Exhibit 10.7

  

   

  

  ARYA Sciences Acquisition Corp II

  c/o Perceptive Advisors

  51 Astor Place, 10th Floor

  New York, NY 10003

  

  

  March 2, 2020

  

  

  ARYA Sciences Holdings II

  c/o Perceptive Advisors

  51 Astor Place, 10th Floor

  New York, NY 10003

  

  

  RE:      Securities Subscription Agreement

  

  

  Gentlemen:

  

  

  This agreement (this “Agreement”) is entered into on March 2, 2020 by and between ARYA Sciences Holdings II, a
    Cayman Islands exempted limited company (the “Subscriber” or “you”), and ARYA Sciences Acquisition Corp II, a Cayman Islands exempted limited company (the “Company”). Pursuant to the terms hereof, the Company hereby accepts the offer the Subscriber has made to purchase 3,593,750 Class B ordinary shares, $0.0001 par value per share (the “Shares”),

    up to 468,750 of which are subject to surrender and cancellation by you if the underwriters of the initial public offering (“IPO”) of units (“Units”) of the Company do not
    fully exercise their over-allotment option (the “Over-allotment Option”). The Company and the Subscriber’s agreements regarding such 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 receiving in cash, the Company hereby issues the Shares to the Subscriber, and the Subscriber hereby subscribes for and purchases the Shares from the Company, 468,750 of which are
      subject to surrender and cancellation, on the terms and subject to the conditions set forth in this Agreement. All references in this Agreement to shares of the Company being surrendered and canceled shall take effect as surrenders and cancellations
      for no consideration of such shares as a matter of Cayman Islands law.

  

  

  1.2          Repurchase of Subscriber Share. Immediately following the issue of shares by the Company, the Company shall repurchase the 1 Class B Ordinary Share of $0.0001 par value in the Company currently held by Ogier Global (Subscriber) Limited
      in its capacity as initial subscriber, as permitted by the articles of association of the Company.

  

  

  2.          Representations, Warranties and Agreements.

  

  

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

  

  

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

  

  

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

  
    

    
      


    

  

  
  2.1.3          Registration and Authority. The Subscriber is a Cayman Islands limited
      company, validly existing and possessing all requisite power and authority necessary to carry out the transactions contemplated by this Agreement. Upon execution and delivery by you, this Agreement will be 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).

  

  

  2.1.4          Experience, Financial Capability and Suitability. Subscriber is: (i)
      sophisticated in financial matters and is able to evaluate the risks and benefits of the investment in the Shares and (ii) able to bear the economic risk of its investment in the Shares for an indefinite period of time because the Shares have not
      been registered under the Securities Act (as defined below) and therefore cannot be sold unless subsequently registered under the Securities Act or an exemption from such registration is available. Subscriber is capable of evaluating the merits and
      risks of its investment in the Company and has the capacity to protect its own interests. Subscriber 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 risks of an investment in the Shares and to afford a complete loss of Subscriber’s investment in the Shares.

  

  

  2.1.5          Access to Information; Independent Investigation. Prior to the execution
      of this Agreement, the 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 finances, operations, 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 and the information furnished pursuant to this paragraph. Subscriber understands that no person has been authorized to give any information or to make any representations which
      were not furnished pursuant to this Section 2 and Subscriber has not relied on any other representations or information in making its investment decision, whether written or oral, relating to the Company, its operations and/or its prospects.

  

  

  2.1.6          Regulation D Offering. Subscriber represents that it is an “accredited
      investor” as such term is defined in Rule 501(a) of Regulation D under the Securities Act of 1933, as amended (the “Securities Act”) and acknowledges the sale contemplated hereby is being made in reliance on a
      private placement exemption to “accredited investors” within the meaning of Section 501(a) of Regulation D under the Securities Act or similar exemptions under federal and state law.

  

  

  2.1.7          Investment Purposes. The Subscriber is purchasing the Shares solely for
      investment purposes, for the 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. The 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 of Regulation D 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 representing the Shares will contain a legend in respect of such restrictions. If in the future the 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) registration under the Securities Act, or (ii) an available exemption from registration. 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 an exemption, the 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 the Subscriber for the resale of the Shares until one year following consummation of the initial business combination of the Company,
      despite technical compliance with the requirements of Rule 144 and the release or waiver of any contractual transfer restrictions.

  

  

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

  

  

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

  

  

  2.2.1          Incorporation and Corporate Power. The Company is a Cayman Islands
      exempted company and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on the financial condition, operating results or assets of the Company. The
      Company possesses all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement.  Upon execution and delivery by the Company, this Agreement will be 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 memorandum and articles of association of the Company, (ii) any agreement, indenture or instrument to
      which the Company is a party or (iii) any law, statute, rule or regulation to which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject.

  

  

  2.2.3          Title to Securities. Upon issuance in accordance with, and payment
      pursuant to, the terms hereof, and registration in the Company’s register of members, the Shares will be duly and validly issued, fully paid and nonassessable. Upon issuance in accordance with, and payment pursuant to, the terms hereof, and
      registration in the Company’s register of members, the 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 be subject, (b) transfer restrictions under federal and state securities laws, and (c) liens, claims or encumbrances imposed due to the actions of the Subscriber.

  

  

  2.2.4          No Adverse Actions. There are no actions, suits, investigations or
      proceedings pending, threatened against or affecting the Company which: (i) seek to restrain, enjoin, prevent the consummation of or otherwise affect the transactions contemplated by this Agreement or (ii) question the validity or legality of any
      transactions or seeks to recover damages or to obtain other relief in connection with any transactions.

  
    

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  3.          Surrender and Cancellation of Shares.

  

  

  3.1          Partial or No Exercise of the Over-allotment Option. In the event the
      Over-allotment Option granted to the representative(s) of the underwriters of the Company’s IPO is not exercised in full, the Subscriber acknowledges and agrees that it shall surrender for cancellation any and all rights to such number of Shares (up
      to an aggregate of 468,750 Shares and pro rata based upon the percentage of the Over-allotment Option exercised) such that immediately following such surrender, the Subscriber (and all other initial shareholders prior to the IPO, if any) will own an
      aggregate number of Shares (not including ordinary shares issuable upon exercise of any warrants or any ordinary shares purchased by Subscriber in the Company’s IPO or in the aftermarket) equal to 20% of the issued and outstanding ordinary shares of
      the Company immediately following the IPO.

  

  

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

  

  

  4.          Waiver of Liquidation Distributions; Redemption Rights. In connection with the Shares purchased
      pursuant to this Agreement, the Subscriber hereby waives any and all right, title, interest or claim of any kind in or to any distributions by the Company from the trust account which will be established for the benefit of the Company’s public
      shareholders and into which substantially all of the proceeds of the IPO will be deposited (the “Trust Account”), in the event of a liquidation of the Company upon the Company’s failure to timely complete an
      initial business combination. For purposes of clarity, in the event the Subscriber purchases ordinary shares in the IPO or in the aftermarket, any additional Shares so purchased shall be eligible to receive any liquidating distributions by the
      Company. However, in no event will the Subscriber have the right to redeem any ordinary shares into funds held in the Trust Account upon the successful completion of an initial business combination.

  

  

  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, 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 such 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 with all applicable state securities laws.

  

  

  5.2          Restrictive Legends. Any certificates representing the Shares shall have
      endorsed thereon legends substantially as follows:

  

  

  “THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE UNITED STATES 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 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.”

  
    

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  “THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO LOCKUP PROVISIONS AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED DURING THE TERM OF
    THE LOCKUP.”

  

  

  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. 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.

  

  

  5.4          Registration Rights. Subscriber acknowledges that the Shares are being
      purchased pursuant to an exemption from the registration requirements of the Securities Act and will become freely tradable only after certain conditions are met or they are registered pursuant to a Registration and Shareholder Rights Agreement to be
      entered into with the Company prior to the closing of the IPO.

  

  

  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: (i) in writing and delivered personally or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission to the address designated in writing, (ii) by
      facsimile to the number most recently provided to such party or such other address or fax number as may be designated in writing by such party and (iii) by electronic mail, to the electronic mail address most recently provided to such party or such
      other electronic mail address as may be designated in writing by such party. Any notice or other communication so transmitted shall be deemed to have been given on the day of delivery, if delivered personally, on the business day following receipt of
      written confirmation, if sent by facsimile or electronic transmission, one (1) business day after delivery to an overnight courier service or five (5) days after mailing if sent by mail.

  

  

  6.3          Entire Agreement. This Agreement, together with that certain Insider Letter
      to be entered into between Subscriber and the Company, 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 the
      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.

  
    

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  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.

  

  

  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 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.

  

  

  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.

  
    

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  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 by facsimile transmission or any other form of electronic delivery, 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 the 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.

  

  

  7.          Voting and Redemption of Shares. Subscriber agrees to vote the Shares in favor of an initial business
      combination that the Company negotiates and submits for approval to the Company’s shareholders and shall not seek redemption with respect to such Shares. Additionally, the Subscriber agrees not to redeem any Shares in connection with a tender offer
      presented to the Company’s shareholders in connection with an initial business combination negotiated by the Company.

  

  

  [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,

        
	 	
          ARYA Sciences Acquisition Corp II

        
	 	
          By:

        	
           /s/ Samuel Cohn

        
	 	 	
          Name:

        	
           Samuel Cohn

        
	 	 	
          Title:

        	
           Secretary

        


   

  

  Accepted and agreed as of the date first written above.

  

  

  ARYA Sciences Holdings II

  

  

  	
          By:

        	
          /s/ Samuel Cohn

        	 
	 	
          Name: Samuel Cohn

        	 
	 	
          Title: Secretary