Document:

Exhibit 4.1

 

	
    NUMBER

    U-__________
	 	UNITS

 

	SEE REVERSE FOR

CERTAIN DEFINITIONS	ACCRETION ACQUISITION CORP.	 

 

CUSIP 00438Y 206

 

UNITS CONSISTING OF ONE SHARE OF COMMON STOCK, ONE RIGHT TO RECEIVE ONE-TENTH OF ONE SHARE OF COMMON STOCK,
AND ONE-HALF OF ONE WARRANT

 

	THIS CERTIFIES THAT	 	 

 

	is the owner of  	 	Units.  

 

Each Unit (“Unit”) consists
of one (1) share of common stock, par value $0.001 per share (“Common Stock”), of Accretion Acquisition Corp.,
a Delaware corporation (the “Company”), one right to receive one-tenth of one share of Common Stock (the “Right”),
and one-half of one warrant of the Company (“Warrant”). Each whole Warrant entitles the holder to purchase one share
of Common Stock for $11.50 per share (subject to adjustment). Each Warrant will become exercisable 30 days after the Company’s
completion of an initial merger, capital stock exchange, asset acquisition, or other similar business combination with one or more businesses
or entities (a “Business Combination”) and will expire unless exercised before 5:00 p.m., New York City Time, on the
fifth anniversary of the completion of an initial Business Combination, or earlier upon redemption or liquidation. The Common Stock,
Right(s), and Warrant(s) comprising the Unit(s) represented by this certificate are not transferable separately until ninety
(90) days following the IPO, unless EarlyBirdCapital, Inc. and Stephens Inc. inform the Company of their decision to allow earlier
separate trading, except that in no event will the Common Stock, Rights, and Warrants be separately tradeable until the Company has filed
an audited balance sheet reflecting the Company’s receipt of the gross proceeds of its initial public offering and issued a press
release announcing when such separate trading will begin. The terms of the Rights are governed by a Rights Agreement, dated as of ___________,
2021, between Continental Stock Transfer & Trust Company (“Continental”), as Rights 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. The terms of the Warrants are governed by a Warrant Agreement, dated as of ___________, 2021, between the Company and Continental,
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 Rights Agreement and 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 Registrar of the Company. Witness the facsimile seal of the Company and the facsimile signatures of its duly
authorized officers.

 

	By	 	 	 
	 	 	 	 
	 	Chairman	 	Secretary

 

     

     

    

 

Accretion Acquisition Corp.

 

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	 
	 	 	 	 	 	 	(Cust)	 	(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 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) SHOULD 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).	 

 

     

     

    

 

The holder(s) of this certificate shall be
entitled to receive a pro-rata portion of the funds from the trust account with respect to the Common Stock underlying the unit(s) represented
by this certificate only in the event that (i) the Company is forced to liquidate because it does not consummate an initial business
combination within the period of time set forth in the Company’s Amended and Restated Certificate of Incorporation, as the same
may be amended from time to time (the “Charter”) or (ii) if the holder seeks to convert its shares upon consummation
of, or sell its shares in a tender offer in connection with, an initial business combination or in connection with certain amendments
to the Charter. 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

 

	
    NUMBER

    ______C
	 	SHARES

 

ACCRETION ACQUISITION CORP.

 

INCORPORATED UNDER THE LAWS OF DELAWARE

 

COMMON STOCK

 

SEE REVERSE FOR

CERTAIN DEFINITIONS

 

	This Certifies that	CUSIP 00438Y 107

 

is the owner of

 

FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON
STOCK OF THE PAR VALUE OF $0.001 EACH OF

 

ACCRETION ACQUISITION CORP.

 

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 shares of Common Stock issued in its initial public offering and liquidate if it is unable to complete an initial business combination
within the time period set forth in the Company’s Amended and Restated Certificate of Incorporation, as in effect at such time.

 

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

 

Witness the facsimile seal of the Company and
the facsimile signatures of its duly authorized officers.

 

Dated:

 

	 	 	 
	CHAIRMAN	 	SECRETARY

 

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	 
	 	 	 	 	 	 	(Cust)	 	(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.

 

     

     

    

 

Accretion Acquisition Corp.

 

The Company will furnish without charge to each
stockholder who so requests 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.
This certificate and the shares represented thereby are issued and shall be held subject to all the provisions of the Amended and Restated
Certificate of Incorporation and all amendments thereto and resolutions of the Board of Directors (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.

 

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)
	 	shares

of the capital stock represented by the within Certificate, and
do hereby irrevocably constitute and appoint

 

	 	Attorney

to transfer the said stock 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) SHOULD 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).	 

 

The holder(s) of this certificate shall be
entitled to receive a pro-rata portion of the funds from the trust account only in the event that (i) the Company is forced to liquidate
because it does not consummate an initial business combination within the period of time set forth in the Company’s Amended and
Restated Certificate of Incorporation, as the same may be amended from time to time (the “Charter”) or (ii) if the holder
seeks to convert its shares upon consummation of, or sell its shares in a tender offer in connection with, an initial business combination
or in connection with certain amendments to the Charter. 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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