Exhibit 4.2


 


NUMBER


C-


 


SHARES


SEE REVERSE FOR


CERTAIN DEFINITIONS


CUSIP 519345 102


 


LAVA MEDTECH ACQUISITION CORP.


 


INCORPORATED UNDER THE LAWS OF THE STATE OF
DELAWARE


CLASS A COMMON STOCK


 


This Certifies that [__] is the owner of FULLY PAID AND NON-ASSESSABLE
SHARES OF THE PAR VALUE OF $0.0001 EACH OF THE CLASS A COMMON STOCK OF


 


LAVA MEDTECH ACQUISITION CORP.


 


(THE “CORPORATION”)


 


transferable on the books of the Corporation in
person or by duly authorized attorney upon surrender of this certificate properly endorsed.


 


The Corporation will be forced to redeem all of
its shares of Class A common stock if it is unable to complete a business combination by the date set forth in the Corporation’s
amended and restated certificate of incorporation, all as more fully described in the Corporation’s final prospectus dated [__],
2021.


 


This certificate is not valid unless countersigned
by the Transfer Agent and registered by the Registrar.


 


Witness the seal of the Corporation and the facsimile
signatures of its duly authorized officers.


 


	
    Secretary

     
	 	[Corporate Seal] 

Delaware	 	President
	 	 	 	 	 


 






    


     


    

 


LAVA MEDTECH ACQUISITION CORP.


 


The Corporation will furnish without charge to
each stockholder who so requests the powers, designations, preferences and relative, participating, optional or other special rights of
each class of stock or series thereof of the Corporation and the qualifications, limitations, or restrictions of such preferences and/or
rights. This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the Corporation’s
amended and restated certificate of incorporation and all amendments thereto and resolutions of the Corporation’s Board of Directors
providing for the issue of securities (copies of which may be obtained from the secretary of the Corporation), to all of which the holder
of this certificate by acceptance hereof assents. The following abbreviations, when used in the inscription on the face of this certificate,
shall be construed as though they were written out in full according to applicable laws or regulations:


 


 


	TEN COM	 	–	 	as tenants in common	 	UNIF GIFT MIN ACT	 	–	 	 	 	Custodian	 	 
	TEN ENT	 	–	 	as tenants by the

entireties	 	 	 	 	 	(Cust)	 	 	 	(Minor)
	JT TEN	 	–	 	as joint tenants with

right of survivorship

and not as tenants in

common	 	 	 	 	 	under Uniform Gifts to Minors Act
	 	 	 	 	 	 	 	(State)	 	 
	 	 	 	 	 	 	 	 	 	 	 	 	 


 


Additional abbreviations may also be used though not in the above list.


 


For value received, [__] hereby sells, assigns and transfers unto


 


	 






(PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
NUMBER(S) OF ASSIGNEE(S))


 





	 


(PLEASE PRINT OR TYPEWRITE NAME(S) AND ADDRESS(ES),
INCLUDING ZIP CODE, OF ASSIGNEE(S))


 


Shares of the capital stock represented by the
within Certificate, and do hereby irrevocably constitutes and appoints [__] Attorney to transfer the said stock on the books of the within
named Corporation with full power of substitution in the premises.


 


Dated:


 


NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT MUST
CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE
WHATEVER.


 


Signature(s) Guaranteed:


By


 


THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE
MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE).


 






    


     


    

 





In each case, as more fully described in the Corporation’s
final prospectus dated [__], 2021, the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds
held in the trust account established in connection with its initial public offering only in the event that (i) the Corporation redeems
the shares of Class A common stock sold in its initial public offering and liquidates because it does not consummate an initial business
combination by the date set forth in the Corporation’s amended and restated certificate of incorporation, (ii) the Corporation redeems
the shares of Class A common stock sold in its initial public offering in connection with a stockholder vote to amend the Corporation’s
amended and restated certificate of incorporation (A) to modify the substance or timing of the Corporation’s obligation to allow
redemption in connection with its initial business combination or to redeem 100% of the Class A common stock if it does not consummate
an initial business combination by the date set forth in the Corporation’s amended and restated certificate of incorporation or
(B) with respect to any other provision relating to the rights of holders of the Class A common stock or pre-initial business combination
activity, or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of Class A common stock in connection
with a tender offer (or proxy solicitation, solely in the event the Corporation seeks stockholder approval of the proposed initial business
combination) setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s) have
any right or interest of any kind in or to the trust account.