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


 


MUDRICK CAPITAL ACQUISITION CORPORATION


Incorporated Under the Laws of the State of Delaware


 


CUSIP 624745 113


 


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 Mudrick Capital Acquisition Corporation, 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 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.


 




     


     


    

 


	 	MUDRICK CAPITAL ACQUISITION CORPORATION




 


	 	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                 ,
2018 (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.


 


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 Mudrick Capital Acquisition
Corporation (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, Working Capital Warrant or Forward Purchase 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 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)).