Document:

EX-10.6

 Exhibit 10.6 

UNIT PURCHASE AGREEMENT 

This UNIT PURCHASE AGREEMENT (this “Agreement”) is made as of the [•] day of February, 2021, by and among GigCapital4,
Inc., a Delaware corporation (the “Company”), Oppenheimer & Co. Inc. (“Oppenheimer”) and Nomura Securities International, Inc. (“Nomura”) (Nomura and Oppenheimer each being a
“Subscriber,” and together the “Subscribers”). 
 WHEREAS, the Company desires to sell to the Subscribers
on a private placement basis (the “Sale”) an aggregate of 130,000 private units (the “Initial Private Units”) of the Company, and up to an additional 19,500 private units (the “Additional Private
Units,” and, together with the Initial Private Units, the “Private Units”) of the Company in the event that the underwriters’ 45-day over-allotment option
(“Over-Allotment Option”) is exercised in full or in part, for a purchase price of $10.00 per Private Unit, each Private Unit comprised of one share of common stock of the Company, par value $0.0001 per share (“Common
Stock”), and one-third of one warrant, each whole warrant exercisable to purchase one share of Common Stock (“Warrant”). The shares of Common Stock underlying the Warrants are
hereinafter referred to as the “Warrant Shares.” The shares of Common Stock underlying the Private Units (excluding the Warrant Shares) are hereinafter referred to as the “Private Shares.” The Warrants underlying
the Private Units are hereinafter referred to as the “Private Warrants.” The Private Units, Private Shares, Private Warrants and Warrant Shares, collectively, are hereinafter referred to as the “Securities.” Each
whole Private Warrant is exercisable to purchase one share of Common Stock at an exercise price of $11.50, subject to the adjustments as set forth in the Warrant Agreement (as defined below), during the period commencing on the later of
(i) twelve (12) months from the date of the closing of the Company’s initial public offering of units (the “IPO”) and (ii) 30 days following the consummation of the Company’s initial business
combination (the “Business Combination”), as such term is defined in the registration statement in connection with the IPO, as amended at the time it becomes effective (the “Registration Statement”), filed with the
Securities and Exchange Commission (“SEC”), and expiring on the fifth anniversary of the consummation of the Business Combination (provided that so long as the Private Warrants are held by a Subscriber, its designees or affiliates,
such Subscriber, its designees or affiliates will not be permitted to exercise such Private Warrants after the five year anniversary of the effective date of the Registration Statement); and 

WHEREAS, each Subscriber wishes to purchase the number of Initial Private Units set forth next to such Subscriber’s name
on Schedule A hereto and up to the amount of Additional Private Units set forth next to such Subscriber’s name on Schedule A hereto, at the Initial Purchase Price (as
defined below), and the Company wishes to accept such subscription from each Subscriber. 
 NOW, THEREFORE, in consideration of the premises
and the mutual covenants hereinafter set forth and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and the Subscribers hereby agree as follows: 

1. Agreement to Subscribe. 
 1.1. Purchase
and Issuance of the Private Units. 
  

	 	(a)	 Upon the terms and subject to the conditions of this Agreement, each Subscriber hereby agrees to purchase from
the Company, and the Company hereby agrees to sell to each Subscriber, on the initial Closing Date (as defined below) the number of Initial Private Units set forth next to each Subscriber’s name
on Schedule A hereto in consideration of the payment of the Initial Purchase Price. On the initial Closing Date, the Company shall, at its option, deliver to each Subscriber the certificates representing the
Securities purchased by such Subscriber or effect such delivery in book-entry form. 

  

	 	(b)	 Each Subscriber hereby agrees to purchase up to the amount of Additional Private Units set forth
on Schedule A hereto at $10.00 per Additional Private Unit. The purchase and issuance of the Additional Private Units shall occur only in the event that the Over-Allotment Option is exercised in full or in part.
The total number of Additional Private Units to be purchased hereunder shall be in the same proportion as the proportion of the Over-Allotment Option that is exercised. Each purchase of Additional Private Units shall occur simultaneously with the
consummation of any portion of the Over-Allotment Option. 

  
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 1.2. Purchase Price. 

 

	 	(a)	 As payment in full for the Initial Private Units being purchased under this Agreement, each Subscriber shall
pay the amount set forth next to each Subscriber’s name on Schedule A hereto (the “Initial Purchase Price”) by wire transfer of immediately available funds or by such other method as may be
reasonably acceptable to the Company, to the trust account (the “Trust Account”) at a financial institution to be chosen by the Company, maintained by Continental Stock Transfer & Trust Company, acting as trustee
(“Continental”), on or prior to the initial Closing Date. 

  

	 	(b)	 As payment in full for the Additional Private Units being purchased under this Agreement, each Subscriber shall
pay $10.00 per Additional Private Unit being purchased by wire transfer of immediately available funds or by such other method as may be reasonably acceptable to the Company, to the Trust Account at a financial institution chosen by the Company,
maintained by Continental, on or prior to the Closing Date of the Over-Allotment Option. 

 1.3. Closing. The closing of
the purchase and sale of the Initial Private Units shall take place simultaneously with the closing of the IPO and the closing of the purchase and sale of Additional Private Units shall take place simultaneously with any closing of the
Over-Allotment Option (each, a “Closing Date”). Each of the closings of the purchase and sale of the Private Units shall take place at the offices of DLA Piper LLP (US), 555 Mission Street, Suite 2400, San Francisco, California
94105, or such other place as may be agreed upon by the parties hereto. 
 1.4. Conditions to Closing. The obligation of each Subscriber to
purchase and pay for the Private Units as provided herein shall be contingent upon, and concurrent with, the consummation of the IPO. 
 1.5.
Termination. This Agreement and each of the obligations of the undersigned shall be null and void and without effect if a Closing does not occur prior to December 31, 2021 or if that certain Underwriting Agreement, dated as of the date hereof,
by and among the Company, and Oppenheimer and Nomura, as representatives of the underwriters named therein (the “Underwriting Agreement”), is terminated for any reason. 

2. Representations and Warranties of the Subscribers. 

Each Subscriber individually represents and warrants to the Company only as to such Subscriber that: 

2.1. No Government Recommendation or Approval. Subscriber understands that no federal or state agency has passed upon or made any
recommendation or endorsement of the Company or the Sale of the Securities. 
 2.2. Accredited Investor. Subscriber represents that it is an
“accredited investor” as such term is defined in Rule 501(a) of Regulation D under the Securities Act of 1933, as amended (the “Securities Act”), and acknowledges that the sale contemplated hereby is being made in
reliance, among other things, on a private placement exemption to “accredited investors” under the Securities Act and similar exemptions under state law. 

2.3. Intent. Subscriber is purchasing the Securities solely for investment purposes, for Subscriber’s own account (and/or for the account
or benefit of its members or affiliates, as permitted, pursuant to the terms hereof), and not with a view to the distribution thereof and Subscriber has no present arrangement to sell the Securities to or through any person or entity except as may
be permitted hereunder. Subscriber shall not engage in hedging transactions with regard to the Securities unless in compliance with the Securities Act of 1933, as amended (the “Securities Act”). 

  
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 2.4. Restrictions on Transfer. Subscriber acknowledges and understands the Private Units are
being offered in a transaction not involving a public offering in the United States within the meaning of the Securities Act. The Securities have not been registered under the Securities Act and, if in the future Subscriber decides to offer, resell,
pledge or otherwise transfer the Securities, such Securities may be offered, resold, pledged or otherwise transferred only (i) pursuant to an effective registration statement filed under the Securities Act, (ii) pursuant to an exemption
from registration under Rule 144 promulgated under the Securities Act, if available, or (iii) pursuant to any other available exemption from the registration requirements of the Securities Act, and in each case in accordance with any
applicable securities laws of any state or any other jurisdiction. Notwithstanding the foregoing, Subscriber acknowledges and understands the Securities are subject to transfer restrictions as described in Section 8 hereof. Subscriber agrees
that if any transfer of its Securities or any interest therein is proposed to be made, as a condition precedent to any such transfer, Subscriber may be required to deliver to the Company an opinion of counsel satisfactory to the Company with respect
to such transfer. Absent registration or another available exemption from registration, Subscriber agrees it will not resell the Securities (unless otherwise permitted pursuant to the terms hereof). Subscriber further acknowledges that because the
Company is a shell company, Rule 144 may not be available to Subscriber for the resale of the Securities until the one year anniversary following consummation of the Business Combination of the Company, despite technical compliance with the
requirements of Rule 144 and the release or waiver of any contractual transfer restrictions. 
 2.5. Sophisticated Investor. 

 

	 	(a)	 Subscriber is sophisticated in financial matters and is able to evaluate the risks and benefits of the
investment in the Securities. 

  

	 	(b)	 Subscriber is aware that an investment in the Securities is highly speculative and subject to substantial risks
because, among other things, (i) the Securities are subject to transfer restrictions and have not been registered under the Securities Act and therefore cannot be sold unless subsequently registered under the Securities Act or an exemption from
such registration is available and (ii) Subscriber has waived its redemption rights with respect to the Securities as set forth in Section 5 hereof, and the Securities held by Subscriber are not entitled to, and have no right, interest or
claim to any monies held in the Trust Account, and accordingly Subscriber may suffer a loss of a portion or all of its investment in the Securities. Subscriber is able to bear the economic risk of its investment in the Securities for an indefinite
period of time. 

 2.6. Organization and Authority. Subscriber is duly organized, validly existing and in good standing
under the laws of its state of incorporation or formation and it possesses all requisite power and authority necessary to carry out the transactions contemplated by this Agreement. 

2.7. Authority. This Agreement has been validly authorized, executed and delivered by Subscriber and is a valid and binding agreement
enforceable in accordance with its terms, subject to the general principles of equity and to bankruptcy or other laws affecting the enforcement of creditors’ rights generally. 

2.8. No Conflicts. The execution, delivery and performance of this Agreement and the consummation by Subscriber of the transactions
contemplated hereby do not violate, conflict with or constitute a default under (i) Subscriber’s charter documents, (ii) any agreement or instrument to which Subscriber is a party or (iii) any law, statute, rule or regulation to
which Subscriber is subject, or any agreement, order, judgment or decree to which Subscriber is subject. 
 2.9. No Legal Advice from
Company. Subscriber acknowledges it has had the opportunity to review this Agreement and the transactions contemplated by this Agreement and the other agreements entered into between the parties hereto with Subscriber’s own legal counsel and
investment and tax advisors. Except for any statements or representations of the Company made in this Agreement and the other agreements entered into between the parties hereto, Subscriber is relying solely on such counsel and advisors and not on
any statements or representations of the Company or any of its representatives or agents for legal, tax or investment advice with respect to this investment, the transactions contemplated by this Agreement or the securities laws of any jurisdiction.

  
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 2.10. Reliance on Representations and Warranties. Subscriber understands the Private Units
are being offered and sold to Subscriber in reliance on exemptions from the registration requirements under the Securities Act, and analogous provisions in the laws and regulations of various states, and that the Company is relying upon the truth
and accuracy of the representations, warranties, agreements, acknowledgments and understandings of Subscriber set forth in this Agreement in order to determine the applicability of such provisions. 

2.11. No General Solicitation. Subscriber is not subscribing for the Private Units as a result of or subsequent to any general solicitation or
general advertising, including but not limited to any advertisement, article, notice or other communication published in any newspaper, magazine, or similar media or broadcast over television or radio, or presented at any seminar or meeting or in
the Registration Statement. 
 2.12. Legend. Subscriber acknowledges and agrees the book-entries evidencing each of the Securities shall bear
a restrictive legend (the “Legend”), in form and substance substantially as set forth in Section 4 hereof. 
 3. Representations,
Warranties and Covenants of the Company. 
 The Company represents and warrants to, and agrees with, each Subscriber that: 

3.1. Valid Issuance of Capital Stock. The total number of shares of all classes of capital stock which the Company has authority to issue is
100,000,000 shares of Common Stock and 1,000,000 shares of preferred stock, $0.0001 par value per share (“Preferred Stock”). As of the date hereof, the Company has issued and outstanding 7,460,000 shares of Common Stock (of which up
to 975,000 shares are subject to forfeiture as described in the Registration Statement) and no shares of Preferred Stock. All of the issued shares of capital stock of the Company have been duly authorized, validly issued, and are fully paid and non-assessable. 
 3.2. Title to Securities. Upon issuance in accordance with, and payment pursuant to, the
terms hereof and that certain warrant agreement (the “Warrant Agreement”) to be entered into between the Company and Continental, as warrant agent, as the case may be, each of the Private Units, Private Shares, Private Warrants and
Warrant Shares will be duly and validly issued, fully paid and non-assessable. On the date of issuance of the Private Units and Warrant Shares shall have been reserved for issuance. Upon issuance in accordance
with, and payment pursuant to, the terms hereof and the Warrant Agreement, as the case may be, each Subscriber will have or receive good title to the Private Units, Private Shares and Private Warrants purchased by such Subscriber under this
Agreement, free and clear of all liens, claims and encumbrances of any kind, other than (i) transfer restrictions hereunder and (ii) transfer restrictions under federal and state securities laws. 

3.3. Organization and Qualification. The Company is a corporation duly incorporated, validly existing and in good standing under the laws of
the State of Delaware and has the requisite corporate power to own its properties and assets and to carry on its business as now being conducted. 

3.4. Authorization; Enforcement. (i) The Company has the requisite corporate power and authority to enter into and perform its obligations
under this Agreement and to issue the Securities in accordance with the terms hereof, (ii) the execution, delivery and performance of this Agreement by the Company and the consummation by it of the transactions contemplated hereby have been
duly authorized by all necessary corporate action, and no further consent or authorization of the Company or its Board of Directors or stockholders is required, and (iii) this Agreement constitutes valid and binding obligations of the Company
enforceable against the Company in accordance with its terms, except as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance, moratorium, reorganization, or similar laws relating to, or affecting generally
the enforcement of, creditors’ rights and remedies or by equitable principles of general application and except as enforcement of rights to indemnity and contribution may be limited by federal and state securities laws or principles of public
policy. 

  
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 3.5. No Conflicts. The execution, delivery and performance of this Agreement and the
consummation by the Company of the transactions contemplated hereby do not (i) result in a violation of the Company’s certificate of incorporation or by-laws, (ii) conflict with, or constitute a
default under any agreement or instrument to which the Company is a party or (iii) any law statute, rule or regulation to which the Company is subject or any agreement, order, judgment or decree to which the Company is subject. Other than any
SEC or state securities filings which may be required to be made by the Company subsequent to the Closing, and any registration statement which may be filed pursuant thereto, the Company is not required under federal, state or local law, rule or
regulation to obtain any consent, authorization or order of, or make any filing or registration with, any court or governmental agency or self-regulatory entity in order for it to perform any of its obligations under this Agreement or issue the
Private Units, Private Shares, Private Warrants or Warrant Shares in accordance with the terms hereof. 
 3.6. Additional Representations and
Warranties. The representations and warranties of the Company set forth in the Underwriting Agreement are hereby incorporated herein and are true and correct with the same force and effect as though expressly made herein as of the date hereof. 

4. Legends. 
 4.1. Legend. The Company will
issue the Private Units, Private Shares and Private Warrants, and when issued, the Warrant Shares, purchased by each Subscriber in the name of such Subscriber. The Securities will bear the following Legend and appropriate “stop transfer”
instructions: 
 “THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS AND NEITHER THE SECURITIES NOR ANY INTEREST THEREIN MAY BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT
UNDER THE SECURITIES ACT OR SUCH LAWS OR AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT AND SUCH LAWS WHICH, IN THE OPINION OF COUNSEL FOR THIS CORPORATION, IS AVAILABLE.” 

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO LOCKUP PURSUANT TO A UNIT PURCHASE AGREEMENT BETWEEN
GIGCAPITAL4, INC. AND THE SUBSCRIBERS NAMED THEREIN AND MAY ONLY BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED DURING THE TERM OF THE LOCKUP PURSUANT TO THE TERMS SET FORTH IN THE UNIT SUBSCRIPTION AGREEMENT.” 

4.2. Subscribers’ Compliance. Nothing in this Section 4 shall affect in any way each Subscriber’s obligations and agreements to
comply with all applicable securities laws upon resale of the Securities. 
 4.3. Company’s Refusal to Register Transfer of the
Securities. The Company shall refuse to register any transfer of the Securities, if in the sole judgment of the Company such purported transfer would not be made (i) pursuant to an effective registration statement filed under the Securities
Act, or pursuant to an available exemption from the registration requirements of the Securities Act and (ii) in compliance herewith. 

4.4. Registration Rights. Each Subscriber will be entitled to certain registration rights which will be governed by a registration rights
agreement (“Registration Rights Agreement”) to be entered into among the Subscribers, the Company and others, on or prior to the effective date of the Registration Statement. 

5. Waiver of Liquidation Distributions. 

In connection with the Securities purchased pursuant to this Agreement, each Subscriber hereby waives any and all right, title, interest or
claim of any kind in or to any distributions of the amounts in the Trust Account with respect to the Securities, whether (i) in connection with the exercise of redemption rights if the Company consummates the Business Combination, (ii) in
connection with any tender offer conducted by the Company prior to a Business Combination, (iii) upon the Company’s redemption of shares of Common Stock sold in the Company’s 

  
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IPO upon the Company’s failure to timely complete the Business Combination or (iv) in connection with a stockholder vote to approve an amendment to the Company’s amended and
restated certificate of incorporation, (A) to modify the substance or timing of the Company’s obligation to redeem 100% of the Company’s public shares if the Company does not timely complete the Business Combination or (B) with
respect to any other provision relating to stockholders’ rights or pre-Business Combination activity. In the event any Subscriber purchases shares of Common Stock in the IPO or in the aftermarket, any
additional shares so purchased shall be eligible to receive the redemption value of such shares of Common Stock upon the same terms offered to all other purchasers of Common Stock in the IPO in the event the Company fails to consummate the Business
Combination. 
 6. Terms of Private Warrants. 
 Each
Private Warrant shall have the terms set forth in the Warrant Agreement. 
 7. Lock-Up Period. 

7.1. Each Subscriber acknowledges that the Securities purchased by such Subscriber pursuant to this Agreement will be subject to restrictions
on transfer contained in that certain letter agreement (the “Insider Letter”), dated as of the date hereof, by and among the Company, GigAcquisitions4, LLC, a Delaware limited liability company, and the Subscribers, which Insider
Letter shall be substantially in the form filed as an exhibit to the Registration Statement. 
 7.2. In addition to the restrictions on
transfer described in Section 7.1, each Subscriber acknowledges and agrees that the Private Units and their component parts and the related registration rights will be deemed compensation by the Financial Industry Regulatory Authority
(“FINRA”) and will therefore, pursuant to Rule 5110(g) of the FINRA Manual, be subject to lock-up for a period of 180 days immediately following the date of effectiveness or
commencement of sales in the IPO, subject to FINRA Rule 5110(g)(2). Additionally, the Private Units and their component parts and the related registration rights may not be sold, transferred, assigned, pledged or hypothecated during the
foregoing 180 day period following the effective date of the Registration Statement except to any underwriter or selected dealer participating in the IPO and the bona fide officers or partners of any Subscriber and any such participating
underwriter or selected dealer. Additionally, the Private Units and their component parts and the related registration rights will not be the subject of any hedging, short sale, derivative, put or call transaction that would result in the economic
disposition of such securities by any person for a period of 180 days immediately following the date of effectiveness or commencement of sales in the IPO. 

8. Terms of the Private Units and Private Warrants. 

8.1. The Private Units and their component parts are substantially identical to the units to be offered in the IPO except that: (i) the
Private Units and component parts are subject to the transfer restrictions described in Section 7 hereof, (ii) the Private Warrants will be non-redeemable and may be exercisable on a
“cashless” basis if held by a Subscriber or its permitted transferees, as further described in the Warrant Agreement, (iii) the Private Warrants may not be exercised after the five year anniversary of the effective date of the
Registration Statement if held by a Subscriber, its designees or affiliates and (iv) the Private Units and component parts are being purchased pursuant to an exemption from the registration requirements of the Securities Act and will become
freely tradable only after the expiration of the lockup described above in clause (i) and they are registered pursuant to the Registration Rights Agreement or an exemption from registration is available, and the restrictions described above in
clause (i) has expired. 
 8.2. Each Subscriber agrees that if the Company seeks stockholder approval of a Business Combination, then in
connection with such Business Combination, such Subscriber shall (i) vote the Private Shares owned by it in favor of the Business Combination and (ii) not redeem any Private Shares owned by such Subscriber in connection with such
stockholder approval. 

  
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 9. Governing Law; Jurisdiction; Waiver of Jury Trial. 

This Agreement shall be governed by and construed in accordance with the laws of the State of New York for agreements made and to be wholly
performed within such state. The parties hereto hereby waive any right to a jury trial in connection with any litigation pursuant to this Agreement and the transactions contemplated hereby. 

10. Assignment; Entire Agreement; Amendment. 

10.1. Assignment. Neither this Agreement nor any rights hereunder may be assigned by any party to any other person other than by a Subscriber
to a person agreeing to be bound by the terms hereof and the transfer restrictions applicable to such Subscriber set forth in the Insider Letter. 

10.2. Entire Agreement. This Agreement sets forth the entire agreement and understanding between the parties as to the subject matter thereof
and merges and supersedes all prior discussions, agreements and understandings of any and every nature among them. 
 10.3. Amendment. Except
as expressly provided in this Agreement, neither this Agreement nor any term hereof may be amended, waived, discharged or terminated other than by a written instrument signed by all of the parties hereto. 

10.4. Binding upon Successors. This Agreement shall be binding upon and inure to the benefit of the parties hereto and to their respective
heirs, legal representatives, successors and permitted assigns. 
 11. Notices. 

11.1. Notices. Unless otherwise provided herein, any notice or other communication to a party hereunder shall be sufficiently given if in
writing and personally delivered or sent by facsimile or other electronic transmission with copy sent in another manner herein provided or sent by courier (which for all purposes of this Agreement shall include Federal Express or other recognized
overnight courier) or mailed to said party by certified mail, return receipt requested, at its address provided for herein or such other address as either may designate for itself in such notice to the other. Communications shall be deemed to have
been received when delivered personally, on the scheduled arrival date when sent by next day or 2nd-day courier service, or if sent by facsimile upon receipt of confirmation of transmittal or, if sent by mail,
then three days after deposit in the mail. If given by electronic transmission, such notice shall be deemed to be delivered (i) if by electronic mail, when directed to an electronic mail address at which the stockholder has consented to receive
notice; (ii) if by a posting on an electronic network together with separate notice to the stockholder of such specific posting, upon the later of (1) such posting and (2) the giving of such separate notice; and (iii) if by any
other form of electronic transmission, when directed to the stockholder. 
 12. Counterparts; Electronic Signatures. 

This Agreement may be executed in counterparts, each of which when so executed shall be deemed to be an original and all of which when taken
together shall constitute one and the same instrument. The words “execution,” signed,” “signature,” and words of like import in this Agreement or in any other certificate, agreement or document related to this Agreement
shall include images of manually executed signatures transmitted by facsimile or other electronic format (including, without limitation, “pdf”, “tif” or “jpg”) and other electronic signatures (including, without
limitation, DocuSign and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated, received, or stored by electronic means) shall be of
the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law, including the Federal Electronic Signatures in Global and National
Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act or the Uniform Commercial Code. 

  
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 13. Survival; Severability. 

13.1. Survival. The representations, warranties, covenants and agreements of the parties hereto shall survive each Closing Date. 

13.2. Severability. In the event that any provision of this Agreement becomes or is declared by a court of competent jurisdiction to be
illegal, unenforceable or void, this Agreement shall continue in full force and effect without said provision; provided that no such severability shall be effective if it materially changes the economic benefit of this Agreement to any party. 

14. Headings. 
 The titles and subtitles
used in this Agreement are used for convenience only and are not to be considered in construing or interpreting this Agreement. 
 [remainder
of page intentionally left blank] 

  
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 IN WITNESS WHEREOF, the parties hereto have executed this Agreement to be effective as of
the date first set forth above. 
  

			
	COMPANY:
	
	GIGCAPITAL4, INC.
		
	By:	 	          

	Name:
	Title:
	
	SUBSCRIBERS:
	
	OPPENHEIMER & CO. INC.
		
	By:	 	          

	Name:
	Title:
	
	NOMURA SECURITIES INTERNATIONAL, INC.
		
	By:	 	          

	Name:
	Title:

 [Signature Page to Unit Purchase Agreement] 

  
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 SCHEDULE A 

 

													
	 Subscriber
	  	Initial Private
Units	 	  	Purchase
Price	 	  	Maximum Additional
Private Units	 
	 Oppenheimer & Co. Inc.
	  				  	$	 	 	  			
	 Nomura Securities International, Inc.
	  				  	$	 	 	  			
		  	  
	  
	 	  	  
	  
	 	  	  
	  
	 
	 Total
	  	 	130,000	 	  	$	 1,300,000	 	  	 	19,500	
		  	  
	  
	 	  	  
	  
	 	  	  
	  
	 

  
 10EX-10.7

 Exhibit 10.7 

REGISTRATION RIGHTS AGREEMENT 

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is entered into as of the [DAY] day of [MONTH], 2021, by and
among GigCapital4, Inc., a Delaware corporation (the “Company”), and the undersigned parties listed under Holders on the signature page hereto (each such party, and any person or entity who hereafter becomes a party to this
Agreement pursuant to Section 5.2, a “Holder” and collectively, the “Holders”). 

WHEREAS, on December 21, 2020, the Company and GigAcquisitions4, LLC, a Delaware limited liability company (the
“Sponsor”), entered into a subscription agreement pursuant to which the Company issued and sold 7,460,000 shares (the “Founder Shares”) of its common stock, par value $0.0001 per share
(“Common Stock”) to the Sponsor; 
 WHEREAS, on [DATE], 2021, the Company and the Sponsor, and the Company,
and Oppenheimer & Co. Inc. and Nomura Securities International, Inc. (each such party an “IPO Underwriter” and collectively, the “IPO Underwriters”) entered into separate unit purchase
agreements, pursuant to which the Sponsor and Underwriters agreed to purchase an aggregate of 930,000 units of the Company (or up to 999,500 units of the Company if the Underwriters’ over-allotment option in connection with the Company’s
initial public offering is exercised in full) (the “Private Units”), with each such unit consisting of one share of Common Stock (all of such shares, collectively, the “Private Shares”) and one-third of one warrant, each whole warrant entitling the holder to purchase one share of Common Stock at an exercise price of $11.50 per share (all of such whole warrants, collectively, “Private
Warrants”), in a private placement transaction occurring simultaneously with the closing of the Company’s initial public offering; 

WHEREAS, on [DATE], 2021, the Company issued and sold 15,000 shares (collectively, the “Insider Shares”) of
Common Stock as follows: 5,000 shares of Common Stock to Brad Weightman and 10,000 shares of Common Stock to Dorothy Hayes (collectively, the “Insiders”) in consideration for their future services as the Company’s Chief
Financial Officer and director, respectively; and 
 WHEREAS, the Sponsor, the Insiders, the IPO Underwriters, and the Company desire
to set forth certain matters regarding the Registrable Securities (as defined below) owned by the Holders. 
 NOW, THEREFORE, in
consideration of the mutual covenants and agreements set forth herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 

1. DEFINITIONS. The following capitalized terms used herein have the following meanings: 

“Adverse Disclosure” means any public disclosure of material non-public
information, which disclosure, in the good faith judgment of the Chief Executive Officer or Chief Financial Officer of the Company, after consultation with counsel to the Company, (i) would be required to be made in any Registration Statement
or Prospectus in order for the applicable Registration Statement or Prospectus not to contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements contained therein (in the case of any prospectus
and any preliminary prospectus, in the light of the circumstances under which they were made) not misleading, (ii) would not be required to be made at such time if the Registration Statement were not being filed, and (iii) the Company has
a bona fide business purpose for not making such information public. 
 “Agreement” means this Agreement, as
amended, restated, supplemented, or otherwise modified from time to time. 
 “Board” means the Board of Directors of
the Company. 
 “Business Combination” means the acquisition of direct or indirect ownership through a merger, share
exchange, asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses or entities, involving the Company. 

  
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 “Commission” means the Securities and Exchange Commission, or any
other federal agency then administering the Securities Act or the Exchange Act. 
 “Common Stock” has the meaning
set forth in the Recitals. 
 “Company” is defined in the preamble to this Agreement. 

“Demand Registration” has the meaning set forth in Section 2.1.1. 

“Demanding Holder” has the meaning set forth in Section 2.1.1. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission
promulgated thereunder, all as the same shall be in effect at the time. 
 “Form
S-1” has the meaning set forth in Section 2.1.1. 

“Form S-3” has the meaning set forth in Section 2.3.

 “Founder Shares” has the meaning set forth in the Recitals. 

“Founders” has the meaning set forth in the Recitals. 

“Holder Indemnified Party” has the meaning set forth in Section 4.1. 

“Indemnified Party” has the meaning set forth in Section 4.3. 

“Indemnifying Party” has the meaning set forth in Section 4.3. 

“Insider Letters” means those certain letter agreements, each dated [DATE], 2021, in one case by and among the Company
and each of the Sponsor and the IPO Underwriters, and in the other case by and among the Company and each of its executive officers and directors. 

“Insider Shares” has the meaning set forth in the Recitals. 

“Insiders” has the meaning set forth in the Recitals. 

“IPO Underwriters” has the meaning set forth in the Recitals. 

“Lock-up Period” means (i) with respect to Registrable Securities other
than the Private Units and underlying securities, including the Private Shares, the Private Warrants, and the shares of Common Stock issued or issuable upon the exercise of any Private Warrants, the period ending on the date that is the earlier of
(A) 12 months after the completion of the Company’s initial Business Combination or (B) subsequent to the Company’s initial Business Combination, (x) the date on which the last sale price of the Common Stock equals or exceeds
$12.50 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 90 days after the
Company’s initial Business Combination, or (y) the date on which the Company completes a liquidation, merger, stock exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange
their shares of Common Stock for cash, securities or other property; and (ii) with respect to Registrable Securities that are Private Units and underlying securities, including the Private Shares, the Private Warrants, and the shares of Common
Stock issued or issuable upon the exercise of any Private Warrants, the period ending on the 30th day after the completion of the Company’s initial Business Combination; provided, further, in each case, that, in no case may the Lock-up Period terminate with respect to Registrable Securities held by the Sponsor, the Insiders or the IPO Underwriters prior to the date which is 180 days from the effective date of the Registration Statement on
Form S-1 filed by the Company with the Commission in connection with its initial public offering. 

“Maximum Number of Securities” has the meaning set forth in Section 2.1.4. 

  
 2 

 “Misstatement” shall mean an untrue statement of a material fact or
an omission to state a material fact required to be stated in a Registration Statement or Prospectus or necessary to make the statements in a Registration Statement or Prospectus in the light of the circumstances under which they were made not
misleading. 
 “Notices” has the meaning set forth in Section 6.3. 

“Permitted Transferees” shall mean a person or entity to whom a Holder of Registrable Securities is permitted to
transfer such Registrable Securities prior to the expiration of the Lock-up Period, pursuant to an Insider Letter and any other applicable agreement between such Holder and the Company, and to any transferee
thereafter. 
 “Piggyback Registration” has the meaning set forth in Section 2.2.1. 

“Private Shares” has the meaning set forth in the Recitals. 

“Private Units” has the meaning set forth in the Recitals. 

“Private Warrants” has the meaning set forth in the Recitals. 

“Prospectus” shall mean the prospectus included in any Registration Statement, as supplemented by any and all
prospectus supplements and as amended by any and all post-effective amendments and including all material incorporated by reference in such prospectus. 

“Register,” “Registered” and “Registration” mean a
registration effected by preparing and filing a registration statement or similar document in compliance with the requirements of the Securities Act, and the applicable rules and regulations promulgated thereunder, and such registration statement
becoming effective. 
 “Registrable Securities” means (i) all of the Founder Shares, (ii) all of the
Insider Shares, (iii) all of the Private Units and underlying securities, including the Private Shares, the Private Warrants, and the shares of Common Stock issued or issuable upon the exercise of any Private Warrants, and (iv) any equity
securities (including the shares of Common Stock issued or issuable upon the exercise or conversion of any such equity security) of the Company issuable upon the conversion of any working capital loans made to the Company by a Holder. Registrable
Securities include any warrants, shares of capital stock or other securities of the Company issued as a dividend or other distribution with respect to or in exchange for or in replacement of any of the securities described in the foregoing clauses
(i) – (iv). As to any particular Registrable Security, such security shall cease to be a Registrable Security when: (a) a Registration Statement with respect to the sale of such security shall have become effective under the Securities Act
and such security shall have been sold, transferred, disposed of or exchanged in accordance with such Registration Statement; (b) such security shall have been otherwise transferred, a new certificate for such security not bearing a legend
restricting further transfer shall have been delivered by the Company and subsequent public distribution of such security shall not require registration under the Securities Act; (c) such security shall have ceased to be outstanding; or
(d) such security is freely saleable under Rule 144 without volume limitations. 
 “Registration Expenses”
means the out-of-pocket expenses of a Registration, including, without limitation, the following: 

(A) all registration and filing fees (including fees with respect to filings required to be made with the Financial Industry Regulatory
Authority and any securities exchange on which the Common Stock is then listed); 
 (B) fees and expenses of compliance with securities or
blue sky laws (including reasonable fees and disbursements of counsel for the Underwriters in connection with blue sky qualifications of Registrable Securities); 

(C) printing, messenger, telephone and delivery expenses; 

(D) reasonable fees and disbursements of counsel for the Company; 

  
 3 

 (E) reasonable fees and disbursements of all independent registered public accountants of
the Company incurred specifically in connection with such Registration; and 
 (F) reasonable fees and expenses of one (1) legal
counsel selected by the majority-in-interest of the Demanding Holders initiating a Demand Registration to be registered for offer and sale in the applicable
Registration. 
 “Registration Statement” means a registration statement filed by the Company with the Commission in
compliance with the Securities Act and the rules and regulations promulgated thereunder for a public offering and sale of securities (other than a registration statement on Form S-4 or Form S-8, or their successors, or any registration statement covering only securities proposed to be issued in exchange for securities or assets of another entity). 

“Representatives” has the meaning set forth in Section 2.1.1. 

“Requesting Holder” has the meaning set forth in Section 2.1.1. 

“Rule 144” means Rule 144 promulgated under the Securities Act. 

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations of the Commission
promulgated thereunder, all as the same shall be in effect at the time. 
 “Underwriter” means a securities dealer
who purchases any Registrable Securities as principal in an underwritten offering and not as part of such dealer’s market-making activities. 

“Underwritten Registration” or “Underwritten Offering” means a Registration in which
securities of the Company are sold to an Underwriter in a firm commitment underwriting for distribution to the public. 

2. REGISTRATION RIGHTS. 

2.1 Demand Registration. 

2.1.1. Request for Registration. Subject to the provisions of Section 2.1.4 and
Section 2.4 hereof, at any time and from time to time on or after the date that the Company consummates a Business Combination, Oppenheimer & Co. and Nomura Securities International, Inc., acting as representatives
of the IPO Underwriters (solely in such representative capacity, the “Representatives”), or the Holders of at least a majority-in-interest of the
then-outstanding number of Registrable Securities (the Representatives or such Holders, the “Demanding Holders”) may make a written demand for Registration under the Securities Act of all or part of their Registrable
Securities, which written demand shall describe the amount and type of securities to be included in such Registration and the intended method(s) of distribution thereof (such written demand, a “Demand Registration”). The
Company shall, within ten (10) days of the Company’s receipt of the Demand Registration, notify, in writing, all other Holders of Registrable Securities of such demand, and each Holder of Registrable Securities who thereafter wishes to
include all or a portion of such Holder’s Registrable Securities in the Demand Registration (each such Holder that includes all or a portion of such Holder’s Registrable Securities in such Registration, a “Requesting
Holder”) shall so notify the Company, in writing, within five (5) days after the receipt by the Holder of the notice from the Company. Upon receipt by the Company of any such written notification from a Requesting Holder, such
Requesting Holder shall be entitled to have its Registrable Securities included in a Registration pursuant to a Demand Registration, and the Company shall effect, as soon thereafter as practicable, but not more than forty-five (45) days
immediately after the Company’s receipt of the Demand Registration, the Registration of all Registrable Securities requested by the Demanding Holders and the Requesting Holders pursuant to such Demand Registration. Under no circumstances shall
the Company be obligated to effect more than an aggregate of two (2) Registrations pursuant to a Demand Registration under this Section 2.1.1 (not counting any Demand Registration initiated solely by the
Representatives, which such Demand Registration shall be limited to one pursuant to Section 3.6 (such Demand Registration); provided, that a Registration shall not be counted for such purposes unless a Form S-1 or any similar long-form registration statement that may be available at such time (“Form S-1”) has become effective and all of the Registrable
Securities requested by the Requesting Holders to be registered on behalf of the Requesting Holders in such Form S-1 Registration have been sold, in accordance with Section 3.1 of
this Agreement. 

  
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 2.1.2. Effective Registration. Notwithstanding the provisions of
Section 2.1.1 above or any other part of this Agreement, a Registration pursuant to a Demand Registration will not count as a Registration unless and until (i) a Form S-1 filed
with the Commission in connection with the Registration has been declared effective by the Commission, and (ii) the Company has complied with all of its obligations under this Agreement with respect thereto; provided, that if, after such
Registration Statement has been declared effective, the offering of Registrable Securities pursuant to a Demand Registration is interfered with by any stop order or injunction of the Commission or any other governmental agency or court, the
Registration Statement with respect to such Demand Registration will be deemed not to have been declared effective, unless and until, (i) such stop order or injunction is removed, rescinded or otherwise terminated, and (ii) a majority-in-interest of the Demanding Holders initiating such Demand Registration thereafter affirmatively elect to continue with such Registration and accordingly notify the
Company in writing of such election, which notice shall be received by the Company not later than five (5) days after the removal of any such stop order or injunction; provided, further, that the Company shall not be obligated to
file a second Registration Statement until a Registration Statement that has been previously filed pursuant to a Demand Registration becomes effective or is terminated. 

2.1.3. Underwritten Offering. Subject to the provisions of Section 2.1.4 and
Section 2.4 hereof, if a majority-in-interest of the Demanding Holders so advise the Company as part of their Demand Registration that the
offering of Registrable Securities pursuant thereto shall be in the form of an Underwritten Offering, then the right of such Demanding Holder or Requesting Holder (if any) to include its Registrable Securities in such Registration shall be
conditioned upon such Holder’s participation in such Underwritten Offering and the inclusion of such Holder’s Registrable Securities in such Underwritten Offering to the extent provided herein. All such Holders proposing to distribute
their Registrable Securities through an Underwritten Offering under this Section 2.1.3 shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten Offering by a majority-in-interest of the Demanding Holders initiating the Demand Registration. 

2.1.4. Reduction of Underwritten Offering. If the managing Underwriter(s) for a Demand Registration that is to be an Underwritten
Offering, in good faith, advises the Company, the Demanding Holders and the Requesting Holders in writing that the dollar amount or number of Registrable Securities which the Demanding Holders and Requesting Holders desire to sell, taken together
with all other shares of Common Stock or other equity securities which the Company desires to sell and the shares of Common Stock, if any, as to which a Registration has been requested pursuant to separate written contractual piggy-back registration
rights held by other stockholders of the Company who desire to sell, exceeds the maximum dollar amount or maximum number of equity securities that can be sold in such Underwritten Offering without adversely affecting the proposed offering price, the
timing, the distribution method, or the probability of success of such Underwritten Offering (such maximum dollar amount or maximum number of securities, as applicable, the “Maximum Number of Securities”), then the Company
shall include in such Underwritten Offering, as follows: (i) first, the Registrable Securities of the Demanding Holders and the Requesting Holders (if any) (pro rata based on the respective number of Registrable Securities that each
Demanding Holder and Requesting Holder (if any) has requested be included in such Underwritten Registration and the aggregate number of Registrable Securities that the Demanding Holders and Requesting Holders have requested be included in such
Underwritten Registration (such proportion is referred to herein as “Pro Rata”)) that can be sold without exceeding the Maximum Number of Securities; (ii) second, to the extent that the Maximum Number of Securities has
not been reached under the foregoing clause (i), the Registrable Securities of Holders (Pro Rata, based on the respective number of Registrable Securities that each Holder has so requested exercising their rights to register their Registrable
Securities pursuant to Section 2.2.1 hereof, without exceeding the Maximum Number of Securities; (iii) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (i) and
(ii), the Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; and (iv) fourth, to the extent that the Maximum Number of Securities has not been reached
under the foregoing clauses (i), (ii) and (iii), the Common Stock or other equity securities of other persons or entities that the Company is obligated to register in a Registration pursuant to separate written contractual arrangements with
such persons and that can be sold without exceeding the Maximum Number of Securities. 

  
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 2.1.5. Withdrawal. The Representatives or a majority-in-interest of the Demanding Holders initiating a Demand Registration pursuant to a Registration under Section 2.1.1, as the case may be, shall have the right to withdraw from a
Registration pursuant to such Demand Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter(s), if any, of their intention to withdraw from such Registration prior to the effectiveness of the
Registration Statement filed with the Commission with respect to the Registration of their Registrable Securities pursuant to such Demand Registration. Notwithstanding anything to the contrary in this Agreement, if with respect to a Demand
Registration, the Representatives or a majority-in-interest of the Demanding Holdings, in each case, initiating a Demand Registration, so withdraw from a Registration
pursuant to such Demand Registration, such Registration shall not count as a Demand Registration provided for in Section 2.1.1 and the Company shall be responsible for the Registration Expenses incurred in connection with a
Registration pursuant to a Demand Registration prior to its withdrawal under this Section 2.1.5; provided that if the Company pays such expenses related to a Demand Registration initiated by the Representatives, such registration shall
count as a Demand Registration for purposes of Section 3.6. 
 2.2 Piggy-Back Registration. 

2.2.1. Piggy-Back Rights. If at any time on or after the date the Company consummates a Business Combination the Company proposes
to file a Registration Statement under the Securities Act with respect to an offering of equity securities, or securities or other obligations exercisable or exchangeable for, or convertible into, equity securities, by the Company for its own
account or for stockholders of the Company for their account (or by the Company and by stockholders of the Company including, without limitation, pursuant to Section 2.1), other than a Registration Statement (i) filed
in connection with any employee stock option or other benefit plan, (ii) for an exchange offer or offering of securities solely to the Company’s existing stockholders, (iii) for an offering of debt that is convertible into equity
securities of the Company, or (iv) for a dividend reinvestment plan, then the Company shall (x) give written notice of such proposed filing to the holders of Registrable Securities as soon as practicable but in no event less than ten
(10) days before the anticipated filing date, which notice shall describe the amount and type of securities to be included in such offering, the intended method(s) of distribution, and the name of the proposed managing Underwriter or
Underwriters, if any, of the offering, and (y) offer to the holders of Registrable Securities in such notice the opportunity to register the sale of such number of shares of Registrable Securities as such holders may request in writing within
five (5) days following receipt of such notice (a “Piggyback Registration”). The Company shall, in good faith, cause such Registrable Securities to be included in such Registration and shall use its best efforts to cause
the managing Underwriter(s) of a proposed Underwritten Offering to permit the Registrable Securities requested to be included in such Registration on the same terms and conditions as any similar securities of the Company and to permit the sale or
other disposition of such Registrable Securities in accordance with the intended method(s) of distribution thereof. All holders of Registrable Securities proposing to distribute their securities through a Piggy-Back Registration that involves an
Underwriter(s) shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Piggyback Registration. 

2.2.2. Reduction of Piggyback Registration. If the managing Underwriter(s) for a Piggyback Registration that is to be an
Underwritten Offering, in good faith, advises the Company and the Holders of Registrable Securities participating in the Piggyback Registration in writing that the dollar amount or number of securities which the Company desires to sell, taken
together with (i) the Common Stock or other equity securities, if any, as to which Registration has been demanded pursuant to separate written contractual arrangements with persons or entities other than the Holders of Registrable Securities
hereunder, (ii) the Registrable Securities as to which Registration has been requested under this Section 2.2, and (iii) the Common Stock or other equity securities, if any, as to which Registration has been
requested pursuant to separate written contractual piggyback registration rights of other stockholders of the Company, exceeds the Maximum Number of Securities, then: 

a) If the Registration is undertaken for the Company’s account, the Company shall include in any such Registration (A) first, the
Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the
foregoing clause (A), the Registrable Securities of Holders exercising their rights to register their Registrable Securities pursuant to Section 2.2.1 hereof, Pro Rata, which can be sold without exceeding the Maximum Number of
Securities; and (C) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A) and (B), the Common Stock, if any, as to which Registration has been requested pursuant to written
contractual piggyback registration rights of other stockholders of the Company, which can be sold without exceeding the Maximum Number of Securities; and 

  
 6 

 b) If the Registration is pursuant to a request by persons or entities other than the
Holders of Registrable Securities, then the Company shall include in any such Registration (A) first, the Common Stock or other equity securities, if any, of such requesting persons or entities, other than the Holders of Registrable Securities,
which can be sold without exceeding the Maximum Number of Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A), the Registrable Securities of Holders exercising their
rights to register their Registrable Securities pursuant to Section 2.2.1, Pro Rata based on the number of Registrable Securities that each Holder has requested be included in such Underwritten Registration and the
aggregate number of Registrable Securities that the Holders have requested to be included in such Underwritten Registration, which can be sold without exceeding the Maximum Number of Securities; (C) third, to the extent that the Maximum Number
of Securities has not been reached under the foregoing clauses (A) and (B), the Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities; and (D) fourth,
to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A), (B) and (C), the Common Stock or other equity securities for the account of other persons or entities that the Company is obligated to
register pursuant to separate written contractual arrangements with such persons or entities, which can be sold without exceeding the Maximum Number of Securities. 

2.2.3. Piggyback Registration Withdrawal. Any Holder of Registrable Securities shall have the right to withdraw from a Piggyback
Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter(s) of his, her or its intention to withdraw from such Piggyback Registration prior to the effectiveness of the Registration Statement filed
with the Commission with respect to such Piggyback Registration. The Company (whether on its own good faith determination or as the result of a request for withdrawal by persons pursuant to separate written contractual obligations) may withdraw a
Registration Statement filed with the Commission in connection with a Piggyback Registration at any time prior to the effectiveness of such Registration Statement. Notwithstanding anything to the contrary in this Agreement, the Company shall be
responsible for the Registration Expenses incurred in connection with the Piggyback Registration prior to its withdrawal under this Section 2.2.3. 

2.2.4. Unlimited Piggyback Registration Rights. For purposes of clarity, any Registration effected pursuant to
Section 2.2 hereof shall not be counted as a Registration pursuant to a Demand Registration effected under Section 2.1 hereof.

2.3 Registrations on Form S-3. The Holders of Registrable Securities may at any time, and
from time to time, request in writing that the Company, pursuant to Rule 415 under the Securities Act (or any successor rule promulgated thereafter by the Commission), register the resale of any or all of their Registrable Securities on Form S-3 or any similar short-form registration statement that may be available at such time (“Form S-3”); provided, that the Company shall
not be obligated to effect such request through an Underwritten Offering. Within five (5) days of the Company’s receipt of a written request from a Holder or Holders of Registrable Securities for a Registration on Form S-3, the Company shall promptly give written notice of the proposed Registration on Form S-3 to all other Holders of Registrable Securities, and each Holder of Registrable
Securities who thereafter wishes to include all or a portion of such Holder’s Registrable Securities in such Registration on Form S-3 shall so notify the Company, in writing, within ten (10) days
after the receipt by the Holder of the notice from the Company. As soon as practicable thereafter, but not more than twelve (12) days after the Company’s initial receipt of such written request for a Registration on Form S-3, the Company shall register all or such portion of such Holder’s Registrable Securities as are specified in such written request, together with all or such portion of Registrable Securities of any other
Holder or Holders joining in such request as are specified in the written notification given by such Holder or Holders; provided, that the Company shall not be obligated to effect any such Registration pursuant to Section
2.3 hereof if (i) a Form S-3 is not available for such offering; or (ii) the Holders of Registrable Securities, together with the Holders of any other equity securities of the Company
entitled to inclusion in such Registration, propose to sell the Registrable Securities and such other equity securities (if any) at any aggregate price to the public of less than $5,000,000. Registrations effected pursuant to this
Section 2.3 shall not be counted as Demand Registrations effected pursuant to Section 2.1; provided such registration shall count for purposes of Section 3.5 if
initiated by the Representatives. 

  
 7 

 2.4 Restrictions on Registration Rights. If (A) during the period starting
with the date sixty (60) days prior to the Company’s good faith estimate of the date of the filing of, and ending on a date one hundred and twenty (120) days after the effective date of, a Company initiated Registration and
provided that the Company has delivered written notice to the Holders prior to receipt of a Demand Registration pursuant to Section 2.1.1 and it continues to actively employ, in good faith, all reasonable efforts to cause the
applicable Registration Statement to become effective; (B) the Holders have requested an Underwritten Registration and the Company and the Holders are unable to obtain the commitment of underwriters to firmly underwrite the offer; or
(C) in the good faith judgment of the Board such Registration would be seriously detrimental to the Company and the Board concludes as a result that it is essential to defer the filing of such Registration Statement at such time, then in each
case the Company shall furnish to such Holders a certificate signed by the Chairman of the Board stating that in the good faith judgment of the Board it would be seriously detrimental to the Company for such Registration Statement to be filed in the
near future and that it is therefore essential to defer the filing of such Registration Statement. In such event, the Company shall have the right to defer such filing for a period of not more than thirty (30) days; provided, that
the Company may not defer its obligation in this manner more than once in any 12-month period. 

3. REGISTRATION PROCEDURES. 

3.1 Filings; Information. Whenever the Company is required to effect the registration of any Registrable Securities pursuant to
Section 2, the Company shall use its best efforts to effect the Registration to permit the sale of such Registrable Securities in accordance with the intended plan of distribution thereof as expeditiously as practicable,
and in connection with any such request: 
 3.1.1 prepare and file with the Commission as soon as practicable a Registration Statement with
respect to such Registrable Securities and use its reasonable best efforts to cause such Registration Statement to become effective and remain effective until all Registrable Securities covered by such Registration Statement have been sold; 

3.1.2 prepare and file with the Commission such amendments and post-effective amendments to the Registration Statement, and such supplements to
the Prospectus, as may be requested by the Holders or any Underwriter of Registrable Securities or as may be required by the rules, regulations or instructions applicable to the registration form used by the Company or by the Securities Act or rules
and regulations thereunder to keep the Registration Statement effective until all Registrable Securities covered by such Registration Statement are sold in accordance with the intended plan of distribution set forth in such Registration Statement or
supplement to the Prospectus; 
 3.1.3 prior to filing a Registration Statement or prospectus, or any amendment or supplement thereto,
furnish without charge to the Underwriters, if any, and the Holders of Registrable Securities included in such Registration, and such Holders’ legal counsel, copies of such Registration Statement as proposed to be filed, each amendment and
supplement to such Registration Statement (in each case including all exhibits thereto and documents incorporated by reference therein), the Prospectus included in such Registration Statement (including each preliminary Prospectus), and such other
documents as the Underwriters and the Holders of Registrable Securities included in such Registration or the legal counsel for any such Holders may request in order to facilitate the disposition of the Registrable Securities owned by such Holders;

 3.1.4 prior to any public offering of Registrable Securities, use its best efforts to (i) register or qualify the Registrable
Securities covered by the Registration Statement under such securities or “blue sky” laws of such jurisdictions in the United States as the Holders of Registrable Securities included in such Registration Statement (in light of their
intended plan of distribution) may request, and (ii) take such action necessary to cause such Registrable Securities covered by the Registration Statement to be registered with or approved by such other governmental authorities as may be
necessary by virtue of the business and operations of the Company and do any and all other acts and things that may be necessary or advisable to enable the Holders of Registrable Securities included in such Registration Statement to consummate the
disposition of such Registrable Securities in such jurisdictions; provided, that the Company shall not be required to qualify generally to do business in any jurisdiction where it would not otherwise be required to qualify or take
any action to which it would be subject to general service of process or taxation in any such jurisdiction where it is not then otherwise so subject; 

  
 8 

 3.1.5 cause all such Registrable Securities to be listed on each securities exchange or
automated quotation system on which similar securities issued by the Company are then listed; 
 3.1.6 provide a transfer agent or warrant
agent, as applicable, and registrar for all such Registrable Securities no later than the effective date of such Registration Statement; 

3.1.7 advise each seller of such Registrable Securities, promptly after it shall receive notice or obtain knowledge thereof, of the issuance of
any stop order by the Commission suspending the effectiveness of such Registration Statement or the initiation or threatening of any proceeding for such purpose and promptly use its reasonable best efforts to prevent the issuance of any stop order
or to obtain its withdrawal if such stop order should be issued; 
 3.1.8 at least five (5) days prior to the filing of any Registration
Statement or Prospectus or any amendment or supplement to such Registration Statement or Prospectus or any document that is to be incorporated by reference into such Registration Statement or Prospectus, furnish a copy thereof to each seller of such
Registrable Securities or its counsel; 
 3.1.9 notify the Holders at any time when a Prospectus relating to such Registration Statement is
required to be delivered under the Securities Act, of the happening of any event as a result of which the Prospectus included in such Registration Statement, as then in effect, includes a Misstatement, and then to correct such Misstatement as set
forth in Section 3.4 hereof; 
 3.1.10 permit a representative of the Holders (such representative to be selected by a
majority of the participating Holders), the Underwriters, if any, and any attorney or accountant retained by such Holders or Underwriter to participate, at each such person’s own expense, in the preparation of the Registration Statement, and
cause the Company’s officers, directors and employees to supply all information reasonably requested by any such representative, Underwriter, attorney or accountant in connection with the Registration; provided, that such
representatives or Underwriters enter into a confidentiality agreement, in form and substance reasonably satisfactory to the Company, prior to the release or disclosure of any such information; 

3.1.11 obtain a “comfort” letter from the Company’s independent registered public accountants in the event of an Underwritten
Registration, in customary form and covering such matters of the type customarily covered by “comfort” letters as the managing Underwriter may reasonably request, and may be found reasonably satisfactory to a
majority-in-interest of the participating Holders; 
 3.1.12
on the date the Registrable Securities are delivered for sale pursuant to such Registration, obtain an opinion, dated such date, of counsel representing the Company for the purposes of such Registration, addressed to the Holders, the placement agent
or sales agent, if any, and the Underwriters, if any, covering such legal matters with respect to the Registration in respect of which such opinion is being given as the Holders, placement agent, sales agent, or Underwriter may reasonably request
and as are customarily included in such opinions and negative assurance letters, and may be found reasonably satisfactory to a majority in interest of the participating Holders; 

3.1.13 in the event of any Underwritten Offering, enter into and perform its obligations under an underwriting agreement, in usual and
customary form, with the managing Underwriters of such offering; 
 3.1.14 make available to its security holders, as soon as reasonably
practicable, an earnings statement covering the period of at least twelve (12) months beginning with the first day of the Company’s first full calendar quarter after the effective date of the Registration Statement which satisfies the
provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any successor rule promulgated thereafter by the Commission); 

3.1.15 if the Registration involves the Registration of Registrable Securities involving gross proceeds in excess of $25,000,000, use its
reasonable efforts to make available senior executives of the Company to participate in customary “road show” presentations that may be reasonably requested by the Underwriter in any Underwritten Offering; and 

  
 9 

 3.1.16 otherwise, in good faith, cooperate reasonably with, and take such customary actions
as may reasonably be requested by the Holders, in connection with such Registration. 
 3.2 Registration Expenses. The
Registration Expenses of all Registrations shall be borne by the Company. It is acknowledged by the Holders that the Holders shall bear all incremental selling expenses relating to the sale of Registrable Securities, such as Underwriters’
commissions and discounts, brokerage fees, Underwriter marketing costs and, other than as set forth in the definition of “Registration Expenses”, all reasonable fees and expenses of any legal counsel representing the Holders. 

3.3 Requirements for Participation in Underwritten Offerings. No person may participate in any Underwritten Offering for equity
securities of the Company pursuant to a Registration initiated by the Company hereunder unless such person (i) agrees to sell such person’s securities on the basis provided in any underwriting arrangements approved by the Company, and
(ii) completes and executes all customary questionnaires, powers of attorney, indemnities, lock-up agreements, underwriting agreements and other customary documents as may be reasonably required under the
terms of such underwriting arrangements. 
 3.4 Suspension of Sales; Adverse Disclosure. Upon receipt of written notice from the
Company that a Registration Statement or Prospectus contains a Misstatement, each of the Holders shall forthwith discontinue disposition of Registrable Securities until it has received copies of a supplemented or amended Prospectus correcting the
Misstatement (it being understood that the Company hereby covenants to prepare and file such supplemented or amended Prospectus as soon as practicable after the time of such notice), or until it is advised in writing by the Company that the use of
the Prospectus may be resumed. If the filing, initial effectiveness or continued use of a Registration Statement in respect of any Registration at any time would require the Company to make an Adverse Disclosure or would require the inclusion in
such Registration Statement of financial statements that are unavailable to the Company for reasons beyond the Company’s control, the Company may, upon giving prompt written notice of such action to the Holders, delay the filing or initial
effectiveness of, or suspend use of, such Registration Statement for the shortest period of time, but in no event more than thirty (30) days, determined in good faith by the Company to be necessary for such purpose. In the event the Company
exercises its rights under the preceding sentence, the Holders agree to suspend, immediately upon their receipt of the notice referred to above, their use of the Prospectus relating to any Registration in connection with any sale or offer to sell
Registrable Securities. The Company shall immediately notify the Holders of the expiration of any period during which it exercised its rights under this Section 3.4, and upon the expiration of such period the Holders shall be entitled to
resume the use of any such Prospectus in connection with any sale or offer to sell Registrable Securities. 
 3.5 Reporting
Obligations. As long as any Holder shall own Registrable Securities, the Company, at all times while it shall be reporting under the Exchange Act, covenants to file timely (or obtain extensions in respect thereof and file within the applicable
grace period) all reports required to be filed by the Company after the date hereof pursuant to Sections 13(a) or 15(d) of the Exchange Act and to promptly furnish the Holders with true and complete copies of all such filings. The Company further
covenants that it shall take such further action as any Holder may reasonably request, all to the extent required from time to time to enable such Holder to sell Registrable Securities held by such Holder without registration under the Securities
Act within the limitation of the exemptions provided by Rule 144 promulgated under the Securities Act (or any successor rule promulgated thereafter by the Commission), including providing any legal opinions. Upon the request of any Holder, the
Company shall deliver to such Holder a written certification of a duly authorized officer as to whether it has complied with such requirements. 

3.6 Limitations on Registration Rights. Notwithstanding anything herein to the contrary, (i) none of the IPO Underwriters may
exercise its rights under Sections 2.1 and 2.2 hereunder after five (5) and seven (7) years, respectively, after the effective date of the registration statement relating to the Company’s initial public offering and
(ii) the Representatives may not exercise their rights under Section 2.1 more than once. 

  
 10 

 4. INDEMNIFICATION AND CONTRIBUTION. 

4.1 Indemnification by the Company. The Company agrees to indemnify, to the extent permitted by law, and hold harmless each Holder
of Registrable Securities, its officers and directors, and each person who controls such Holder (within the meaning of the Securities Act), from and against any expenses, losses, judgments, claims, damages or liabilities (including reasonable
attorney’s fees), whether joint or several, arising out of or based upon any untrue or alleged untrue statement of material fact contained in any Registration Statement, Prospectus or preliminary Prospectus, or any amendment or supplement to
any of them, or any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, except insofar as the same is contained in any information furnished in writing to the
Company by the Holder expressly for use therein. The Company also shall indemnify any Underwriter of the Registrable Securities, their officers and directors, and each person who controls such Underwriter (within the meaning of the Securities Act)
on substantially the same basis as that of the indemnification provided above in this Section 4.1. 
 4.2
Indemnification by Holders of Registrable Securities. In connection with any Registration Statement in which a Holder of Registrable Securities is participating, such Holder shall furnish to the Company in writing such information and
affidavits as the Company reasonably requests for use in connection with any such Registration Statement or Prospectus and, to the extent permitted by law, shall indemnify the Company, its directors and officers and agents and each person who
controls the Company (within the meaning of the Securities Act) against any losses, claims, damages, liabilities and expenses (including without limitation reasonable attorneys’ fees) resulting from any untrue statement of material fact
contained in the Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof or supplement thereto or any omission of a material fact required to be stated therein or necessary to make the statements therein not misleading,
but only to the extent that such untrue statement or omission is contained in any information or affidavit so furnished in writing by such Holder expressly for use therein; provided, that the obligation to indemnify shall be
several, not joint and several, among such Holders of Registrable Securities, and the liability of each such Holder of Registrable Securities shall be in proportion to and limited to the net proceeds received by such Holder from the sale of
Registrable Securities pursuant to such Registration Statement. Each Holder shall indemnify any Underwriter of Registrable Securities sold by such Holder, their officers, directors and each person who controls such Underwriters (within the meaning
of the Securities Act) to the same extent as provided in the foregoing with respect to indemnification of the Company. 
 4.3 Conduct of
Indemnification Proceedings. Any person entitled to indemnification herein shall (i) give prompt written notice to the indemnifying party of any claim with respect to which it seeks indemnification (provided that the failure to give prompt
notice shall not impair any person’s right to indemnification hereunder to the extent such failure has not materially prejudiced the indemnifying party), and (ii) unless in such indemnified party’s reasonable judgment a conflict of
interest between such indemnified and indemnifying parties may exist with respect to such claim, permit such indemnifying party to assume the defense of such claim with counsel reasonably satisfactory to the indemnified party. If such defense is
assumed, the indemnifying party shall not be subject to any liability for any settlement made by the indemnified party without its consent. An indemnifying party who is not entitled to, or elects not to, assume the defense of a claim shall not be
obligated to pay the fees and expenses of more than one counsel for all parties indemnified by such indemnifying party with respect to such claim, unless in the reasonable judgment of any indemnified party a conflict of interest may exist between
such indemnified party and any other of such indemnified parties with respect to such claim. No indemnifying party shall, without the consent of the indemnified party, consent to the entry of any judgment or enter into any settlement which cannot be
settled in all respects by the payment of money (and such money is so paid by the indemnifying party pursuant to the terms of such settlement) or which settlement does not include as an unconditional term thereof the giving by the claimant or
plaintiff to such indemnified party of a release from all liability in respect to such claim or litigation. 
 4.4 Contribution. If
the indemnification provided under Section 4.1 hereof from the indemnifying party is unavailable or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages, liabilities and expenses referred to
herein, then the indemnifying party, in lieu of indemnifying the indemnified party, shall contribute to the amount paid or payable by the indemnified party as a result of such losses, claims, damages, liabilities and expenses in such proportion as
is appropriate to reflect the relative fault of the indemnifying party and the indemnified party, as well as any other relevant equitable considerations. The relative fault of the indemnifying party and indemnified party shall be determined by
reference to, among other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact, was made by, or relates to information supplied by, such
indemnifying party or indemnified party, and the indemnifying party’s and indemnified party’s relative intent, knowledge, access to information and opportunity to correct or prevent such action; provided, that the liability of
any Holder under this Section 4.4 shall be limited to the amount of the net proceeds received by such Holder in such offering giving rise to such liability. The amount paid or payable by a party as a result of the losses or other
liabilities referred to above shall be deemed to include, subject to the limitations set forth in Sections 4.1-4.3 above, any legal or other fees, charges or expenses reasonably incurred by
such party in connection with any investigation or proceeding. The parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 4.4 were determined by pro rata allocation or by any other method of
allocation, which does not take account of the equitable considerations referred to in this Section 4.4. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled
to contribution pursuant to this Section 4.4 from any person who was not guilty of such fraudulent misrepresentation. 

  
 11 

 4.4 Survival. The indemnification provided for under this Agreement shall remain in
full force and effect regardless of any investigation made by or on behalf of the indemnified party or any officer, director or controlling person of such indemnified party and shall survive the transfer of securities. The Company and each Holder of
Registrable Securities participating in an offering also agrees to make such provisions as are reasonably requested by any indemnified party for contribution to such party in the event the Company’s or such Holder’s indemnification is
unavailable for any reason. 
 5. INTENTIONALLY OMITTED. 

6. MISCELLANEOUS. 

6.1 Assignment; No Third-Party Beneficiaries. 

6.1.1 This Agreement and the rights, duties and obligations of the Company hereunder may not be assigned or delegated by the Company in whole
or in part. 
 6.1.2 Prior to the expiration of the Lock-up Period, no Holder may assign or delegate
such Holder’s rights, duties or obligations under this Agreement, in whole or in part, except in connection with a transfer of Registrable Securities by such Holder to a Permitted Transferee, but only if such Permitted Transferee agrees to
become bound by the transfer restrictions set forth in this Agreement, the Insider Letters and other applicable letter agreements. 
 6.1.3
This Agreement and the provisions hereof shall be binding upon and shall inure to the benefit of each of the parties and its successors and the permitted assigns of the Holders, which shall include Permitted Transferees. 

6.1.4 This Agreement shall not confer any rights or benefits on any persons that are not parties hereto, other than as expressly set forth in
this Agreement. 
 6.1.5 No assignment by any party hereto of such party’s rights, duties and obligations hereunder shall be binding
upon or obligate the Company unless and until the Company shall have received (i) written notice of such assignment, and (ii) the written agreement of the assignee, in a form reasonably satisfactory to the Company, to be bound by the terms
and provisions of this Agreement (which may be accomplished by an addendum or certificate of joinder to this Agreement). 
 6.1.6 Any
transfer or assignment made other than as provided in this Section 6.1 shall be null and void. 
 6.2 Notices.
All notices, demands, requests, consents, approvals or other communications (collectively, “Notices”) required or permitted to be given hereunder or which are given with respect to this Agreement shall be in writing and shall
be personally served, delivered by reputable air courier service with charges prepaid, or transmitted by hand delivery, telegram, telex or facsimile, addressed as set forth below, or to such other address as such party shall have specified most
recently by written notice. Notice shall be deemed given on the date of service or transmission if personally served or transmitted by telegram, telex or facsimile; provided, that if such service or transmission is not on a business day or is after
normal business hours, then such notice shall be deemed given on the next business day. Notice otherwise sent as provided herein shall be deemed given on the next business day following timely delivery of such notice to a reputable air courier
service with an order for next-day delivery. 

  
 12 

 To the Company: 

GigCapital4, Inc. 
 1731
Embarcadero Rd., Suite 200 
 Palo Alto, CA 94303 

Attn: Dr. Raluca Dinu 
 With
a copy to: 
 DLA Piper LLP (US) 

555 Mission Street, Suite 2400 

San Francisco, CA 94105

Attn: Jeffrey C. Selman, Esq. 

Fax: (415) 659-7465 

And to Holder, to the address set forth below such Holder’s name on Exhibit A hereto. 

6.4 Severability. This Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof
shall not affect the validity or enforceability of this Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of
this Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible that is valid and enforceable. 

6.5 Counterparts; Electronic Signatures. This Agreement may be executed in counterparts, each of which when so executed
shall be deemed to be an original, and all of which when taken together shall constitute one and the same instrument. The words “execution,” signed,” “signature,” and words of like import in this Agreement or in any other
certificate, agreement or document related to this Agreement shall include images of manually executed signatures transmitted by facsimile or other electronic format (including, without limitation, “pdf”, “tif” or
“jpg”) and other electronic signatures (including, without limitation, DocuSign and AdobeSign). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent,
communicated, received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law,
including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic
Transactions Act or the Uniform Commercial Code. 
 6.6 Entire Agreement. This Agreement (including all agreements entered into
pursuant hereto and all certificates and instruments delivered pursuant hereto and thereto) constitute the entire agreement of the parties with respect to the subject matter hereof and supersede all prior and contemporaneous agreements,
representations, understandings, negotiations and discussions between the parties, whether oral or written. 
 6.7 Modifications and
Amendments. Upon the written consent of the Company and the Holders of at least a majority in interest of the Registrable Securities at the time in question, compliance with any of the provisions, covenants and conditions set forth in this
Agreement may be waived, or any of such provisions, covenants or conditions may be amended or modified; provided, that notwithstanding the foregoing, any amendment hereto or waiver hereof that adversely affects one Holder, solely in
its capacity as a holder of the shares of capital stock of the Company, in a manner that is materially different from the other Holders (in such capacity) shall require the consent of the Holder so affected. No course of dealing between any Holder
or the Company and any other party hereto or any failure or delay on the part of a Holder or the Company in exercising any rights or remedies under this Agreement shall operate as a waiver of any rights or remedies of any Holder or the Company. No
single or partial exercise of any rights or remedies under this Agreement by a party shall operate as a waiver or preclude the exercise of any other rights or remedies hereunder or thereunder by such party. 

6.8 Titles and Headings. Titles and headings of sections of this Agreement are for convenience only and shall not affect the
construction of any provision of this Agreement. 

  
 13 

 6.9 Waivers and Extensions. Any party to this Agreement may waive any right,
breach or default which such party has the right to waive, provided that such waiver will not be effective against the waiving party unless it is in writing, is signed by such party, and specifically refers to this Agreement. Waivers may be
made in advance or after the right waived has arisen or the breach or default waived has occurred. Any waiver may be conditional. No waiver of any breach of any agreement or provision herein contained shall be deemed a waiver of any preceding or
succeeding breach thereof nor of any other agreement or provision herein contained. No waiver or extension of time for performance of any obligations or acts shall be deemed a waiver or extension of the time for performance of any other obligations
or acts. 
 6.10 Remedies Cumulative. In the event that the Company fails to observe or perform any covenant or agreement to be
observed or performed under this Agreement, the Investors or any other holder of Registrable Securities may proceed to protect and enforce its rights by suit in equity or action at law, whether for specific performance of any term contained in this
Agreement or for an injunction against the breach of any such term or in aid of the exercise of any power granted in this Agreement or to enforce any other legal or equitable right, or to take any one or more of such actions, without being required
to post a bond. None of the rights, powers or remedies conferred under this Agreement shall be mutually exclusive, and each such right, power or remedy shall be cumulative and in addition to any other right, power or remedy, whether conferred by
this Agreement or now or hereafter available at law, in equity, by statute or otherwise. 
 6.11 Governing Law. This Agreement
shall be governed by, interpreted under, and construed in accordance with the internal laws of the State of New York applicable to agreements made and to be performed within the State of New York, without giving effect to any choice-of-law provisions thereof that would compel the application of the substantive laws of any other jurisdiction. 

6.12 Waiver of Trial by Jury. Each party hereby irrevocably and unconditionally waives the right to a trial by jury in any action,
suit, counterclaim or other proceeding (whether based on contract, tort or otherwise) arising out of, connected with or relating to this Agreement, the transactions contemplated hereby, or the actions of the Investors in the negotiation,
administration, performance or enforcement hereof. 
 6.13 Term. This Agreement shall terminate upon the earlier of (i) the tenth
anniversary of the date of this Agreement, or (ii) the date as of which (A) all of the Registrable Securities have been sold pursuant to a Registration Statement (but in no event prior to the applicable period referred to in
Section 4(a)(3) of the Securities Act and Rule 174 thereunder (or any successor rule promulgated thereafter by the Commission)), or (B) the Holders of all Registrable Securities are permitted to sell the Registrable Securities under Rule
144 (or any similar provision) under the Securities Act without limitation on the amount of securities sold or the manner of sale. The provisions of Section 3.5 and Article IV shall survive any
termination. 
 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
 14 

 IN WITNESS WHEREOF, the parties have caused this Registration Rights Agreement to be
executed and delivered by their duly authorized representatives as of the date first written above. 
  

	
	THE COMPANY:
	
	GIGCAPITAL4, INC.
	
	  

	By: Dr. Raluca Dinu, Chief Executive Officer,
	President and Secretary
	
	HOLDERS:
	
	GIGACQUISITIONS4, LLC
	
	  

	By: Dr. Avi S. Katz, Manager
	
	OPPENHEIMER & CO. INC.
	
	  

	By:
	
	NOMURA SECURITIES INTERNATIONAL, INC.
	
	  

	By:
	
	  

	Brad Weightman,
	Chief Financial Officer of GigCapital4, Inc.
	
	  

	Dorothy Hayes
	Director of GigCapital4, Inc.

  
 15

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