Exhibit 10.4


 


FORM OF LOCK-UP AGREEMENT


 


THIS LOCK-UP AGREEMENT (this
“Agreement”) is made and entered into as of [ ● ], 2023 between [ ● ],
a [ ● ] (the “Stockholder”)1
and 10x Capital Venture Acquisition Corp. III, a Cayman Islands exempted company (“10X”). The Stockholder
and 10X 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 such terms in the Merger Agreement (as defined
below).


 


WHEREAS, 10X, Sparks
Energy, Inc., a Delaware corporation and 10X Sparks Merger Sub, Inc., a Delaware corporation, entered into that certain Agreement and
Plan of Merger, dated as of [ ● ], 2022 (as it may be amended, restated
or otherwise modified from time to time in accordance with its terms, the “Merger Agreement”);


 


WHEREAS, the Merger
Agreement contemplates that the Stockholder will receive [ ● ] ([ ● ])
shares of Acquiror Common Stock (as defined in the Merger Agreement) at Closing, including [ ● ]
shares of Acquiror Common Stock issued and subject to price-based vesting (the “Stockholder Shares”); and


 


WHEREAS, the Merger
Agreement contemplates that the Parties will enter into this Agreement, pursuant to which the Acquiror Common Stock held by the Stockholder
immediately after the Effective Time (together with any securities paid as dividends or distributions with respect to such securities
or into which such securities are exchanged or converted) shall become subject to limitations on disposition as set forth herein.


 


NOW, THEREFORE, in
consideration of the premises set forth above, which are incorporated in this Agreement as if fully set forth below, and intending to
be legally bound hereby, the Parties hereby agree as follows:


 


1.   For
purposes of this Agreement:


 


(a)   the
term “Lock-Up Period” means the period beginning on the Closing Date and ending on the date that is twelve (12) months
after the Closing Date; provided, that the Parties may mutually agree to shorten the duration of or otherwise waive the Lock-up Period;


 


(b)   the
term “Lock-Up Shares” means the shares of Acquiror Common Stock held by the Stockholder immediately following the Closing
(for the avoidance of doubt, (x) including the Stockholder Shares, and (y) excluding shares of 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); provided that, for the avoidance of doubt, shares not owned by the Stockholder at Closing shall
not be considered “Lock-Up Shares”;


 


(c)   the
term “Permitted Transferees” means any Person to whom the Stockholder is permitted to transfer Lock-Up Shares prior
to the expiration of the Lock-Up Period pursuant to Section 2(a);


 


(d)   the
term “Prospectus” means the final prospectus of 10X, filed with the United States Securities and Exchange Commission
(File No. 333-253868) on January 11, 2022; and


 


(e)   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).


 





 






		1	Note to Draft: To be executed by each Sparks director,
executive officer and any post-closing pubco stockholder who owns more than 3.0% upon closing.



 






     


     


    

 


2.   Lock-Up
Provisions.


 


(a)   Notwithstanding
the provisions set forth in Section 2(b), the Stockholder or its Permitted Transferees may Transfer the Lock-Up Shares during the
Lock-Up Period (i) to 10X’s officers or directors, (ii) to any Affiliates of the Stockholder; (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
the Stockholder, 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; or (v) by virtue of the laws of the State of Delaware or the Stockholder limited partnership agreement upon dissolution of
the Stockholder, 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 Stockholder.


 


(b)   The
Stockholder 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)	the Transfer Restriction shall expire with respect to an aggregate
of [ ● ]2 ([ ● ]) Lock-Up
Shares, upon the date on which the last reported sale price of the Acquiror Common Stock exceeds $13.50 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;



 


		(ii)	Stockholder may transfer up to an aggregate of [ ● ]
([ ● ])3 Lock-Up Shares in connection with
a marketed, fully committed underwritten follow-on offering following the date that is at least 90 days after the Closing Date;



 


		(iii)	Stockholder may transfer Lock-Up Shares for which the net proceeds
will be used to pay income tax obligations owed by the Stockholder, as provided on a tax return or tax statement provided to 10X in form
reasonably acceptable to 10X; and



 


		(iv)	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)   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.


 


(d)   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 Lock-Up Period.


 


(e)   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:


 





 






		2	Note to Draft: Amount to be 25% of the holding company
shares received in exchange for the existing equity held by the Stockholder at the time of Closing



 


		3	Note to Draft: Amount to be 10% of the holding company
shares received in exchange for the existing equity held by the Stockholder at the time of Closing




 






    2


     


    

 


“THE SECURITIES REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON TRANSFER SET FORTH IN A LOCK-UP AGREEMENT, DATED AS OF [ ● ],
2023, 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.”


 


(f)   For
the avoidance of any doubt, the Stockholder 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.   Miscellaneous.


 


(a)   Effective
Date. Section 1 of this Agreement shall become effective at the Effective Time.


 


(b)   Termination
of the Merger Agreement. Notwithstanding anything to the contrary contained herein, in the event that the Merger Agreement is terminated
in accordance with its terms prior to the Effective Time, this Agreement and all rights and obligations of the Parties hereunder shall
automatically terminate and be of no further force or effect.


 


(c)   Notices.
All notices, consents, waivers and other communications hereunder shall be in writing and shall be deemed to have been duly given when
delivered (i) in person, (ii) by e-mail (having obtained electronic delivery confirmation thereof), (iii) one (1) Business Day after being
sent, if sent by reputable, nationally recognized overnight courier service or (iv) three (3) Business Days after being mailed, if sent
by registered or certified mail, pre-paid and return receipt requested, provided, however, that notice given pursuant to
clauses (iii) and (iv) above shall not be effective unless a duplicate copy of such notice is also given in person or by e-mail (having
obtained electronic delivery confirmation thereof), in each case to the applicable Party at the following addresses (or at such other
address for a Party as shall be specified by like notice):


 


	
     

    If to 10X, to:

     

    10X Capital Venture Acquisition Corp. III

    1 World Trade Ceter

    85th Floor

    New York, NY 10007

    Attn:Hans Thomas, Chief Executive Officer

    E-mail:hans@10xcapital.com

     
	
     

    With a copy to (which shall not constitute notice):

     

    Latham & Watkins LLP

    811 Main Street

    Suite 3700

    Houston, TX 77002

    Attn:J. David Stewart

    Ryan Maierson

    E-mail: j.david.stewart@lw.com

    ryan.maierson@lw.com

	
     

    If to the Stockholder, to:

     

    [ ● ]

    [ ● ]

    [ ● ]

    [ ● ]

    Attn:[ ● ]

    E-mail:[ ● ]
	
     

    With a copy to (which shall not constitute
    notice):

     

    [ ● ]

    [ ● ]

    [ ● ]

    [ ● ]

    Attn: [ ● ]

    E-mail:[ ● ]

     



(d)   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.


 


[Remainder of Page Intentionally Left Blank;
Signature Pages Follow]


 






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


 


	 	STOCKHOLDER:
	 	 
	 	[ ● ]
	 	 
	 	By:	                 
	 	Name:	 
	 	Title:	 



 





	 	10X:
	 	 
	 	10X CAPITAL VENTURE ACQUISITION CORP. III
	 	 
	 	By:	                 
	 	Name: 	 
	 	Title:	 


 


[Signature Page to Lock-Up Agreement]


 


 


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