Document:

Exhibit 4.2

 

	NUMBER	SHARES
	C-	 
	 	CUSIP ________

 

SEE
REVERSE FOR CERTAIN DEFINITIONS 

 

BANNIX
Acquisition Corp. 

 

INCORPORATED
UNDER THE LAWS OF THE STATE OF DELAWARE

COMMON STOCK

 

This
Certifies that ______________________is the owner of _______________________

 

 FULLY
PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.01 EACH OF THE COMMON STOCK OF BANNIX ACQUISITION CORP.

(THE “COMPANY”)

 

 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 if it does not complete a business combination by the date set
forth in the Company’s amended and restated certificate of incorporation, as the same may be amended from time to time, all
as more fully described in the Company’s final prospectus dated ___________, 2021.

 

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

 

 Witness
the facsimile signatures of its duly authorized officers.

 

	 	 	 	 	 
	Secretary	 	Chief Executive Officer	 	Chief Executive Officer

 

    	 

    	 

    

 

BANNIX
Acquisition Corp. 

 

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 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 Company’s amended and restated certificate of incorporation and all
amendments thereto and resolutions of the Company’s 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	—	 	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 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 the common stock represented by the within Certificate, and hereby irrevocably constitutes and appoints ________________ 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(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:

	 By:	 	 

 

 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) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED).

 

In each case, as
more fully described in the Company’s final prospectus for its initial public offering 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 the Company’s 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 (a) to modify the substance or timing of the Company’s obligation to allow redemptions
in connection with its 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 (b) 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.Exhibit 4.3

[FACE]

 

Number

 

Warrants

 

THIS WARRANT SHALL BE VOID IF NOT EXERCISED
PRIOR TO

THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

IN THE WARRANT AGREEMENT DESCRIBED BELOW

 

BANNIX ACQUISITION CORP.

 Incorporated Under the Laws of the State of Delaware

 

CUSIP ___________

 

Warrant Certificate

 

This Warrant Certificate certifies that
, or registered assigns, is the registered holder of warrant(s) evidenced hereby (the “Warrants”
and each, a “Warrant”) to purchase shares of common stock, $0.01 par value per share (“Common
Stock”), of Bannix Acquisition Corp., a Delaware corporation (the “Company”). Each Warrant
entitles the holder, upon exercise during the period set forth in the Warrant Agreement referred to below, to receive from the
Company that number of fully paid and non-assessable shares of Common Stock as set forth below, at the exercise price (the “Exercise
Price”) as determined pursuant to the Warrant Agreement, payable in lawful money (or through “cashless
exercise” as provided for in the Warrant Agreement) of the United States of America upon surrender of this Warrant
Certificate and payment of the Exercise Price at the office or agency of the Warrant Agent referred to below, subject to the conditions
set forth herein and in the Warrant Agreement. Defined terms used in this Warrant Certificate but not defined herein shall have
the meanings given to them in the Warrant Agreement.

 

Each whole Warrant is initially exercisable
for one fully paid and non-assessable share of Common Stock. No fractional shares will be issued upon exercise of any Warrant.
If, upon the exercise of Warrant, a holder would be entitled to receive a fractional interest in a share, the Company will, upon
exercise, round down to the nearest whole number of the number of shares of Common Stock to be issued to the holder. The number
of shares of Common Stock issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events
set forth in the Warrant Agreement.

 

The initial Exercise Price per share of Common
Stock for any Warrant is equal to $11.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain
events set forth in the Warrant Agreement.

 

Subject to the conditions set forth in the Warrant
Agreement, the Warrants may be exercised only during the Exercise Period and to the extent not exercised by the end of such Exercise
Period, such Warrants shall become void.

 

Reference is hereby made to the further provisions
of this Warrant Certificate set forth on the reverse hereof and such further provisions shall for all purposes have the same effect
as though fully set forth at this place.

 

This Warrant Certificate shall not be valid
unless countersigned by the Warrant Agent, as such term is used in the Warrant Agreement.

 

This Warrant Certificate shall be governed by
and construed in accordance with the internal laws of the State of New York, without regard to conflicts of laws principles thereof.

 

    	 

    	 

    

 

	 	BANNIX ACQUISITION CORP.
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 
	   	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Warrant Agent
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 

 

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[Form of Warrant Certificate]

 

[Reverse]

 

The Warrants evidenced by this Warrant Certificate
are part of a duly authorized issue of Warrants entitling the holder on exercise to receive                      shares of Common Stock and are issued
or to be issued pursuant to a Warrant Agreement dated as of              , 2021 (the “Warrant Agreement”), duly executed
and delivered by the Company to Continental Stock Transfer& Trust Company, a New York corporation, as warrant agent (the “Warrant
Agent”), which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is
hereby referred to for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the
Warrant Agent, the Company and the holders (the words “holders” or “holder”
meaning the Registered Holders or Registered Holder) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder
hereof upon written request to the Company. Defined terms used in this Warrant Certificate but not defined herein shall have the
meanings given to them in the Warrant Agreement.

 

Warrants may be exercised at any time during
the Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by this Warrant Certificate may exercise
them by surrendering this Warrant Certificate, with the form of election to purchase set forth hereon properly completed and executed,
together with payment of the Exercise Price as specified in the Warrant Agreement (or through “cashless exercise” as
provided for in the Warrant Agreement) at the principal corporate trust office of the Warrant Agent. In the event that upon any
exercise of Warrants evidenced hereby the number of Warrants exercised shall be less than the total number of Warrants evidenced
hereby, there shall be issued to the holder hereof or his, her or its assignee, a new Warrant Certificate evidencing the number
of Warrants not exercised.

 

Notwithstanding anything else in this Warrant
Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise (i) a registration statement
covering the shares of Common Stock to be issued upon exercise is effective under the Securities Act and (ii) a prospectus
thereunder relating to the shares of Common Stock is current, except through “cashless exercise” as provided for in
the Warrant Agreement.

 

The Warrant Agreement provides that upon the
occurrence of certain events the number of shares of Common Stock issuable upon exercise of the Warrants set forth on the face
hereof may, subject to certain conditions, be adjusted. If, upon exercise of a Warrant, the holder thereof would be entitled to
receive a fractional interest in a share of Common Stock, the Company shall, upon exercise, round down to the nearest whole number
of shares of Common Stock to be issued to the holder of the Warrant.

 

Warrant Certificates, when surrendered at the
principal corporate trust office of the Warrant Agent by the Registered Holder thereof in person or by legal representative or
attorney duly authorized in writing, may be exchanged, in the manner and subject to the limitations provided in the Warrant Agreement,
but without payment of any service charge, for another Warrant Certificate or Warrant Certificates of like tenor evidencing in
the aggregate a like number of Warrants.

 

Upon due presentation for registration of transfer
of this Warrant Certificate at the office of the Warrant Agent a new Warrant Certificate or Warrant Certificates of like tenor
and evidencing in the aggregate a like number of Warrants shall be issued to the transferee(s) in exchange for this Warrant
Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for any tax or other governmental
charge imposed in connection therewith.

 

The Company and the Warrant Agent may deem and
treat the Registered Holder(s) hereof as the absolute owner(s) of this Warrant Certificate (notwithstanding any notation
of ownership or other writing hereon made by anyone), for the purpose of any exercise hereof, of any distribution to the holder(s) hereof,
and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. Neither
the Warrants nor this Warrant Certificate entitles any holder hereof to any rights of a stockholder of the Company.

 

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Election to Purchase

 

(To Be Executed Upon Exercise of Warrant)

 

The undersigned hereby irrevocably elects to exercise
the right, represented by this Warrant Certificate, to receive            shares of
Common Stock and herewith tenders payment for such shares of Common Stock to the order of Bannix Acquisition Corp. (the “Company”)
in the amount of $          in accordance with the terms hereof.  The undersigned requests
that a certificate for such shares of Common Stock be registered in the name of       , whose address is          
and that such shares of Common Stock be delivered to                  
whose address is                .  If said number of shares
of Common Stock is less than all of the shares of Common Stock purchasable hereunder, the undersigned requests that a new Warrant Certificate
representing the remaining balance of such shares of Common Stock be registered in the name of                ,
whose address is                    and that such Warrant
Certificate be delivered to                , whose address
is                .

 

In the event that the Warrant has been called for redemption
by the Company pursuant to Section 6.1 of the Warrant Agreement and the Company has required cashless exercise pursuant
to Section 7.4 of the Warrant Agreement, the number of shares of Common Stock that this Warrant is exercisable for
shall be determined in accordance with subsection 3.3.1(b) and of the Warrant Agreement.

  

In the event that the Warrant is to be exercised on
a “cashless” basis pursuant to Section 7.4 of the Warrant Agreement, the number of shares of Common Stock that
this Warrant is exercisable for shall be determined in accordance with Section 3.3.1(c) of the Warrant Agreement.

 

In the event that the Warrant may be exercised, to the
extent allowed by the Warrant Agreement, through cashless exercise (i) the number of shares of Common Stock that this Warrant is
exercisable for would be determined in accordance with the relevant section of the Warrant Agreement which allows for such cashless exercise
and (ii) the holder hereof shall complete the following: The undersigned hereby irrevocably elects to exercise the right, represented
by this Warrant Certificate, through the cashless exercise provisions of the Warrant Agreement, to receive shares of Common Stock. 
If said number of shares is less than all of the shares of Common Stock purchasable hereunder (after giving effect to the cashless exercise),
the undersigned requests that a new Warrant Certificate representing the remaining balance of such shares of Common Stock be registered
in the name of                , whose address is      
             and that such Warrant Certificate be delivered to                ,
whose address is                .

  

[Signature Page Follows]

 

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	Date: ,        20	 
	 	(Signature)
	 	 
	 	 
	 	 
	 	(Address)
	 	 
	 	(Tax Identification Number)
	 	 
	Signature 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 (OR ANY SUCCESSOR RULE).

 

5

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