Document:

EX-10.1

 Exhibit 10.1 

STOCKHOLDER SUPPORT AGREEMENT 

STOCKHOLDER SUPPORT AGREEMENT, dated as of March 17, 2022 (this “Agreement”), by and among Brookline Capital Acquisition
Corp., a Delaware corporation (“BCAC”), and certain of the stockholders of Apexigen, Inc., a Delaware corporation (the “Company”), whose names appear on the signature pages of this Agreement (each, a
“Stockholder” and, collectively, the “Stockholders”). 
 WHEREAS, BCAC, Project Barolo Merger Sub, Inc., a
Delaware corporation and wholly owned subsidiary of BCAC (“Merger Sub”), and the Company are entering into, concurrently herewith, a Business Combination Agreement substantially in the form attached hereto as Exhibit B (the
“BCA”; terms used but not defined in this Agreement shall have the meanings ascribed to them in the BCA), which provides, among other things, that, upon the terms and subject to the conditions thereof, Merger Sub will be merged with
and into the Company (the “Merger”), with the Company surviving the Merger as a wholly owned subsidiary of BCAC; and 

WHEREAS, as of the date hereof, each Stockholder owns of record the number of shares and class and series (if appropriate) of Company Capital
Stock as set forth opposite such Stockholder’s name on Exhibit A hereto (all such shares of Company Capital Stock and any shares of Company Capital Stock of which ownership of record or the power to vote is hereafter acquired by the
Stockholders prior to the termination of this Agreement being referred to herein as the “Shares”). 
 NOW, THEREFORE, in
consideration of the foregoing and of the mutual covenants and agreements contained herein, and intending to be legally bound hereby, the parties hereto hereby agree as follows: 

1. Agreement to Vote. Unless the Expiration Time (as defined below) has occurred, each Stockholder, by this Agreement, with respect to
such Stockholder’s Shares, severally and not jointly, hereby agrees to vote, at any meeting of the stockholders of the Company called for the purpose of approving the Merger, and in any action by written consent of the stockholders of the
Company requested by the Company for the purposes of approving the Merger (which written consent shall be substantially in the form attached hereto as Exhibit C delivered promptly, and in any event within
seventy-two (72) hours, after the Company requests such delivery), all of such Stockholder’s Shares held by such Stockholder at such time in favor of the approval and adoption of the BCA and approval
of the Merger and other Transactions. Each Stockholder acknowledges receipt and review of a copy of the BCA. 
 2. Termination of
Investor Rights Agreement, Related Agreements. Unless the Expiration Time has occurred before the Effective Time, each Stockholder, by this Agreement, with respect to such Stockholder’s Shares, severally and not jointly, hereby terminates,
subject to and effective immediately prior to the Effective Time (provided that all Terminating Rights (as defined below) between the Company and any other holder of Company Capital Stock shall also terminate at such time), that certain
(a) Investor Rights Agreement, (b) the Right of First Refusal and Co-Sale Agreement, (c) the Voting Agreement, and (d) if applicable to Stockholder, any rights under any letter agreement
providing for redemption rights, put rights, purchase rights or other similar rights 

 
not generally available to stockholders of the Company (the “Terminating Rights”) between Stockholder and the Company, but excluding, for the avoidance of doubt, any rights such
Stockholder may have that relate to any commercial or employment agreements or arrangements between such Stockholder and the Company or any subsidiary, which shall survive in accordance with their terms. 

3. Transfer of Shares. Each Stockholder severally and not jointly, agrees that, from the date of this Agreement until the Expiration
Time, it shall not, directly or indirectly, without the prior written consent of BCAC, (a) sell, assign, transfer (including by operation of law), lien, pledge, dispose of or otherwise encumber any of the Shares or otherwise agree to do any of
the foregoing, except for a sale, assignment or transfer pursuant to the BCA or to another stockholder of the Company that is or becomes a party to this Agreement and bound by the terms and obligations hereof, (b) deposit any Shares into a
voting trust or enter into a voting agreement or arrangement or grant any proxy or power of attorney with respect thereto that is inconsistent with this Agreement or (c) enter into any contract, option or other arrangement or undertaking with
respect to the direct or indirect acquisition or sale, assignment, transfer (including by operation of law) or other disposition of any Shares; provided, that the foregoing shall not prohibit the transfer of any Shares (i) to an affiliate of
Stockholder, (ii) if Stockholder is a natural person, to a member of Stockholder’s immediate family, (iii) to any charitable organization described in Section 170(c) of the Code, (iv) to any trust, the beneficiaries of which
include only the persons named in the preceding clauses (ii) or (iii), (v) to any corporation, limited liability company or partnership, the stockholders, members or partners of which include only the persons described in clauses
(i) through (iv) above or (vi) by will or under the laws of intestacy upon the death of Stockholder, but only, in each of cases (i) through (v), if such transferee shall execute this Agreement or a joinder agreeing to become a party
to this Agreement, in each case, in form and substance reasonably acceptable to the Company. 
 4. No Solicitation of Transactions.
From the date of this Agreement until the Expiration Time, each of the Stockholders severally and not jointly, agrees not to directly or indirectly, through any officer, director, representative, agent or otherwise, (a) solicit, negotiate with,
provide any nonpublic information regarding the Company’s business, or enter into any Contract with, or in any manner knowingly encourage, any proposal of, any person (other than BCAC and its affiliates) relating to an Alternative Transaction
or (b) enter into any agreement regarding, continue or otherwise participate in any discussions regarding, or furnish to any person any information with respect to, or cooperate in any way that would otherwise be reasonably expected to lead to,
any Alternative Transaction. Each Stockholder shall, and shall direct its representatives and agents to, immediately cease and cause to be terminated any discussions or negotiations with any parties that may be ongoing with respect to any
Alternative Transaction to the extent required by the BCA. Notwithstanding the foregoing, each Stockholder may respond to any unsolicited proposal regarding an Alternative Transaction by indicating that the Company is subject to the exclusivity
provisions set forth in the BCA and that such Stockholder is subject to the restrictions set forth in this Section 4. 

  
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 5. Representations and Warranties. Each Stockholder severally and not jointly,
represents and warrants to BCAC as follows: 
 (a) The execution, delivery and performance by such Stockholder of this Agreement and the
consummation by such Stockholder of the transactions contemplated hereby do not and will not (i) conflict with or violate any Law applicable to such Stockholder, (ii) require any consent, approval or authorization of, declaration, filing
or registration with, or notice to, any person or entity, (iii) result in the creation of any encumbrance on any Shares (other than under this Agreement, the BCA and the agreements contemplated by the BCA) or (iv) if such Stockholder is an
entity, conflict with or result in a breach of or constitute a default under any provision of such Stockholder’s governing documents, except, with respect to clauses (i) through (iii), for any such conflicts, violations, consents,
approvals, authorizations, filings, registrations or notices that, individually or in the aggregate, are not reasonably expected to prevent, materially delay or materially impede the performance by such Stockholder of its obligations hereunder. 

(b) As of the date of this Agreement, such Stockholder owns exclusively of record and has good and valid title to the Shares set forth
opposite the Stockholder’s name on Exhibit A, and as of the date of this Agreement, such Stockholder has the sole power (as currently in effect) to vote such Shares, and such Stockholder does not own, directly or indirectly, any other
Shares. 
 (c) Such Stockholder has the necessary power and authority (or, in the case of any Stockholder that is a natural person,
capacity) to execute, deliver and perform this Agreement and that this Agreement has been duly authorized, executed and delivered by such Stockholder. 

6. Termination. Other than this Section 6 and Section 8, which shall survive any
termination of this Agreement, this Agreement and the obligations of the Stockholders under this Agreement shall automatically terminate upon the earliest of (a) the Effective Time; (b) the termination of the BCA in accordance with its
terms; and (c) the effective date of a written agreement of the parties hereto terminating this Agreement (the time of termination pursuant to this Section 6, being referred to as the “Expiration Time”). Upon termination
of this Agreement, neither party shall have any further obligations or liabilities under this Agreement; provided that nothing in this Section 6 shall relieve any party of liability for any willful material breach of
this Agreement occurring prior to termination. The representations and warranties contained in this Agreement and in any certificate or other writing delivered pursuant hereto shall not survive the Closing or the termination of this Agreement 

7. No Ownership Interest. Nothing contained in this Agreement shall be deemed to vest in BCAC any direct or indirect ownership or
incidence of ownership of or with respect to the Shares. All rights, ownership and economic benefits of and relating to the Shares shall remain vested in and belong to the relevant Stockholder, and BCAC shall not have the authority to direct any
Shareholder in the voting or disposition of any Shares, except as otherwise expressly provided herein. 

  
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 8. Miscellaneous. 

(a) Except as otherwise provided herein, all costs and expenses incurred in connection with this Agreement and the transactions contemplated
hereby shall be paid by the party incurring such costs and expenses, whether or not the transactions contemplated hereby are consummated. 

(b) All notices, requests, claims, demands and other communications hereunder shall be in writing and shall be given (and shall be deemed to
have been duly given upon receipt) by delivery in person, by e-mail or by registered or certified mail (postage prepaid, return receipt requested) to the respective parties at the following addresses or e-mail addresses (or at such other address or email address for a party as shall be specified in a notice given in accordance with this Section 7(b)): 

If to BCAC, to it at: 
 Brookline
Capital Acquisition Corp. 
 280 Park Avenue, Suite 43W 

New York, NY 10017 
 Attention:
Samuel P. Wertheimer, Chairman and CEO 
 Email: *** 

with a copy to: 
 DLA Piper LLP
(US) 
 1251 Avenue of the Americas 

New York, NY 10020 
 Attention:
James Kelly; Peter Ekberg 
 Email: james.kelly@us.dlapiper.com; peter.ekberg@us.dlapiper.com 

and 
 DLA Piper LLP (US) 

555 Mission Street 
 Suite 2400

 San Francisco, CA 94105 

Attention: Jeffrey Selman 
 Email:
jeffrey.selman@us.dlapiper.com 
 If to a Stockholder, to the address or email address set forth for Stockholder on the signature page
hereof. 
 (c) If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule of law, or
public policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect so long as the economic or legal 

  
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substance of the transactions contemplated hereby is not affected in any manner materially adverse to any party. Upon such determination that any term or other provision is invalid, illegal or
incapable of being enforced, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in a mutually acceptable manner in order that the transactions
contemplated hereby be consummated as originally contemplated to the fullest extent possible. 
 (d) This Agreement constitutes the entire
agreement among the parties with respect to the subject matter hereof and supersedes all prior agreements and undertakings, both written and oral, among the parties, or any of them, with respect to the subject matter hereof. This Agreement shall not
be assigned (whether pursuant to a merger, by operation of law or otherwise), by BCAC without the prior express written consent of the Stockholders or by any Stockholder without the prior express written consent of BCAC. 

(e) This Agreement shall be binding upon and inure solely to the benefit of each party hereto (and BCAC’s permitted assigns), and nothing
in this Agreement, express or implied, is intended to or shall confer upon any other person any right, benefit or remedy of any nature whatsoever under or by reason of this Agreement. No Stockholder shall be liable for the breach by any other
Stockholder of this Agreement. 
 (f) The parties hereto agree that irreparable damage would occur in the event any provision of this
Agreement was not performed in accordance with the terms hereof and that the parties shall be entitled to specific performance of the terms hereof, in addition to any other remedy at law or in equity. 

(g) This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware applicable to contracts executed
in and to be performed in that State. All Actions arising out of or relating to this Agreement shall be heard and determined exclusively in any Delaware Chancery Court, provided, however, that if jurisdiction is not then available in the Delaware
Chancery Court, then any such legal Action may be brought in any federal court located in the State of Delaware or any other Delaware state court. The parties hereto hereby (i) irrevocably submit to the exclusive jurisdiction of the aforesaid
courts for themselves and with respect to their respective properties for the purpose of any Action arising out of or relating to this Agreement brought by any party hereto, and (ii) agree not to commence any Action relating thereto except in
the courts described above in Delaware, other than Actions in any court of competent jurisdiction to enforce any judgment, decree or award rendered by any such court in Delaware as described herein. Each of the parties further agrees that notice as
provided herein shall constitute sufficient service of process and the parties further waive any argument that such service is insufficient. Each of the parties hereby irrevocably and unconditionally waives, and agrees not to assert, by way of
motion or as a defense, counterclaim or otherwise, in any Action arising out of or relating to this Agreement or the Transactions, (a) any claim that it is not personally subject to the jurisdiction of the courts in Delaware as described herein
for any reason, (b) that it or its property is exempt or immune from jurisdiction of any such court or from any legal process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment in aid of
execution of judgment, execution of judgment or otherwise) and (c) that (i) the Action in any such court is brought in an inconvenient forum, (ii) the venue of such Action is improper or (iii) this Agreement, or the subject matter
hereof, may not be enforced in or by such courts. 

  
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 (h) This Agreement may be executed and delivered (including by facsimile or portable
document format (pdf) transmission) in counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original but all of which taken together shall constitute one and the same
agreement. 
 (i) At the request of BCAC, in the case of any Stockholder, or at the request of the Stockholders, in the case of BCAC, and
without further consideration, each party shall execute and deliver or cause to be executed and delivered such additional documents and instruments and take such further action as may be reasonably necessary to consummate the transactions
contemplated by this Agreement. 
 (j) This Agreement may be amended in writing by the parties hereto at any time prior to the Effective
Time. This Agreement may not be amended except by an instrument in writing signed by each of the parties hereto. 
 (k) At any time prior to
the Effective Time, (i) each party hereto may, solely with respect to itself and not affecting the rights, claims or position of any other party hereto, (A) extend the time for the performance of any obligation or other act of any other
party owed to it, (B) waive any inaccuracy in the representations and warranties of any party contained herein and (C) waive compliance with any agreement of a party hereto or any condition to its own obligations contained herein. Any such
extension or waiver shall be valid if set forth in an instrument in writing signed by the relevant party. 
 (l) This Agreement shall not be
effective or binding upon any Stockholder until after such time as the BCA is executed and delivered by the Company, BCAC and Merger Sub. 

(m) Each of the parties hereto hereby waives to the fullest extent permitted by applicable law any right it may have to a trial by jury
with respect to any litigation directly or indirectly arising out of, under or in connection with this Agreement. Each of the parties hereto (i) certifies that no representative, agent or attorney of any other party has
represented, expressly or otherwise, that such other party would not, in the event of litigation, seek to enforce that foregoing waiver and (ii) acknowledges that it and the other parties hereto have been induced to enter into
this Agreement and the transactions contemplated hereby, as applicable, by, among other things, the mutual waivers and certifications in this Section 7(k). 

[Signature pages follow] 

  
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 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written
above. 
  

			
	 BROOKLINE CAPITAL ACQUISTION CORP.

		
	 By
	 	 /s/ Dr. Samuel P. Wertheimer

	 Name:
	 	 Dr. Samuel P. Wertheimer

	 Title:
	 	 Chief Executive Officer and Chairman

 Signature Page to Stockholder Support Agreement 

 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written
above. 
  

			
	 [HOLDER]

		
	 By:
	 	          

	 Name:
	 	

  
 Signature Page to
Stockholder Support Agreement 

 EXHIBIT A 

 

											
	 Stockholder Name
	  	 Common Shares
	  	 Series A-1 Preferred
Shares
	  	
Series
A-2
Preferred
Shares
	  	 Series B
Preferred
Shares
	  	 Series C
Preferred
Shares

 EXHIBIT B 

Business Combination Agreement 

[Attached as Exhibit 2.1 to Current Report on Form 8-K, filed on March 18, 2022] 

 EXHIBIT C 

Stockholder Written Consent 

[see attached] 

 ACTION BY WRITTEN CONSENT 

OF THE 
 STOCKHOLDERS OF

 APEXIGEN, INC. 

(a Delaware corporation) 

The undersigned, being the stockholders (the “STOCKHOLDERS”) of Apexigen, Inc., a
Delaware corporation (the “COMPANY”), and constituting the holders of the outstanding shares having not less than the minimum number of votes that would be necessary to authorize or take such
actions at a meeting at which all the shares entitled to vote thereon were present and voted, by written consent in lieu of a meeting, hereby, pursuant to the provisions of Sections 228 and 251 of the General Corporation Law of the State of Delaware
(“DGCL”) and the bylaws of the Company, consent to and approve the following resolutions and each and every action effected thereby: 

Approval of the Business Combination Agreement and Related Agreements 

WHEREAS, the Board of Directors of the Company (the “BOARD”) has unanimously
(a) determined that (i) that certain Business Combination Agreement, in the form attached hereto as Exhibit A (together with all the schedules, exhibits and attachments thereto, the “BUSINESS
COMBINATION AGREEMENT”), by and among Brookline Capital Acquisition Corp., a Delaware corporation, (the “BCAC”), Project Barolo Merger Sub, Inc., a Delaware corporation
(“MERGER SUB”) and the Company, pursuant to which Merger Sub will merge with and into the Company with the Company surviving as a wholly owned subsidiary of BCAC (the entire transaction,
the “MERGER”) and (ii) that the Merger are fair to, and in the best interests of, the Company and its stockholders and has approved and adopted this Agreement and the Merger and declared their
advisability and approved the Merger and the other Transactions, and (b) recommended the approval and adoption of this Agreement and the Merger by the Stockholders of the Company; 

WHEREAS, capitalized terms used herein and not otherwise defined shall have the meaning assigned to them in the Business Combination
Agreement; 
 WHEREAS, in connection with, and as contemplated by, the Merger Agreement, the Company has or will enter into, or
execute and deliver, certain other agreements, instruments, amendments, terminations, certificates, and other documents, including the Ancillary Agreements (collectively, the “TRANSACTION
DOCUMENTS”). 
 WHEREAS, pursuant to Section 3.01(a) of the Business Combination
Agreement, at the Effective Time, (a) all shares of Company Capital Stock issued and outstanding immediately prior to the Effective Time (including shares of Company Capital Stock that are issued and outstanding immediately prior to the
Effective Time resulting from the conversion or exercise of Company Preferred Stock, Company Warrants and Company Options prior to the Effective Time, but excluding any Dissenting Shares) shall be canceled and converted into the right to receive a
number of shares of BCAC Common Stock equal to the Exchange Ratio, and (b) all shares of Company Capital Stock held in the treasury of the Company shall be canceled without any consideration, in accordance with the terms of the Business
Combination Agreement; 
 WHEREAS, pursuant to Section 3.01(d) of the Business Combination Agreement, at the Effective Time,
each Company Option that is, as of immediately prior to the Effective Time, outstanding shall be assumed by BCAC and converted into an option to purchase a number of shares of BCAC Common Stock (such option, an “EXCHANGED
OPTION”) equal to the product (rounded down to the nearest whole number) of (x) the number of shares of Company Common Stock subject to such Company 

 
Option immediately prior to the Effective Time and (y) the Exchange Ratio, at an exercise price per share (rounded up to the nearest whole cent) equal to the quotient of (A) the
exercise price per share of such Company Option immediately prior to the Effective Time divided by (B) the Exchange Ratio; 

WHEREAS, pursuant to Section 3.01(e) of the Business Combination Agreement, immediately prior to the Effective Time, each
outstanding Company Warrant shall be treated in accordance with the terms thereof, as may be amended prior to the Effective Time by the Company and the holder thereof with the consent of BCAC (which such consent shall not be unreasonably
conditioned, withheld or delayed); 
 WHEREAS, the undersigned Stockholders are aware of the material facts related to the Business
Combination Agreement and the transactions contemplated thereby, including the Merger, and have had adequate opportunity to ask questions regarding the Merger; 

WHEREAS, for all purposes, the approval by the holders of at least (a) a majority of the outstanding shares of Company Capital
Stock, voting together as a single class, and (b) a majority of the outstanding shares of Series A-1 Preferred Stock, Series B Preferred Stock and Series C Preferred Stock, voting together as a single
class on an as-converted basis (the “REQUISITE APPROVAL”) is required to approve the Business Combination Agreement and the transactions
contemplated thereby, including the Merger; 
 NOW, THEREFORE, BE IT RESOLVED, that the undersigned Stockholders of the Company,
representing the Requisite Approval, do hereby adopt the Business Combination Agreement and the Transaction Documents, and hereby approve the principal terms of the Merger and the other transactions contemplated by the Business Combination
Agreement. 
 RESOLVED FURTHER, that the Stockholders have determined that the consideration payable in accordance with the terms of
the Business Combination Agreement, is fair and reasonable to the Company and the Stockholders. 
 RESOLVED FURTHER, that each of the
officers, be, and each hereby is, authorized, empowered, and directed for, on behalf of and in the name of the Company to (a) negotiate, execute, deliver and file any agreements, certificates, other instruments or documents, (b) pay
expenses and taxes and (c) do or cause to be done any and all such other acts and things as he may deem necessary, appropriate or advisable to effect or implement the Merger and the other transactions contemplated by the Business Combination
Agreement, any such action taken by any such officer to be conclusive evidence of such determination. 
 Waiver of Appraisal and Dissenters Rights

 WHEREAS, a stockholder of the Company who does not vote in favor of the Merger and is in compliance with all the provisions
of the DGCL concerning the right of such dissenting stockholder to demand appraisal of such shares in connection with the Merger (a “DISSENTING STOCKHOLDER”) may, under certain circumstances by
following procedures prescribed by Section 262 of the DGCL, excerpts of which are attached hereto as Exhibit B, exercise appraisal rights under the DGCL to receive cash in an amount equal to the “fair value” of such
Stockholder’s shares of Company Capital Stock as to which such stockholder has exercised such appraisal rights (such “fair value” will exclude any element of value arising from the accomplishment or expectation of the Merger). 

WHEREAS, a Dissenting Stockholder must follow the appropriate procedures under the DGCL, or suffer the termination or waiver of such
appraisal rights or dissenters’ rights, respectively. 

  
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 NOW, THEREFORE, BE IT RESOLVED, that each undersigned Stockholder, with
respect only to himself, herself or itself, hereby waives and agrees not to assert any appraisal or dissenters’ rights or any rights similar that the undersigned Stockholders may have in connection with the Merger, whether under the DGCL or
other applicable Law. 
 Termination of Certain Agreements 

WHEREAS, in connection with the consummation of the Merger, it is in the best interests of the Company and the Stockholders to terminate
each of the agreements previously entered into among the Company and certain of the Stockholders of the Company, which agreements are set forth on Exhibit C (collectively, the “STOCKHOLDER
AGREEMENTS”), among the Company and the persons listed in their respective Exhibits, with such termination to be contingent upon the consummation of the Merger and effective as of immediately prior to the
Effective Time. 
 NOW, THEREFORE, BE IT RESOLVED, that to the extent any of the undersigned Stockholders is a party of any of the
Stockholder Agreements, such Stockholder hereby consents to the termination of the Stockholder Agreements to which such Stockholder is party, immediately prior to, and contingent upon the occurrence of, the Effective Time, and that upon the
occurrence of the Effective Time, such Stockholder Agreements shall be null and void and of no further force or effect. 
 General Authority;
Effectiveness 
 RESOLVED, that all acts and deeds of the officers, directors and agents of the Company, taken prior to the
date hereof, to carry out the intent and to accomplish the purposes of the foregoing resolutions are hereby approved, adopted, ratified and confirmed in all respects as the acts and deeds of the Company. 

RESOLVED FURTHER, that the officers of the Company be, and hereby are, authorized, empowered, and directed for, on behalf of and in the
name of the Company, to take all such further actions as such officer may approve or deem necessary, appropriate or advisable to effect or implement the intent and purposes of the foregoing resolutions and the transactions contemplated thereby, all
such actions, executions, deliveries, filings and payments to be conclusive evidence of such determination. 
 RESOLVED FURTHER, by
signature hereto, each undersigned Stockholder hereby consents with respect to all of the shares of Company Capital Stock held of record by such Stockholder on the books of the Company. 

RESOLVED FURTHER, that each of the undersigned Stockholders represents and warrants that such Stockholder has all necessary power and
authority to execute and deliver this Written Consent, to carry out such Stockholder’s obligations contemplated hereby. 
 RESOLVED
FURTHER, that the Stockholder hereby waives any and all notice requirements applicable to, or triggered by, the Merger, the Merger Agreement, and the transactions contemplated thereby that are required under the certificate of incorporation of
the Company, including Section 4(j), as it may be amended from time to time, or bylaws of the Company, any applicable law or Contract between the Stockholder and the Company. 

RESOLVED FURTHER, that this Written Consent is coupled with an interest and is irrevocable. 

[Reminder of Page Left Blank] 

  
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 In witness whereof, by executing this Action by Written Consent, each undersigned
Stockholder is giving written consent with respect to all shares of Company Capital Stock held by such Stockholder. This Action by Written Consent may be executed in any number of counterparts, each of which shall constitute an original and all of
which together shall constitute one action. Any copy, facsimile or other reliable reproduction of this action may be substituted or used in lieu of the original writing for any and all purposes for which the original writing could be used. This
written consent shall be filed in the minute book of the Company and shall be effective for all purposes as of the date first set forth above. 
  

	
	STOCKHOLDER:
	  

	Print name of Stockholder
	  

	Signature
	  

	Date of signature
	  

	Name of signer (for entities)
	  

	Title of signer (for entities)

 EXHIBIT A 

BUSINESS COMBINATION AGREEMENT 

 EXHIBIT B 

DGCL SECTION 262 
 § 262. Appraisal
Rights 
 (a) Any stockholder of a corporation of this State who holds shares of stock on the date of the making of a demand pursuant to subsection
(d) of this section with respect to such shares, who continuously holds such shares through the effective date of the merger or consolidation, who has otherwise complied with subsection (d) of this section and who has neither voted in
favor of the merger or consolidation nor consented thereto in writing pursuant to § 228 of this title shall be entitled to an appraisal by the Court of Chancery of the fair value of the stockholder’s shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section, the word “stockholder” means a holder of record of stock in a corporation; the words “stock” and “share” mean and include what is
ordinarily meant by those words; and the words “depository receipt” mean a receipt or other instrument issued by a depository representing an interest in 1 or more shares, or fractions thereof, solely of stock of a corporation, which stock
is deposited with the depository. 
 (b) Appraisal rights shall be available for the shares of any class or series of stock of a constituent corporation in
a merger or consolidation to be effected pursuant to § 251 (other than a merger effected pursuant to § 251(g) of this title), § 252, § 254, § 255, § 256, § 257, § 258, § 263 or § 264 of this title:

 (1) Provided, however, that no appraisal rights under this section shall be available for the shares of any class or series of stock, which stock, or
depository receipts in respect thereof, at the record date fixed to determine the stockholders entitled to receive notice of the meeting of stockholders to act upon the agreement of merger or consolidation (or, in the case of a merger pursuant to
§ 251(h), as of immediately prior to the execution of the agreement of merger), were either: (i) listed on a national securities exchange or (ii) held of record by more than 2,000 holders; and further provided that no appraisal rights
shall be available for any shares of stock of the constituent corporation surviving a merger if the merger did not require for its approval the vote of the stockholders of the surviving corporation as provided in § 251(f) of this title. 

(2) Notwithstanding paragraph (b)(1) of this section, appraisal rights under this section shall be available for the shares of any class or series of stock of
a constituent corporation if the holders thereof are required by the terms of an agreement of merger or consolidation pursuant to §§ 251, 252, 254, 255, 256, 257, 258, 263 and 264 of this title to accept for such stock anything except:

 a. Shares of stock of the corporation surviving or resulting from such merger or consolidation, or depository receipts in respect thereof; 

b. Shares of stock of any other corporation, or depository receipts in respect thereof, which shares of stock (or depository receipts in respect thereof) or
depository receipts at the effective date of the merger or consolidation will be either listed on a national securities exchange or held of record by more than 2,000 holders; 

c. Cash in lieu of fractional shares or fractional depository receipts described in the foregoing paragraphs (b)(2)a. and b. of this section; or 

 d. Any combination of the shares of stock, depository receipts and cash in lieu of fractional shares or
fractional depository receipts described in the foregoing paragraphs (b)(2)a., b. and c. of this section. 
 (3) In the event all of the stock of a
subsidiary Delaware corporation party to a merger effected under § 253 or § 267 of this title is not owned by the parent immediately prior to the merger, appraisal rights shall be available for the shares of the subsidiary Delaware
corporation. 
 (4) [Repealed.] 
 (c) Any corporation may
provide in its certificate of incorporation that appraisal rights under this section shall be available for the shares of any class or series of its stock as a result of an amendment to its certificate of incorporation, any merger or consolidation
in which the corporation is a constituent corporation or the sale of all or substantially all of the assets of the corporation. If the certificate of incorporation contains such a provision, the provisions of this section, including those set forth
in subsections (d),(e), and (g) of this section, shall apply as nearly as is practicable. 
 (d) Appraisal rights shall be perfected as follows: 

(1) If a proposed merger or consolidation for which appraisal rights are provided under this section is to be submitted for approval at a meeting of
stockholders, the corporation, not less than 20 days prior to the meeting, shall notify each of its stockholders who was such on the record date for notice of such meeting (or such members who received notice in accordance with § 255(c) of this
title) with respect to shares for which appraisal rights are available pursuant to subsection (b) or (c) of this section that appraisal rights are available for any or all of the shares of the constituent corporations, and shall include in such
notice a copy of this section and, if 1 of the constituent corporations is a nonstock corporation, a copy of § 114 of this title. Each stockholder electing to demand the appraisal of such stockholder’s shares shall deliver to the
corporation, before the taking of the vote on the merger or consolidation, a written demand for appraisal of such stockholder’s shares; provided that a demand may be delivered to the corporation by electronic transmission if directed to an
information processing system (if any) expressly designated for that purpose in such notice. Such demand will be sufficient if it reasonably informs the corporation of the identity of the stockholder and that the stockholder intends thereby to
demand the appraisal of such stockholder’s shares. A proxy or vote against the merger or consolidation shall not constitute such a demand. A stockholder electing to take such action must do so by a separate written demand as herein provided.
Within 10 days after the effective date of such merger or consolidation, the surviving or resulting corporation shall notify each stockholder of each constituent corporation who has complied with this subsection and has not voted in favor of or
consented to the merger or consolidation of the date that the merger or consolidation has become effective; or 
 (2) If the merger or consolidation was
approved pursuant to § 228, § 251(h), § 253, or § 267 of this title, then either a constituent corporation before the effective date of the merger or consolidation or the surviving or resulting corporation within 10 days
thereafter shall notify each of the holders of any class or series of stock of such constituent corporation who are entitled to appraisal rights of the approval of the merger or consolidation and that appraisal rights are available for any or all
shares of such class or series of stock of such constituent corporation, and shall include in such notice a copy of this section and, if 1 of the constituent corporations is a nonstock corporation, a copy of § 114 of this title. Such notice
may, and, if given on or after the 

 
effective date of the merger or consolidation, shall, also notify such stockholders of the effective date of the merger or consolidation. Any stockholder entitled to appraisal rights may, within
20 days after the date of giving such notice or, in the case of a merger approved pursuant to § 251(h) of this title, within the later of the consummation of the offer contemplated by § 251(h) of this title and 20 days after the date of
giving such notice, demand in writing from the surviving or resulting corporation the appraisal of such holder’s shares; provided that a demand may be delivered to the corporation by electronic transmission if directed to an information
processing system (if any) expressly designated for that purpose in such notice. Such demand will be sufficient if it reasonably informs the corporation of the identity of the stockholder and that the stockholder intends thereby to demand the
appraisal of such holder’s shares. If such notice did not notify stockholders of the effective date of the merger or consolidation, either (i) each such constituent corporation shall send a second notice before the effective date of the
merger or consolidation notifying each of the holders of any class or series of stock of such constituent corporation that are entitled to appraisal rights of the effective date of the merger or consolidation or (ii) the surviving or resulting
corporation shall send such a second notice to all such holders on or within 10 days after such effective date; provided, however, that if such second notice is sent more than 20 days following the sending of the first notice or, in the case of a
merger approved pursuant to § 251(h) of this title, later than the later of the consummation of the offer contemplated by § 251(h) of this title and 20 days following the sending of the first notice, such second notice need only be sent to
each stockholder who is entitled to appraisal rights and who has demanded appraisal of such holder’s shares in accordance with this subsection. An affidavit of the secretary or assistant secretary or of the transfer agent of the corporation
that is required to give either notice that such notice has been given shall, in the absence of fraud, be prima facie evidence of the facts stated therein. For purposes of determining the stockholders entitled to receive either notice, each
constituent corporation may fix, in advance, a record date that shall be not more than 10 days prior to the date the notice is given, provided, that if the notice is given on or after the effective date of the merger or consolidation, the record
date shall be such effective date. If no record date is fixed and the notice is given prior to the effective date, the record date shall be the close of business on the day next preceding the day on which the notice is given. 

(e) Within 120 days after the effective date of the merger or consolidation, the surviving or resulting corporation or any stockholder who has complied with
subsections (a) and (d) of this section hereof and who is otherwise entitled to appraisal rights, may commence an appraisal proceeding by filing a petition in the Court of Chancery demanding a determination of the value of the stock of all such
stockholders. Notwithstanding the foregoing, at any time within 60 days after the effective date of the merger or consolidation, any stockholder who has not commenced an appraisal proceeding or joined that proceeding as a named party shall have the
right to withdraw such stockholder’s demand for appraisal and to accept the terms offered upon the merger or consolidation. Within 120 days after the effective date of the merger or consolidation, any stockholder who has complied with the
requirements of subsections (a) and (d) of this section hereof, upon request given in writing (or by electronic transmission directed to an information processing system (if any) expressly designated for that purpose in the notice of
appraisal), shall be entitled to receive from the corporation surviving the merger or resulting from the consolidation a statement setting forth the aggregate number of shares not voted in favor of the merger or consolidation (or, in the case of a
merger approved pursuant to § 251(h) of this title, the aggregate number of shares (other than any excluded stock (as defined in § 251(h)(6)d. of this title)) that were the subject of, and were not tendered into, and accepted for purchase
or exchange in, the offer referred to in § 251(h)(2)), and, in either case, with respect to which demands for appraisal have been received and the aggregate number of holders of such shares. Such statement

 
shall be given to the stockholder within 10 days after such stockholder’s request for such a statement is received by the surviving or resulting corporation or within 10 days after
expiration of the period for delivery of demands for appraisal under subsection (d) of this section hereof, whichever is later. Notwithstanding subsection (a) of this section, a person who is the beneficial owner of shares of such stock
held either in a voting trust or by a nominee on behalf of such person may, in such person’s own name, file a petition or request from the corporation the statement described in this subsection. 

(f) Upon the filing of any such petition by a stockholder, service of a copy thereof shall be made upon the surviving or resulting corporation, which shall
within 20 days after such service file in the office of the Register in Chancery in which the petition was filed a duly verified list containing the names and addresses of all stockholders who have demanded payment for their shares and with whom
agreements as to the value of their shares have not been reached by the surviving or resulting corporation. If the petition shall be filed by the surviving or resulting corporation, the petition shall be accompanied by such a duly verified list. The
Register in Chancery, if so ordered by the Court, shall give notice of the time and place fixed for the hearing of such petition by registered or certified mail to the surviving or resulting corporation and to the stockholders shown on the list at
the addresses therein stated. Such notice shall also be given by 1 or more publications at least 1 week before the day of the hearing, in a newspaper of general circulation published in the City of Wilmington, Delaware or such publication as the
Court deems advisable. The forms of the notices by mail and by publication shall be approved by the Court, and the costs thereof shall be borne by the surviving or resulting corporation. 

(g) At the hearing on such petition, the Court shall determine the stockholders who have complied with this section and who have become entitled to appraisal
rights. The Court may require the stockholders who have demanded an appraisal for their shares and who hold stock represented by certificates to submit their certificates of stock to the Register in Chancery for notation thereon of the pendency of
the appraisal proceedings; and if any stockholder fails to comply with such direction, the Court may dismiss the proceedings as to such stockholder. If immediately before the merger or consolidation the shares of the class or series of stock of the
constituent corporation as to which appraisal rights are available were listed on a national securities exchange, the Court shall dismiss the proceedings as to all holders of such shares who are otherwise entitled to appraisal rights unless
(1) the total number of shares entitled to appraisal exceeds 1% of the outstanding shares of the class or series eligible for appraisal, (2) the value of the consideration provided in the merger or consolidation for such total number of
shares exceeds $1 million, or (3) the merger was approved pursuant to § 253 or § 267 of this title. 
 (h) After the Court determines
the stockholders entitled to an appraisal, the appraisal proceeding shall be conducted in accordance with the rules of the Court of Chancery, including any rules specifically governing appraisal proceedings. Through such proceeding the Court shall
determine the fair value of the shares exclusive of any element of value arising from the accomplishment or expectation of the merger or consolidation, together with interest, if any, to be paid upon the amount determined to be the fair value. In
determining such fair value, the Court shall take into account all relevant factors. Unless the Court in its discretion determines otherwise for good cause shown, and except as provided in this subsection, interest from the effective date of the
merger through the date of payment of the judgment shall be compounded quarterly and shall accrue at 5% over the Federal Reserve discount rate (including any surcharge) as established from time to time during the period between the effective date of
the merger and the date of payment of the judgment. At any time before the entry of judgment in the proceedings, the surviving 

 
corporation may pay to each stockholder entitled to appraisal an amount in cash, in which case interest shall accrue thereafter as provided herein only upon the sum of (1) the difference, if
any, between the amount so paid and the fair value of the shares as determined by the Court, and (2) interest theretofore accrued, unless paid at that time. Upon application by the surviving or resulting corporation or by any stockholder
entitled to participate in the appraisal proceeding, the Court may, in its discretion, proceed to trial upon the appraisal prior to the final determination of the stockholders entitled to an appraisal. Any stockholder whose name appears on the list
filed by the surviving or resulting corporation pursuant to subsection (f) of this section and who has submitted such stockholder’s certificates of stock to the Register in Chancery, if such is required, may participate fully in all
proceedings until it is finally determined that such stockholder is not entitled to appraisal rights under this section. 
 (i) The Court shall direct the
payment of the fair value of the shares, together with interest, if any, by the surviving or resulting corporation to the stockholders entitled thereto. Payment shall be so made to each such stockholder, in the case of holders of uncertificated
stock forthwith, and the case of holders of shares represented by certificates upon the surrender to the corporation of the certificates representing such stock. The Court’s decree may be enforced as other decrees in the Court of Chancery may
be enforced, whether such surviving or resulting corporation be a corporation of this State or of any state. 
 (j) The costs of the proceeding may be
determined by the Court and taxed upon the parties as the Court deems equitable in the circumstances. Upon application of a stockholder, the Court may order all or a portion of the expenses incurred by any stockholder in connection with the
appraisal proceeding, including, without limitation, reasonable attorney’s fees and the fees and expenses of experts, to be charged pro rata against the value of all the shares entitled to an appraisal. 

(k) From and after the effective date of the merger or consolidation, no stockholder who has demanded appraisal rights as provided in subsection (d) of
this section shall be entitled to vote such stock for any purpose or to receive payment of dividends or other distributions on the stock (except dividends or other distributions payable to stockholders of record at a date which is prior to the
effective date of the merger or consolidation); provided, however, that if no petition for an appraisal shall be filed within the time provided in subsection (e) of this section, or if such stockholder shall deliver to the surviving or
resulting corporation a written withdrawal of such stockholder’s demand for an appraisal and an acceptance of the merger or consolidation, either within 60 days after the effective date of the merger or consolidation as provided in subsection
(e) of this section or thereafter with the written approval of the corporation, then the right of such stockholder to an appraisal shall cease. Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery shall be dismissed
as to any stockholder without the approval of the Court, and such approval may be conditioned upon such terms as the Court deems just; provided, however that this provision shall not affect the right of any stockholder who has not commenced an
appraisal proceeding or joined that proceeding as a named party to withdraw such stockholder’s demand for appraisal and to accept the terms offered upon the merger or consolidation within 60 days after the effective date of the merger or
consolidation, as set forth in subsection (e) of this section. 
 (l) The shares of the surviving or resulting corporation to which the shares of such
objecting stockholders would have been converted had they assented to the merger or consolidation shall have the status of authorized and unissued shares of the surviving or resulting corporation. 

 EXHIBIT C 

STOCKHOLDER AGREEMENTS 
 *
* *EX-10.2

 Exhibit 10.2 

REGISTRATION RIGHTS AND LOCK-UP AGREEMENT 

This Registration Rights and Lock-Up Agreement (this “Agreement”) is made and entered
into as of March 17, 2022 by and among Brookline Capital Acquisition Corp., a Delaware corporation (the “Company”), and the parties listed on Schedule A hereto (each, a “Holder” and collectively, the
“Holders”). Any capitalized term used but not defined herein will have the meaning ascribed to such term in the Business Combination Agreement (as defined below). 

RECITALS 
 WHEREAS, the
Company, Project Barolo Merger Sub, Inc., a Delaware corporation (“Merger Sub”), and Apexigen, Inc., a Delaware corporation (“Apexigen”) are party to that certain Business Combination Agreement, dated as of March
17, 2022 (the “Business Combination Agreement”), pursuant to which, on the Closing Date (as defined in the Business Combination Agreement), Merger Sub will merge with and into Apexigen (the “Merger”), with Apexigen
surviving the Merger as a wholly owned subsidiary of the Company; 
 WHEREAS, pursuant to the Business Combination Agreement, the Company is
issuing shares of the Company’s common stock, par value $0.0001 per share (the “Common Stock”), to the Holders designated on Schedule A hereto; and 

WHEREAS, the Company desires to set forth certain matters regarding the ownership of the Registrable Securities (as defined below) by the
Holders. 
 NOW, THEREFORE, in consideration of the mutual covenants and agreements set forth herein, and for other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 
 ARTICLE I 

DEFINITIONS 

Section 1.1 Definitions. For purposes of this Agreement, the terms (and any variations thereof) used in this
Agreement shall be either as defined in the Preamble or Recitals, or shall have the meanings set forth below: 
 “Adverse
Disclosure” means any public disclosure of material non-public information, which disclosure, in the good faith judgment of the Chief Executive Officer, Chief Financial Officer or Chief Operating
Officer of the Company, after consultation with outside counsel to the Company, (i) would be required to be made in any Registration Statement or Prospectus in order for the applicable Registration Statement or Prospectus not to contain any
untrue statement of a material fact or omit to state a material fact necessary to make the statements contained therein (in the case of any prospectus and any preliminary prospectus, in the light of the circumstances under which they were made) not
misleading, (ii) would not be required to be made at such time if the Registration Statement were not being filed, and (iii) the Company has a bona fide business purpose for not making such information public. 

“Board” shall mean the Board of Directors of the Company. 

 “Business Day” means a day other than Saturday, Sunday or other day on
which commercial banks in New York, New York are authorized or required by law to close. 
 “Change in Control” means,
following the closing of the Merger, the transfer (whether by tender offer, merger, stock purchase, consolidation or other similar transaction), in one transaction or a series of related transactions, to a person or group of affiliated persons of
the Company’s voting securities if, after such transfer, such transferee or group of affiliated transferees would hold more than 50% of outstanding voting securities of the Company (or surviving entity) or would otherwise have the power to
control the Board or to direct the operations of the Company. 
 “Commission” means the Securities and Exchange Commission,
or any other federal agency then administering the Securities Act or the Exchange Act. 
 “Demand Registration” has the
meaning set forth in Section 2.1.1. 
 “Demanding Holder” has the meaning set forth in
Section 2.1.1. 
 “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the
rules and regulations of the Commission promulgated thereunder, all as the same shall be in effect at the time. 

“Form S-1” has the meaning set forth in
Section 2.1.1. 
 “Form S-1 Shelf” has
the meaning set forth in Section 2.3.1. 

“Form S-3 Shelf” has the meaning set forth in
Section 2.3.1. 
 “Exchange Act” shall mean the Securities Exchange Act of 1934, as it may be
amended from time to time. 
 “Lock-up Period” means, with respect to the
Registrable Securities held by the Significant Holders, (A) for half of such Registrable Securities, the period ending on the earlier of (i) the date that is six months after the date of the closing of the Merger pursuant to the Business
Combination Agreement or (ii) the date on which, subsequent to the closing of the Merger, the last sale price of the Common Stock (x) equals or exceeds $12.50 per share (as adjusted for stock splits, stock dividends, reorganizations,
recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing after the closing of the Merger, and (B) for the remaining half of such Registrable Securities, such
Registrable Securities may not be transferred, assigned or sold until six months after the date of the closing of the Merger pursuant to the Business Combination Agreement; or earlier, in either case, if, subsequent to the of the closing of the
Merger pursuant to the Business Combination Agreement, the date 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; provided that in the sole discretion of the majority of the independent members of the Board, the Lock-Up Period may end earlier than
as provided herein upon written notice to the Significant Holders. 
 “Maximum Number of Securities” has the meaning set
forth in Section 2.1.4. 

  
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 “Minimum Takedown Threshold” has the meaning set forth in
Section 2.3.1. 
 “Misstatement” means an untrue statement of a material fact or an omission to
state a material fact required to be stated in a Registration Statement or Prospectus, or necessary to make the statements in a Registration Statement or Prospectus in the light of the circumstances under which they were made not misleading. 

“Notices” has the meaning set forth in Section 6.2. 

“Piggyback Registration” has the meaning set forth in Section 2.2.1. 

“Pro Rata” has the meaning set forth in Section 2.1.4. 

“Prospectus” shall mean the prospectus included in any Registration Statement, as supplemented by any and all prospectus
supplements and as amended by any and all post-effective amendments and including all material incorporated by reference in such prospectus. 

“Registrable Securities” means any equity securities (including the shares of Common Stock issued or issuable upon the
exercise or conversion of any such equity security) of the Company outstanding immediately following consummation of the Merger that are held by a Holder. Registrable Securities include any warrants, shares of capital stock or other securities of
the Company issued as a dividend or other distribution with respect to or in exchange for or in replacement of any of the securities described in the prior sentence. As to any particular Registrable Security, such security shall cease to be a
Registrable Security when: (a) a Registration Statement with respect to the sale of such security shall have become effective under the Securities Act and such security shall have been sold, transferred, disposed of or exchanged in accordance
with such Registration Statement; (b) such security shall have been otherwise transferred, a new certificate for such security not bearing a legend restricting further transfer shall have been delivered by the Company and subsequent public
distribution of such security shall not require registration under the Securities Act; (c) such security shall have ceased to be outstanding; or (d) such security is freely saleable under Rule 144 without volume limitations. 

“Registration” means a registration effected by preparing and filing a registration statement or similar document in
compliance with the requirements of the Securities Act, and the applicable rules and regulations promulgated thereunder, and such registration statement becoming effective. 

“Registration Expenses” means the
out-of-pocket expenses of a Registration, including, without limitation, the following: 

(A) all registration and filing fees (including fees with respect to filings required to be made with the Financial Industry Regulatory
Authority and any securities exchange on which the Common Stock is then listed); 
 (B) fees and expenses of compliance with securities or
blue sky laws (including reasonable fees and disbursements of counsel for the Underwriters in connection with blue sky qualifications of Registrable Securities); 

  
 3 

 (C) printing, messenger, telephone and delivery expenses; 

(D) reasonable fees and disbursements of counsel for the Company; 

(E) reasonable fees and disbursements of all independent registered public accountants of the Company incurred specifically in connection
with such Registration; and 
 (F) reasonable fees and expenses of one (1) legal counsel selected by the majority-in-interest of the Demanding Holders initiating a Demand Registration to be registered for offer and sale in the applicable Registration. 

“Registration Statement” means a registration statement filed by the Company with the Commission in compliance with the
Securities Act and the rules and regulations promulgated thereunder for a public offering and sale of securities (other than a registration statement on Form S-4 or Form S-8, or their successors, or any registration statement covering only
securities proposed to be issued in exchange for securities or assets of another entity). 
 “Requesting Holder” has the
meaning set forth in Section 2.1.1. 
 “Rule 144” means Rule 144 promulgated under the Securities
Act. 
 “Rule 415” has the meaning set forth in Section 2.3.1. 

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations of the Commission promulgated
thereunder, all as the same shall be in effect at the time. 
 “Shelf” has the meaning set forth in
Section 2.3.1. 
 “Shelf Registration” has the meaning set forth in
Section 2.3.1. 
 “Shelf Underwriting Request” has the meaning set forth in
Section 2.3.1. 
 “Significant Holder” means each of the Holders listed on Schedule B
attached hereto, which schedule may be updated from time to time to include additional Holders who become a party to this Agreement. 

“Transfer” means to, directly or indirectly, sell, transfer, assign, pledge, encumber, hypothecate or similarly dispose of,
either voluntarily or involuntarily, or to enter into any contract, option or other arrangement or understanding with respect to the sale, transfer, assignment, pledge, encumbrance, hypothecation or similar disposition of, any interest owned by a
person or any interest (including a beneficial interest) in, or the ownership, control or possession of, any interest owned by a person. 

“Underwriter” means a securities dealer who purchases any Registrable Securities as principal in an underwritten offering and
not as part of such dealer’s market-making activities. 

  
 4 

 “Underwritten Registration” or “Underwritten Offering”
means a Registration in which securities of the Company are sold to an Underwriter in a firm commitment underwriting for distribution to the public. 

ARTICLE II 
 REGISTRATION

 Section 2.1 Demand Registration 

2.1.1 Request for Registration. Subject to the provisions of Section 2.1.4,
Section 2.3 and Section 2.4 hereof, at any time and from time to time on or after the closing of the Merger, the Holders holding at least a majority in interest of the then-outstanding number of
Registrable Securities held by all the Holders (such Holders, the “Demanding Holders”), may make a written demand for Registration under the Securities Act of all or part of their Registrable Securities, which written demand shall
describe the amount and type of securities to be included in such Registration and the intended method(s) of distribution thereof (such written demand a “Demand Registration”). The Company shall, within ten (10) days of the
Company’s receipt of the Demand Registration, notify, in writing, all other Holders of Registrable Securities of such demand, and each Holder of Registrable Securities who thereafter wishes to include all or a portion of such Holder’s
Registrable Securities in the Demand Registration (each such Holder that includes all or a portion of such Holder’s Registrable Securities in such Registration, a “Requesting Holder”) shall so notify the Company, in writing,
within five (5) days after the receipt by the Holder of the notice from the Company. Upon receipt by the Company of any such written notification from a Requesting Holder(s) to the Company, such Requesting Holder(s) shall be entitled to have
their Registrable Securities included in a Registration pursuant to a Demand Registration and the Company shall effect, as soon thereafter as practicable, but not more than sixty (60) days immediately after the Company’s receipt of the
Demand Registration (or 120 days if the Commission notifies the Company that it will “review” the Registration Statement for such Registration), the Registration of all Registrable Securities requested by the Demanding Holders and
Requesting Holders pursuant to such Demand Registration. Under no circumstances shall the Company be obligated to effect more than an aggregate of two (2) Registrations pursuant to a Demand Registration under this
Section 2.1.1 initiated by Holders. 
 2.1.2 Effective Registration. Notwithstanding the provisions of
Section 2.1.1 above or any other part of this Agreement, a Registration pursuant to a Demand Registration shall not count as a Registration unless and until (i) a Form S-1 or any similar long-form registration
statement that may be available at such time (“Form S-1”) filed with the Commission in connection with the Registration has been declared effective by the Commission and
(ii) the Company has complied with all of its obligations under this Agreement with respect thereto; provided, that if, after such Registration Statement has been declared effective, the offering of Registrable Securities pursuant to a
Demand Registration is interfered with by any stop order or injunction of the Commission or any other governmental agency or court, the Registration Statement with respect to such Demand Registration will be deemed not to have been declared
effective, unless and until, (i) such stop order or injunction is removed, rescinded or otherwise terminated, and (ii) a majority-in-interest of the Demanding
Holders initiating such Demand Registration thereafter affirmatively elect to continue with such Registration and accordingly notify the Company in writing of such election, which notice shall be received by the Company not later than five
(5) days after the removal of any such stop order or injunction; provided, further, that the Company shall not be obligated to file a second Registration Statement until a Registration Statement that has been previously filed
pursuant to a Demand Registration becomes effective or is terminated. 

  
 5 

 2.1.3 Underwritten Offering. Subject to the provisions of
Section 2.1.4 and Section 2.4 hereof, if a majority-in-interest of the Demanding Holders so advise the Company as
part of their Demand Registration that the offering of Registrable Securities pursuant thereto shall be in the form of an Underwritten Offering, then the right of such Demanding Holder or Requesting Holder (if any) to include its Registrable
Securities in such Registration shall be conditioned upon such Holder’s participation in such Underwritten Offering and the inclusion of such Holder’s Registrable Securities in such Underwritten Offering to the extent provided herein. All
such Holders proposing to distribute their Registrable Securities through an Underwritten Offering under this Section 2.1.3 shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for
such Underwritten Offering by the Company, which Underwriter(s) shall be reasonably acceptable to a majority-in-interest of the Demanding Holders initiating the Demand
Registration. 
 2.1.4 Reduction of Underwritten Offering. If the managing Underwriter(s) for a Demand Registration that is to be an
Underwritten Offering, in good faith, advises the Company, the Demanding Holders and the Requesting Holders in writing that the dollar amount or number of Registrable Securities which the Demanding Holders and the Requesting Holders (if any) desire
to sell, taken together with all other shares of Common Stock or other equity securities which the Company desires to sell and the shares of Common Stock, if any, as to which a Registration has been requested pursuant to separate written contractual
piggy-back registration rights held by other stockholders of the Company who desire to sell, exceeds the maximum dollar amount or maximum number of equity securities that can be sold in the Underwritten Offering without adversely affecting the
proposed offering price, the timing, the distribution method, or the probability of success of such Underwritten Offering (such maximum dollar amount or maximum number of securities, as applicable, the “Maximum Number of
Securities”), then the Company shall include in such Underwritten Offering, as follows: (i) first, the Registrable Securities of the Demanding Holders and the Requesting Holders (if any) (pro rata based on the respective number of
Registrable Securities that each Demanding Holder and Requesting Holder (if any) has requested be included in such Underwritten Registration and the aggregate number of Registrable Securities that the Demanding Holders and Requesting Holders have
requested be included in such Underwritten Registration (such proportion is referred to herein as “Pro Rata”)) that can be sold without exceeding the Maximum Number of Securities; (ii) second, to the extent that the Maximum
Number of Securities has not been reached under the foregoing clause (i), the Registrable Securities of Holders (Pro Rata, based on the respective number of Registrable Securities that each such Holder has so requested exercising their rights to
register their Registrable Securities pursuant to Section 2.2.1 hereof) that can be sold without exceeding the Maximum Number of Securities; (iii) third, to the extent that the Maximum Number of Securities has not been
reached under the foregoing clauses (i) and (ii), the Common Stock or other equity securities of other persons or entities that the Company is obligated to register in a Registration pursuant to separate written contractual arrangements that pre-dates this Agreement with such persons and that can be sold without exceeding the Maximum Number of Securities; (iv) fourth, to the extent that the Maximum Number of Securities has not been reached under
the foregoing clauses (i), (ii) and 

  
 6 

 
(iii), the Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; and (v) fifth, to the extent that
the Maximum Number of Securities has not been reached under the foregoing clauses (i), (ii), (iii) and (iv), the Common Stock or other equity securities of other persons or entities that the Company is obligated to register in a Registration
pursuant to separate written contractual arrangements with such persons and that can be sold without exceeding the Maximum Number of Securities. 

2.1.5 Demand Registration Withdrawal. A
majority-in-interest of the Demanding Holders initiating a Demand Registration pursuant to a Registration under Section 2.1.1 shall have the
right to withdraw from a Registration pursuant to such Demand Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter(s) (if any) of their intention to withdraw from such Registration prior to the
effectiveness of the Registration Statement filed with the Commission with respect to the Registration of their Registrable Securities pursuant to such Demand Registration. Notwithstanding anything to the contrary in this Agreement, if with respect
to a Demand Registration, a majority-in-interest of the Demanding Holders initiating a Demand Registration so withdraw from a Registration pursuant to such Demand
Registration, such Registration shall not count as a Demand Registration provided for in Section 2.1.1 and the Company shall be responsible for the Registration Expenses incurred in connection with a Registration pursuant
to a Demand Registration prior to its withdrawal under this Section 2.1.5. 

Section 2.2 Piggy-Back Registration. 

2.2.1 Piggy-Back Rights. If, at any time on or after the closing of the Merger, the Company proposes to file a Registration Statement
under the Securities Act with respect to an offering of equity securities, or securities or other obligations exercisable or exchangeable for, or convertible into, equity securities, by the Company for its own account or for the account of
stockholders of the Company (or by the Company and by stockholders of the Company including, without limitation, pursuant to Section 2.1), other than a Registration Statement (i) filed in connection with any employee
stock option or other benefit plan, (ii) for an exchange offer or offering of securities solely to the Company’s existing stockholders, (iii) for an offering of debt that is convertible into equity securities of the Company,
(iv) filed pursuant to Section 2.3, or (v) for a dividend reinvestment plan, then the Company shall (x) give written notice of such proposed filing to all of the Holders of Registrable Securities as soon as
practicable but in no event less than ten (10) days before the anticipated filing date, which notice shall describe the amount and type of securities to be included in such offering, the intended method(s) of distribution, and the name of the
proposed managing Underwriter or Underwriters, if any, of the offering, and (y) offer to all of the Holders of Registrable Securities in such notice the opportunity to register the sale of such number of shares of Registrable Securities as such
holders may request in writing within five (5) days following receipt of such notice (a “Piggyback Registration”). The Company shall, in good faith, cause such Registrable Securities to be included in such Registration and
shall use its reasonable best efforts to cause the managing Underwriter(s) of a proposed Underwritten Offering to permit the Registrable Securities requested to be included in such Piggyback Registration on the same terms and conditions as any
similar securities of the Company and to permit the sale or other disposition of such Registrable Securities in accordance with the intended method(s) of distribution thereof. All Holders of Registrable Securities proposing to distribute their
Registrable Securities through a Piggyback Registration that involves an Underwriter(s) shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Piggyback Registration. 

  
 7 

 2.2.2 Reduction of Piggyback Registration. If the managing Underwriter(s) for a
Piggyback Registration that is to be an Underwritten Offering, in good faith, advises the Company and the Holders of Registrable Securities participating in the Piggyback Registration in writing that the dollar amount or number of securities which
the Company desires to sell, taken together with (i) the Common Stock or other equity securities, if any, as to which Registration has been demanded pursuant to separate written contractual arrangements with persons or entities other than the
Holders of Registrable Securities hereunder, (ii) the Registrable Securities as to which Registration has been requested under this Section 2.2, and (iii) the Common Stock or other equity securities, if any, as to
which Registration has been requested pursuant to separate written contractual piggyback registration rights of other stockholders of the Company, exceeds the Maximum Number of Securities, then: 

(i) If the Registration is undertaken for the Company’s account, the Company shall include in any such Registration (A) first, the
Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the
foregoing clause (A) , the Registrable Securities of Holders exercising their rights to register their Registrable Securities pursuant to Section 2.2.1 hereof, Pro Rata, which can be sold without exceeding the Maximum
Number of Securities; and (C) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A) and (B), the Common Stock, if any, as to which Registration has been requested pursuant to
written contractual piggyback registration rights of other stockholders of the Company not otherwise covered above, which can be sold without exceeding the Maximum Number of Securities; and 

(ii) If the Registration is pursuant to a request by persons or entities other than the Holders of Registrable Securities, then the Company
shall include in any such Registration (A) first, the Common Stock or other equity securities, if any, of such requesting persons or entities, other than the Holders of Registrable Securities, which can be sold without exceeding the Maximum
Number of Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A), the Common Stock or other equity securities that the Company desires to sell, which can be sold without
exceeding the Maximum Number of Securities; (C) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A) and (B), the Registrable Securities of Holders exercising their rights to
register their Registrable Securities pursuant to Section 2.2.1, Pro Rata based on the number of Registrable Securities that each Holder has requested be included in such Underwritten Registration and the aggregate number
of Registrable Securities that the Holders have requested to be included in such Underwritten Registration, which can be sold without exceeding the Maximum Number of Securities; and (D) fourth, to the extent that the Maximum Number of
Securities has not been reached under the foregoing clauses (A), (B) and (C), the Common Stock or other equity securities for the account of other persons or entities that the Company is obligated to register pursuant to separate written
contractual arrangements with such persons or entities, which can be sold without exceeding the Maximum Number of Securities. 

  
 8 

 2.2.3 Piggyback Registration Withdrawal. Any Holder of Registrable Securities shall
have the right to withdraw from a Piggyback Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter(s) of his, her or its intention to withdraw from such Piggyback Registration prior to the
effectiveness of the Registration Statement filed with the Commission with respect to such Piggyback Registration. The Company (whether on its own good faith determination or as the result of a request for withdrawal by persons pursuant to separate
written contractual obligations) may withdraw a Registration Statement filed with the Commission in connection with a Piggyback Registration at any time prior to the effectiveness of such Registration Statement. Notwithstanding anything to the
contrary in this Agreement, the Company shall be responsible for the Registration Expenses incurred in connection with the Piggyback Registration prior to its withdrawal under this Section 2.2.3. 

2.2.4 Unlimited Piggyback Registration Rights. For purposes of clarity, any Registration effected pursuant to
Section 2.2 hereof shall not be counted as a Registration pursuant to a Demand Registration effected under Section 2.1 hereof or an Underwritten Offering pursuant to a Shelf Underwriting Request
effected under Section 2.3 hereof. 
 2.2.5 Right to Terminate Registration. The Company shall have the right to
terminate or withdraw any registration initiated by it under this Section 2.2 prior to the effectiveness of such registration whether or not any Holder of Registrable Securities has elected to include securities in such
registration. 
 Section 2.3 Shelf Registration. 

2.3.1 Initial Registration. The Company shall file a shelf registration statement under Rule 415 of the Securities Act (or any
successor rule promulgated thereafter by the Commission) (“Rule 415”) on Form S-1 (the “Form S-1 Shelf”) within forty five
(45) days of the closing of the Merger covering the resale of all Registrable Securities on a delayed or continuous basis (a “Shelf Registration”), and use commercially reasonable efforts to cause such Registration Statement to
be declared effective as soon as practicable thereafter and no later than the earlier of (x) the 60th calendar day (or 120th calendar day if the Commission notifies the Company that it will “review” the Registration Statement)
following the filing date and (y) the tenth (10th) Business Day after the date the Company is notified (orally or in writing, whichever is earlier) by the Commission that the Registration Statement will not be “reviewed” or will not
be subject to further review. If, at any time the Company shall have qualified for the use of a Registration Statement on Form S-3 (the “Form S-3 Shelf”
and, together with the Form S-1 Shelf, each a “Shelf”) or any other form which permits incorporation of substantial information by reference to other documents filed by the Company with the
Commission and at such time the Company has an outstanding Form S-l Shelf, then the Company shall use its commercially reasonable efforts to, as soon as reasonably practical, convert such outstanding Form S-l Shelf into a Form S-3 Shelf. Such Shelf shall provide for the resale of the Registrable Securities included therein pursuant to any method or combination of methods
legally available to, and requested by, any Holder named therein. The Company shall use its commercially reasonable efforts to maintain the Shelf in accordance with the terms hereof, and shall prepare and file with the Commission such amendments,
including post-effective amendments, and supplements as may be necessary to keep a Shelf continuously effective and available for use to permit all Holders named therein to sell their Registrable Securities included therein and in compliance

  
 9 

 
with the provisions of the Securities Act until such time as there are no longer any Registrable Securities, subject in each case to the provisions of this Agreement that permit the Company to
suspend the use of the Registration Statement in the circumstances, and subject to the terms and conditions, set forth in those provisions. No filing of a Form S-1 Shelf or a Form S-3 Shelf, as applicable, pursuant to this Section 2.3 shall be counted as a Demand Registration effected pursuant to Section 2.1. Notwithstanding anything to the contrary herein, to the
extent there is an effective Shelf under this Section 2.3, covering a Holder’s or Holders’ Registrable Securities, such Holder or Holders shall not have rights to make a Demand Registration with respect to
Section 2.1. Notwithstanding anything to the contrary herein, to the extent there is an effective Shelf under this Section 2.3, covering a Holder’s or Holders’ Registrable Securities, and such Holder or Holders
qualify for and wish to request an Underwritten Offering from such Shelf (a “Shelf Underwriting Request”), such Underwritten Offering shall follow the procedures and limitations of Section 2.1 (including
Section 2.1.3 and Section 2.1.4) but such Underwritten Offering shall be made from the Shelf and shall count against the number of Demand Registrations that may be made by the applicable Holder(s) pursuant to
Section 2.1.1; provided that, in the event that the Underwritten Offering is being made from a Form S-3 Shelf, (i) the period of time for the Company to notify all other Holders of Registrable
Securities of the Company’s receipt of the applicable Demand Registration shall be reduced from ten (10) days (as set forth in Section 2.1.1) to two (2) Business Days and (ii) the period of time that the Holders have
to respond to such notice shall be reduced from five (5) days (as set forth in Section 2.1.1) to three (3) Business Days. Notwithstanding anything to the contrary in Section 2.1.1 or this Section 2.3.1
the Company shall only be obligated to effect an Underwritten Offering pursuant to such Shelf Underwriting Request if such Underwritten Offering shall include Registrable Securities proposed to be sold by the Demanding Holder, either individually or
together with other Demanding Holders, (x) with a total offering price reasonably expected to exceed, in the aggregate, $10,000,000 or (y) that constitute all of the remaining Registrable Securities held by the Demanding Holder ((x) or
(y), as applicable, the “Minimum Takedown Threshold”). Notwithstanding anything to the contrary in this Agreement, the Company may effect any Underwritten Offering pursuant to any then effective Registration Statement, including a
Form S-3, that is then available for such offering. 
 2.3.2 Removal of Holders. The Company
shall have the right to remove any persons no longer holding Registrable Securities from the Shelf or any other shelf registration statement by means of a post-effective amendment. 

2.3.3 Right to Register Additional Common Stock. The Company shall have the right to register any other Common Stock or securities of
the Company on any Registration Statement, including the Shelf. 
 Section 2.4 Restrictions on
Registration Rights. If (A) during the period starting with the date sixty (60) days prior to the Company’s good faith estimate of the date of the filing of, and ending on a date one hundred and twenty (120) days after the
effective date of, a Company initiated Registration and provided that the Company has delivered written notice to the Holders prior to receipt of a Demand Registration pursuant to Section 2.1.1 and it continues to actively
employ, in good faith, all reasonable efforts to cause the applicable Registration Statement to become effective; (B) the Holders have requested an Underwritten Registration and the Company and the Holders are unable to obtain the commitment of
underwriters to firmly underwrite the offer; or 

  
 10 

 
(C) in the good faith judgment of the Board such Registration would be seriously detrimental to the Company and the Board concludes as a result that it is essential to defer the filing of
such Registration Statement at such time, then in each case the Company shall furnish to such Holders a certificate signed by the Chairman of the Board or the Chief Executive Officer stating that in the good faith judgment of the Board it would be
seriously detrimental to the Company for such Registration Statement to be filed in the near future and that it is therefore essential to defer the filing of such Registration Statement. In such event, the Company shall have the right to defer such
filing for a period of not more than sixty (60) days; provided, that the Company may not defer its obligation in this manner more than twice or for more than a total of ninety (90) days (in each case counting deferrals initiated
pursuant to (A), (B) and (C) in the aggregate) in any 12-month period. 
 ARTICLE III 

REGISTRATION PROCEDURES 

Section 3.1 General Procedures. If at any time on or after the closing of the Merger the Company is
required to effect the registration of any Registrable Securities pursuant to Article II, the Company shall use its reasonable best efforts to effect the Registration to permit the sale of such Registrable Securities in
accordance with the intended plan of distribution thereof, and pursuant thereto the Company shall, as expeditiously as practicable and in connection with any such request: 

3.1.1 prepare and file with the Commission as soon as practicable a Registration Statement with respect to such Registrable Securities and use
its reasonable best efforts to cause such Registration Statement to become effective and remain effective until all Registrable Securities covered by such Registration Statement have been sold; 

3.1.2 prepare and file with the Commission such amendments and post-effective amendments to the Registration Statement, and such supplements
to the Prospectus, as may be reasonably requested by the Holders or any Underwriter of Registrable Securities or as may be required by the rules, regulations or instructions applicable to the registration form used by the Company or by the
Securities Act or rules and regulations thereunder to keep the Registration Statement effective until all Registrable Securities covered by such Registration Statement are sold in accordance with the intended plan of distribution set forth in such
Registration Statement or supplement to the Prospectus; 
 3.1.3 prior to filing a Registration Statement or Prospectus, or any amendment or
supplement thereto, furnish without charge to the Underwriters, if any, and the Holders of Registrable Securities included in such Registration, and such Holders’ legal counsel, copies of such Registration Statement as proposed to be filed,
each amendment and supplement to such Registration Statement (in each case including all exhibits thereto and documents incorporated by reference therein), the Prospectus included in such Registration Statement (including each preliminary
Prospectus), and such other documents as the Underwriters and the Holders of Registrable Securities included in such Registration or the legal counsel for any such Holders may request in order to facilitate the disposition of the Registrable
Securities owned by such Holders; 

  
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 3.1.4 prior to any public offering of Registrable Securities, use its reasonable best
efforts to (i) register or qualify the Registrable Securities covered by the Registration Statement under such securities or “blue sky” laws of such jurisdictions in the United States as the Holders of Registrable Securities included
in such Registration Statement (in light of their intended plan of distribution) may request and (ii) take such action necessary to cause such Registrable Securities covered by the Registration Statement to be registered with or approved by
such other governmental authorities as may be necessary by virtue of the business and operations of the Company and do any and all other acts and things that may be necessary or advisable to enable the Holders of Registrable Securities included in
such Registration Statement to consummate the disposition of such Registrable Securities in such jurisdictions; provided, that the Company shall not be required to qualify generally to do business in any jurisdiction where it would not
otherwise be required to qualify or take any action to which it would be subject to general service of process or taxation in any such jurisdiction where it is not then otherwise so subject; 

3.1.5 cause all such Registrable Securities to be listed on each securities exchange or automated quotation system on which similar securities
issued by the Company are then listed; 
 3.1.6 provide a transfer agent or warrant agent, as applicable, and registrar for all such
Registrable Securities no later than the effective date of such Registration Statement; 
 3.1.7 advise each seller of such Registrable
Securities, promptly after it shall receive notice or obtain knowledge thereof, of the issuance of any stop order by the Commission suspending the effectiveness of such Registration Statement or the initiation or threatening of any proceeding for
such purpose and promptly use its reasonable best efforts to prevent the issuance of any stop order or to obtain its withdrawal if such stop order should be issued; 

3.1.8 advise each Holder of Registrable Securities covered by such Registration Statement, promptly after the Company receives notice thereof,
of the time when such registration statement has been declared effective or a supplement to any Prospectus forming a part of such registration statement has been filed; 

3.1.9 at least five (5) days prior to the filing of any Registration Statement or Prospectus or any amendment or supplement to such
Registration Statement or Prospectus or any document that is to be incorporated by reference into such Registration Statement or Prospectus, furnish a copy thereof to each seller of such Registrable Securities or its counsel; 

3.1.10 notify the Holders at any time when a Prospectus relating to such Registration Statement is required to be delivered under the
Securities Act, of the happening of any event as a result of which the Prospectus included in such Registration Statement, as then in effect, includes a Misstatement, and then to correct such Misstatement as set forth in
Section 3.4 hereof; 
 3.1.11 permit a representative of the Holders (such representative to be selected by a majority-in-interest of the participating Holders), the Underwriters, if any, and any attorney or accountant retained by such Holders or Underwriter to participate, at each
such person’s own expense, in the preparation of the Registration Statement, and cause the Company’s officers, directors and employees to supply all information reasonably requested by any such representative, Underwriter, attorney or
accountant in connection with the Registration; provided, that such representatives or Underwriters enter into a confidentiality agreement, in form and substance reasonably satisfactory to the Company, prior to the release or disclosure of
any such information; 

  
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 3.1.12 obtain a “comfort” letter from the Company’s independent registered
public accountants in the event of an Underwritten Registration, in customary form and covering such matters of the type customarily covered by “comfort” letters as the managing Underwriter may reasonably request, and may be found
reasonably satisfactory to a majority-in-interest of the participating Holders; 

3.1.13 on the date the Registrable Securities are delivered for sale pursuant to such Registration, obtain an opinion, dated such date, of
counsel representing the Company for the purposes of such Registration, addressed to the Holders, the placement agent or sales agent, if any, and the Underwriters, if any, covering such legal matters with respect to the Registration in respect of
which such opinion is being given as the Holders, placement agent, sales agent, or Underwriter may reasonably request and as are customarily included in such opinions and negative assurance letters, and may be found reasonably satisfactory to a
majority in interest of the participating Holders; 
 3.1.14 in the event of any Underwritten Offering, enter into and perform its
obligations under an underwriting agreement, in usual and customary form, with the managing Underwriters of such offering; 
 3.1.15 make
available to its security holders, as soon as reasonably practicable, an earnings statement covering the period of at least twelve (12) months beginning with the first day of the Company’s first full calendar quarter after the effective
date of the Registration Statement which satisfies the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any successor rule promulgated thereafter by the Commission); 

3.1.16 if the Registration involves the Registration of Registrable Securities involving gross proceeds in excess of $25,000,000, use its
reasonable efforts to make available senior executives of the Company to participate in customary “road show” presentations that may be reasonably requested by the Underwriter in any Underwritten Offering; and 

3.1.17 otherwise, in good faith, cooperate reasonably with, and take such customary actions as may reasonably be requested by the Holders, in
connection with such Registration. 
 Section 3.2 Registration Expenses. Except as otherwise provided
herein, the Registration Expenses of all Registrations shall be borne by the Company. It is acknowledged by the Holders that the Holders shall bear all incremental selling expenses relating to the sale of Registrable Securities, such as
Underwriters’ commissions and discounts, brokerage fees, Underwriter marketing costs and, other than as set forth in the definition of “Registration Expenses,” all reasonable fees and expenses of any legal counsel representing
the Holders or such Holder. 

  
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 Section 3.3 Requirements for Participation in Underwritten
Offerings. No person may participate in any Underwritten Offering for equity securities of the Company pursuant to a Registration initiated by the Company hereunder unless such person or entity(i) agrees to sell such person’s or
entity’s securities on the basis provided in any underwriting arrangements approved by the Company and (ii) completes and executes all customary questionnaires, powers of attorney, indemnities,
lock-up agreements, underwriting agreements and other customary documents as may be reasonably required under the terms of such underwriting arrangements. 

Section 3.4 Suspension of Sales; Adverse Disclosure. Upon receipt of written notice from the Company that a
Registration Statement or Prospectus contains a Misstatement, each of the Holders shall forthwith discontinue disposition of Registrable Securities until such Holder has received copies of a supplemented or amended Prospectus correcting the
Misstatement (it being understood that the Company hereby covenants to prepare and file such supplemented or amended Prospectus as soon as practicable after the time of such notice), or until such Holder is advised in writing by the Company that the
use of the Prospectus may be resumed. If the filing, initial effectiveness or continued use of a Registration Statement in respect of any Registration at any time (a) would require the Company to make an Adverse Disclosure, (b) would
require the inclusion in such Registration Statement of financial statements that are unavailable to the Company for reasons beyond the Company’s control, or (c) in the good faith judgment of the Board, which judgment shall be documented
in writing and provided to the Holders in the form of a written certificate signed by the Chairman of the Board or the Chief Executive Officer, the Company may, upon giving prompt written notice of such action to the Holders, delay the filing or
initial effectiveness of, or suspend use of, such Registration Statement for the shortest period of time, but in no event more than sixty (60) days, determined in good faith by the Company to be necessary for such purpose. In the event the
Company exercises its rights under the preceding sentence, the Holders agree to suspend, immediately upon their receipt of the notice referred to above, their use of the Prospectus relating to any Registration in connection with any sale or offer to
sell Registrable Securities. The Company shall immediately notify the Holders of the expiration of any period during which it exercised its rights under this Section 3.4, and upon the expiration of such period the Holders
shall be entitled to resume the use of any such Prospectus in connection with any sale or offer to sell Registrable Securities, and upon the expiration of such period the Holders shall be entitled to resume the use of any such Prospectus in
connection with any sale or offer to sell Registrable Securities. 
 Section 3.5 Reporting Obligations. As long as
any Holder shall own Registrable Securities, the Company, at all times while it shall be reporting under the Exchange Act, covenants to file timely (or obtain extensions in respect thereof and file within the applicable grace period) all reports
required to be filed by the Company after the date hereof pursuant to Sections 13(a) or 15(d) of the Exchange Act and to promptly furnish the Holders with true and complete copies of all such filings. The Company
further covenants that it shall take such further action as any Holder may reasonably request, all to the extent required from time to time to enable such Holder to sell Registrable Securities held by such Holder without registration under the
Securities Act within the limitation of the exemptions provided by Rule 144 promulgated under the Securities Act (or any successor rule promulgated thereafter by the Commission), including providing any legal opinions. Upon the request of any
Holder, the Company shall deliver to such Holder a written certification of a duly authorized officer as to whether it has complied with such requirements. 

  
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 ARTICLE IV 

INDEMNIFICATION AND CONTRIBUTION 

Section 4.1 Indemnification by the Company. The Company agrees to indemnify, to the extent
permitted by law, and hold harmless each Holder of Registrable Securities, its officers and directors and each person who controls such Holder (within the meaning of the Securities Act) from and against any losses, claims, damages, liabilities and
expenses (including reasonable attorneys’ fees) caused by any untrue or alleged untrue statement of material fact contained in any Registration Statement, Prospectus or preliminary Prospectus, or any amendment or supplement to any of them, or
any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as the same is contained in any information furnished in writing to the Company by the
Holder expressly for use therein. The Company also shall indemnify any Underwriter of the Registrable Securities, their officers and directors and each person who controls such Underwriter (within the meaning of the Securities Act) on substantially
the same basis as that of the indemnification of the Holder provided in this Section 4.1. 

Section 4.2 Indemnification by Holders of Registrable Securities. In connection with any Registration Statement in
which a Holder of Registrable Securities is participating, such Holder shall furnish to the Company in writing such information and affidavits as the Company reasonably requests for use in connection with any such Registration Statement or
Prospectus and, to the extent permitted by law, shall indemnify the Company, its directors and officers and agents and each person who controls the Company (within the meaning of the Securities Act) against any losses, claims, damages, liabilities
and expenses (including without limitation reasonable attorneys’ fees) resulting from any untrue statement of material fact contained in the Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof or supplement
thereto or any omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, but only to the extent that such untrue statement or omission is contained in any information or affidavit so
furnished in writing by such Holder expressly for use therein; provided, that the obligation to indemnify shall be several, not joint and several, among such Holders of Registrable Securities, and the liability of each such Holder of
Registrable Securities shall be in proportion to and limited to the net proceeds received by such Holder from the sale of Registrable Securities pursuant to such Registration Statement. Each Holder shall indemnify any Underwriter of Registrable
Securities sold by such Holder, their officers, directors and each person who controls such Underwriters (within the meaning of the Securities Act) to the same extent as provided in the foregoing with respect to indemnification of the Company. 

Section 4.3 Conduct of Indemnification Proceedings. Any person entitled to indemnification herein shall
(i) give prompt written notice to the indemnifying party of any claim with respect to which it seeks indemnification (provided that the failure to give prompt notice shall not impair any person’s right to indemnification hereunder to the
extent such failure has not materially prejudiced the indemnifying party) and (ii) unless in such indemnified party’s reasonable judgment a conflict of interest between such indemnified and indemnifying parties may exist with respect to
such claim, permit such indemnifying party to assume the defense of such claim with counsel reasonably satisfactory to the indemnified party. If such defense is assumed, the indemnifying party shall not be subject to any liability for any settlement
made by the indemnified party without its consent (but such consent shall not be unreasonably withheld). An 

  
 15 

 
indemnifying party who is not entitled to, or elects not to, assume the defense of a claim shall not be obligated to pay the fees and expenses of more than one counsel for all parties indemnified
by such indemnifying party with respect to such claim, unless in the reasonable judgment of any indemnified party a conflict of interest may exist between such indemnified party and any other of such indemnified parties with respect to such claim.
No indemnifying party shall, without the consent of the indemnified party, consent to the entry of any judgment or enter into any settlement which cannot be settled in all respects by the payment of money (and such money is so paid by the
indemnifying party pursuant to the terms of such settlement) or which settlement does not include as an unconditional term thereof the giving by the claimant or plaintiff to such indemnified party of a release from all liability in respect to such
claim or litigation. 
 Section 4.4 Survival. The indemnification provided for under this Agreement shall
remain in full force and effect regardless of any investigation made by or on behalf of the indemnified party or any officer, director or controlling person of such indemnified party and shall survive the transfer of securities. The Company and each
Holder of Registrable Securities participating in an offering also agrees to make such provisions as are reasonably requested by any indemnified party for contribution to such party in the event the Company’s or such Holder’s
indemnification is unavailable for any reason. 
 Section 4.5 Contribution. If the indemnification provided under
Sections 4.1 and 4.2 hereof from the indemnifying party is unavailable or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages, liabilities and expenses referred to herein,
then the indemnifying party, in lieu of indemnifying the indemnified party, shall contribute to the amount paid or payable by the indemnified party as a result of such losses, claims, damages, liabilities and expenses in such proportion as is
appropriate to reflect the relative fault of the indemnifying party and the indemnified party, as well as any other relevant equitable considerations. The relative fault of the indemnifying party and indemnified party shall be determined by
reference to, among other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact, was made by, or relates to information supplied by, such
indemnifying party or indemnified party, and the indemnifying party’s and indemnified party’s relative intent, knowledge, access to information and opportunity to correct or prevent such action; provided, that the liability of any
Holder under this Section 4.5 shall be limited to the amount of the net proceeds received by such Holder in such offering giving rise to such liability. The amount paid or payable by a party as a result of the losses or
other liabilities referred to above shall be deemed to include, subject to the limitations set forth in Sections 4.1, 4.2 and 4.3 above, any legal or other fees, charges or expenses reasonably incurred by such
party in connection with any investigation or proceeding. The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 4.5 were determined by pro rata allocation or by any other
method of allocation, which does not take account of the equitable considerations referred to in this Section 4.5. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities
Act) shall be entitled to contribution pursuant to this Section 4.5 from any person who was not guilty of such fraudulent misrepresentation. 

  
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 ARTICLE V 

LOCK-UP 

Section 5.1 Lock-Up. 

5.1.1 Except as permitted by Section 5.2, during the Lock-up Period, each
Significant Holder shall not Transfer any shares of Common Stock beneficially owned or owned of record by such Significant Holder. 

Section 5.2 Exceptions. The provisions of Section 5.1 shall not apply to:

 5.2.1 transactions relating to shares of Common Stock acquired in open market transactions; 

5.2.2 transactions relating to shares of Common Stock acquired pursuant to the Subscription Agreements in the Private Placements; 

5.2.3 Transfers of shares of Common Stock or any security convertible into or exercisable or exchangeable for Common Stock as a bona fide gift;

 5.2.4 Transfers of shares of Common Stock to a trust, or other entity formed for estate planning purposes for the primary benefit of the
spouse, domestic partner, parent, sibling, child or grandchild of the undersigned or any other person with whom the undersigned has a relationship by blood, marriage or adoption not more remote than first cousin; 

5.2.5 Transfers by will or intestate succession upon the death of the undersigned; 

5.2.6 the Transfer of shares of Common Stock pursuant to a qualified domestic order or in connection with a divorce settlement; 

5.2.7 if the undersigned is a corporation, partnership (whether general, limited or otherwise), limited liability company, trust or other
business entity, (i) Transfers to another corporation, partnership, limited liability company, trust or other business entity that controls, is controlled by or is under common control or management with the undersigned, or
(ii) distributions of shares of Common Stock to partners, limited liability company members or stockholders of the undersigned; 
 5.2.8
Transfers to the Company’s officers, directors or their affiliates; 
 5.2.9 pledges of shares of Common Stock as security or collateral
in connection with any borrowing or the incurrence of any indebtedness by any Holder (provided such borrowing or incurrence of indebtedness is secured by a portfolio of assets or equity interests issued by multiple issuers); 

5.2.10 Transfers pursuant to a bona fide third-party tender offer, merger, stock sale, recapitalization, consolidation or other transaction
involving a Change in Control of the Company, provided that in the event that such tender offer, merger, recapitalization, consolidation or other such transaction is not completed, the Common Stock subject to this Agreement shall remain subject to
this Agreement; 

  
 17 

 5.2.11 the establishment of a trading plan pursuant to Rule 10b5-1 promulgated under
the Exchange Act, provided that such plan does not provide for the transfer of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock during the Lock-Up Period; 

5.2.12 Transfers of shares of Common Stock to satisfy tax withholding obligations in connection with the exercise of options to purchase shares
of Common Stock or the vesting or stock-based awards; and 
 5.2.13 Transfers of shares of Common Stock in payment on a “net
exercise” or “cashless” basis of the exercise or purchase price with respect to the exercise of options to purchase shares of Common Stock; 

provided, that in the case of any Transfer or distribution pursuant to Sections 5.2.2 through 5.2.7,
each donee, distributee or other transferee shall agree in writing, in form and substance reasonably satisfactory to the Company, to be bound by the provisions of this Agreement. 

ARTICLE VI 
 GENERAL
PROVISIONS 
 Section 6.1 Entire Agreement. This Agreement (including Schedule A hereto)
constitutes the entire understanding and agreement between the parties as to the matters covered herein and supersedes and replaces any prior understanding, agreement or statement of intent, in each case, written or oral, of any and every nature
with respect thereto. 
 Section 6.2 Termination. This Agreement shall terminate upon the earliest to occur
of: (i) the termination of the Business Combination Agreement, and (ii) the date on which neither the Holders nor any of their permitted assignees hold any Registrable Securities. 

Section 6.3 Notices. Any notice or other communication required or permitted to be delivered to any party
under this Agreement shall be in writing and shall be deemed properly delivered, given and received (a) upon receipt when delivered by hand, (b) upon transmission, if sent by facsimile or electronic transmission (in each case with receipt
verified by electronic confirmation), or (c) one (1) Business Day after being sent by courier or express delivery service, specifying next day delivery, with proof of receipt. The addresses, email addresses and facsimile numbers for
such notices and communications are those set forth on the signature pages hereof, or such other address, email address or facsimile numbers as may be designated in writing hereafter, in the same manner, by any such person. 

Section 6.4 Assignment; No Third-Party Beneficiaries. This Agreement and the rights, duties and obligations
of the Company hereunder may not be assigned or delegated by the Company in whole or in part. This Agreement and the rights, duties and obligations of the Holders hereunder may be freely assigned or delegated by such Holder in conjunction with and
to the extent of any transfer of Common Stock by any such Holder. This Agreement and the provisions hereof 

  
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shall be binding upon and shall inure to the benefit of each of the parties and the permitted assigns of the applicable Holder or of any assignee of the applicable Holder. This Agreement is not
intended to confer any rights or benefits on any persons that are not party hereto other than as expressly set forth in Article IV and this Section 6.3. No assignment by any party hereto of such party’s rights,
duties and obligations hereunder shall be binding upon or obligate the Company unless and until the Company shall have received (i) written notice of such assignment and (ii) the written agreement of the assignee, in a form reasonably
satisfactory to the Company, to be bound by the terms and provisions of this Agreement (which may be accomplished by an addendum or certificate of joinder to this Agreement). 

Section 6.5 Counterparts. This Agreement may be executed in one or more counterparts, all of which shall be
considered one and the same agreement and shall become effective when one or more counterparts have been signed by each of the parties and delivered to the other parties, it being understood that all parties need not sign the same counterpart and
such counterparts may be delivered by the parties hereto via facsimile or electronic transmission. 

Section 6.6 Amendment; Waiver. This Agreement may be amended or modified, and any provision hereof may
be waived, in whole or in part, at any time pursuant to an agreement in writing executed by the Company and Holders holding a majority of the Registrable Securities at such time; provided, however, that notwithstanding the foregoing,
any amendment hereto or waiver hereof that adversely affects one Holder, solely in his, her or its capacity as a holder of the shares of capital stock of the Company, in a manner that is materially different from the other Holders (in such capacity)
shall require the consent of the Holder so affected. Any failure by any party at any time to enforce any of the provisions of this Agreement shall not be construed a waiver of such provision or any other provisions hereof. 

Section 6.7 Severability. In the event that any provision of this Agreement or the application thereof
becomes or is declared by a court of competent jurisdiction to be illegal, void or unenforceable, the remainder of this Agreement will continue in full force and effect and the application of such provision to other persons or circumstances will be
interpreted so as reasonably to effect the intent of the parties hereto. 
 Section 6.8 Governing Law;
Venue. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware applicable to contracts executed in and to be performed in that State. All Actions arising out of or relating to this Agreement shall
be heard and determined exclusively in any Delaware Chancery Court, provided, however, that if jurisdiction is not then available in the Delaware Chancery Court, then any such legal Action may be brought in any federal court located in the State of
Delaware or any other Delaware state court. The parties hereto hereby (i) irrevocably submit to the exclusive jurisdiction of the aforesaid courts for themselves and with respect to their respective properties for the purpose of any Action
arising out of or relating to this Agreement brought by any party hereto, and (ii) agree not to commence any Action relating thereto except in the courts described above in Delaware, other than Actions in any court of competent jurisdiction to
enforce any judgment, decree or award rendered by any such court in Delaware as described herein. Each of the parties further agrees that notice as provided herein shall constitute sufficient service of process and the parties further waive any
argument that such service is insufficient. Each of the parties hereby irrevocably and unconditionally waives, and agrees not to assert, by way of motion or as a defense, counterclaim 

  
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or otherwise, in any Action arising out of or relating to this Agreement or the Transactions, (a) any claim that it is not personally subject to the jurisdiction of the courts in Delaware as
described herein for any reason, (b) that it or its property is exempt or immune from jurisdiction of any such court or from any legal process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment
in aid of execution of judgment, execution of judgment or otherwise) and (c) that (i) the Action in any such court is brought in an inconvenient forum, (ii) the venue of such Action is improper or (iii) this Agreement, or the subject
matter hereof, may not be enforced in or by such courts. 
 Section 6.9 Waiver of Jury Trial. Each of the parties hereto
hereby waives to the fullest extent permitted by applicable law any right it may have to a trial by jury with respect to any litigation directly or indirectly arising out of, under or in connection with this Agreement. Each of the parties hereto
(i) certifies that no representative, agent or attorney of any other party has represented, expressly or otherwise that such other party would not, in the event of litigation, seek to enforce that foregoing waiver, and (ii) acknowledges
that it and the other parties hereto have been induced to enter into this Agreement and the transactions contemplated hereby, as applicable, by, among other things, the mutual waivers and certifications in this Section 6.9.

 Section 6.10 Specific Performance. Each party acknowledges and agrees that the other parties hereto
would be irreparably harmed and would not have any adequate remedy at law in the event that any of the provisions of this Agreement were not performed by such first party in accordance with their specific terms or were otherwise breached by such
first party. Accordingly, each party agrees that the other parties hereto shall be entitled to an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions of this Agreement, this being in
addition to any other remedy to which such parties are entitled at law or in equity. 
 [Signature Page Follows.] 

 

  
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 IN WITNESS WHEREOF, each of the parties has executed this Agreement as of the date first
written above. 
  

			
	COMPANY:
	
	BROOKLINE CAPITAL ACQUISITION CORP.
		
	By:	 	 /s/ Dr. Samuel P. Westheimer

	Name: Dr. Samuel P. Westheimer
	Title: Chief Executive Officer and Chairman

  

			
	
	Address for Notice:
	
	280 Park Avenue
	
	Suite 43W
	
	New York, NY 10017
		
	Telephone No.:	 	 (646) 603-6716

		
	Facsimile No.:	 	 ***

		
	Email Address:	 	 ***

 [Signature Page to Registration Rights and Lock-Up Agreement]

 IN WITNESS WHEREOF, each of the undersigned has executed this Agreement as of the date first
written above. 
  

			
	HOLDER:
		
	By:	 	              

	
	Address for Notice:

  

			
	
	          

	
	  

	
	  

		
	Telephone No.:	 	              

		
	Facsimile No.:	 	  

		
	Email Address:	 	  

 [Signature Page to Registration Rights and Lock-Up Agreement]

 Schedule A 

Holders 
  

					
	 Name of Holder
	 	 Number of Shares
	 	 Lock-Up
Period

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