Document:

EX-10.2

 Exhibit 10.2 

[•], 2019 
 GigCapital2,
Inc. 
 2479 E. Bayshore Rd., Suite 200 
 Palo Alto, CA 94303

 EarlyBirdCapital, Inc. 
 366 Madison Avenue, 8th Floor 
 New York, New York 10017 

Re: Initial Public Offering 
 Ladies
and Gentlemen: 
 This letter agreement (this “Letter Agreement”) is being delivered to you in accordance with the
Underwriting Agreement (the “Underwriting Agreement”) entered into by and between GigCapital2, Inc., a Delaware corporation (the “Company”), and EarlyBirdCapital, Inc.
(“EarlyBird”), as representative (the “Representative”) of the several Underwriters named therein (the “Underwriters”), relating to an underwritten initial public offering (the
“IPO”) of the Company’s units (the “Units”), each consisting of one share of the Company’s common stock, par value $0.0001 per share (“Common Stock” and such shares
included in the Units, “Offering Shares”), and one warrant to purchase one share of Common Stock at a price of $11.50 per share, subject to adjustment (the warrants included in the Units sold, the “Offering
Warrants”). Capitalized terms used herein but not defined in context are defined in paragraph 12 hereof. 
 In order to
induce the Company and the Underwriters to enter into the Underwriting Agreement and to proceed with the IPO, and in recognition of the benefit that such IPO will confer upon the undersigned, and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, each of the undersigned individuals, being an executive officer or director of the Company and signing this Letter Agreement in his or her personal capacity and not on behalf of the Company,
hereby agrees with the Company as follows: 
 1. With respect to stockholder votes and associated conversion rights, 

(a) if the Company solicits stockholder approval of a Business Combination via a proxy solicitation, then the undersigned will vote all shares
of then outstanding Common Stock beneficially owned by him in favor of such Business Combination; provided, that (i) the undersigned acknowledges and agrees that prior to entering into a Business Combination with a target business
that is affiliated with any Insiders, such transaction must be approved by a majority of the Company’s disinterested independent directors and the Company must obtain an opinion from an independent investment banking firm, or another
independent entity that commonly renders valuation opinions on the type of target business the Company is seeking to acquire, that such Business Combination is fair to the Company’s unaffiliated stockholders from a financial point of view, and
(ii) no Insider will be entitled to receive or accept a finder’s fee or any other compensation in the event such Insider originates a Business Combination; 

(b) the undersigned hereby agrees not to propose for a stockholder approval any amendment to the Amended and Restated Certificate of
Incorporation that would (i) affect the substance or timing of the Company’s obligation to redeem 100% of the Offering Shares if the Company does not complete a Business Combination within 21 months of the closing of the IPO , or
(ii) alter its provisions relating to the Company’s pre-Business Combination activity or the related stockholders’ rights, unless the Company provides the holders of any Offering Shares
with the opportunity to redeem their Offering Shares upon the approval of any such amendment. Such redemption must be at a per-share price, payable in cash, equal to the aggregate amount then on
deposit in the Trust Account including interest (net of taxes payable), divided by the number of then outstanding Offering Shares; and 
 (c)
the undersigned will not redeem any shares of Common Stock beneficially owned by him in connection with a solicitation for stockholder approval described in either of clauses (a) or (b) above, or sell any such shares of Common Stock in a
tender offer undertaken by the Company in connection with a Business Combination. 

 2. If the Company fails to consummate a Business Combination within 21 months of the
completion of the IPO, or such other time period as may be set forth in the Amended and Restated Certificate of Incorporation, the undersigned will cause the Company to (i) as promptly as possible, cease all operations except for the purpose of
winding up, (ii) as promptly as reasonably possible, but not more than 10 business days thereafter, redeem the Offering Shares at a per-share price, payable in cash, equal to the aggregate
amount then on deposit in the Trust Account, including interest earned on the Trust Account (net of taxes payable and up to $100,000 for dissolution expenses), divided by the number of then outstanding Offering Shares, which redemption will
completely extinguish the holders’ rights as stockholders (including the right to receive further liquidation distributions, if any), and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the
Company’s remaining stockholders and the Company’s board of directors, dissolve and liquidate, subject in the cases of clauses (ii) and (iii) to the Company’s obligations under Delaware law to provide for claims of creditors
and other requirements of applicable law. 
 3. The undersigned hereby waives any and all right, title, interest or claim of any kind the
undersigned may have in the future in or to any distribution of the Trust Account and any remaining assets of the Company as a result of, or arising out of, any contracts or agreements with the Company and will not seek recourse against the Trust
Account for any reason whatsoever; provided, that the foregoing waiver shall not apply with respect to liquidating distributions from the Trust Account made in connection with any Offering Shares purchased by the undersigned or its
Affiliates during the IPO or on the open market after the completion of the IPO if the Company fails to complete a Business Combination within 21 months of the completion of the IPO. The undersigned acknowledges and agrees that there will be no
distribution from the Trust Account with respect to any of the Offering Warrants, all rights of which will terminate upon the Company’s liquidation. 

4. In order to minimize potential conflicts of interest that may arise from multiple corporate affiliations, 

(a) the undersigned shall present to the Company for its consideration, prior to presentation to any other entity, any target business that has
a fair market value of at least 80% of the assets held in the Trust Account (excluding taxes payable on interest earned), subject to any pre-existing fiduciary or contractual obligations the
undersigned might have; and 
 (b) the undersigned hereby acknowledges and agrees that (i) each of the Underwriters and the Company may
be irreparably injured in the event of a breach of any of the obligations contained in this Letter Agreement, (ii) monetary damages may not be an adequate remedy for such breach, and (iii) the
non-breaching party shall be entitled to injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of such breach. 

5. Neither the undersigned nor any of their Affiliates will be entitled to receive, and none of them may accept, any compensation or other cash
payment prior to, or for services rendered in order to effectuate, the consummation of the Business Combination, except for the following: 

(a) GigAcquisitions2, LLC, a Delaware limited liability company (“Sponsor”), an Affiliate of Dr. Katz, and its
Affiliates may receive compensation for administrative services and office space, as provided for under that certain Administrative Services Agreement between the Company and GigFounders, LLC dated as of March 20, 2019; 

(b) Sponsor may receive amounts due, if any, under that certain promissory note in the aggregate principal amount of $99,937, dated
March 12, 2019, issued by the Company in favor of Sponsor; 
 (c) Ms. McDonough may receive compensation for her services as Vice
President and Chief Financial Officer of the Company, as provided for under that certain Strategic Services Agreement with the Company dated as of March 20, 2019; 

(d) Ms. McDonough may receive an aggregate of 5,000 shares of Common Stock in connection with her services as Vice President and Chief
Financial Officer; and 

 (e) any of the undersigned may receive reimbursement of out-of-pocket expenses incurred by them in connection with certain activities on behalf of the Company, such as identifying and investigating possible business targets and business combinations,
as well as advisory fees to directors pertaining to board committee service and extraordinary administrative and analytical services, and repayment upon consummation of a Business Combination of any loans which may be made by them or by their
Affiliates to finance transaction costs in connection with an intended Business Combination. While the terms of any such loans have not been determined nor have any written agreements been executed with respect thereto, it is acknowledged and agreed
that up to $1,500,000 of any such loans may be convertible into units of the post-business combination entity at a price of $10.00 per unit at the option of the lender. 

6. The undersigned agrees to continue to serve in his or her current capacity as an executive officer and/or director of the Company until the
earlier of the consummation by the Company of a Business Combination or its liquidation. The biographical information of the undersigned previously furnished to the Company and the Representative is true and accurate in all respects, does not omit
any material information with respect to the undersigned’s background and contains all of the information required to be disclosed pursuant to Item 401 of Regulation S-K, promulgated under the
Securities Act. The undersigned’s FINRA Questionnaire previously furnished to the Company and the Representative is also true and accurate in all respects. 

7. The undersigned represents and warrants that (i) he or she is not subject to, or a respondent in, any legal action for any injunction, cease-and-desist order, or order or stipulation to desist or refrain from any act or practice relating to the offering of securities in any jurisdiction;
(ii) he or she has never been convicted of or pleaded guilty to any crime involving any fraud, relating to any financial transaction or handling of funds of another person, or pertaining to any dealings in any securities and he or she is not
currently a defendant in any such criminal proceeding; and (iii) he or she has never been suspended or expelled from membership in any securities or commodities exchange or association, or had a securities or commodities license or registration
denied, suspended or revoked. 
 8. The undersigned agrees that he or she shall not Transfer (as defined below) any securities
(“Securities”) of the Company held by him or by his or her Affiliates, other than any Units, or the Offering Shares or Offering Warrants underlying such Units, purchased in the IPO or in the open market after the IPO, until
the earlier of (i) twelve months after the completion of a Business Combination or (ii) the date on which, subsequent to a Business Combination, (x) 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 a Business
Combination, or (y) 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 (the “Lock-up Period”). Notwithstanding the foregoing, during the Lock-up Period,
Transfers of Securities are permitted to be made (a) to any persons (including their Affiliates and members) participating in the private placement of the private units (as described in the Registration Statement); (b) among the Insiders or to
the Company’s executive officers, directors or employees; (c) in the case of an entity, as a distribution to its partners, stockholders or members upon its liquidation; (d) in the case of an individual, by a bona fide gift to a member
of one of the members of the individual’s immediate family or to a trust, the beneficiary of which is a member of one of the individual’s immediate family; (e) in the case of an individual, by virtue of laws of descent and
distribution upon death of the individual; (f) in the case of an individual, pursuant to a qualified domestic relations order; (g) by pledges to secure obligations incurred in connection with purchases of the Company’s securities;
(h) by private sales or transfers made in connection with the consummation of a Business Combination at prices no greater than the price at which the securities were originally purchased; or (i) to the Company for no value for cancellation
in connection with the consummation of a Business Combination; provided, however, that in any case (other than clause (i)), these permitted transferees must enter into a written agreement agreeing to be bound by
these transfer restrictions and the other terms described in this Letter Agreement to the extent and for the duration that such terms remain in effect at the time of the Transfer. 

9. Notwithstanding the foregoing paragraph 8, each of the undersigned agrees that during the period commencing on the effective date of the
Underwriting Agreement and ending 180 days after such date, none of them nor any of their Affiliates, may Transfer any Securities beneficially owned by them, other than any Units, or the Offering Shares or Offering Warrants underlying such Units,
purchased in the IPO or in the open market after the IPO. The foregoing sentence shall not apply to the registration of the offer and sale of Units contemplated by the Underwriting Agreement and the sale of the Units to the Underwriters. 

 10. The undersigned has full right and power, without violating any agreement by which he or
she is bound, to enter into this Letter Agreement and to serve as an executive officer and/or director of the Company. 
 11. This Letter
Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive laws of another
jurisdiction. The undersigned hereby (i) agrees that any action, proceeding or claim against him arising out of or relating in any way to this Letter Agreement (a “Proceeding”) shall be brought and enforced in the courts
of the State of New York of the United States of America for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction shall be exclusive, (ii) waives any objection to such exclusive jurisdiction and
that such courts represent an inconvenient forum, and (iii) irrevocably agrees to appoint Crowell & Moring LLP as agent for the service of process in the State of New York to receive, for the undersigned and on his or her behalf,
service of process in any Proceeding. If for any reason such agent is unable to act as such, the undersigned will promptly notify the Company and the Representative and appoint a substitute agent acceptable to each of the Company and the
Representative within 30 days and nothing in this Letter Agreement will affect the right of either party to serve process in any other manner permitted by law. 

12. As used herein, (i) “Affiliate” has the meaning set forth in Rule 144(a)(1) under the Securities Act; (ii)
“Amended and Restated Certificate of Incorporation” refers to the Amended and Restated Certificate of Incorporation of the Company, as filed with the Secretary of State of the State of Delaware, as the same may be amended
from time to time; (iii) a “Business Combination” shall mean a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses
or entities; (iv) “Exchange Act” means the Securities Exchange Act of 1934, as amended; (v) “Insiders” means all executive officers and directors of the Company immediately prior to the IPO, as well as
GigAcquisitions2, LLC, a Delaware limited liability company, EarlyBird, certain affiliates and employees of EarlyBird (together with EarlyBird, the “EarlyBird Group”), and Northland Gig2 Investment LLC (“Northland
Investment”) and any of their Affiliates; (vi) the “Registration Statement” shall mean the Registration Statement on Form S-1 filed by the Company with the
Securities and Exchange Commission in connection with the IPO, as the same may be amended or supplemented; (vii) “Securities Act” means the Securities Act of 1933, as amended; (viii) the “SEC”
means the United States Securities and Exchange Commission; (ix) “Transfer” means (a) the sale of, offer to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase or otherwise dispose
of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Exchange Act and
the rules and regulations promulgated thereunder with respect to any security, (b) the entry into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any security,
whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) the public announcement of any intention to effect any transaction specified in clause (a) or (b); and (x) “Trust
Account” means the trust account into which a portion of the net proceeds of the Company’s IPO will be deposited. 
 13.
This Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof and supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or
oral, to the extent they relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may not be changed, amended, modified or waived (other than to correct a typographical error) as to any particular
provision, except by a written instrument executed by all parties hereto. 
 14. The undersigned acknowledges and understands that the
Underwriters and the Company will rely upon the agreements, representations and warranties set forth herein in proceeding with the IPO. Nothing contained herein shall be deemed to render the Underwriters a representative of, or a fiduciary with
respect to, the Company, its stockholders or any creditor or vendor of the Company with respect to the subject matter hereof. 
 15. This
Letter Agreement shall be binding on the undersigned and such person’s respective successors, heirs, personal representatives and assigns. This Letter Agreement shall terminate on the earlier of (i) the Company’s consummation of a
Business Combination, or (ii) the liquidation of the Company; provided, that such termination shall not relieve the undersigned from liability for any breach of this agreement prior to its termination. 

 16. This Letter Agreement may be executed in one or more counterparts, all of which when
taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to each other party, it being understood that the parties need not sign the same counterpart. In
the event that any signature is delivered by facsimile transmission or any other form of electronic delivery, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the
same force and effect as if such signature page were an original thereof. 
 [Signature Page Follows] 

 
	
	Very truly yours,
	
	  

	 Dr. Avi S. Katz, Chairman of the Board,

President, Chief Executive Officer, and
 Secretary of GigCapital2,
Inc.

	
	  

	Tara McDonough, Vice President and
	Chief Financial Officer of GigCapital2, Inc.
	
	  

	John Mikulsky, Director of GigCapital2, Inc.
	
	  

	Neil Miotto, Director of GigCapital2, Inc.
	
	  

	Gil Frostig, Director of GigCapital2, Inc.
	
	  

	Raluca Dinu, Director of GigCapital2, Inc.

  

	
	Accepted and agreed this [•] day of [•], 2019.
	
	GIGCAPITAL2, INC.
	
	  
 Dr. Avi S. Katz, Chairman
of the Board
 and Chief Executive Officer

	
	EARLYBIRDCAPITAL, INC.
	
	  

Steven Levine

Chief Executive Officer

 Signature page to Insider Letter (Executive Officers and Directors)EX-10.9

 Exhibit 10.9 

UNIT PURCHASE AGREEMENT 
 THIS UNIT
PURCHASE AGREEMENT, dated as of [•] 2019 (as it may from time to time be amended and including all exhibits referenced herein, this “Agreement”), is entered into by and between GigCapital2, Inc., a Delaware corporation (the
“Company”), and GigAcquisitions2, LLC, a Delaware limited liability company (the “Purchaser”). 
 WHEREAS, the Company
intends to consummate an underwritten initial public offering (the “Public Offering”) of 13,000,000 units (“Public Units”), with each such unit consisting of one share of common stock, par value $0.0001 per share
(“Common Stock”) of the Company, and one warrant to purchase one share of Common Stock at an exercise price of $11.50 per share; 

WHEREAS, the underwriters engaged for the Public Offering have the option to purchase up to an additional 1,950,000 Public Units within 45-days of the closing of the Public Offering, solely to cover over-allotments (the “Over-Allotment Option”); 

WHEREAS, the Purchaser wishes to purchase 384,500 units, or up to 443,750 units if the Over-Allotment Option is exercised in full (the “Private
Units”), in a private placement, as provided herein; 
 NOW THEREFORE, in consideration of the mutual promises contained in this Agreement and
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties to this Agreement hereby, intending legally to be bound, agree as follows: 

AGREEMENT 

Section 1. Authorization, Purchase and Sale; Terms of the Private Units. 

A. Authorization of the Private Units. The Company has duly authorized the issuance and sale of the Private Units to the Purchaser, and
the issuance and sale of the securities underlying the Private Units, including the shares of Common Stock included in the Private Units and the warrants included in the Private Units (the “Private Warrants”), as well as, upon
proper exercise of the Private Warrants and against payment therefor, the shares of Common Stock underlying the Private Warrants, (the aforenamed securities, collectively, the “Securities”). 

B. Purchase and Sale of the Private Units. 

(i) As payment in full for an initial tranche of 384,500 units (the “Initial Private Units”) being purchased under this
Agreement, Purchaser shall pay $3,845,000 (the “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, at least one (1) business day prior to the date of
effectiveness of the Registration Statement on Form S-1 to be filed in connection with the Public Offering (the “Registration Statement”). 

(ii) In the event that the Over-Allotment Option is exercised in full or in part, Purchaser shall purchase up to an additional 59,250 units
(the “Additional Private Units”), in the same proportion as the amount of the Over-Allotment Option that is exercised, and simultaneously with such purchase of Additional Private Units, as payment in full for the Additional Private
Units being purchased hereunder, and at least one (1) business day prior to the closing of all or any portion of the Over-Allotment Option, Purchaser shall pay $10.00 per Additional Private Unit, up to an aggregate amount of $592,500 by wire
transfer of immediately available funds or by such other method as may be reasonably acceptable to the Company, to the Trust Account. 

  
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 (iii) The closing of the purchase and sale of the Initial Private Units shall take place
simultaneously with the closing of the Public Offering (the “Initial Closing Date”). The closing of the purchase and sale of the Additional Private Units, if applicable, shall take place simultaneously with the closing of all or any
portion of the Over-Allotment Option (such closing date, together with the Initial Closing Date, the “Closing Dates” and each, a “Closing Date”). The closings of the purchase and sale of the Initial Private Units
and the Additional Private Units shall take place at the offices of Crowell & Moring LLP, 3 Embarcadero Center, San Francisco, CA 94111, or such other place as may be agreed upon by the parties hereto. 

C. Description of the Private Units. 

(i) Each Private Unit shall include one share of Common Stock and one Private Warrant. Each Private Warrant shall entitle the holder to
purchase one share of Common Stock at a purchase price of $11.50 per share; 
 (ii) The Private Warrants shall have their terms set forth in
a warrant agreement (the “Warrant Agreement”) to be entered into by the Company and Continental Stock Transfer & Trust Company, acting as warrant agent, in connection with the Public Offering; 

(iii) At or prior to the time of the Initial Closing Date, the Company and the Purchaser shall enter into a registration rights agreement (the
“Registration Rights Agreement”) pursuant to which the Company shall grant certain registration rights to the Purchaser relating to the shares of Common Stock included in the Private Units and the shares of Common Stock underlying
the Private Warrants. 
 Section 2. Representations and Warranties of the Company. As a material inducement
to the Purchaser to enter into this Agreement and purchase the Private Units, including the underlying Securities, the Company hereby represents and warrants to the Purchaser that: 

A. Organization and Corporate Power. The Company is a corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on the financial condition, operating results or assets of the
Company. The Company possesses all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement and the Warrant Agreement. 

B. Authorization; No Breach. 

(i) The execution, delivery and performance of this Agreement and the transactions contemplated hereby has been duly authorized by the Company
as of the Closing Dates. This Agreement constitutes the valid and binding obligation of the Company, enforceable in accordance with its terms. Upon issuance in accordance with, and payment pursuant to, the terms of the Warrant Agreement and this
Agreement, the Private Warrants will constitute valid and binding obligations of the Company, enforceable in accordance with their terms as of the Closing Dates. 

(ii) The execution and delivery by the Company of this Agreement, and the fulfillment of, and compliance with, the respective terms hereof by
the Company, do not and will not as of the Closing Dates (a) conflict with or result in a breach of the terms, conditions or provisions of, (b) constitute a default under, (c) result in the creation of any lien, security interest,
charge or encumbrance upon the Company’s 

  
 2 

 
capital stock or assets under, (d) result in a violation of, or (e) require any authorization, consent, approval, exemption or other action by or notice or declaration to, or filing
with, any court or administrative or governmental body or agency pursuant to the certificate of incorporation or the bylaws of the Company (each, as in effect on the date hereof or as may be amended prior to completion of the Public Offering), or
any material law, statute, rule or regulation to which the Company is subject, or any agreement, order, judgment or decree to which the Company is subject, except for any filings required after the date hereof under United States federal or state
securities laws. 
 C. Title to Securities. Upon issuance in accordance with, and payment pursuant to, the terms hereof and, as
applicable, the terms of the Warrant Agreement, the Private Units, including the underlying Securities, will be duly and validly issued, fully paid and non-assessable. Upon issuance in accordance with, and
payment pursuant to, the terms hereof, and, as applicable, the terms of the Warrant Agreement, the Purchaser will have good title to the Private Units, including the underlying Securities, free and clear of all liens, claims and encumbrances of any
kind, other than (i) transfer restrictions hereunder and under the other agreements contemplated hereby, (ii) transfer restrictions under federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the
actions of the Purchaser. 
 D. Governmental Consents. No permit, consent, approval or authorization of, or declaration to or
filing with, any governmental authority is required in connection with the execution, delivery and performance by the Company of this Agreement or the consummation by the Company of any other transactions contemplated hereby. 

Section 3. Representations and Warranties of the Purchaser. As a material inducement to the Company to enter
into this Agreement and issue and sell the Private Units, including the underlying Securities, to the Purchaser, the Purchaser hereby represents and warrants to the Company that: 

A. Organization and Power. The Purchaser is a limited liability company duly organized, validly existing and in good standing under
the laws of the State of Delaware and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on the financial condition, operating results or assets of the
Company. The Purchaser possesses all requisite power and authority necessary to carry out the transactions contemplated by this Agreement and the Warrant Agreement. 

B. Authorization; No Breach. 

(i) This Agreement constitutes a valid and binding obligation of the Purchaser, enforceable in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or
law). 
 (ii) The execution and delivery by the Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by
the Purchaser does not and shall not as of the Closing Dates conflict with or result in a breach by the Purchaser of the terms, conditions or provisions of any agreement, instrument, order, judgment or decree to which the Purchaser is subject. 

C. Investment Representations. 

(i) The Purchaser is acquiring the Private Units, including the underlying Securities, for the Purchaser’s own account, for investment
purposes only and not with a view towards, or for resale in connection with, any public sale or distribution thereof. 

  
 3 

 (ii) The Purchaser is an “accredited investor” as such term is defined in
Rule 501(a)(3) of Regulation D. 
 (iii) The Purchaser understands that the Private Units, including the underlying Securities, are
being offered and will be sold to it in reliance on specific exemptions from the registration requirements of the United States federal and state securities laws and that the Company is relying upon the truth and accuracy of, and the
Purchaser’s compliance with, the representations and warranties of the Purchaser set forth herein in order to determine the availability of such exemptions and the eligibility of the Purchaser to acquire the Private Units and the underlying
Securities. 
 (iv) The Purchaser did not enter into this Agreement as a result of any general solicitation or general advertising within the
meaning of Rule 502(c) under the Securities Act of 1933, as amended (the “Securities Act”). 
 (v) The Purchaser has been
furnished with all materials relating to the business, finances and operations of the Company and materials relating to the offer and sale of the Private Units, including the underlying Securities, which have been requested by the Purchaser. The
Purchaser has been afforded the opportunity to ask questions of the executive officers and directors of the Company. The Purchaser understands that its investment in the Private Units, and the underlying Securities, involves a high degree of risk
and it has sought such accounting, legal and tax advice as it has considered necessary to make an informed investment decision with respect to the acquisition of the Private Units and the underlying Securities. 

(vi) The Purchaser understands that no United States federal or state agency or any other government or governmental agency has passed on or
made any recommendation or endorsement of the Private Units, or the underlying Securities, or the fairness or suitability of the investment in the Private Units, or the underlying Securities, by the Purchaser nor have such authorities passed upon or
endorsed the merits of the offering of the Private Units, including the underlying Securities. 
 (vii) The Purchaser understands that:
(a) the Private Units and the underlying Securities have not been and are not being registered under the Securities Act or any state securities laws, and may not be offered for sale, sold, assigned or transferred unless (1) subsequently
registered thereunder or (2) sold in reliance on an exemption therefrom; and (b) except as specifically set forth in the Registration Rights Agreement, neither the Company nor any other person is under any obligation to register the
Private Units or the underlying Securities under the Securities Act or any state securities laws or to comply with the terms and conditions of any exemption thereunder. 

(viii) The Purchaser has such knowledge and experience in financial and business matters, knowledge of the high degree of risk associated with
investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and risks of an investment in the Securities and is able to bear the economic risk of an investment in the Private Units,
including the underlying Securities, in the amount contemplated hereunder for an indefinite period of time. The Purchaser has adequate means of providing for its current financial needs and contingencies and will have no current or anticipated
future needs for liquidity which would be jeopardized by the investment in the Private Units or the underlying Securities. The Purchaser can afford a complete loss of its investments in the Private Units and the underlying Securities. 

Section 4. Conditions of the Purchaser’s Obligations. The obligations of the Purchaser to purchase and pay
for the Private Units are subject to the fulfillment, on or before the Closing Dates, of each of the following conditions: 

  
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 A. Representations and Warranties. The representations and warranties of the
Company contained in Section 2 shall be true and correct at and as of the Closing Dates as though then made. 

B. Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by it on or before the Closing Dates. 
 C. No Injunction. No
litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement or the Warrant Agreement. 

D. Warrant Agreement. The Company shall have entered into a Warrant Agreement with Continental Stock Transfer and Trust Company, as
warrant agent, on terms satisfactory to the Purchaser. 
 E. Insider Letter. The Company shall have entered into a letter (the
“Insider Letter”) by and among the Purchaser, the Company and certain other parties, setting forth certain voting agreements, restrictions on transfer (the “Lock-ups”) and
other agreements applicable to the Securities, the terms of which shall be satisfactory to the Purchaser. 

Section 5. Conditions of the Company’s Obligations. The obligations of the Company to the Purchaser under
this Agreement are subject to the fulfillment, on or before the Closing Dates, of each of the following conditions: 
 A. Representations
and Warranties. The representations and warranties of the Purchaser contained in Section 3 shall be true and correct at and as of the Closing Dates as though then made. 

B. Performance. The Purchaser shall have performed and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by the Purchaser on or before the Closing Dates. 
 C. No
Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any
self-regulatory organization having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this Agreement or the Warrant Agreement. 

D. Warrant Agreement and Registration Rights Agreement. The Company shall have entered into a Warrant Agreement with Continental
Stock Transfer and Trust Company, as warrant agent, and the Registration Rights Agreement, each on terms satisfactory to the Company. 
 E.
Insider Letter. The Purchaser shall have entered into an Insider Letter setting forth certain voting agreements, Lock-ups and other agreements applicable to the Securities, the terms of which shall be
satisfactory to the Company. 
 Section 6. Lock-ups. The Purchaser acknowledges that the
Securities will be subject to the Lock-ups contained in the Insider Letter.     

  
 5 

 Section 7. Termination. This Agreement may be terminated by
the Company at any time after [•], 2019 upon written notice to the Purchaser if the closing of the Public Offering does not occur prior to such date. 

Section 8. Survival of Representations and Warranties. All of the representations and warranties contained
herein shall survive the Closing Dates. 
 Section 9. Definitions. Terms used but not otherwise defined in
this Agreement shall have the meaning assigned to such terms in the Registration Statement. 
 Section 10. Miscellaneous. 

A. Successors and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement
by or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether so expressed or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not
assign this Agreement, other than assignments by the Purchaser to affiliates thereof. 
 B. Severability. Whenever possible, each
provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such provision shall be
ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of this Agreement. 
 C.
Counterparts. This Agreement may be executed simultaneously in two or more counterparts, none of which need contain the signatures of more than one party, but all such counterparts taken together shall constitute one and the same agreement.

 D. Descriptive Headings; Interpretation. The descriptive headings of this Agreement are inserted for convenience only and do
not constitute a substantive part of this Agreement. The use of the word “including” in this Agreement shall be by way of example rather than by limitation. 

E. Governing Law. This Agreement shall be deemed to be a contract made under the laws of the State of New York and for all purposes
shall be construed in accordance with the internal laws of the State of New York. 
 F. Amendments. This Agreement may not be
amended, modified or waived as to any particular provision, except by a written instrument executed by all parties hereto. 
 [Signature
page to follow] 

  
 6 

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

	
	GIGCAPITAL2, INC.
	
	  

	Dr. Avi S. Katz, Chairman of the Board and Chief Executive Officer
	
	GIGACQUISITIONS2, LLC
	
	  

	Dr. Avi S. Katz, Manager

 Signature page to Unit Purchase Agreement (GigAcquisitions2, LLC)

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