Exhibit 4.1


 


NUMBER UNITS U-


 


SEE REVERSE FOR CERTAIN DEFINITIONS


 


CUSIP [•]


 


SCIENCE
STRATEGIC ACQUISITION CORP ALPHA


 


UNITS
CONSISTING OF ONE SHARE OF CLASS A COMMON STOCK AND ONE-

THIRD OF ONE WARRANT TO PURCHASE ONE SHARE OF CLASS A COMMON STOCK


 


THIS CERTIFIES THAT is the owner of Units.


 


Each Unit (“Unit”) consists of one
(1) share of Class A common stock, par value $0.0001 per share (“Common Stock”), of Science
Strategic Acquisition Corp Alpha, a Delaware corporation (the “Company”), and one-third (1/3) of one
warrant (each whole warrant, a “Warrant”). Each whole Warrant entitles the holder to purchase one (1) share
(subject to adjustment) of Common Stock for $11.50 per share (subject to adjustment). Each Warrant will become exercisable on the
later of (i) thirty (30) days after the Company’s completion of a merger, capital stock exchange, asset acquisition,
stock purchase, reorganization or other similar business combination with one or more businesses (each a “Business
Combination”), or (ii) twelve (12) months from the closing of the Company’s initial public offering, and
will expire unless exercised before 5:00 p.m., New York City Time, on the date that is five (5) years after the date on which
the Company completes its initial Business Combination, or earlier upon redemption or liquidation (the “Expiration
Date”). The Common Stock and Warrants comprising the Units represented by this certificate are not transferable separately
prior to [●] , 2021, unless Credit Suisse Securities (USA) LLC elects to allow separate trading earlier, subject to the Company’s
filing of a Current Report on Form 8-K with the Securities and Exchange Commission containing an audited balance sheet reflecting
the Company’s receipt of the gross proceeds of the offering and issuing a press release announcing when separate trading
will begin. The terms of the Warrants are governed by a Warrant Agreement, dated as of [●] , 2021, between the Company and
Continental Stock Transfer & Trust Company, as Warrant Agent, and are subject to the terms and provisions contained therein,
all of which terms and provisions the holder of this certificate consents to by acceptance hereof. Copies of the Warrant Agreement
are on file at the office of the Warrant Agent at 17 Battery Place, New York, New York 10004, and are available to any Warrant
holder on written request and without cost.


 


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


 


This certificate shall be governed by and construed in accordance
with the internal laws of the State of New York.


 


Witness the facsimile signature of its duly authorized officers.


 


	Secretary	 	President
	 	 	 



 






    


     


    

 


SCIENCE STRATEGIC ACQUISITION CORP ALPHA


 


The Company will furnish without charge to each unitholder who
so requests, a statement of the powers, designations, preferences and relative, participating, optional or other special rights
of each class of stock or series thereof of the Company and the qualifications, limitations, or restrictions of such preferences
and/or rights.


 


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 sell, assign and transfer
unto ______


 


PLEASE INSERT SOCIAL SECURITY OR


 


OTHER


 


IDENTIFYING NUMBER OF ASSIGNEE


 


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


 


_______ Units represented by the within Certificate, and do
hereby irrevocably constitute and appoint


 


_______ Attorney to transfer the said Units on the books of
the within named Company with full power of substitution in the premises.


 


	Dated	 	 
	 	 	Notice: The signature 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 (OR ANY SUCCESSOR RULE).	 	 


 






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In each case, as more fully described in the Company’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
Company 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 [●], 2023, (ii) the Company redeems the shares of Class A common
stock sold in its initial public offering in connection with a stockholder vote to amend the Company’s second amended and
restated certificate of incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of the
Class A common stock if it does not consummate an initial business combination by [●], 2023, 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 Company 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.


 






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