Exhibit 4.1


 








NUMBER UNITS

U-[●]


 


SEE REVERSE FOR CERTAIN DEFINITIONS


 


CUSIP [●]


 


TRADEUP ACQUISITION CORP.


 


UNITS CONSISTING OF ONE SHARE OF COMMON STOCK AND
ONE-HALF

REDEEMABLE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK


 


THIS CERTIFIES THAT is the owner of Units.


 


Each Unit (“Unit”)
consists of one (1) share of common stock, par value $0.0001 per share (“Common Stock”), of TradeUP Acquisition Corp, a Delaware
corporation (the “Company”), and one-half of one redeemable warrant (each, a “Warrant”). Each 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) 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 US Tiger Securities, Inc. elects to allow earlier
separate trading, 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 VStock Transfer, LLC, 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 18 Lafayette Place, Woodmere, New York 11598, 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.


 


	 	 	 
	Chief Executive Officer	 	Chief Financial Officer


 


TRADEUP ACQUISITION CORP.


 






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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	 


 






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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 [●], 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 the Company’s 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 [●], 2021 (or at a later date, if extended), (ii) the Company redeems the
shares of common stock sold in its initial public offering in connection with a stockholder vote (x) to amend the Company’s amended
and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of the common
stock if it does not consummate an initial business combination by [●], 2022 or (y) with respect to any other provisions relating
to stockholders’ rights 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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