Document:

Exhibit 4.2

 

[Form of Class A Ordinary Share Certificate]

 

NUMBER

 

C-

 

	 	SHARES
	 	SEE REVERSE FOR
	 	CERTAIN DEFINITIONS
	 	CUSIP [                   ]

 

TORTOISE ACQUISITION CORP. II

INCORPORATED UNDER THE LAWS OF THE CAYMAN ISLANDS

CLASS A ORDINARY SHARES

 

This Certifies that

 

is the owner of

 

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

 

TORTOISE ACQUISITION CORP. II

(THE “COMPANY”)

 

transferable on the books of the Company in person or by duly
authorized attorney upon surrender of this certificate properly endorsed, and subject to the Company’s amended and restated
memorandum and articles of association, as the same may be amended from time to time (the “Memorandum and Articles”).
The Company will be forced to redeem all of its Class A ordinary shares if it is unable to complete a business combination within
the period of time set forth in the Company’s Memorandum and Articles, as more fully described in the Company’s final
prospectus dated                    
, 2020.

 

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	Cayman Islands	Chief Executive Officer

 

     

     

    

 

TORTOISE ACQUISITION CORP. II

 

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 shares represented thereby are issued and shall be held subject to all the provisions of the Company’s
Memorandum and Articles 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 represented by the within Certificate, and hereby irrevocably
constitutes and appoints                    Attorney
to transfer the said shares 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 THE U.S. SECURITIES AND EXCHANGE COMMISSION 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 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 Class
A ordinary shares sold in its initial public offering and liquidates because it does not consummate an initial business combination
within the period of time set forth in the Memorandum and Articles, (ii)
the Company redeems the Class A ordinary shares sold in its initial public offering in connection with a shareholder vote to approve
an amendment to the Memorandum and Articles that would affect the substance or timing of the Company’s obligation to redeem
100% of the Class A ordinary shares if it does not consummate an initial business combination within the time period set
forth therein or (iii) if the holder(s) seek(s) to redeem for cash
his, her or its respective Class A ordinary shares in connection with a tender offer (or proxy solicitation, solely in the event
the Company seeks shareholder 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 NULL AND VOID IF NOT EXERCISED PRIOR TO

THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

IN THE WARRANT AGREEMENT DESCRIBED BELOW

 

TORTOISE
ACQUISITION CORP. II

Incorporated
Under the Laws of the Cayman Islands

 

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 Class A ordinary shares, $0.0001 par value per share (“Ordinary
Shares”), of Tortoise Acquisition Corp. II, a Cayman Islands exempted company (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 Ordinary Shares as set forth below, at the exercise price (the “Exercise
Price”) as determined pursuant to the Warrant Agreement, payable in lawful money of the United States of America
(or through “cashless exercise” as provided for in the Warrant Agreement) 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
Warrant is initially exercisable for one fully paid and non-assessable Ordinary Share. Fractional shares of ordinary shares shall
not be issued upon exercise of any Warrant. If, upon the exercise of Warrants, a holder would be entitled to receive a fractional
interest in an Ordinary Share, the Company shall, upon exercise, round down to the nearest whole number of Ordinary Shares to
be issued to the warrantholder. The number of Ordinary Shares issuable upon exercise of the Warrants is subject to adjustment
upon the occurrence of certain events as set forth in the Warrant Agreement.

 

The
initial Exercise Price is equal to $11.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain
events as 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. The Warrants may be redeemed, subject
to certain conditions, as set forth in the Warrant Agreement.

 

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.

 

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

 

    2

     

    

 

[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 Ordinary Shares and are issued or to be issued pursuant to a Warrant Agreement dated as of           ,
2020 (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 Ordinary Shares to be issued upon exercise is effective under the Securities Act and
(ii) a prospectus thereunder relating to the Ordinary Shares 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 Ordinary Shares 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 an Ordinary Share, the Company shall, upon exercise, round
down to the nearest whole number of Ordinary Shares 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
shareholder of the Company.

 

    3

     

    

 

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           
Ordinary Shares and herewith tenders payment for such Ordinary Shares to the order of Tortoise Acquisition Corp. II (the “Company”)
in the amount of $           in accordance with the terms hereof. The undersigned
requests that a certificate for such Ordinary Shares be registered in the name of           ,
whose address is            and that such Ordinary Shares be delivered to           
whose address is           . If said number of Ordinary Shares is less than
all of the Ordinary Shares purchasable hereunder, the undersigned requests that a new Warrant Certificate representing the remaining
balance of such Ordinary Shares 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 Ordinary
Shares 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 that is to be exercised on a “cashless” basis
pursuant to [subsection 3.3.1(c)] of the Warrant Agreement, the number of Ordinary Shares 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 Ordinary Shares 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 Ordinary Shares 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 Ordinary Shares. If said number of Ordinary Shares is less than all of the Ordinary
Shares purchasable hereunder (after giving effect to the cashless exercise), the undersigned requests that a new Warrant Certificate
representing the remaining balance of such Ordinary Shares be registered in the name of           ,
whose address is            and that such Warrant Certificate be delivered to
          , whose address is           .

 

[Signature
Page Follows]

 

    1

     

    

 

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 THE U.S. SECURITIES AND EXCHANGE
COMMISSION RULE 17Ad-15 (OR ANY SUCCESSOR RULE)) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

 

 

2

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