Document:

Exhibit
4.1

 

NUMBERUNITS

U

SEE
REVERSE FOR CERTAIN DEFINITIONS

 

CUSIP
____________

 

DUNE
ACQUISITION CORPORATION

UNITS
CONSISTING OF ONE SHARE OF CLASS A COMMON STOCK AND ONE-HALF 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 share of Class A common stock, par value $0.0001 per share (“Common
Stock”), of Dune Acquisition Corporation, a Delaware corporation (the “Company”), and
one-half of one redeemable warrant (the “Warrant”). Each whole Warrant entitles the holder to purchase
one share of Common Stock for $11.50 per share (subject to adjustment). Only whole Warrants are exercisable. 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 Cantor Fitzgerald & Co. 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.

 

This
certificate is not valid unless countersigned by the Transfer Agent and registered by the 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 a duly authorized signatory of the Company.

 

	Authorized
    Signatory	Transfer
    Agent 

 

     

     

    

 

Dune
Acquisition Corporation

 

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 equity 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

    TEN ENT—  as tenants by the entireties

    JT TEN—  as joint tenants with right of survivorship and not as tenants  in common	UNIF
    GIFT MIN ACT	                 Custodian                    

        (Cust)                        (Minor)

         

        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 DENTIFYING 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 UNDER THE SECURITIES
EXCHANGE ACT OF 1934, AS AMENDED (OR ANY SUCCESSOR RULE)).

 

As
more fully described in, and subject to the terms and conditions described in, the Company’s final prospectus for its initial
public offering 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 in the event that (i)
the Company redeems the shares of Common Stock sold in the Company’s initial public offering because it does not consummate
an initial business combination by the date set forth (the “Last Date”) in the Company’s Amended and Restated
Certificate of Incorporation, as the same may be amended from time to time (the “Charter”), (ii) the Company redeems
the shares of Common Stock sold in its initial public offering properly tendered in connection with a stockholder vote to amend
the Charter 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 the Last Date or with respect to any other material 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.Exhibit 4.2

 

SHARES

NUMBER

 

C-

 

SEE
REVERSE FOR CERTAIN DEFINITIONS

 

CUSIP

 

DUNE
ACQUISITION CORPORATION

 

CLASS
A COMMON STOCK

 

THIS
CERTIFIES THAT is the owner of fully paid and non-assessable shares of Class A common stock, par value $0.0001 per share (the
“Common Stock”), of Dune Acquisition Corporation, a Delaware corporation (the “Company”),
transferable on the books of the Company in person or by duly authorized attorney upon surrender of this certificate properly
endorsed.

 

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

 

Witness
the facsimile signature of a duly authorized signatory of the Company.

 

	 	 	 
	Authorized
    Signatory	 	Transfer
    Agent

 

     

     

    

 

DUNE
ACQUISITION CORPORATION

 

The
Company will furnish without charge to each stockholder who so requests, a statement of the powers, designations, preferences
and relative, participating, optional or other special rights of each class of equity 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 Certificate of Incorporation
and all amendments thereto and resolutions of the Board of Directors providing for the issue of securities (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—	______

    (Cust)	

    Custodian	________

    (Minor)
	TEN
    ENT — as tenants by the entireties	 	 	 	 
	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 Common Stock represented by the within Certificate, and hereby irrevocably constitutes

and appoints

 

Attorney
to transfer the said shares of Common Stock 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).
	 

 

As
more fully described in, and subject to the terms and conditions described in, the Company’s final prospectus for its initial
public offering 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 in the event that (i)
the Company redeems the shares of Common Stock sold in the Company’s initial public offering because it does not consummate
an initial business combination by the date set forth (the “Last Date”) in the Company’s Amended and Restated
Certificate of Incorporation, as the same may be amended from time to time (the “Charter”), (ii) the Company redeems
the shares of Common Stock sold in its initial public offering properly tendered in connection with a stockholder vote to amend
the Charter 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 the Last Date or with respect to any other material 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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