Document:

EX-10.1

 Exhibit 10.1 

Execution Version 

ACQUIROR SUPPORT AGREEMENT 

This ACQUIROR SUPPORT AGREEMENT (this “Agreement”), dated as of March 31, 2022, is made by and among 10X Capital Venture
Acquisition Corp. II, a Cayman Islands exempted company (“10X”), Prime Blockchain Inc., a Delaware corporation (“PrimeBlock”), and 10X Capital SPAC Sponsor II LLC, a Cayman Islands limited liability company (the
“Sponsor”), and the undersigned directors and officers of 10X (collectively with the Sponsor, the “Class B Holders”). 10X, PrimeBlock and the Class B Holders shall be referred to herein from
time to time collectively as the “Parties”. Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to such terms in the Merger Agreement (as defined below). 

WHEREAS, 10X, PrimeBlock, 10X Magic First Merger Sub, Inc., a Delaware corporation (“Merger Sub 1”) and 10X Magic Second
Merger Sub, LLC, a Delaware limited liability company (“Merger Sub 2” together with Merger Sub 1, the “Merger Subs”), entered into that certain Merger Agreement, dated as of the date hereof (as it may be amended,
restated or otherwise modified from time to time in accordance with its terms, the “Merger Agreement”); 
 WHEREAS, the
Class B Holders are the record and beneficial owners of 5,332,328 issued and outstanding Class B ordinary shares of 10X (the “10X Class B Shares”); and 

WHEREAS, the Merger Agreement contemplates that the Parties will enter into this Agreement concurrently with the execution and delivery of the
Merger Agreement by the parties thereto, pursuant to which, among other things, each Class B Holder will vote in favor of approval of the Proposals. 

NOW, THEREFORE, in consideration of the premises and the mutual promises contained herein and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the Parties, each intending to be legally bound, hereby agree as follows: 
 1.
Agreement to Vote. Each Class B Holder hereby irrevocably and unconditionally agrees (a) to vote at any meeting of the shareholders of 10X, and in any action by written resolution of the shareholders of 10X, all of such Class B
Holder’s 10X Class B Shares (together with any other equity securities of 10X that such Class B Holder holds of record or beneficially, as of the date of this Agreement, or acquires record or beneficial ownership after the date
hereof, collectively, the “Subject 10X Equity Securities”) (i) in favor of the Proposals and (ii) against, and withhold consent with respect to, any other matter, action or proposal that would reasonably be expected to result
in (x) a breach of any of the 10X’s or any Merger Sub’s covenants, agreements or obligations under the Merger Agreement or (y) any of the conditions to the Closing set forth in Sections 9.01, 9.02 or 9.03 of the Merger Agreement
not being satisfied, (b) if a meeting is held in respect of the matters set forth in clause (a), to appear at the meeting, in person or by proxy, or otherwise cause all of such Class B Holder’s Subject 10X Equity Securities to be
counted as present thereat for purposes of establishing a quorum and (c) not to redeem, elect to redeem or tender or submit any of its Subject 10X Equity Securities for redemption in connection with such shareholder approval, the Merger or any
other transactions contemplated by the Merger Agreement. Prior to any valid termination of the Merger Agreement, each Class B Holder shall take, or cause to be taken, all actions and to do, or cause to be done, all things reasonably necessary
under applicable Laws to consummate the Merger and the other transactions contemplated by the Merger Agreement and on the terms and subject to the conditions set forth therein. 

 2. Lock-Up. 

a. For purposes of this Agreement: 

(i) the term “First Lock-Up Period” means the period beginning on the Closing Date
and ending on the date that is six (6) months after the Closing Date; 
 (ii) the term
“Lock-up Period” means the period beginning on the Closing Date and ending on the date that is one (1) year after the Closing Date; provided, that the Parties may mutually agree to
shorten the duration of or otherwise waive the Lock-up Period; 
 (iii) the term “Lock-up Shares” means (a) prior to the Redomicile, the Class A ordinary shares, par value $0.0001 per share, of the share capital of 10X, and (b) from and after the Redomicile, the Acquiror
Common Stock (the “Acquiror Common Stock”) held by the Sponsor immediately following the Closing (for the avoidance of doubt, (x) including the 10X Class B Shares, and (y) excluding the (i) private placement
units issued to the Sponsor in connection with its initial public offering, and (ii) Acquiror Common Stock acquired in the public market, together with any securities paid as dividends or distributions with respect to such securities or into
which such securities are exchanged or converted); 
 (iv) the term “Permitted Transferees” means any Person to whom the
Sponsor is permitted to transfer Lock-up Shares prior to the expiration of the Lock-up Period pursuant to Section 2(a); 

(v) the term “Prospectus” means the final prospectus of 10X, filed with the United States Securities and Exchange Commission
(File No. 333-253867) on August 10, 2021; 
 (vi) the term “Second Lock-Up Period” means the period beginning on the date that is six (6) months after the Closing Date and ending on the date that is twelve (12) months after the Closing Date; and 

(vii) the term “Transfer” means the (A) sale of, offer to sell, contract or agreement to sell, hypothecate, pledge,
grant of any option to purchase or otherwise dispose of or agreement to dispose of or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning of
Section 16 of the Exchange Act, and the rules and regulations promulgated thereunder, with respect to, any security, (B) entry into any swap or other arrangement that transfers to another, in whole or in part, any of the economic
consequences of ownership of any security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (C) public announcement of any intention to effect any transaction specified in clause (A) or
(B). 
 b. The Sponsor hereby agrees that it shall not, and shall cause any of its Permitted Transferees not to, Transfer any Lock-Up Shares during the Lock-Up Period (the “Transfer Restriction”), except in accordance with the following: 

(i) with respect to 1,777,443 Lock-Up Shares (the “First Tranche”) no Transfer
Restrictions shall apply to the First Tranche after the expiration of the First Lock-Up Period; 

(ii) during the Second Lock-Up Period, the Transfer Restriction shall expire with respect to an
additional 3,554,885 Lock-Up Shares (the “Second Tranche”), upon the date on which the last reported sale price of the Acquiror Common Stock exceeds $12.00 per share for any twenty
(20) trading days within any consecutive thirty (30) trading day period that commences at least six (6) months after the Closing Date (for the avoidance of doubt no Transfer Restriction shall apply to the First Tranche or Second
Tranche after the expiration of the Second Lock-Up Period); and 

  
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 (iii) on the date on which post-merger 10X completes a liquidation, merger, capital stock
exchange, reorganization or other similar transaction that results in all of post-merger 10X’s stockholders having the right to exchange their shares for cash, securities or other property, the Transfer Restriction will terminate with respect
to all Lock-Up Shares. 
 c. Notwithstanding the provisions set forth in
Section 2(b), the Sponsor or its Permitted Transferees may Transfer the Lock-up Shares during the Lock-up Period to (i) to 10X’s
officers or directors, (ii) to any Affiliates of the Sponsor; (iii) in respect of (i) or (ii), in the case of an individual, by gift to a member of such individual’s immediate family or to a trust, the beneficiary of which is a
member of such individual’s immediate family, an Affiliate of such individual or to a charitable organization; (iv) in respect of (i), (ii) or (iii), in the case of an individual, by virtue of laws of descent and distribution upon death of
such individual; (v) by virtue of the laws of the Cayman Islands or the Sponsor limited liability company agreement upon dissolution of the Sponsor, in each case, subject to any such transferee signing a joinder hereto agreeing to be bound by
all provisions hereof to the same extent as the Sponsor. 
 d. The per share stock prices referenced in this Agreement will be equitably
adjusted on account of any changes in the equity securities of 10X by way of stock split, stock dividend, combination or reclassification, or through merger, consolidation, reorganization, recapitalization or business combination, or by any other
means. 
 e. If any Transfer is made or attempted contrary to the provisions of this Agreement, such Transfer shall be null and void ab
initio, and 10X shall refuse to recognize any such transferee of the Lock-Up Shares as one of its equity holders for any purpose. In order to enforce this Section 2, 10X may impose stop-transfer
instructions with respect to the Lock-Up Shares (and any Permitted Transferees and assigns thereof) until the end of the First Lock-Up Period, the Second Lock-Up Period and the Lock-Up Period, as applicable. 
 f. During
the applicable Lock-Up Period, each certificate (if any are issued) evidencing any Lock-Up Shares shall be stamped or otherwise imprinted with a legend in substantially
the following form, in addition to any other applicable legends: 
 “THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO
RESTRICTIONS ON TRANSFER SET FORTH IN A LOCK-UP AGREEMENT, DATED AS OF MARCH 31, 2022, BY AND AMONG THE ISSUER OF SUCH SECURITIES (THE “ISSUER”) AND THE ISSUER’S SECURITY HOLDER
NAMED THEREIN, AS AMENDED. A COPY OF SUCH LOCK-UP AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST.” 

g. For the avoidance of any doubt, the Sponsor shall retain all of its rights as a shareholder of 10X with respect to the Lock-Up Shares during the Lock-Up Period, including the right to vote any Lock-Up Shares. 

3. Other Covenants. 
 a.
Each Class B Holder hereby agrees to be bound by and subject to (i) Section 8.04 (Confidentiality; Publicity) of the Merger Agreement to the same extent as such provisions apply to the parties to the Merger Agreement, as if such
Class B Holder is directly a party thereto, and (ii) Section 7.12 (Exclusivity) and Section 8.01(c) (Support of Transaction) of the Merger Agreement to the same extent as such provisions apply to 10X, as if such Class B
Holder is directly party thereto. 

  
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 b. Each Class B Holder acknowledges and agrees that PrimeBlock is entering into the
Merger Agreement in reliance upon such Class B Holder entering into this Agreement and agreeing to be bound by, and perform, or otherwise comply with, as applicable, the agreements, covenants and obligations contained in this Agreement and but
for such Class B Holder entering into this Agreement and agreeing to be bound by, and perform, or otherwise comply with, as applicable, the agreements, covenants and obligations contained in this Agreement PrimeBlock would not have entered
into, or agreed to consummate the transactions contemplated by, the Merger Agreement. 
 4. Termination of 10X Class B
Shares IPO Lock-up Period. Each Class B Holder and 10X hereby agree that effective as of the consummation of the Closing (and not before), Sections 3 and 7 of that certain Letter Agreement, dated
August 10, 2021, by and among 10X, the Class B Holders and certain other parties thereto (the “Class B Holder Agreement”), shall be amended and restated in its entirety as follows: 

“3. Reserved.” 

“7. Reserved.” 
 Notwithstanding
anything to the contrary in the Class B Holder Agreement, the restrictions set forth in Sections 3 and 7 thereof shall be effective until the Closing. 

The amendment and restatement set forth in this Section 4 shall be void and of no force and effect with respect to the Class B
Holder Agreement if the Merger Agreement shall be terminated for any reason in accordance with its terms. 
 5. Representations and
Warranties. 
 a. Sponsor represents and warrants to PrimeBlock as follows: (i) it is duly organized, validly existing and in good
standing under the laws of the Cayman Islands, and the execution, delivery and performance of this Agreement and the consummation of the transactions contemplated hereby are within Sponsor’s, corporate, limited liability company or
organizational powers and have been duly authorized by all necessary actions on the part of Sponsor; (ii) the execution and delivery of this Agreement by Sponsor does not, and the performance by Sponsor of its obligations hereunder will not,
(A) conflict with or result in a violation of the organizational documents of Sponsor, or (B) require any consent or approval that has not been given or other action that has not been taken by any third party (including under any Contract
binding upon Sponsor or Sponsor’s Subject 10X Equity Securities), in each case, to the extent such consent, approval or other action would prevent, enjoin or materially delay the performance by Sponsor of its obligations under this Agreement;
(iii) there are no Actions pending against Sponsor or, to the knowledge of Sponsor, threatened against Sponsor, before (or, in the case of threatened Actions, that would be before) any arbitrator or any Governmental Authority, which in any
manner challenges or seeks to prevent, enjoin or materially delay the performance by Sponsor of its obligations under this Agreement. 
 b.
Each Class B Holder represents and warrants to PrimeBlock as follows: (i) this Agreement has been duly executed and delivered by such Class B Holder and, assuming due authorization, execution and delivery by the other parties to this
Agreement, this Agreement constitutes a legally valid and binding obligation of such Class B Holder, enforceable against such Class B Holder in accordance with the terms hereof (except as enforceability may be limited by bankruptcy Laws,
other similar Laws affecting creditors’ rights and general principles of equity affecting the availability of specific performance and other equitable remedies) and (ii) such Class B Holder has not entered into, and shall not enter
into, any agreement that would restrict, limit or interfere with the performance of such Class B Holder’s obligations hereunder. 

  
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 6. Termination. This Agreement shall automatically terminate, without any notice or
other action by any Party, and be void ab initio upon the earlier of (a) the Effective Time and (b) the termination of the Merger Agreement in accordance with its terms. Upon termination of this Agreement as provided in the
immediately preceding sentence, none of the Parties shall have any further obligations or liabilities under, or with respect to, this Agreement. Notwithstanding the foregoing or anything to the contrary in this Agreement, (i) the termination of
this Agreement pursuant to Section 6(b) shall not affect any liability on the part of any Party for a Willful Breach of any covenant or agreement set forth in this Agreement prior to such termination or Fraud,
(ii) Sections 2, 4, 10 (solely to the extent related to Sections 2, 4 or 11) and 11 shall each survive the termination of this Agreement pursuant to Section 6(a), and
(iii) Sections 7, 8, 9 and 10 (solely to the extent related to the following Sections 7 or 9) shall survive any termination of this Agreement. For purposes of this Section 6,
(x) “Willful Breach” means a material breach that is a consequence of an act undertaken or a failure to act by the breaching Party with the knowledge that the taking of such act or such failure to act would, or would reasonably be
expected to, constitute or result in a breach of this Agreement and (y) “Fraud” means an act or omission by a Party, and requires: (i) a false or incorrect representation or warranty expressly set forth in this Agreement,
(ii) with actual knowledge (as opposed to constructive, imputed or implied knowledge) by the Party making such representation or warranty that such representation or warranty expressly set forth in this Agreement is false or incorrect,
(iii) an intention to deceive another Party, to induce him, her or it to enter into this Agreement, (iv) another Party, in justifiable or reasonable reliance upon such false or incorrect representation or warranty expressly set forth in
this Agreement, causing such Party to enter into this Agreement, and (v) causing such Party to suffer damage by reason of such reliance. 

7. No Recourse. Except for claims pursuant to the Merger Agreement or any other Ancillary Agreement by any party(ies) thereto against
any other party(ies) thereto, each Party agrees that (a) this Agreement may only be enforced against, and any action for breach of this Agreement may only be made against, the Parties, and no claims of any nature whatsoever (whether in tort,
contract or otherwise) arising under or relating to this Agreement, the negotiation hereof or its subject matter, or the transactions contemplated hereby shall be asserted against any Affiliate of PrimeBlock or any Affiliate of 10X (other than the
Class B Holders, on the terms and subject to the conditions set forth herein), and (b) none of the Affiliates of PrimeBlock or the Affiliates of 10X (other than the Class B Holders, on the terms and subject to the conditions set forth
herein) shall have any liability arising out of or relating to this Agreement, the negotiation hereof or its subject matter, or the transactions contemplated hereby, including with respect to any claim (whether in tort, contract or otherwise) for
breach of this Agreement or in respect of any written or oral representations made or alleged to be made in connection herewith, as expressly provided herein, or for any actual or alleged inaccuracies, misstatements or omissions with respect to any
information or materials of any kind furnished in connection with this Agreement, the negotiation hereof or the transactions contemplated hereby. 

8. Fiduciary Duties. Notwithstanding anything in this Agreement to the contrary, (a) each Class B Holder makes no agreement
or understanding herein in any capacity other than in its capacity as a record holder and beneficial owner of the Subject 10X Equity Securities and (b) nothing herein will be construed to limit or affect any action or inaction by any
representative of the Sponsor in its capacity as a member of the board of directors (or other similar governing body) of 10X or any of its Affiliates or as an officer, employee or fiduciary of 10X or any of its Affiliates, in each case, acting in
such person’s capacity as a director, officer, employee or fiduciary of 10X or such Affiliate. 
 9. No Third Party
Beneficiaries. This Agreement shall be for the sole benefit of the Parties and their respective successors and permitted assigns and is not intended, nor shall be construed, to give any Person, other than the Parties and their respective
successors and assigns, any legal or equitable right, benefit or remedy of any nature whatsoever by reason this Agreement. Nothing in this Agreement, expressed or implied, is intended to or shall constitute the Parties, partners or participants in a
joint venture. 

  
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 10. Incorporation by Reference. Sections 1.02 (Construction) 11.03 (Assignment),
11.06 (Governing Law), 11.07 (Captions; Counterparts), 11.09 (Entire Agreement), 11.10 (Amendments), 11.11 (Severability), 11.12 (Jurisdiction; Waiver of Jury Trial), 11.13 (Enforcement) and 11.15
(Non-Survival of Representations, Warranties and Covenants) of the Merger Agreement are incorporated herein by reference and shall apply to this Agreement mutatis mutandis. 

11. Waiver of Anti-dilution Protection. The Sponsor and each Class B Holder hereby irrevocably (a) waives, subject to, and
conditioned upon, the occurrence of the Closing, to the fullest extent permitted by law, and (b) agrees not to assert or perfect, any rights to adjustment or other anti-dilution protections in connection with the transactions contemplated by
the Merger Agreement. 
 [signature page follows] 

  
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 IN WITNESS WHEREOF, each of the Parties has caused this Agreement to be duly executed
on its behalf as of the day and year first above written. 
  

			
	 10X CAPITAL SPAC SPONSOR II LLC

		
	By:	 	 /s/ Hans Thomas

		 	Name: Hans Thomas
		 	Title: Sole Managing Member
	
	10X CAPITAL VENTURE ACQUISITION CORP. II
		
	By:	 	 /s/ Hans Thomas

		 	Name: Hans Thomas
		 	Title: Chairman and Chief Executive Officer

 [Signature Page to Acquiror Support Agreement] 

 
			
	PRIME BLOCKCHAIN INC.
		
	By:	 	 /s/ Gaurav Budhrani

		 	Name: Gaurav Budhrani
		 	Title: Chief Executive Officer

 [Signature Page to Acquiror Support Agreement] 

 
			
	 OTHER CLASS B HOLDERS:

		
		 	 /s/ Hans Thomas

		 	Hans Thomas
		
		 	 /s/ David Weisburd

		 	David Weisburd
		
		 	 /s/ Boris Silver

		 	Boris Silver
		
		 	 /s/ Woodrow H. Levin

		 	Woodrow H. Levin
		
		 	 /s/ Christopher Jurasek

	        	 	Christopher Jurasek

 [Signature Page to Acquiror Support Agreement]EX-10.2

 Exhibit 10.2 

FORM OF COMPANY SUPPORT AGREEMENT 

This COMPANY SUPPORT AGREEMENT (this “Agreement”) is entered into as of March 31, 2022, by and among 10X Capital
Venture Acquisition Corp. II, a Cayman Islands exempted company (“10X”), [ ⚫ ], a [ ⚫ ] (the “Stockholder”), and,
solely with respect to Section 1(a) hereto, Prime Blockchain Inc., a Delaware corporation (“PrimeBlock”). Each of 10X, the Stockholders and PrimeBlock are sometimes referred to herein individually as a
“Party” and collectively as the “Parties”. Capitalized terms used but not otherwise defined herein shall have the meanings ascribed to them in the Merger Agreement (defined below). 

RECITALS 
 WHEREAS,
on March 31, 2022, 10X, PrimeBlock, 10X Magic First Merger Sub, Inc., a Delaware corporation (“Merger Sub 1”) and 10X Magic Second Merger Sub, LLC, a Delaware limited liability company (“Merger Sub 2”) entered
into that certain Merger Agreement (as amended, supplemented or otherwise modified from time to time in accordance with its terms, the “Merger Agreement”) pursuant to which, among other things, Merger Sub 2 will merge with and into
PrimeBlock, with Merger Sub 2 as the surviving company in the merger and, after giving effect to such merger, becoming a wholly-owned Subsidiary of 10X, and each share of Company Common Stock will be converted into the right to receive Acquiror
Common Stock, in each case, on the terms and subject to the conditions set forth in the Merger Agreement; 
 WHEREAS, the Stockholder
is the record and beneficial owner of the number and type of equity securities of PrimeBlock set forth on Schedule A hereto (together with any other equity securities of PrimeBlock that the Stockholder acquires record or beneficial ownership
after the date hereof, collectively, the “Subject Company Stock”); 
 WHEREAS, in consideration for the benefits to
be received by the Stockholder under the terms of the Merger Agreement and as a material inducement to 10X agreeing to enter into, and consummate the transactions contemplated by, the Merger Agreement, the Stockholder agrees to enter into this
Agreement and to be bound by the agreements, covenants and obligations contained in this Agreement; and 
 WHEREAS, the Parties
acknowledge and agree that 10X and Merger Sub would not have entered into, and agreed to consummate the transactions contemplated by, the Merger Agreement without the Stockholder entering into this Agreement and agreeing to be bound by the
agreements, covenants and obligations contained in this Agreement. 
 NOW, THEREFORE, in consideration of the premises and the mutual
promises set forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties, each intending to be legally bound, hereby agree as follows: 

AGREEMENT 
 1. Company
Stockholder Consent and Related Matters. 
 (a) Subject to the earlier termination of this Agreement in accordance with
its terms, (i) as promptly as reasonably practicable (and in any event within five (5) Business Days) following the time at which the Registration Statement becomes effective under the Securities Act, the Stockholder shall duly execute and
deliver to PrimeBlock and 10X the Company Stockholder Approvals under which it shall irrevocably and unconditionally consent to the matters, actions and proposals contemplated by Section 8.02(f) of the Merger Agreement (the
“Approval”), including the Merger and any other transactions contemplated by the Merger Agreement to occur at or immediately prior to the Closing (collectively, the “Transactions”) and (ii) without limiting the

 
generality of the foregoing, prior to the Closing, the Stockholder shall vote (or cause to be voted) the Subject Company Stock against and withhold consent with respect to (x) any
Acquisition Proposal or (y) any other matter, action or proposal that would reasonably be expected to result in (A) a breach of any of PrimeBlock’s covenants, agreements or obligations under the Merger Agreement or (B) any of the
conditions to the Closing set forth in Sections 9.01, 9.02 or 9.03 of the Merger Agreement not being satisfied; provided, that in the case or either (i) or (ii), the Merger Agreement shall not have been amended or modified without such
Stockholder’s consent (1) to decrease the consideration payable under the Merger Agreement, or (2) to change the form of merger consideration in a manner adverse to such Stockholder. 

2. Other Covenants and Agreements. 

(a) The Stockholder hereby agrees that, notwithstanding anything to the contrary in any such agreement, (i) each of the
agreements set forth on Schedule B hereto shall be automatically terminated and of no further force and effect (including any provisions of any such agreement that, by its terms, survive such termination) effective as of, and subject to and
conditioned upon the occurrence of, the Closing and (ii) upon such termination neither PrimeBlock nor any of its Affiliates (including from and after the Effective Time, 10X and its Affiliates) shall have any further obligations or liabilities
under each such agreement. Without limiting the generality of the foregoing, the Stockholder hereby agrees to promptly execute and deliver all additional agreements, documents and instruments and take, or cause to be taken, all actions necessary or
reasonably advisable in order to achieve the purpose of the preceding sentence. 
 (b) The Stockholder shall be bound by and
subject to (i) Section 8.04 (Confidentiality; Publicity) of the Merger Agreement to the same extent as such provisions apply to the parties to the Merger Agreement, and (ii) Section 6.04 (No Claim Against the Trust
Account), Section 6.06 (Non-Solicitation; Acquisition Proposals) and Section 8.01(c) (Support of Transaction) of the Merger Agreement to the same extent as such provisions apply to PrimeBlock, in
each case, mutatis mutandis, as if the Stockholder is directly party thereto. Notwithstanding anything in this Agreement to the contrary, (x) the Stockholder shall not be responsible for the actions of PrimeBlock or the PrimeBlock Board
(or any committee thereof) or any officers, directors (in their capacity as such), employees and professional advisors of any of the foregoing (the “Company Related Parties”), including with respect to any of the matters
contemplated by this Section 2(b), (y) the Stockholder is not making any representations or warranties with respect to the actions of any of the PrimeBlock Related Parties, and (z) any breach by PrimeBlock of its
obligations under the Merger Agreement shall not be considered a breach of this Section 2(b) (it being understood for the avoidance of doubt that the Stockholder shall remain responsible for any breach by it of this
Section 2(b)). 
 (c) The Stockholder acknowledges and agrees that 10X and Merger Sub are entering
into the Merger Agreement in reliance upon the Stockholder entering into this Agreement and agreeing to be bound by, and perform, or otherwise comply with, as applicable, the agreements, covenants and obligations contained in this Agreement and but
for the Stockholder entering into this Agreement and agreeing to be bound by, and perform, or otherwise comply with, as applicable, the agreements, covenants and obligations contained in this Agreement 10X and Merger Sub would not have entered into,
or agreed to consummate the transactions contemplated by, the Merger Agreement. 

  
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 3. Stockholder Representations and Warranties. The Stockholder represents and
warrants to 10X as follows: 
 (a) The Stockholder is a corporation, limited liability company or other applicable business
entity duly organized or formed, as applicable, validly existing and in good standing (or the equivalent thereof, if applicable, in each case, with respect to the jurisdictions that recognize the concept of good standing or any equivalent thereof)
under the Laws of its jurisdiction of formation or organization (as applicable) . 
 (b) The Stockholder has the requisite
corporate, limited liability company or other similar power and authority to execute and deliver this Agreement, to perform its covenants, agreements and obligations hereunder (including, for the avoidance of doubt, those covenants, agreements and
obligations hereunder that relate to the provisions of the Merger Agreement), and to consummate the transactions contemplated hereby. The execution and delivery of this Agreement has been duly authorized by all necessary corporate (or other similar)
action on the part of the Stockholder. This Agreement has been duly and validly executed and delivered by the Stockholder and constitutes a valid, legal and binding agreement of the Stockholder (assuming that this Agreement is duly authorized,
executed and delivered by 10X), enforceable against the Stockholder in accordance with its terms (subject to applicable bankruptcy, insolvency, reorganization, moratorium or other Laws affecting generally the enforcement of creditors’ rights
and subject to general principles of equity). 
 (c) No consent, approval or authorization of, or designation, declaration or
filing with, any Governmental Entity is required on the part of the Stockholder with respect to the Stockholder’s execution, delivery or performance of its covenants, agreements or obligations under this Agreement (including, for the avoidance
of doubt, those covenants, agreements and obligations under this Agreement that relate to the provisions of the Merger Agreement) or the consummation of the transactions contemplated hereby, except for any consents, approvals, authorizations,
designations, declarations, waivers or filings, the absence of which would not adversely affect the ability of the Stockholder to perform, or otherwise comply with, any of its covenants, agreements or obligations hereunder in any material respect,
or which have already been obtained in advance of the Stockholder’s entry into this Agreement. 
 (d) None of the
execution or delivery of this Agreement by the Stockholder, the performance by the Stockholder of any of its covenants, agreements or obligations under this Agreement (including, for the avoidance of doubt, those covenants, agreements and
obligations under this Agreement that relate to the provisions of the Merger Agreement) or the consummation of the transactions contemplated hereby will, directly or indirectly (with or without due notice or lapse of time or both) (i) result in
any breach of any provision of the Stockholder’s organizational and governing documents, (ii) result in a violation or breach of, or constitute a default or give rise to any right of termination, consent, cancellation, amendment,
modification, suspension, revocation or acceleration under, any of the terms, conditions or provisions of any Contract to which the Stockholder is a party, (iii) violate, or constitute a breach under, any Governmental Order or applicable Law to
which the Stockholder or any of its properties or assets are bound or (iv) other than the restrictions contemplated by this Agreement, result in the creation of any Lien upon the Subject Company Stock, except, in the case of any of
clauses (ii) and (iii) above, as would not adversely affect the ability of the Stockholder to perform, or otherwise comply with, any of its covenants, agreements or obligations hereunder in any material respect.

 (e) The Stockholder is the record and beneficial owner of the Subject Company Stock and has valid, good and marketable
title to the Subject Company Stock, free and clear of all Liens (other than transfer restrictions under applicable Securities Law or under the PrimeBlock Organizational Documents). Except for the equity securities of PrimeBlock set forth on
Schedule A hereto, together with any other equity securities of PrimeBlock that the Stockholder acquires record or beneficial ownership of after the date hereof that is either permitted pursuant to,

  
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or acquired in accordance with, Section 6.01 of the Merger Agreement, the Stockholder does not own, beneficially or of record, any equity securities of PrimeBlock. The Stockholder does not
own any right to acquire any equity securities of PrimeBlock (except in its capacity as a stockholder). The Stockholder has the right to vote (and provide consent in respect of, as applicable) the Subject Company Stock and, except for this Agreement
and the Merger Agreement, the Stockholder is not party to or bound by (i) any option, warrant, purchase right, or other Contract that would (either alone or in connection with one or more events, developments or events (including the
satisfaction or waiver of any conditions precedent)) require the Stockholder to Transfer any of the Subject Company Stock or (ii) any voting trust, proxy or other Contract with respect to the voting or Transfer of any of the Subject Company
Stock, in each case, that could reasonably be expected to (x) impair the ability of such Stockholder to perform its obligations under this Agreement or (y) prevent, impede or delay the consummation of any of the transactions contemplated
by this Agreement. 
 (f) There is no Proceeding pending or, to the Stockholder’s knowledge, threatened against the
Stockholder that, if adversely decided or resolved, would reasonably be expected to adversely affect the ability of the Stockholder to perform, or otherwise comply with, any of its covenants, agreements or obligations under this Agreement in any
material respect. 
 (g) The Stockholder, on its own behalf and on behalf of its Representatives, acknowledges, represents,
warrants and agrees that (i) it has conducted its own independent review and analysis of, and, based thereon, has formed an independent judgment concerning, the business, assets, condition, operations and prospects of, 10X and (ii) it has
been furnished with or given access to such documents and information about 10X and its respective businesses and operations as it and its Representatives have deemed necessary to enable it to make an informed decision with respect to the execution,
delivery and performance of this Agreement, the other Ancillary Agreements to which it is or will be a party and the transactions contemplated hereby and thereby. 

(h) In entering into this Agreement and the other Ancillary Agreements to which it is or will be a party, the Stockholder has
relied solely on its own investigation and analysis and the representations and warranties expressly set forth in the Ancillary Agreements to which it is or will be a party and no other representations or warranties of 10X or Merger Sub (including,
for the avoidance of doubt, none of the representations or warranties of 10X set forth in the Merger Agreement or any other Ancillary Agreement), any of their respective Affiliates or any other Person, either express or implied, and the Stockholder,
on its own behalf and on behalf of its Representatives, acknowledges, represents, warrants and agrees that, except for the representations and warranties expressly set forth in the Ancillary Agreements to which it is or will be a party, none of 10X,
Merger Sub, any of their respective Affiliates or any other Person makes or has made any representation or warranty, either express or implied, in connection with or related to this Agreement, the Ancillary Agreements to which it is or will be a
party or the transactions contemplated hereby or thereby. 
 4. Transfer of Subject Securities. Except as expressly contemplated by
the Merger Agreement or with the prior written consent of 10X (such consent to be given or withheld in its sole discretion), from and after the date hereof, the Stockholder agrees not to (a) Transfer any of the Subject Company Stock,
(b) enter into (i) any option, warrant, purchase right, or other Contract that would (either alone or in connection with one or more events or developments (including the satisfaction or waiver of any conditions precedent))
require the Stockholder to Transfer the Subject Company Stock or (ii) any voting trust, proxy or other Contract with respect to the voting or Transfer of the Subject Company Stock, or (c) take any actions in furtherance of
any of the matters described in the foregoing clauses (a) or (b). For purposes of this Agreement, “Transfer” means any, direct or indirect, sale, transfer, assignment, pledge, mortgage, exchange,
hypothecation, grant of a security interest in or disposition or encumbrance of an interest 

  
 4 

 
(whether with or without consideration, whether voluntarily or involuntarily or by operation of law or otherwise). Notwithstanding the foregoing, the Stockholder may transfer its Subject Company
Stock to (x) its Affiliates, or (y) in the case of an individual, by gift to a member of such individual’s immediate family or to a trust, the beneficiary of which is a member of such individual’s immediate family, an affiliate
of such individual or to a charitable organization or pursuant to a qualified domestic relations order with prior written notice to (but without the consent of) 10X, or by virtue of laws of descent and distribution upon death of such individual,
subject to any such transferee signing a joinder hereto agreeing to be bound by all provisions hereof to the same extent as the Stockholder. 

5. Termination. This Agreement shall automatically terminate, without any notice or other action by any Party, and be void ab
initio upon the earliest of (a) the Effective Time, (b) the termination of the Merger Agreement in accordance with its terms, (c) the amendment or modification of the Merger Agreement without the Stockholder’s consent
(1) to decrease the consideration payable under the Merger Agreement, or (2) to change the form of merger consideration in a manner adverse to such Stockholder and (d) the effective date of a written agreement of the parties hereto
terminating this Agreement. Upon termination of this Agreement as provided in the immediately preceding sentence, none of the Parties shall have any further obligations or liabilities under, or with respect to, this Agreement. Notwithstanding the
foregoing or anything to the contrary in this Agreement, (i) the termination of this Agreement pursuant to Section 5(b) shall not affect any liability on the part of any Party for a Willful Breach of any covenant or
agreement set forth in this Agreement prior to such termination or Fraud, (ii) Section 2(b)(i) (solely to the extent that it relates to Section 8.04 (Confidentiality; Publicity) of the Merger Agreement) and the representations
and warranties set forth in Sections 3(g) and (h) shall each survive any termination of this Agreement and (iii) Section 2(b)(ii) (solely to the extent that it relates to Section 6.04 (No Claim
Against the Trust Account) of the Merger Agreement) shall survive the termination of this Agreement pursuant to Section 5(b). For purposes of this Section 5, (x) “Willful Breach”
means a material breach that is a consequence of an act undertaken or a failure to act by the breaching Party with the knowledge that the taking of such act or such failure to act would, or would reasonably be expected to, constitute or result in a
breach of this Agreement and (y) “Fraud” means an act or omission by a Party, and requires: (A) a false or incorrect representation or warranty expressly set forth in this Agreement, (B) with actual knowledge (as opposed
to constructive, imputed or implied knowledge) by the Party making such representation or warranty that such representation or warranty expressly set forth in this Agreement is false or incorrect, (C) an intention to deceive another Party, to
induce it to enter into this Agreement, (D) another Party, in justifiable or reasonable reliance upon such false or incorrect representation or warranty expressly set forth in this Agreement, causing such Party to enter into this Agreement, and
(E) causing such Party to suffer damage by reason of such reliance. 
 6. Fiduciary Duties. Notwithstanding anything in this
Agreement to the contrary, (a) the Stockholder makes no agreement or understanding herein in any capacity other than in such Stockholder’s capacity as a record holder and beneficial owner of the Subject Company Stock, and not in such
Stockholder’s capacity as a director, officer or employee of PrimeBlock or any of PrimeBlock’s Subsidiaries and (b) nothing herein will be construed to limit or affect any action or inaction by such Stockholder // any representative
of such Stockholder serving in its capacity as a member of the board of directors of PrimeBlock or as an officer, employee or fiduciary of PrimeBlock, in each case, acting in such person’s capacity as a director, officer, employee or fiduciary
of PrimeBlock. 
 7. No Recourse. Except for claims pursuant to the Merger Agreement or any other Ancillary Agreement by any
party(ies) thereto against any other party(ies) thereto, each Party agrees that (a) this Agreement may only be enforced against, and any action for breach of this Agreement may only be made against, the Parties, and no claims of any nature
whatsoever (whether in tort, contract or otherwise) arising under or relating to this Agreement, the negotiation hereof or its subject matter, or the transactions 

  
 5 

 
contemplated hereby shall be asserted against PrimeBlock, 10X or any Affiliate of 10X, and (b) none of PrimeBlock, 10X or any Affiliate of 10X shall have any liability arising out of or
relating to this Agreement, the negotiation hereof or its subject matter, or the transactions contemplated hereby, including with respect to any claim (whether in tort, contract or otherwise) for breach of this Agreement or in respect of any written
or oral representations made or alleged to be made in connection herewith, as expressly provided herein, or for any actual or alleged inaccuracies, misstatements or omissions with respect to any information or materials of any kind furnished in
connection with this Agreement, the negotiation hereof or the transactions contemplated hereby. 
 8. Notices. All notices and other
communications among the Parties shall be in writing and shall be deemed to have been duly given (a) when delivered in person, (b) when delivered after posting in the United States mail having been sent registered or certified mail return
receipt requested, postage prepaid, (c) when delivered by FedEx or other nationally recognized overnight delivery service or (d) when e-mailed during normal business hours (and otherwise as of the
immediately following Business Day), addressed as follows: 
  

	 	(a)	 If to Acquiror (including in its capacity as Designee) or Merger Sub, to: 

10X Capital Venture Acquisition Corp. II 

1 World Trade Center, 85th Floor 

New York, NY 10007 
 Attn: Hans
Thomas 
 E-mail: [ ⚫ ] 

with a copy to: 

Latham & Watkins LLP 

99 Bishopsgate 
 London EC2M 3XF

 United Kingdom 

Attn:        J. David Stewart 

                Ryan Maierson 

E-mail:    [ ⚫ ] 

                [ 
⚫ ] 
  

	 	(b)	 If to Stockholder, to: 

[•] 
 [•] 

Attn:       [•] 

E-mail:   [•] 

 

	 	(c)	 If to PrimeBlock, to: 

Prime Blockchain Inc. 
 589
Howard Street, Suite 100 
 San Francisco, CA 94105 

Attn: Chief Executive Officer 
 E-mail: [ ⚫ ] 

  
 6 

 with a copy to: 

Reed Smith LLP 
 1901 Avenue of
the Stars, Suite 700 
 Attn: Ramsey Hanna 

E-mail: [ ⚫ ] 

and 
 White & Case LLP

 1221 Avenue of the Americas 

New York, NY 10020 

Attn:     Joel Rubinstein 

     Bryan Luchs 

E-mail: [ ⚫ ] 

[ ⚫ ] or to such other address or addresses as the Parties may from time to time designate
in writing. 
 9. No Third Party Beneficiaries. This Agreement shall be for the sole benefit of the Parties and their respective
successors and permitted assigns and is not intended, nor shall be construed, to give any Person, other than the Parties and their respective successors and permitted assigns, any legal or equitable right, benefit or remedy of any nature whatsoever
by reason this Agreement. Nothing in this Agreement, expressed or implied, is intended to or shall constitute the Parties acting as partners or participants in a joint venture. 

10. Miscellaneous. Sections 1.02 (Construction), 11.03 (Assignment), 11.06 (Governing Law), 11.07 (Captions; Counterparts), 11.09
(Entire Agreement), 11.10 (Amendments), 11.11 (Severability), 11.12 (Jurisdiction; Waiver of Trial by Jury), 11.13 (Enforcement) and 11.15 (Non-survival of Representations, Warranties and Covenants) of the
Merger Agreement are incorporated herein by reference and shall apply to this Agreement, mutatis mutandis. 
 [Signature
page follows] 

  
 7 

 IN WITNESS WHEREOF, the Parties have executed and delivered this Company Support Agreement
as of the date first above written. 
  

			
	10X CAPITAL VENTURE ACQUISITION CORP. II
		
	 By:
	 	          

	 Name:

	 Title:

  

			
	[ ⚫ ]
		
	By:	 	          

	Name:
	Title:

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