EX-4.1





 Exhibit 4.1 
  

			
	 NUMBER
	  	
	 U-
	  	UNITS

 SEE REVERSE FOR CERTAIN DEFINITIONS 

CUSIP [ 🌑 ] 

SUPERNOVA PARTNERS ACQUISITION COMPANY, INC. 

UNITS CONSISTING OF ONE SHARE OF CLASS A COMMON STOCK AND ONE-THIRD OF ONE REDEEMABLE WARRANT, EACH
WHOLE WARRANT ENTITLING THE HOLDER 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 Supernova Partners Acquisition Company, Inc., a Delaware corporation (the “Company”), and one-third (1/3) of one
redeemable 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 whole 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”), and (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             , 2020 unless J.P. Morgan Securities LLC and Jefferies LLC elect 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 Company’s initial
public offering and issuing a press release announcing when separate trading will begin. No fractional warrants will be issued upon separation of the Units. The terms of the Warrants are governed by a Warrant Agreement, dated as
of             , 2020, 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 1 State Street, 30th Floor, New York, New York 10004, and are
available to any Warrant holder on written request and without cost. 
 Upon the consummation of the Business Combination, the Units
represented by this certificate shall automatically separate into the Common Stock and Warrants comprising such Units. 












 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	 		 	Chief Financial Officer
			
	 	 		 	
	Transfer Agent	 		 	

 Supernova Partners Acquisition Company, Inc. 

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. 

  
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 For value received,
                         hereby sells, assigns and transfers 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 does 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).

 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 its initial public offering only in the event that (i) the Company redeems the shares of 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 Company’s amended and restated certificate of incorporation, (ii) the Company redeems the shares of Common Stock sold in its initial public offering in connection with a stockholder vote to amend
the Company’s amended and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to allow redemption in connection with the Company’s initial business combination or to redeem 100% of the
Common Stock if it does not consummate an initial business combination by the date set forth in the Company’s amended and restated certificate of incorporation or with respect to any other provision relating to the rights of holders of the
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 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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