Document:

EX-4.3

 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 

GIGCAPITAL, INC.

Incorporated Under the Laws of the State of Delaware 

CUSIP [•] 

Warrant Certificate 

This Warrant Certificate certifies
that                , or its registered assigns, is the registered holder of ____ warrant(s) evidenced hereby (the “Warrants” and
each, a “Warrant”) to purchase shares of Common Stock, $.0001 par value (“Common Stock”), of GigCapital, Inc., a Delaware corporation
(the “Company”). Each whole 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. 

 
			
	GIGCAPITAL, INC.
		
	 By:
	 	 
		 	 Name:

Title:

	
	 CONTINENTAL STOCK TRANSFER & TRUST COMPANY as Warrant Agent

		
	 By:
	 	 
		 	 Name:

Title:

 [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 December [•] , 2017 (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 GigCapital, Inc.
(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 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)).EX-4.4

 Exhibit 4.4 

NUMBER RIGHTS 
 U-[•] 

SEE REVERSE FOR CERTAIN 
 DEFINITIONS 

CUSIP [•] 
 GIGCAPITAL,
INC. 
 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 

RIGHT 
 THIS CERTIFIES THAT
                is the owner of                     Right(s)
(“Rights”) to receive one-tenth (1/10) of one share of the common stock, par value $0.0001 per share (“Common Stock”), of GigCapital, Inc.,a Delaware corporation (the
“Company”) for each Right evidenced by this Right Certificate on the Company’s completion of an initial business combination (as defined in the Registration Statement, as defined below), upon surrender of this Right
Certificate pursuant to the Rights Agreement (the “Rights Agreement”) dated December [•], 2017, by and between the Company and Continental Stock Transfer & Trust Company (the “Rights
Agent”). In no event will the Company be required to net cash settle any Right. For the purposes hereof, the “Registration Statement” refers to the Registration Statement on Form S-1, File No. 333-[•],
and the prospectus forming a part thereof (collectively, the “Registration Statement”), initially filed with the Securities and Exchange Commission on November [•], 2017. 

Upon liquidation of the Company in the event an initial business combination is not consummated during the required period as identified in the Registration
Statement, as the same may be amended from time to time, the Right(s) shall expire and be worthless. The holder of a Right or Rights shall have no right or interest of any kind in the Company’s trust account (as defined in the Registration
Statement). 
 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 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 Rights Agent shall be affected by any
notice to the contrary. 
 Holders of a Right or Rights are not entitled to any of the rights of a stockholder of the Company. 

This Certificate is not valid unless countersigned by the Transfer Agent and Registrar of the Company. 

Witness the facsimile signature of its duly authorized officers. 
  

					
	  
 Secretary
	 		  	  
 President

 GigCapital, Inc. 

The Company will furnish without charge to each rightholder 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 rights represented
thereby are issued and shall be held subject to all the provisions of the Rights Agreement, and all amendments thereto, 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)
		 		  		  		  	Under Uniform Gifts to Minors
			
	 JT TEN —   as joint tenants with right of survivorship
and not as tenants in common
	  		  	 Act                     

(State)

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

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 the said Rights on the books of the within named Company with 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) 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)).

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