Document:

Exhibit 4.2 

 

	NUMBER	 	NUMBER
	 	 	C-
	 	 	SHARES
	 	 	SEE REVERSE FOR CERTAIN DEFINITIONS
	 	 	CUSIP- 89628U108

 

TRINE ACQUISITION
CORP.

 

INCORPORATED
UNDER THE LAWS OF THE STATE OF DELAWARE 

CLASS A COMMON STOCK

 

This Certifies that

 

is the owner of

 

FULLY PAID AND NON-ASSESSABLE SHARES
OF THE PAR VALUE OF $0.0001 EACH OF THE CLASS A COMMON STOCK OF

 

TRINE 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 Class A common stock if it is unable to complete a business combination by                      ,
2021, all as more fully described in the Company’s final prospectus dated                        ,
2019.

 

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

 

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

 

	Chief Executive Officer	[Corporate Seal] Delaware	Chief Financial Officer
	 	 	 

 

     

     

    

 

TRINE 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 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	—	 	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 capital 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).

 

In each case, as more fully described
in the Company’s final prospectus dated                   ,
2019, 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 its initial public offering only in the event that (i) the Company redeems the shares
of Class A common stock sold in the Company’s initial public offering and liquidates because it does not consummate
an initial business combination by                   ,
2021, (ii) the Company redeems the shares of Class A 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 to modify the substance or timing
of the Company’s obligation to redeem 100% of the Class A common stock if it does not consummate an initial business
combination by                   , 2021,
or (iii) if the holder(s) seek(s) to redeem for cash his, her or its respective shares of Class A 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

 

[Form of
Warrant Certificate]

 

[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

 

TRINE
ACQUISITION CORP.

Incorporated Under the Laws of the State of Delaware

 

CUSIP
89628U116

 

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 Class A common stock, $0.0001 par value per share
(“Common Stock”), of Trine 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 Warrants, a holder would be entitled to receive a fractional
interest in a share of Common Stock, the Company will, upon exercise, round down to the nearest whole number the number of shares
of Common Stock to be issued to the Warrant 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.

 

     

     

    

 

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

  

     

     

    

 

[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     
           , 2019 (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, respectively) 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.

 

     

     

    

 

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 Trine 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 of the Warrant
Agreement and the Company has required cashless exercise pursuant to Section 6.3 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 Section 6.3 of the Warrant Agreement.

 

In
the event that the Warrant is a Private Placement Warrant, a Working Capital Warrant or a Post IPO Warrant that is to be exercised
on a “cashless” basis pursuant to subsection 3.3.1(c) 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(c) 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 7.4 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 of Common Stock 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]

 

     

     

    

 

	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)).

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