Exhibit 4.2


 


SPECIMEN CLASS A ORDINARY SHARE
CERTIFICATE


 


NUMBER SHARES


 


Frazier Lifesciences Acquisition Corporation


INCORPORATED UNDER THE LAWS OF THE CAYMAN
ISLANDS


 


CLASS A ORDINARY SHARES


 


SEE REVERSE FOR


CERTAIN DEFINITIONS


 


CUSIP – G3710A 105


 


This certifies that           is
the owner of


 


FULLY PAID AND NON-ASSESSABLE CLASS A
ORDINARY SHARES OF THE PAR VALUE OF US$0.0001 EACH OF Frazier Lifesciences Acquisition Corporation (THE “COMPANY”)


 


subject to the Company’s amended
and restated memorandum and articles of association, as the same may be amended from time to time, and transferable on the books
of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.


 


The Company will be forced to redeem
all of its Class A ordinary shares if it is unable to complete a business combination within the period set forth in the Company’s
amended and restated memorandum and articles of association, as the same may be amended from time to time, all as more fully described
in the Company’s final prospectus dated          , 2020.


 


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


 


Witness the facsimile signatures of its
duly authorized officers.


 


Dated:  __________


 


	By:	 	 	 
	 	Chief Executive Officer		Chief Financial Officer




 



     


     


    

 


Frazier Lifesciences Acquisition Corporation


 


The Company will furnish
without charge to each shareholder who so requests the powers, designations, preferences and relative, participating, optional
or other special rights of each class of shares or series thereof of the Company 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 Company’s amended and restated memorandum and articles of association, as the same may be amended
from time to time, and resolutions of the Board of Directors providing for the issue of Class A ordinary shares (copies of
which may be obtained from the secretary of the Company), 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 represented by the within Certificate,
and does hereby irrevocably constitute and appoint          Attorney
to transfer the said shares on the books of the within named Company 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:
	 
	 	 
	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 UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED (OR ANY SUCCESSOR RULE).	 


 


In each case, as more fully described in
the Company’s final prospectus dated                 , 2020,        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 the Company’s initial public offering only (i) in the event of the redemption of the Company’s Class A
ordinary shares sold in its initial public offering if the Company does not consummate an initial business combination within the
period of time set forth in the Company’s amended and restated memorandum and articles of association, as the same may be
amended from time to time, (ii) in connection with a shareholder vote to amend the Company’s amended and restated memorandum
and articles of association (A) to modify the substance or timing of the Company’s obligation to provide holders of
the Class A ordinary shares the right to have their shares redeemed in connection with the Company’s initial business
combination or to redeem 100% of the Class A ordinary shares if the Company does not complete its initial business combination
within the time period set forth therein or (B) with respect to any other provision relating to the rights of holders of the
Class A ordinary shares, and (iii) if the holder(s) seek(s) to redeem for cash his, her, its or their respective
Class A ordinary shares in connection with a tender offer (or proxy solicitation, solely in the event the Company seeks shareholder
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 to or in the trust account.