Document:

Exhibit 4.2

 

	
        NUMBER

        ORSN
	SHARES

 

ORISUN ACQUISITION CORP.

INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

COMMON STOCK

 

	 	
        SEE REVERSE FOR

        CERTAIN DEFINITIONS

         

	This Certifies that	CUSIP [_______]
	is the owner of	 

 

FULLY PAID AND NON-ASSESSABLE SHARES
OF THE PAR VALUE OF $0.00001 EACH

OF THE COMMON STOCK OF

 

ORISUN ACQUISITION CORP.

 

transferable on the books of Orisun Acquisition
Corp., a Delaware corporation (the “Corporation”) in person or by duly authorized attorney upon surrender of this certificate
properly endorsed. The Corporation will be forced to liquidate if it is unable to complete an initial business combination within
the period of time as set forth in the Corporation’s Amended and Restated Certificate of Incorporation, as the same may be
amended from time to time, all as more fully described in the Corporation’s final prospectus dated                     ,
2019

 

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

 

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

 

	Dated:	 	 	 	 
	 	 	 	 	 
	CHIEF EXECUTIVE OFFICER	 	[INSERT SEAL HERE]	 	CHIEF FINANCIAL OFFICER

 

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	under Uniform Gifts to Minors	 	 
	 	 	and not as tenants in common	Act	 	 	 	 	 
	 	 	 	 	(State)	 	 	 	 

 

Additional abbreviations may also be used
though not in the above list.

 

     

     

    

 

Orisun Acquisition Corp.

 

The Corporation 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 Corporation 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 Corporation’s Amended and Restated Certificate of Incorporation and all amendments thereto and
resolutions of the Board of Directors providing for the issue of shares of Common Stock (copies of which may be obtained from the
secretary of the Corporation), 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 Corporation will 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 Corporation is forced to liquidate because
it does not consummate an initial business combination within the period of time set forth in the Corporation’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 his shares upon consummation of, or sell his 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 4.3

 

	
        NUMBER 

        ORSNR
	RIGHTS

 

ORISUN ACQUISITION CORP.

 

INCORPORATED UNDER THE LAWS OF DELAWARE

 

RIGHT

 

SEE REVERSE FOR

CERTAIN DEFINITIONS

 

CUSIP G[___]

 

THIS CERTIFIES THAT, for value received

 

is the registered holder of a right or
rights (each, a “Right”) evidenced by this Rights Certificate, among which, each Right will automatically receive one-tenth
of one share of common stock, with par value of $0.00001 per share (“Common Stock”), of Orisun Acquisition Corp. (the
“Company”) on the Company’s consummation of an initial business combination (as defined in the prospectus relating
to the Company’s initial public offering (“Prospectus”)) upon surrender of this Right Certificate pursuant to
certain rights agreement (the “Rights Agreement”) between the Company and American Stock Transfer & Trust Company,
LLC, as rights agent (the “Rights Agent”). In no event will the Company be required to net cash settle any Right.

 

Upon liquidation of the Company, in the
event an initial business combination is not consummated during the required period as identified in the Company’s Amended
and Restated Certificate of Incorporation, the Right shall expire and be worthless. The holder of a Right shall have no right or
interest of any kind in the Company’s trust account (as defined in the Prospectus).

 

Upon due presentment for registration of
transfer of the Right Certificate at the office or agency of the Rights Agent, a new Right Certificate or Right Certificates of
like tenor and evidencing in the aggregate a like number of Rights shall be issued to the transferee in exchange for this Right
Certificate, without charge except for any applicable tax or other governmental charge. The Company shall not issue fractional
shares upon exchange of Rights. The Company reserves the right to deal with any fractional entitlement at the relevant time in
any manner (as provided in the Rights Agreement).

 

The Company and the Rights Agent may deem
and treat the registered holder as the absolute owner of this Right Certificate (notwithstanding any notation of ownership or other
writing hereon made by anyone), for the purpose of any conversion hereof, of any distribution to the registered holder, and for
all other purposes, and neither the Company nor the Right Agent shall be affected by any notice to the contrary.

 

This Right does not entitle the registered
holder to any of the rights of a shareholder of the Company.

 

Dated:

 

	 	 	 
	PRESIDENT	 	CHIEF FINANCIAL OFFICER

 

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	under Uniform Gifts to Minors
	and not as tenants in common	Act __________
	 	(State)

 

Additional Abbreviations may also be used
though not in the above list.

 

     

     

    

 

Orisun Acquisition Corp.

 

The Company will furnish
without charge to each shareholder who so requests the powers, designations, preferences and relative, participating, optional
or other special rights of each class of shares or series thereof of the Company and the qualifications, limitations, or restrictions
of such preferences and/or rights. This certificate and the rights represented thereby are issued and shall be held subject to
all the provisions of the Memorandum and Articles of Association and all amendments thereto and resolutions of the Board of Directors
providing for the issue of Ordinary Shares (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)
	 
	 
	 
	 

 

	 	 	 rights
	represented by the within Certificate, and do hereby irrevocably constitute
and appoint	 	 

 

	 	 	 Attorney
	to
transfer said rights on the books of the within named Company will 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 of this certificate shall have no right or interest
of any kind in or to the funds held in the Company’s trust account (as defined in the Prospectus).Exhibit 4.4

 

SPECIMEN
WARRANT CERTIFICATE

 

	NUMBER	[    ]
    WARRANTS
	WA-	 

 

(THIS
WARRANT WILL BE VOID IF NOT EXERCISED PRIOR TO 5:00 P.M.

NEW
YORK CITY TIME, FIVE YEARS FROM THE EFFECTIVE DATE OF THE COMPANY’S INITIAL PUBLIC OFFERING)

 

ORISUN
ACQUISITION CORP.

 

CUSIP
__________

 

WARRANT

 

THIS
WARRANT CERTIFIES THAT, for value received                                         ,
or registered agents, is the registered holder of a Warrant or Warrants (the “Warrant”), expiring on a date which
is five (5) years from the effective date of the Company’s initial public offering, to purchase one-half (1/2) of one fully
paid and non-assessable share (the “Warrant Shares”), of common stock, par value $0.00001 per share (the “Common
Stock”), of ORISUN ACQUISITION CORP., a Delaware corporation (the “Company”), for each Warrant evidenced by
this Warrant Certificate. This Warrant Certificate is subject to and shall be interpreted under the terms and conditions of the
Warrant Agreement (as defined below).

 

The
Warrant entitles the holder thereof to purchase from the Company, from time to time, in whole or in part, commencing on the later
to occur of (i) the completion of the Company’s initial business combination or (ii) twelve (12) months following the closing
of the Company’s initial public offering, such number of Warrant Shares at the price of $11.50 per share (the “Warrant
Price”), upon surrender of this Warrant Certificate and payment of the Warrant Price at the office or agency of American
Stock Transfer & Trust Company, LLC (the “Warrant Agent”), such payment to be made subject to the conditions set
forth herein and in the Warrant Agreement, dated [·], 2019, between the Company and the Warrant Agent (the “Warrant
Agreement”). In no event shall the registered holder(s) of this Warrant be entitled to receive a net-cash settlement in
lieu of physical settlement in Warrant Shares of the Company. The Warrant Agreement provides that, upon the occurrence of certain
events, the Warrant Price and the number of Warrant Shares purchasable hereunder, set forth on the face hereof, may be adjusted,
subject to certain conditions. The term Warrant Price as used in this Warrant Certificate refers to the price per Warrant Share
at which Warrant Shares may be purchased at the time the Warrant is exercised.

 

This
Warrant will expire on the date first referenced above if it is not exercised prior to such date by the registered holder pursuant
to the terms of the Warrant Agreement or if it is not redeemed by the Company prior to such date.

 

No
fraction of a Share will be issued upon any exercise of a Warrant. If, upon exercise of a Warrant, a holder would be entitled
to receive a fractional interest in a Share, the Company will, upon exercise, issue or cause to be issued only the largest whole
number of Warrant Shares issuable on such exercise (and such fraction of a Share will be disregarded).

 

Upon
any exercise of the Warrant for less than the total number of full Warrant Shares provided for herein, there shall be issued to
the registered holder(s) hereof or its assignee(s) a new Warrant Certificate covering the number of Warrant Shares for which the
Warrant has not been exercised.

 

Warrant
Certificates, when surrendered at the office or agency of the Warrant Agent by the registered holder(s) hereof in person or by
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 and evidencing
in the aggregate a like number of Warrants.

 

     

     

    

 

Upon
due presentment for registration of transfer of the Warrant Certificate at the office or agency 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 applicable tax or other governmental charge.

 

The
Company and the Warrant Agent may deem and treat the registered holder(s) 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 registered holder(s), and for all other purposes, and neither the Company nor the Warrant Agent shall
be affected by any notice to the contrary.

 

This
Warrant does not entitle the registered holder(s) to any of the rights of a stockholder of the Company.

 

After
the Warrant becomes exercisable and prior to its expiration date, the Company reserves the right to call the Warrant at any time,
with a notice of call in writing to the holder(s) of record of the Warrant, giving thirty (30) days’ written notice of such
call if the last reported sale price of the Common Stock has been equal to or greater than $16.50 per share for any twenty (20)
trading days within a thirty (30) trading day period ending on the third (3rd) trading day prior to the date on which notice of
such call is given, provided that (i) a registration statement under the Securities Act of 1933, as amended (the “Act”)
with respect to the shares of Common Stock issuable upon exercise must be effective and a current prospectus must be available
for use by the registered holders hereof or (ii) the Warrants may be exercised on cashless basis as set forth in the Warrant Agreement
and such cashless exercise is exempt from registration under the Act. The call price is $0.01 per Warrant Share.

 

If
the foregoing conditions are satisfied and the Company calls the Warrant for redemption, each holder will then be entitled to
exercise his, her or its Warrant prior to the date scheduled for redemption; provided that the Company may require the Registered
Holder who desires to exercise the Warrant, to elect cashless exercise as set forth in the Warrant Agreement, and such Registered
Holder must exercise the Warrants on a cashless basis if the Company so requires. Any Warrant either not exercised or tendered
back to the Company by the end of the date specified in the notice of call shall be canceled on the books of the Company and have
no further value except for the $0.01 call price.

 

COUNTERSIGNED:

AMERICAN
STOCK TRANSFER & TRUST COMPANY, LLC,

WARRANT
AGENT

 

BY:________________________________

AUTHORIZED
OFFICER

 

DATED:_____________________________

 

(Signature)

CHIEF
EXECUTIVE OFFICER

 

(Seal)

 

(Signature)

CHIEF
FINANCIAL OFFICER

 

 

[REVERSE
OF CERTIFICATE]

 

    2

     

    

 

SUBSCRIPTION
FORM

 

To
Be Executed by the Registered Holder(s) in Order to Exercise Warrants

 

The
undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive shares of Common
Stock in accordance with the terms of this Warrant Certificate and pursuant to the method selected below. Capitalized terms used
herein and not otherwise defined have the respective meanings set forth in the Warrant Certificate. PLEASE CHECK ONE METHOD OF
PAYMENT:

 

	 	 	 	 	 
	 	 	
 

	 	a “Cash Exercise” with respect to                  Warrant Shares; and/or
	 	 	 
	 	 	
 

	 	
        a “Cashless
        Exercise” with respect to
                         Warrant Shares because on
        the date of this exercise, there is no effective registration statement registering the Warrant Shares, or the
        prospectus contained therein is not available for the resale of the Warrant Shares, in which event the Company shall deliver
        to the registered holder(s)                 
        shares of Common Stock pursuant to Section 3.3.2 of the Warrant Agreement.

 

The
undersigned requests that a certificate for such shares be registered in the name(s) of:

 

	 
	
 

	(PLEASE TYPE OR PRINT NAME(S) AND ADDRESS)
	 
	 
	
 

	 
	 
	
 

	 
	 
	
 

	(SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER(S))

 

	and be delivered to	 	 
	 	 	(PLEASE PRINT OR TYPE NAME(S) AND ADDRESS)

 

and,
if such number of Warrants shall not be all the Warrants evidenced by this Warrant Certificate, that a new Warrant Certificate
for the balance of such Warrants be registered in the name of, and delivered to, the registered holder(s) at the address(es) stated
below:

 

Dated:

 

	
 	 
	(SIGNATURE(S))	 
	 	 
	
	 
	(ADDRESS(ES))	 
	 	 
	
 	 
	 	 
	 	 
	(TAX IDENTIFICATION NUMBER(S))	 

 

    3

     

    

 

ASSIGNMENT

 

To
Be Executed by the Registered Holder in Order to Assign Warrants

 

For
Value Received,                                     
hereby sell(s), assign(s), and transfer(s) unto

 

	 	 
	(PLEASE TYPE OR PRINT NAME(S) AND

 ADDRESS(ES))	 
	 	 
	 	 
	 	 
	 	 
	 	 
	 	 
	(SOCIAL
SECURITY OR TAX IDENTIFICATION NUMBER(S))	 

 

	and to be delivered to	 	
 	 
	 	 	(PLEASE PRINT OR TYPE NAME(S) AND ADDRESS(ES))	 
		 
	
	 
		 
	
	 

(SOCIAL
SECURITY OR TAX IDENTIFICATION NUMBER(S))

 

of
the Warrants represented by this Warrant Certificate, and hereby irrevocably constitute and appoint                     
Attorney to transfer this Warrant Certificate on the books of the Company, with full power of substitution in the premises.

 

Dated:

 

	 	 
	(SIGNATURE(S))	 

 

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).

 

 

4

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