Exhibit 10.66

   

  KINETA, INC.

        COMMON STOCK PURCHASE AGREEMENT

   

  This Common Stock Purchase Agreement (the “Agreement”) is made as of June 26, 2008 by and between Kineta, Inc., a Washington corporation (the “Company”),
    and Shawn Iadonato (“Purchaser”).

   

  1.             Sale of Stock. Subject to the terms and conditions of this Agreement, on the Purchase Date (as defined below) the Company will issue and
    sell to Purchaser, and Purchaser agrees to purchase from the Company, 1,000,000 shares of the Company’s Common Stock (the “Shares”) at a purchase price of $0.001 per Share for a total purchase price of $1,000.00. The term “Shares” refers to the
    purchased Shares and all securities received in replacement of or in connection with the Shares pursuant to stock dividends or splits, all securities received in replacement of the Shares in a recapitalization, merger, reorganization, exchange or the
    like, and all new, substituted or additional securities or other properties to which Purchaser is entitled by reason of Purchaser’s ownership of the Shares.

   

  2.             Purchase. The purchase and sale of the Shares under this Agreement shall occur at the principal office of the Company simultaneously with
    the execution of this Agreement by the parties or on such other date as the Company and Purchaser shall agree (the “Purchase Date”). On the Purchase Date, the Company will deliver to Purchaser a certificate representing the Shares to be
    purchased by Purchaser (which shall be issued in Purchaser’s name) against payment of the purchase price therefor by Purchaser by (a) check made payable to the Company, (b) cancellation of indebtedness of the Company to Purchaser, or (c) by a
    combination of the foregoing.

   

  3.            Limitations on Transfer. In addition to any other limitation on transfer created by applicable securities laws, Purchaser shall not assign,
    encumber or dispose of any interest in the Shares except in compliance with the provisions below and applicable securities laws.

   

  (a)           Right of First Refusal. Before any Shares held by Purchaser or any transferee of Purchaser (either being sometimes referred to herein as the
    “Holder”) may be sold or otherwise transferred (including transfer by gift or operation of law), the Company or its assignee(s) shall have a right of first refusal to purchase the Shares on the terms and conditions set forth in this Section 3(a)
    (the “Right of First Refusal”).

   

  (i)       Notice of Proposed Transfer. The Holder of the Shares shall deliver to the Company a written notice (the “Notice”) stating: (A) the
    Holder’s bona fide intention to sell or otherwise transfer such Shares; (B) the name of each proposed purchaser or other transferee (“Proposed Transferee”); (C) the number of Shares to be transferred to each Proposed Transferee; and (D) the
    terms and conditions of each proposed sale or transfer. The Holder shall offer the Shares at the same price (the “Offered Price”) and upon the same terms (or terms as similar as reasonably possible) to the Company or its assignee(s).

   

  (ii)       Exercise of Right of First Refusal. At any time within 30 days after receipt of the Notice, the Company and/or its assignee(s) may, by giving
    written notice to the Holder, elect to purchase all, but not less than all, of the Shares proposed to be transferred to any one or more of the Proposed Transferees, at the purchase price determined in accordance with subsection (iii) below.

   

  
     

    
      
 

  

  
   

   

  (iii)       Purchase Price. The purchase price (“Purchase Price”) for the Shares purchased by the Company or its assignee(s) under this Section
    3(a) shall be the Offered Price. If the Offered Price includes consideration other than cash, the cash equivalent value of the non-cash consideration shall be determined by the Board of Directors of the Company in good faith.

   

  (iv)       Payment. Payment of the Purchase Price shall be made, at the option of the Company or its assignee(s), in cash (by check), by cancellation of
    all or a portion of any outstanding indebtedness or by any combination thereof within 30 days after receipt of the Notice or in the manner and at the times set forth in the Notice.

   

  (v)       Holder’s Right to Transfer. If all of the Shares proposed in the Notice to be transferred to a given Proposed Transferee are not purchased by
    the Company and/or its assignee(s) as provided in this Section 3(a), then the Holder may sell or otherwise transfer such Shares to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other transfer is
    consummated within 60 days after the date of the Notice and provided further that any such sale or other transfer is effected in accordance with any applicable securities laws and the Proposed Transferee agrees in writing that the provisions of this
    Section 3 shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not transferred to the Proposed Transferee within such period, or if the Holder proposes to change the price or other
    terms to make them more favorable to the Proposed Transferee, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal before any Shares held by the Holder may be sold or
    otherwise transferred.

   

  (vi)       Exception for Certain Family Transfers. Anything to the contrary contained in this Section 3(a) notwithstanding, the transfer of any or all of
    the Shares during Purchaser’s lifetime or on Purchaser’s death by will or intestacy to Purchaser’s Immediate Family or a trust for the benefit of Purchaser or Purchaser’s Immediate Family shall be exempt from the provisions of this Section 3(a). “Immediate


      Family” as used herein shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law,
    including adoptive relationships, or any person sharing the Purchaser’s household (other than a tenant or an employee). In such case, the transferee or other recipient shall receive and hold the Shares so transferred subject to the provisions of this
    Section, and there shall be no further transfer of such Shares except in accordance with the terms of this Section 3.

   

  (b)            Involuntary Transfer.

   

  (i)       Company’s Right to Purchase upon Involuntary Transfer. In the event, at any time after the date of this Agreement, of any transfer by operation
    of law or other involuntary transfer (including divorce or death, but excluding in the event of death a transfer to Immediate Family as set forth in Section 3(a)(vi) above) of all or a portion of the Shares by the record holder thereof, the Company
    shall have the right to purchase all of the Shares transferred at the greater of the purchase price paid by Purchaser pursuant to this Agreement or the fair market value of the Shares on the date of transfer. Upon such a transfer, the person acquiring
    the Shares shall promptly notify the Secretary of the Company of such transfer. The right to purchase such Shares shall be provided to the Company for a period of 30 days following receipt by the Company of written notice by the person acquiring the
    Shares.

   

  
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  (ii)       Price for Involuntary Transfer. With respect to any stock to be transferred pursuant to Section 3(b)(i), the price per Share shall be a price
    set by the Board of Directors of the Company that will reflect the current value of the stock in terms of present earnings and future prospects of the Company. The Company shall notify Purchaser or his or her executor of the price so determined within
    30 days after receipt by it of written notice of the transfer or proposed transfer of Shares. However, if Purchaser does not agree with the valuation as determined by the Board of Directors of the Company, Purchaser shall be entitled to have the
    valuation determined by an independent appraiser to be mutually agreed upon by the Company and Purchaser and whose fees shall be borne equally by the Company and Purchaser.

   

  (c)       Assignment. The right of the Company to purchase any part of the Shares may be assigned in whole or in part to any shareholder or shareholders of
    the Company or other persons or organizations.

   

  (d)       Restrictions Binding on Transferees. All transferees of Shares or any interest therein will receive and hold such Shares or interest subject to
    the provisions of this Agreement. Any sale or transfer of the Shares shall be void unless the provisions of this Agreement are satisfied.

   

  (e)       Termination of Rights. The Right of First Refusal and the Company’s right to repurchase the Shares in the event of an involuntary transfer
    pursuant to Section 3(c) above shall terminate upon the first sale of Common Stock of the Company to the general public pursuant to a registration statement filed with and declared effective by the Securities and Exchange Commission under the
    Securities Act of 1933, as amended (the “Securities Act”).

   

  (f)       Lock-Up Period; Agreement. In connection with the initial public offering of the Company’s securities and upon request of the Company or the
    underwriters managing such offering of the Company’s securities, each Purchaser agrees not to sell, make any short sale of, loan, grant any option for the purchase of, or otherwise dispose of any securities of the Company, however or whenever acquired
    (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed 180 days but subject to such extension or extensions as may be required by
    the underwriters in order to publish research reports while complying with the Rule 2711 of the National Association of Securities Dealers, Inc.) from the effective date of such registration statement as may be requested by the Company or such managing
    underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time of the Company’s initial public offering.

   

  
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  4.             Purchaser Representations. In connection with the purchase of the Shares, Purchaser represents to the Company the following:

   

  (a)       Purchaser is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and
    knowledgeable decision to acquire the Shares. Purchaser is purchasing the Shares for investment for his or her own account only and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning of the Securities
    Act.

   

  (b)       Purchaser understands that the Shares have not been registered under the Securities Act by reason of a specific exemption therefrom, which exemption depends
    upon, among other things, the bona fide nature of Purchaser’s investment intent as expressed herein.

   

  (c)       Purchaser understands that the Shares are “restricted securities” under applicable U.S. federal and state securities laws and that, pursuant to these laws,
    Purchaser must hold the Shares indefinitely unless they are registered with the Securities and Exchange Commission and qualified by state authorities, or an exemption from such registration and qualification requirements is available. Purchaser
    acknowledges that the Company has no obligation to register or qualify the Shares for resale. Purchaser further acknowledges that if an exemption from registration or qualification is available, it may be conditioned on various requirements including,
    but not limited to, the time and manner of sale, the holding period for the Shares, and requirements relating to the Company which are outside of the Purchaser’s control, and which the Company is under no obligation and may not be able to satisfy.

   

  (d)       Purchaser understands that Purchaser may suffer adverse tax consequences as a result of Purchaser’s purchase or disposition of the Shares. Purchaser represents
    that Purchaser has consulted any tax consultants Purchaser deems advisable in connection with the purchase or disposition of the Shares and that Purchaser is not relying on the Company for any tax advice.

   

  5.             Restrictive Legends and Stop-Transfer Orders.

   

  (a)            Legends. The certificate or certificates representing the Shares shall bear the following legends (as well as any legends required by
    applicable state and federal corporate and securities laws):

   

  (i)       THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AND HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A
    VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR DISTRIBUTION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL IN A FORM SATISFACTORY TO THE COMPANY THAT SUCH
    REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933.

   

  (ii)       THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE SHAREHOLDER, A
    COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

   

  
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  (iii)       Any legend required to be placed thereon by any appropriate securities commissioner.

   

  (b)          Stop-Transfer Notices. Purchaser agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue
    appropriate “stop transfer” instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records.

   

  (c)          Refusal to Transfer. The Company shall not be required (i) to transfer on its books any Shares that have been sold or otherwise transferred in
    violation of any of the provisions of this Agreement or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred.

   

  (d)         Removal of Legend. When all of the following events have occurred, the Shares then held by Purchaser will no longer be subject to the legend
    referred to in Section 5(a)(ii): (i) the termination of the Right of First Refusal; and (ii) the expiration or termination of the lock-up provisions of Section 3(f) (and of any agreement entered pursuant to Section 3(f)). After such time, and upon
    Purchaser’s request, a new certificate or certificates representing the Shares not repurchased shall be issued without the legend referred to in Section 5(a)(ii), and delivered to Purchaser.

   

  6.             No Employment Rights. Nothing in this Agreement shall affect in any manner whatsoever the right or power of the Company, or a parent or
    subsidiary of the Company, to terminate Purchaser’s employment or consulting relationship, for any reason, with or without cause.

   

  7.             Miscellaneous.

   

  (a)       Governing Law. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the parties hereto shall be
    governed, construed and interpreted in accordance with the laws of the State of Washington, without giving effect to principles of conflicts of law.

   

  (b)       Entire Agreement; Enforcement of Rights. This Agreement sets forth the entire agreement and understanding of the parties relating to the subject
    matter herein and merges all prior discussions between them. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing signed by the parties to this Agreement. The failure
    by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party.

   

  (c)       Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the parties agree to renegotiate
    such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be excluded from this Agreement, (ii) the balance of the Agreement shall be
    interpreted as if such provision were so excluded and (iii) the balance of the Agreement shall be enforceable in accordance with its terms.

   

  
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  (d)       Construction. This Agreement is the result of negotiations between and has been reviewed by each of the parties hereto and their respective
    counsel, if any; accordingly, this Agreement shall be deemed to be the product of all of the parties hereto, and no ambiguity shall be construed in favor of or against any one of the parties hereto.

   

  (e)       Notices. Any notice required or permitted by this Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent
    by fax or 48 hours after being deposited in the U.S. mail, as certified or registered mail, with postage prepaid, and addressed to the party to be notified at such party’s address or fax number as set forth below or as subsequently modified by written
    notice.

   

  (f)       Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original and all of which together
    shall constitute one instrument.

   

  (g)       Successors and Assigns. The rights and benefits of this Agreement shall inure to the benefit of, and be enforceable by the Company’s successors
    and assigns. The rights and obligations of Purchaser under this Agreement may only be assigned with the prior written consent of the Company.

   

  
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  The parties have executed this Agreement as of the date first set forth above.

   

  	 	KINETA, INC.
	 	 	 	 	 
	 	By: 	/s/ Charles Magness
	 	 	 
	 	Name: 	Charles Magness 
	 	 	 
	`	Title:	President and CEO 
	 	 	 	 	 
	 	Address:	[***]
	 	 	 	 	 
	 	 	 	 	 


  

  

  

  	 	PURCHASER:
	 	 
	 	Shawn Iadonato
	 	 	 	 	 	 
	 	/s/ Shawn Iadonato 
	 	Signature
	 	 	 	 	 
	 	Address: 	[***]
	 	 	 	 	 	 
	 	 	 	 	 	 
	 	Social Security or Tax ID Number: [***]
	 	 	 	 	 	 	 


  

  I, Xuan-Quyah Pham, spouse of Shawn Iadonato, have read and hereby approve the foregoing Agreement. In consideration of the Company’s granting my spouse the
    right to purchase the Shares as set forth in the Agreement, I hereby agree to be irrevocably bound by the Agreement and further agree that any community property or similar interest that I may have in the Shares shall be similarly bound by the
    Agreement. I hereby appoint my spouse as my attorney-in-fact with respect to any amendment or exercise of any rights under the Agreement.

   

  

  	 	/s/ Xuan-Quyah T. Pham 
	 	Spouse of Shawn Iadonato