
personally or by certified mail (return receipt requested) or overnight courier service or (ii) by electronic mail, if to the Company,
at the address of its principal offices and any electronic mail address as may be designated in writing by the Company and, if to Subscriber,
at its address in the books and records of the Company and any electronic mail address as may be designated in writing by Subscriber,
or to such other addresses as may be designated in writing by the Company or Subscriber. All such notices, statements or other documents
shall be deemed received on the date of receipt by the recipient thereof if received prior to 8:00 p.m. on a business day in the place
of receipt. Otherwise, any such notices, statements or other documents shall be deemed to have been received on the next succeeding business
day in the place of receipt.


 


6.3. Entire
Agreement. This Agreement, together with the Insider Letter and the registration rights agreement to be entered into with respect
to the Shares, each substantially in the form to be filed as an exhibit to the Registration Statement on Form S-1 associated with the
Company’s IPO, embodies the entire agreement and understanding between Subscriber and the Company with respect to the subject matter
hereof and supersedes all prior oral or written agreements and understandings relating to the subject matter hereof. No statement, representation,
warranty, covenant or agreement of any kind not expressly set forth in this Agreement shall affect, or be used to interpret, change or
restrict, the express terms and provisions of this Agreement.


 


6.4. Modifications
and Amendments. The terms and provisions of this Agreement may be modified or amended only by written agreement executed by all parties
hereto.


 


6.5. Waivers
and Consents. The terms and provisions of this Agreement may be waived, or consent for the departure therefrom granted, only by a
written document executed by the party entitled to the benefits of such terms or provisions. No such waiver or consent shall be deemed
to be or shall constitute a waiver or consent with respect to any other terms or provisions of this Agreement, whether or not similar.
Each such waiver or consent shall be effective only in the specific instance and for the purpose for which it was given, and shall not
constitute a continuing waiver or consent.


 






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6.6. Assignment.
The rights and obligations under this Agreement may not be assigned by either party hereto without the prior written consent of the other
party.


 


6.7. Benefit.
All statements, representations, warranties, covenants and agreements in this Agreement shall be binding on the parties hereto and shall
inure to the benefit of the respective successors and permitted assigns of each party hereto. Nothing in this Agreement shall be construed
to create any rights or obligations except among the parties hereto, and no person or entity shall be regarded as a third-party beneficiary
of this Agreement.


 


6.8. Governing
Law. This Agreement and the rights and obligations of the parties hereunder shall be construed in accordance with and governed by
the laws of the State of Delaware applicable to contracts wholly performed within the borders of such state, without giving effect to
the conflict of law principles thereof.


 


6.9. Severability.
In the event that any court of competent jurisdiction shall determine that any provision, or any portion thereof, contained in this Agreement
shall be unreasonable or unenforceable in any respect, then such provision shall be deemed limited to the extent that such court deems
it reasonable and enforceable, and, as so limited, shall remain in full force and effect. In the event that such court shall deem any
such provision, or portion thereof, wholly unenforceable, the remaining provisions of this Agreement shall nevertheless remain in full
force and effect.


 


6.10. No
Waiver of Rights, Powers and Remedies. No failure or delay by a party hereto in exercising any right, power or remedy under this Agreement,
and no course of dealing between the parties hereto, shall operate as a waiver of any such right, power or remedy of such party. No single
or partial exercise of any right, power or remedy under this Agreement by a party hereto, nor any abandonment or discontinuance of steps
to enforce any such right, power or remedy, shall preclude such party from any other or further exercise thereof or the exercise of any
other right, power or remedy hereunder. The election of any remedy by a party hereto shall not constitute a waiver of the right of such
party to pursue other available remedies. No notice to or demand on a party not expressly required under this Agreement shall entitle
the party receiving such notice or demand to any other or further notice or demand in similar or other circumstances or constitute a waiver
of the rights of the party giving such notice or demand to any other or further action in any circumstances without such notice or demand.


 


6.11. Survival
of Representations and Warranties. All representations and warranties made by the parties hereto in this Agreement or in any other
agreement, certificate or instrument provided for or contemplated hereby, shall survive the execution and delivery hereof and any investigations
made by or on behalf of the parties.


 






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6.12. No
Broker or Finder. Each of the parties hereto represents and warrants to the other that no broker, finder or other financial consultant
has acted on its behalf in connection with this Agreement or the transactions contemplated hereby in such a way as to create any liability
on the other. Each of the parties hereto agrees to indemnify and save the other harmless from any claim or demand for commission or other
compensation by any broker, finder, financial consultant or similar agent claiming to have been employed by or on behalf of such party
and to bear the cost of legal expenses incurred in defending against any such claim.


 


6.13. Headings
and Captions. The headings and captions of the various subdivisions of this Agreement are for convenience of reference only and shall
in no way modify or affect the meaning or construction of any of the terms or provisions hereof.


 


6.14. Counterparts.
This Agreement may be executed in one or more counterparts, all of which when taken together shall be considered one and the same agreement
and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that
both parties need not sign the same counterpart. In the event that any signature is delivered in pdf format via electronic mail, such
signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the
same force and effect as if such signature page were an original thereof.


 


6.15. Construction.
The parties hereto have participated jointly in the negotiation and drafting of this Agreement. If an ambiguity or question of intent
or interpretation arises, this Agreement will be construed as if drafted jointly by the parties hereto and no presumption or burden of
proof will arise favoring or disfavoring any party hereto because of the authorship of any provision of this Agreement. The words “include,”
“includes,” and “including” will be deemed to be followed by “without limitation.”
Pronouns in masculine, feminine, and neuter genders will be construed to include any other gender, and words in the singular form will
be construed to include the plural and vice versa, unless the context otherwise requires. The words “this Agreement,”
“herein,” “hereof,” “hereby,” “hereunder,” and words of similar
import refer to this Agreement as a whole and not to any particular subdivision unless expressly so limited. The parties hereto intend
that each representation, warranty, and covenant contained herein will have independent significance. If any party hereto has breached
any representation, warranty, or covenant contained herein in any respect, the fact that there exists another representation, warranty
or covenant relating to the same subject matter (regardless of the relative levels of specificity) which such party hereto has not breached
will not detract from or mitigate the fact that such party hereto is in breach of the first representation, warranty, or covenant.


 


6.16. Mutual
Drafting. This Agreement is the joint product of Subscriber and the Company and each provision hereof has been subject to the mutual
consultation, negotiation and agreement of such parties and shall not be construed for or against any party hereto.





 


[Signature Page Follows]


 




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If the foregoing accurately
sets forth our understanding and agreement, please sign the enclosed copy of this Agreement and return it to us.


 





	 	Very truly yours,
	 	 
	 	fs development Corp. III
	 	 	 
	 	By:	/s/ Dennis Ryan
	 	 	Name:	Dennis Ryan
	 	 	Title:	 Chief Financial Officer





 


Accepted and agreed as of the date first written above.


 


	fs development Holdings III, LLC	 
	 	 	 	 
	By:	Foresite Capital Fund V, L.P., its sole member	 
	 	 	 	 
	By:	Foresite Capital Management V, LLC, its general partner	 
	 	 	 	 
	By:	/s/ Dennis Ryan	 
	 	Name:	Dennis Ryan	 
	 	Title:	Chief Financial Officer	 



 


[Signature Page to Securities Subscription Agreement]