Document:

EX-10.9

 Exhibit 10.9 

GIGINTERNATIONAL1, INC. 

STRATEGIC SERVICES AGREEMENT 

This, the “Strategic Services Agreement”, is made on
this                day of                , 2021 (the “Effective Date”),
by and between GigInternational1, Inc. whose current address is 1731 Embarcadero Road, Suite 200, Palo Alto, CA 94303 (the “Company”), and Walter Bradford Weightman, hereinafter referred to
as the “Strategic Consultant”, which expression shall unless it be repugnant to the context or meaning thereof, deemed to mean and include his heirs, legal representatives, liquidators, executors, successors and assigns. The Company
and Strategic Consultant are hereinafter referred to singly as a “Party” and together as the “Parties”. 

WHEREAS, the Strategic Consultant is being appointed by the Company to offer certain professional services as per requirement of
the Company, on the terms and conditions as set forth below: 
 NOW, THEREFORE, in consideration of the mutual covenants as set
forth herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Parties agree as follows: 
  

	 	1	 Services 

The Strategic Consultant shall be appointed by the Company in the capacity of “Chief Financial Officer” to
render professional services as requested by the Company from time to time, in areas related to the benefit of the business of the Company. The appointment is effective as of the Effective Date. 

 

	 	2	 Term 

The term of the Agreement shall be for a period of 1 YEAR commencing on the Effective Date unless
terminated earlier by either side pursuant to Section 3 below. The Company may renew the Agreement at its sole discretion. During the term of the Agreement, the Strategic Consultant shall report to Dr. Raluca Dinu, the President, Chief
Executive Officer and Secretary of the Company. 
  

	 	3	 Termination 

The Company or the Strategic Consultant may terminate this Agreement by giving 15 DAYS’ written notice
to the other Party; provided that either Party may terminate this Agreement immediately upon written notice to the other Party in the event of a material breach of this Agreement by such other Party. Upon such termination, the obligations of both
Parties shall come to an end (except those obligations that expressly survive the termination of this Agreement) and the Strategic Consultant shall immediately hand over to the Company, all documents, papers, data, confidential information or any
other information obtained by him during the course of the Agreement and shall fully co-operate with the Company to ensure a smooth and orderly transition of information, data and records to the
Company. 
 The Company shall be relieved of any obligation to pay the Strategic Consultant for any services except for those, which may
have been performed up to the date of termination. 
  

	 	4	 Relationship 

The Strategic Consultant shall perform the services hereunder as an independent contractor. Except as specifically set forth herein, nothing
contained in this Agreement shall be construed as creating a contract of employment or fiduciary relationship or partnership between the Parties. This Agreement does not authorize the Parties to assume, create or undertake any obligation of any kind
expressed or implied, on behalf of or in the name of any of the other Party without express written consent. The Strategic Consultant shall not have any right or authority to accept any service of process or to receive any notices on behalf of the
Company or to enter into any commitments, undertakings or agreements purporting to obligate the Company in any way or to amend, modify or vary any existing agreements to which the Company is or shall be a party. 

	 	5	 Compliance with Laws 

The Strategic Consultant will be responsible for compliance with applicable United States federal and state laws, and the applicable laws of
any other country to which he may be deputed. The Strategic Consultant will indemnify the Company for all costs, including any interest, penalties and legal expenses and fees that the Company may incur as a result of the Strategic Consultant’s non-compliance with any laws. 
  

	 	6	 Taxes 

The Strategic Consultant shall be responsible for charging in the invoice and payment of any indirect taxes after recovery from the Company as
required by the regulations. All payments to the Strategic Consultant shall be subject to applicable United States federal, state and local taxes. 
  

	 	a.	 Insurance 

The Strategic Consultant shall be solely responsible for obtaining medical, accident and insurance policies and the Company shall have no
obligation or liability with respect to any expenses incurred by the Strategic Consultant relating to the above-referred risks. 
  

	 	7	 Compensation 

The Company shall pay to the Strategic Consultant a professional service compensation fee as mutually agreed to by the Company and the
Strategic Consultant, initially set at USD $5,000 (USD (Five Thousand) per month for such consulting services. The Company may pay to the Strategic Consultant additional compensation, as shall be mutually agreed between the
Parties on a case-by-case basis if, from time to time, the Company requests the Strategic Consultant to participate in investors meetings, activities and
roadshows. The Company will reimburse the Strategic Consultant for any pre-approved travel-related expenses incurred in connection with the provision of services hereunder, in writing in accordance
with the Company’s standard policies and procedures in effect from time to time. 
 The Strategic Consultant shall submit an invoice
for the services rendered by him at the end of the calendar month and the Company shall make a payment to the Strategic Consultant within 15 days from the date of receipt of the invoice. The Strategic Consultant shall submit all
receipts evidencing expenses that require reimbursement for any and all business-related expenses for the furtherance and promotion of the Company and reimbursements will be made within 15 days of submittal. 

 

	 	8	 Confidentiality 

During the term of this Agreement and thereafter at all times, the Strategic Consultant shall keep strictly confidential all non-public information regarding the Company and its business, including information regarding any transactions or proposed transactions, records and information received by him from the Company and/or
developed or prepared by her, pursuant to this Agreement. The Strategic Consultant shall sign, or has signed, a Confidential Information and Invention Assignment Agreement (the “Confidentiality Agreement”), substantially in the form
attached as Exhibit A hereto, on or before the date hereof. In the event that Strategic Consultant is an entity or otherwise will be causing individuals in its employ or under its supervision to participate in the rendering
of the Services, Consultant warrants that it shall cause each of such individuals to execute a Confidentiality Agreement. 
  

	 	9	 Performance 

Failure on part of the Company, at any time, to require performance of any provisions of the obligations of the Strategic Consultant set forth
in this Agreement, shall not affect the right to require full performance thereof at any time thereafter. 
  

	 	10	 Engagement 

This Agreement is executed based on the individual professional expertise of the Strategic Consultant and the Strategic Consultant agrees not
to assign this Agreement or any rights or obligations hereunder, to any third party without prior written consent of the Company. 

	 	11	 Amendment 

No modification, deletion, amendment or variation of any term or provision of this Agreement shall be of any force or effect, unless stated in
writing and signed by the parties, or in case of a waiver, signed by the Party granting the waiver. No verbal agreement or understanding or conduct of any nature relating to the subject matter hereof shall be considered valid and enforceable. 

 

	 	12	 Notice 

Any notices required or permitted to be given hereunder shall be given in writing and shall be delivered (a) in person, (b) by
certified mail, postage prepaid, return receipt requested, (c) by facsimile, (d) e-mail, or (e) by a commercial overnight courier that guarantees next day delivery and provides a
receipt, and such notices shall be addressed as follows: 
 If to the Company: 

GigInternational1, Inc. 
 1731
Embarcadero Road, Suite 200, 
 Palo Alto, CA 94303 

Attn: Dr. Raluca Dinu, President 

and Chief Executive Officer 

If to the Strategic Consultant: 

Walter Bradford Weightman 

Email: [***] 
 Any notice shall
be effective only upon delivery, which for any notice given by facsimile shall mean notice that has been received by the Party to whom it is sent as evidenced by confirmation slip. 

 

	 	13	 Indemnification 

Subject to Section 15 below, the Strategic Consultant shall be entitled to indemnification by the
Company pursuant to an Indemnification Agreement being entered into between the Company and the Strategic Consultant on or about the date hereof. 

The Strategic Consultant hereby agrees to indemnify and hold harmless the Company, its partners, subsidiaries, affiliates, successors and
assigns, and each of their officers, directors, agents, contractors, subcontractors and employees (collectively referred to as the “Indemnitees”), against and from any and all claims, liabilities, damages, fines, penalties or costs
of whatsoever nature (including reasonable attorneys’ fees), and whether by reason of death of or injury to any person or loss of or damage to any property or otherwise (and including, without limitation, any tax or benefit liability, fines or
penalties which may be claimed, asserted or imposed by any governmental authority based upon payment of fees to the Strategic Consultant), arising out of or in any way connected with (i) this Agreement, (ii) the services to be provided by
the Strategic Consultant pursuant to this Agreement, or (iii) any related act or failure to act by Strategic Consultant, whether or not contributed to by the negligence of any Indemnitee or any agent or employee of any Indemnitees (except as
and to the extent otherwise prohibited by applicable law). 
  

	 	14	 Other Obligations 

The Strategic Consultant represents and warrants to the Company that he currently is under no contract or agreement, nor has the Strategic
Consultant previously executed any documents whatsoever with any other person, firm, association, or corporation that will, in any manner, prevent the Strategic Consultant from providing the services contemplated under this Agreement. 

 

	 	15	 Waiver 

The Strategic Consultant understands that the Company will establish a trust account (the “Trust Account”), in the amount of
approximately $202,000,000.00 (or $232,300,000 if the underwriters exercise their over-allotment) for the benefit of the Company’s public stockholders, and that the Company may disburse monies from the Trust Account only under the limited
circumstances to be set 

 
forth in the prospectus for the Company’s initial public offering. The Strategic Consultant hereby agrees that he does not have any right, title, interest or claim of any kind in or to any
monies in the Trust Account (“Claim”) and waives any Claim he may have in the future as a result of, or arising out of, any services provided to the Company hereunder and will not seek recourse against the Trust Account for any
breach by the Company of this Agreement or for any other reason. This section shall survive the termination of this Agreement for any reason. 
  

	 	16	 Miscellaneous 

 

	 	a.	 Entire Agreement. This Agreement constitutes the entire agreement and understanding
between the parties with respect to the Strategic Consultant’s engagement by the Company, and the other subject matters contained herein, expressly superseding all prior written, oral or implied agreements and understandings.

  

	 	b.	 Waiver. The waiver by any Party of any breach of any covenant or condition of this
Agreement shall not be construed as a waiver of any subsequent breach of such covenant or condition or of the breach of any other restrictive covenant or condition contained in this Agreement. 

 

	 	c.	 Headings. Any section or paragraph title or caption contained in this Agreement is
for convenience only, and in no way defines, limits or describes the scope or intent of this Agreement or any of the provisions hereof. 

  

	 	d.	 Successors. The Company may assign the rights and benefits given to it in this
Agreement. This Agreement shall also survive any sale of assets, merger, consolidation, or other change in the corporate structure of the Company. The duties of the Strategic Consultant hereunder are personal in nature and, therefore, may not be
assigned. 

  

	 	e.	 Severability. If any term, condition, or provision of this Agreement shall be found
to be illegal or unenforceable for any reason, such provision shall be modified or deleted so as to make the balance of this Agreement, as modified, valid and enforceable to the fullest extent permitted by applicable law. 

 

	 	f.	 Amendment or Modifications. This agreement shall not be amended, revoked, altered or
modified in whole or in part, except by an agreement in writing signed by the parties. 

  

	 	g.	 Governing Law. All questions relating to the interpretation, performance or breach of
this Agreement shall be governed by the law of the State of California. Any action relating to this Agreement or the performance of the Strategic Consultant’s services hereunder shall be filed exclusively in either the Federal or Superior Court
of the County of Santa Clara. The Company and the Strategic Consultant consent to exclusive venue in these courts and waive any possible objection thereto. 

  

	 	h.	 Construction. This Agreement shall not be construed against any Party by reason of
the fact that the Party may be responsible for the drafting of this Agreement or any provision hereof. 

  

	 	i.	 Knowledge of Rights and Duties. The Parties have carefully reviewed and completely
read all of the provisions of this Agreement and understand and have been advised that they should consult with their own legal counsel for any and all explanations of their rights, duties, obligations and responsibilities hereunder.

  

	 	j.	 Survival. The provisions of Sections 3 through 11, 15 and 16 of this Agreement shall survive the
termination or expiration, for any reason, of this Agreement. 

 IN WITNESS WHEREOF, the Parties have executed this Agreement as of the first
date set forth above. 
  

			
	 GIGINTERNATIONAL1, INC.

		
	 By:
	 	  

	 Name:
	 	 Dr. Raluca Dinu

	 Title:
	 	 President and Chief Executive Officer

	
	 STRATEGIC CONSULTANT:

		
	 By:
	 	  

	 Name:
	 	 Walter Bradford Weightman

 Signature page to Strategic Services Agreement 

 GIGINTERNATIONAL1, INC. 

CONFIDENTIAL INFORMATION AND 

INVENTION ASSIGNMENT AGREEMENT 

As a condition of my becoming retained as a consultant (or my consulting relationship being continued) by GigInternational1, Inc., a Delaware
corporation (“GigInternational1”), or any of its current or future subsidiaries, affiliates, successors or assigns (collectively, the “Company”), and in consideration of my consulting relationship with the Company
and my receipt of the compensation now and hereafter paid to me by the Company, I agree to the following: 

1. Consulting Relationship. I understand and acknowledge that this Agreement does not alter, amend
or expand upon any rights I may have to continue in a consulting relationship with, or in the duration of my consulting relationship with, the Company under any existing agreements between the Company and me, including but not limited to the
consulting agreement entered into by and between the Company and me, dated                 , 2021 (the “Consulting Agreement”) or under applicable law.
Any consulting relationship between the Company and me, whether commenced prior to or upon the date of this Agreement, shall be referred to herein as the “Relationship.” 

2. Confidential Information. 

(a) Company Information. I agree at all times during the term of my Relationship with the Company
and thereafter, to hold in strictest confidence, and not to use, except for the benefit of the Company to the extent necessary to perform my obligations to the Company under the Relationship, or to disclose to any person, firm, corporation or other
entity without written authorization of the Chief Executive Officer of the Company, any Confidential Information of the Company. I further agree not to make copies of such Confidential Information except as authorized by the Company. I understand
that “Confidential Information” means any Company proprietary information, technical data, trade secrets or know-how, including, but not limited to, research, product plans,
products, services, suppliers, customer lists and customers (including, but not limited to, customers of the Company on whom I called or with whom I became acquainted during the Relationship), prices and costs, markets, software, developments,
inventions, laboratory notebooks, processes, formulas, technology, designs, drawings, engineering, hardware configuration information, marketing, licenses, finances, budgets or other business information disclosed to me by the Company either
directly or indirectly in writing, orally or by drawings or observation of parts or equipment or created by me during the period of the Relationship, whether or not during working hours. I understand that Confidential Information includes, but is
not limited to, information pertaining to any aspect of the Company’s business which is either information not known by actual or potential competitors of the Company or other third parties not under confidentiality obligations to the Company,
or is otherwise proprietary information of the Company or its customers or suppliers, whether of a technical nature or otherwise. I further understand that Confidential Information does not include any of the foregoing items which has become
publicly and widely known, and made generally available, to third parties through no wrongful act of mine or of others who were under confidentiality obligations as to the item or items involved. 

(b) Prior Obligations. I represent that my performance of all terms of this Agreement as a
consultant of the Company has not breached and will not breach any agreement to keep in confidence proprietary information, knowledge or data acquired by me prior or subsequent to the commencement of my Relationship with the Company, and I will not
disclose to the Company, or use, any inventions, confidential or non-public proprietary information or material belonging to any current or former client or employer or any other party. I will not
induce the Company to use any inventions, confidential or non-public proprietary information or material belonging to any current or former client or employer or any other party. 

(c) Third Party Information. I recognize that the Company has received and in the future will
receive confidential or proprietary information from third parties subject to a duty on the Company’s part to maintain the confidentiality of such information and to use it only for certain limited purposes. I agree to hold all such
confidential or proprietary information in the strictest confidence and not to disclose it to any person, firm or corporation or to use it except as necessary in carrying out my work for the Company consistent with the Company’s agreement with
such third party. 

 3. Inventions. 

(a) Inventions Retained and Licensed. I have attached hereto, as Exhibit A, a
list describing with particularity all inventions, original works of authorship, developments, improvements, and trade secrets which were made by me prior to the commencement of the Relationship (collectively referred to as “Prior
Inventions”), which belong solely to me or belong to me jointly with another, which relate in any way to any of the Company’s proposed businesses, products or research and development, and which are not assigned to the Company
hereunder; or, if no such list is attached, I represent that there are no such Prior Inventions. If, in the course of my Relationship with the Company, I incorporate into a Company product, process or machine a Prior Invention owned by me or in
which I have an interest, the Company is hereby granted and shall have a non-exclusive, royalty-free, irrevocable, perpetual, worldwide license (with the right to sublicense) to make, have made,
copy, modify, make derivative works of, use, sell and otherwise distribute such Prior Invention as part of or in connection with such product, process or machine. 

(b) Assignment of Inventions. I agree that I will promptly make full written disclosure to the
Company, will hold in trust for the sole right and benefit of the Company, and hereby assign to the Company, or its designee, all my right, title and interest throughout the world in and to any and all inventions, original works of authorship,
developments, concepts, know-how, improvements or trade secrets, whether or not patentable or registrable under copyright or similar laws, which I may solely or jointly conceive or develop or reduce
to practice, or cause to be conceived or developed or reduced to practice, during the period of time in which I am employed by or a consultant of the Company (collectively referred to as “Inventions”), except as provided in
Section 3(e) below. 
 (c) Maintenance of Records. I agree to keep and maintain adequate
and current written records of all Inventions made by me (solely or jointly with others) during the term of my Relationship with the Company. The records may be in the form of notes, sketches, drawings, flow charts, electronic data or recordings,
laboratory notebooks, and any other format. The records will be available to and remain the sole property of the Company at all times. I agree not to remove such records from the Company’s place of business except as expressly permitted by
Company policy which may, from time to time, be revised at the sole election of the Company for the purpose of furthering the Company’s business. I agree to return all such records (including any copies thereof) to the Company at the time of
termination of my Relationship with the Company as provided for in Section 4. 
 (d) Patent and Copyright
Rights. I agree to assist the Company or its designee, at its expense, in every proper way to secure the Company’s, or its designee’s, rights in the Inventions and any copyrights, patents, trademarks, mask work rights,
moral rights, or other intellectual property rights relating thereto in any and all countries, including the disclosure to the Company or its designee of all pertinent information and data with respect thereto, the execution of all applications,
specifications, oaths, assignments, recordations, and all other instruments which the Company or its designee shall deem necessary in order to apply for, obtain, maintain and transfer such rights, or if not transferable, waive such rights, and in
order to assign and convey to the Company or its designee and any successors, assigns and nominees the sole and exclusive rights, title and interest in and to such Inventions, and any copyrights, patents, mask work rights or other intellectual
property rights relating thereto. I further agree that my obligation to execute or cause to be executed, when it is in my power to do so, any such instrument or papers shall continue after the termination of this Agreement until the expiration of
the last such intellectual property right to expire in any country of the world. If the Company or its designee is unable because of my mental or physical incapacity or unavailability or for any other reason to secure my signature to apply for or to
pursue any application for any United States or foreign patents, copyright, mask works, or other registrations covering Inventions or original works of authorship assigned to the Company or its designee as above, then I hereby irrevocably designate
and appoint the Company and its duly authorized officers and agents as my agent and attorney in fact, to act for and in my behalf and stead to execute and file any such applications and to do all other lawfully permitted acts to further the
application for, prosecution, issuance, maintenance or transfer of letters patent, copyright or other registrations thereon with the same legal force and effect as if originally executed by me. I hereby waive and irrevocably quitclaim to the Company
or its designee any and all claims, of any nature whatsoever, which I now or hereafter have for infringement of any and all proprietary rights assigned to the Company or such designee. 

(e) Exception to Assignments. I understand that, notwithstanding the terms of the Consulting
Agreement, in the event my Relationship with the Company is at any time determined to be that of an employee for the purposes of California Labor Code Section 2870, the provisions of this Agreement requiring assignment of Inventions to the
Company do not apply to any invention which qualifies fully under the provisions of California Labor Code Section 2870 (attached hereto as Exhibit B). I will advise the Company promptly in writing of any inventions that I
believe meet such provisions and are not otherwise disclosed on Exhibit A. 

 4. Company Property; Returning Company
Documents. I acknowledge and agree that I have no expectation of privacy with respect to the Company’s telecommunications, networking or information processing systems (including, without limitation, stored company files, e-mail messages and voice messages) and that my activity and any files or messages on or using any of those systems may be monitored at any time without notice. I further agree that any property
situated on the Company’s premises and owned by the Company, including disks and other storage media, filing cabinets or other work areas, is subject to inspection by Company personnel at any time with or without notice. I agree that, at the
time of termination of my Relationship with the Company, I will deliver to the Company (and will not keep in my possession, recreate or deliver to anyone else) any and all devices, records, data, notes, reports, proposals, lists, correspondence,
specifications, drawings, blueprints, sketches, laboratory notebooks, materials, flow charts, equipment, other documents or property, or reproductions of any of the aforementioned items, developed by me pursuant to the Relationship or otherwise
belonging to the Company, its successors or assigns. In the event of the termination of the Relationship, I agree to sign and deliver the “Termination Certification” attached hereto as Exhibit C, however, my
failure to sign and deliver the Termination Certificate shall in no way diminish my continuing obligations under this Agreement. 

5. Notification to Other Parties. I hereby grant consent to notification by the Company to any
other parties besides the Company with whom I maintain a consulting or employment relationship, including parties with whom such relationship commences after the effective date of this Agreement, about my rights and obligations under this Agreement.

 6. Solicitation of Employees, Consultants and Other Parties. I agree that during the term of
my Relationship with the Company, and for a period of twenty-four months immediately following the termination of my Relationship with the Company for any reason, whether with or without cause, I shall not either directly or indirectly solicit,
induce, recruit or encourage any of the Company’s employees or consultants to terminate their relationship with the Company, or attempt to solicit, induce, recruit, encourage or take away employees or consultants of the Company, either for
myself or for any other person or entity. Further, during my Relationship with the Company and at any time following termination of my Relationship with the Company for any reason, with or without cause, I shall not use any information rising to the
level of a trade secret of the Company: (i) to attempt to negatively influence any of the Company’s clients or customers from purchasing Company products or services; (ii) to solicit or influence or attempt to influence any client,
customer or other person either directly or indirectly; or, (iii) to direct any of the Company’s clients or customers to purchase products and/or services – from any person, firm, corporation, institution or other entity in
competition with the business of the Company. 
 7. Representations and Covenants. 

(a) Facilitation of Agreement. I agree to execute promptly any proper oath or verify any proper
document required to carry out the terms of this Agreement upon the Company’s written request to do so. 

(b) Conflicts. I represent that my performance of all the terms of this Agreement does not and
will not breach any agreement I have entered into, or will enter into with any third party, including without limitation any agreement to keep in confidence proprietary information acquired by me in confidence or in trust prior to commencement of my
Relationship with the Company. I represent that I do not presently perform or intend to perform, during the term of the Consulting Agreement, consulting or other services for, and I am not presently employed by and have no intention of being
employed by, companies whose businesses or proposed businesses in any way involve products or services which would be competitive with the Company’s products or services, or those products or services proposed or in development by the Company
during the term of the Consulting Agreement (except for those companies, if any, listed on Exhibit D attached hereto). If, however, I decide to do so, I agree that, in advance of accepting such employment or agreeing to
perform such services, I will promptly notify the Company in writing, specifying the organization with which I propose to consult, become employed by, or otherwise provide services to, and provide information sufficient to allow the Company to
determine if such work would conflict with the interests of the Company or further services which the Company might request of me. 

(c) Voluntary Execution. I certify and acknowledge that I have carefully read all of the
provisions of this Agreement and that I understand and will fully and faithfully comply with such provisions. 

8. General Provisions. 

(a) Governing Law. The validity, interpretation, construction and performance of this Agreement
shall be governed by the laws of the State of California, without giving effect to the principles of conflict of laws. 

 (b) Entire Agreement. This Agreement sets forth
the entire agreement and understanding between the Company and me relating to the subject matter herein and merges all prior discussions between us. No modification or amendment to this Agreement, nor any waiver of any rights under this Agreement,
will be effective unless in writing signed by both parties. 
 (c) Severability. If any term or
provision of this Agreement or the application thereof to any circumstance shall, in any jurisdiction and to any extent, be invalid or unenforceable, such term or provision shall be ineffective as to such jurisdiction to the extent of such
invalidity or unenforceability without invalidating or rendering unenforceable the remaining terms and provisions of this Agreement or the application of such terms and provisions to circumstances other than those as to which it is held invalid or
unenforceable, and a suitable and equitable term or provision shall be substituted therefor to carry out, insofar as may be valid and enforceable, the intent and purpose of the invalid or unenforceable term or provision. In the event that any court
or government agency of competent jurisdiction determines that, notwithstanding the terms of the Consulting Agreement specifying my Relationship with the Company as that of an independent contractor, my provision of services to the Company is not as
an independent contractor but instead as an employee under the applicable laws, then solely to the extent that such determination is applicable, references in this Agreement to the Relationship between me and the Company shall be interpreted to
include an employment relationship, and this Agreement shall not be invalid and unenforceable but shall be read to the fullest extent as may be valid and enforceable under the applicable laws to carry out the intent and purpose of the Agreement.

 (d) Successors and Assigns. This Agreement will be binding upon my heirs, executors,
administrators and other legal representatives, and my successors and assigns, including, in the event that Consultant is an entity, any successor entity, and will be for the benefit of the Company, its successors, and its assigns. 

(e) Survival. The provisions of this Agreement shall survive the termination of the Relationship
and the assignment of this Agreement by the Company to any successor in interest or other assignee. 

(f) Remedies. I acknowledge and agree that violation of this Agreement by me may cause the Company irreparable
harm, and therefore agree that the Company will be entitled to seek extraordinary relief in court, including but not limited to temporary restraining orders, preliminary injunctions and permanent injunctions without the necessity of posting a bond
or other security and in addition to and without prejudice to any other rights or remedies that the Company may have for a breach of this Agreement. 

(g) Attorneys’ Fees. If any action, suit, arbitration or other proceeding for the enforcement
of this Agreement is brought with respect to or because of an alleged dispute, breach, default or misrepresentation in connection with any of the provisions hereof, the successful or prevailing party shall be entitled to recover reasonable
attorneys’ fees and other costs incurred in that proceeding, in addition to any other relief to which it may be entitled. 

(h) ADVICE OF COUNSEL. I ACKNOWLEDGE THAT, IN EXECUTING THIS AGREEMENT, I HAVE HAD THE OPPORTUNITY
TO SEEK THE ADVICE OF INDEPENDENT LEGAL COUNSEL, AND I HAVE READ AND UNDERSTOOD ALL OF THE TERMS AND PROVISIONS OF THIS AGREEMENT. THIS AGREEMENT SHALL NOT BE CONSTRUED AGAINST ANY PARTY BY REASON OF THE DRAFTING OR PREPARATION HEREOF. 

[Signature Page Follows] 

 The parties have executed this Agreement on the respective dates set forth below: 

 

			
	GIGINTERNATIONAL1, INC.	  	CONSULTANT:
		  	Walter Bradford Weightman, an Individual
		
	By:                                     
                                         
   	  	By:                                     
                                         
   
	Name: Dr. Raluca Dinu	  	
	Title: Chief Executive Officer, President and Secretary	  	

  

							
	Date:	  	        , 2021	  	Date:	  	        , 2021
	Address:	  	1731 Embarcadero Road, Suite 200,	  	Address:	  	[***]
		  	Palo Alto, CA 94303EX-10.12

 Exhibit 10.12 

INVESTMENT MANAGEMENT TRUST AGREEMENT 

This Agreement is made as of [                ], 2021 by and
between GigInternational1, Inc. (the “Company”), having its principal office located at 1731 Embarcadero Rd., Suite 200, Palo Alto, CA 94303 and Continental Stock Transfer & Trust Company (the
“Trustee”) located at 1 State Street, 30th Floor, New York, New York 10004. 
 WHEREAS, the Company’s
Registration Statement on Form S-1, as amended, No. 333-255234 (together with any related registration statement filed pursuant to
Rule 462(b), the “Registration Statement”), for the initial public offering of the Company’s units (the “Public Units”), each of which consists of one share of the
Company’s common stock, par value $0.0001 per share (the “Common Stock”; and the Common Stock included in the Public Units, the “Public Common
Stock”), and one-half of one warrant, each whole warrant (a “Warrant”) entitling the holder thereof to purchase one share of Common Stock (such initial
public offering hereinafter referred to as the “IPO”), has been declared effective as of [                ], 2021 by the U.S. Securities and
Exchange Commission; 
 WHEREAS, the Company has entered into an Underwriting Agreement, dated as of
[                ], 2021, with Oppenheimer & Co. Inc. and William Blair & Company, L.L.C., as representatives (the
“Representatives”) of the underwriters (the “Underwriters”) named therein (the “Underwriting Agreement”), with respect to the IPO; 

WHEREAS, GigInternational1 Sponsor, LLC, a Delaware limited liability company (the “Sponsor”), and the Underwriters
have committed, pursuant to written agreements, to purchase an aggregate of 950,000 of the Company’s units (or 995,000 units if the Underwriters’ over-allotment option is exercised in full) (the “Private Units”),
each of which consists of one share of Common Stock and one-half of one Warrant, in a private placement that will close simultaneously with the IPO; 

WHEREAS, as described in the Registration Statement, $202,000,000 of the gross proceeds of the IPO and the sale of the Private Units
($232,300,000 if the Underwriters’ over-allotment option is exercised in full) will be delivered to the Trustee to be deposited and held in a segregated trust account located in the United States (the “Trust Account”)
for the benefit of the Company, the holders of the Public Common Stock and the Underwriters (the amount to be delivered to the Trustee, and any interest subsequently earned thereon, will be referred to herein as the
“Property”; the stockholders for whose benefit the Trustee shall hold the Property will be referred to as the “Public Stockholders,” and the Public Stockholders, the Company and the Underwriters will
be referred to together as the “Beneficiaries”), provided that the Sponsor (or its designees) must deposit into the Trust Account funds equal to one percent (1%) of the gross proceeds of the IPO (including such proceeds from
the exercise of the underwriters’ over-allotment option, if exercised) for each 3-month extension of the time period to complete its initial Business Combination, in exchange for a non-interest bearing, unsecured promissory note; and 

WHEREAS, the Company and the Trustee desire to enter into this Agreement to set forth the terms and conditions pursuant to which the Trustee
shall hold the Property. 
 IT IS AGREED: 

1. Agreements and Covenants of Trustee. The Trustee hereby agrees and covenants to: 

(a) Hold the Property in trust for the Beneficiaries in accordance with the terms of this Agreement in the Trust Account, which Trust Account
shall be established by the Trustee at a branch of J.P. Morgan Chase Bank, N.A. and at a brokerage institution selected by the Trustee that is satisfactory to the Company; 

(b) Manage, supervise and administer the Trust Account subject to the terms and conditions set forth herein; 

(c) In a timely manner, upon the instruction of the Company, to invest and reinvest the Property in United States “government
securities” within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended (the “Investment Company Act”), having a maturity of 185 days or less, and/or in any open ended investment company
registered under the Investment Company Act that holds itself out as a money market fund selected by the Company meeting the conditions of paragraphs (d)(2), (d)(3) and
(d)(4) of Rule 2a-7 promulgated under the Investment Company Act or any successor rule, which invests only in direct U.S. government treasury obligations, as determined by the
Company. As used herein, “government securities” shall mean United States Treasury Bills; the Trustee may not invest in any other securities or assets, it being understood that the Trust Account will earn no interest while account funds
are uninvested awaiting the Company’s instructions hereunder and the Trustee may earn bank credits or other consideration during such periods; 

 (d) Collect and receive, when due, all principal and interest income arising from the
Property, all of which income shall become part of the Property and which interest income can then be released to the Company to the extent required to pay taxes when requested by the Company as provided for in Section 1(l) below; 

(e) Notify the Company and the Representatives of all communications received by it with respect to any Property requiring action by the
Company; 
 (f) Supply any necessary information or documents as may be requested by the Company or its authorized agents in connection with
the Company’s preparation of the tax returns relating to assets held in the Trust Account; 
 (g) Participate in any plan or proceeding
for protecting or enforcing any right or interest arising from the Property if, as and when instructed by the Company in writing to do so; 

(h) Render to the Company, and to such other person as the Company may instruct, monthly written statements of the activities of and amounts in
the Trust Account reflecting all receipts and disbursements of the Trust Account; 
 (i) Commence liquidation of the Trust Account only after
and promptly after (x) receipt of, and only in accordance with, the terms of a letter from the Company (“Termination Letter”) in a form substantially similar to that attached hereto as
either Exhibit A or Exhibit B signed on behalf of the Company by the Chief Executive Officer or Chief Financial Officer of the Company or by the Executive Chairman of the Board of
Directors of the Company (the “Board”) or other authorized officer of the Company, and, in the case of a Termination Letter in a form substantially similar to the attached hereto as Exhibit A, acknowledged and
agreed to by the Representatives, and complete the liquidation of the Trust Account and distribute the Property in the Trust Account, including interest (less up to $100,000 of interest that may be released to the Company to pay dissolution expenses
in the case of a Termination Letter in the form of Exhibit B hereto and which interest shall be net of any taxes payable), only as directed in the Termination Letter and the other documents referred to
therein, or (y) the date which is the later of (i) 15 months after the closing of the IPO, provided that the Company may, but is not obligated to, extend the period of time to consummate its initial Business Combination two times by an
additional three months each time (for a total of up to 21 months to complete its initial Business Combination); further provided that upon each 3-month extension of the period of time to consummate an initial Business Combination, the Sponsor (or
its designees) must deposit into the Trust Account funds equal to one percent (1%) of the gross proceeds of the IPO (including such proceeds from the exercise of the underwriters’ over-allotment option, if exercised) in exchange for a
non-interest bearing, unsecured promissory note, and (ii) such later date as may be approved by the Company’s stockholders in accordance with the Company’s Amended and Restated Certificate of Incorporation, as filed with the Secretary
of State of the State of Delaware (the “Amended and Restated Certificate”) if a Termination Letter has not been received by the Trustee prior to such date, in
which case the Trust Account shall be liquidated in accordance with the procedures set forth in the form of letter attached hereto as Exhibit B and the Property in the Trust Account, including interest (less up to $100,000 of
interest that may be released to the Company to pay dissolution expenses in the case of a Termination Letter in the form of Exhibit B hereto and which interest shall be net of any taxes payable), shall be distributed to the
Public Stockholders of record as of such date; provided, however, that in the event the Trustee receives a Termination Letter in a form substantially similar to Exhibit B hereto, or if
the Trustee begins to liquidate the Property because it has received no such Termination Letter by the date specified in clause (y) of this Section 1(i), the Trustee shall keep the Trust Account open until twelve
(12) months following the date the Property has been distributed to the Public Stockholders; 
 (j) Upon written request from the
Company, which may be given from time to time in a form substantially similar to that attached hereto as Exhibit C (a “Tax Payment Withdrawal Instruction”), withdraw from the Trust Account and
distribute to the Company the amount of interest earned on the Property requested by the Company to cover any tax obligation owed by the Company as a result of assets of the Company or interest or other income earned on the Property, which amount
shall be delivered directly to the Company by electronic funds transfer or other method of prompt payment, and the Company shall forward such payment to the relevant taxing authority; provided, however, that to
the extent there is not sufficient cash in the Trust Account to pay such tax obligation, the Trustee shall liquidate such assets held in the Trust Account as shall be designated by the Company in writing to make such distribution so long as such
distribution shall not result in a reduction in the principal amount initially deposited in the Trust Account; provided, further, that if the tax to be paid is a franchise tax, the written request by the Company
to make such distribution shall be accompanied by a copy of the franchise tax bill from the State of Delaware for the Company and a written statement from the principal financial officer of the 

 
Company setting forth the actual amount payable (it being acknowledged and agreed that any such amount in excess of interest income earned on the Property shall not be payable from the Trust
Account). The written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to said funds, and the Trustee shall have no responsibility to look beyond said request; 

(k) Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached hereto
as Exhibit D (a “Stockholder Redemption Withdrawal Instruction”), the Trustee shall distribute to the Public Stockholders of record as of the applicable date the amount requested by the Company to be
used to redeem shares of Public Common Stock from Public Stockholders properly submitted in connection with a stockholder vote to approve an amendment to any provision of the Amended and Restated
Certificate relating to pre-initial Business Combination (as defined below) activity or the related stockholders’ rights. The written request of the Company referenced above
shall constitute presumptive evidence that the Company is entitled to said funds, and the Trustee shall have no responsibility to look beyond said request; and 

(l) Not make any withdrawals or distributions from the Trust Account other than pursuant to Sections
1(i), 1(j) or 1(k) above. 
 2. Agreements and Covenants of the Company. The Company
hereby agrees and covenants to: 
 (a) Give all instructions to the Trustee hereunder in writing, signed by the Company’s President, the
Executive Chairman of the Board or the Company’s Chief Executive Officer or Chief Financial Officer. In addition, except with respect to its duties under Sections
1(i), 1(j) and 1(k) above, the Trustee shall be entitled to rely on, and shall be protected in relying on, any verbal or telephonic advice or instruction which it, in good faith and with reasonable
care, believes to be given by any one of the persons authorized above to give written instructions, provided that the Company shall promptly confirm such instructions in writing; 

(b) Subject to Section 4 hereof, hold the Trustee harmless and indemnify the Trustee from and
against any and all expenses, including reasonable counsel fees and disbursements, or losses suffered by the Trustee in connection with any action taken by it hereunder and in connection with any action, suit or other proceeding brought against the
Trustee involving any claim, or in connection with any claim or demand, which in any way arises out of or relates to this Agreement, the services of the Trustee hereunder, or the Property or any interest earned on the Property, except for expenses
and losses resulting from the Trustee’s gross negligence, fraud or willful misconduct. Promptly after the receipt by the Trustee of notice of demand or claim or the commencement of any action, suit or proceeding, pursuant to which the Trustee
intends to seek indemnification under this Section 2(b), it shall notify the Company in writing of such claim (hereinafter referred to as the “Indemnified Claim”). The Trustee shall have the right to
conduct and manage the defense against such Indemnified Claim; provided, that the Trustee shall obtain the consent of the Company with respect to the selection of counsel, which consent shall not be unreasonably withheld or
delayed. The Trustee may not agree to settle any Indemnified Claim without the prior written consent of the Company, which such consent shall not be unreasonably withheld or delayed. The Company may participate in such action with its own counsel;

 (c) Pay the Trustee the fees set forth on Schedule A hereto, including an initial acceptance fee, annual
administration fee, and transaction processing fee which fees shall be subject to modification by the parties from time to time. It is expressly understood that the Property shall not be used to pay such fees unless and until it is distributed
pursuant to Sections 1(i) through 1(k) hereof. The Company shall pay the Trustee the initial acceptance fee and the first annual administration fee at the consummation of the IPO, and, thereafter pay
the annual fee. The Trustee shall refund to the Company the annual fee (on a pro rata basis) with respect to any period after the liquidation of the Trust Account. The Company shall not be responsible for any other fees or charges of the Trustee
except as set forth in this Section 2(c), Schedule A and as may be provided in Section 2(b) hereof; 

(d) In connection with any vote of the Company’s stockholders regarding a merger, capital stock exchange, asset acquisition, stock
purchase, reorganization or similar business combination involving the Company and one or more businesses (the “Business Combination”), provide to the Trustee an affidavit or certificate of the inspector of elections for the
stockholder meeting verifying the vote of such stockholders regarding such Business Combination; 

 (e) Provide the Representatives with a copy of any Termination Letter(s) and/or any other
correspondence that is sent to the Trustee with respect to any proposed withdrawal from the Trust Account promptly after it issues the same; and 

(f) In the event that the Company directs the Trustee to commence liquidation of the Trust Account pursuant
to Section 1(i), the Company agrees that it will not direct the Trustee to make any payments not specifically authorized by this Agreement. 

3. Limitations of Liability. The Trustee shall have no responsibility or liability to: 

(a) Imply obligations, perform duties, inquire or otherwise be subject to the provisions of any agreement or document other than this agreement
and that which is expressly set forth herein; 
 (b) Take any action with respect to the Property, other than as directed
in Section 1 hereof, and the Trustee shall have no liability to any party except for liability arising out of the Trustee’s gross negligence, fraud or willful misconduct; 

(c) Institute any proceeding for the collection of any principal and income arising from, or institute, appear in or defend any proceeding of
any kind with respect to, any of the Property unless and until it shall have received written instructions from the Company given as provided herein to do so and the Company shall have advanced or guaranteed to it funds sufficient to pay any
expenses incident thereto; 
 (d) Change the investment of any Property, other than in compliance
with Section 1(c); 
 (e) Refund any depreciation in principal of any Property; 

(f) Assume that the authority of any person designated by the Company to give instructions hereunder shall not be continuing unless provided
otherwise in such designation, or unless the Company shall have delivered a written revocation of such authority to the Trustee; 
 (g) The
other parties hereto or to anyone else for any action taken or omitted by it, or any action suffered by it to be taken or omitted, in good faith and in the exercise of its own best judgment, except for the Trustee’s gross negligence, fraud or
willful misconduct. The Trustee may rely conclusively and shall be protected in acting upon any order, judgment, instruction, notice, demand, certificate, opinion or advice of counsel (including counsel chosen by the Trustee, which counsel may be
the Company’s counsel), statement, instrument, report or other paper or document (not only as to its due execution and the validity and effectiveness of its provisions, but also as to the truth and acceptability of any information therein
contained) which the Trustee believes, in good faith, to be genuine and to be signed or presented by the proper person or persons. The Trustee shall not be bound by any notice or demand, or any waiver, modification, termination or rescission of this
Agreement or any of the terms hereof, unless evidenced by a written instrument delivered to the Trustee, signed by the proper party or parties and, if the duties or rights of the Trustee are affected, unless it shall give its prior written consent
thereto; 
 (h) Verify the accuracy of the information contained in the Registration Statement; 

(i) Provide any assurance that any Business Combination entered into by the Company or any other action taken by the Company is as contemplated
by the Registration Statement; 
 (j) File information returns with respect to the Trust Account with any local, state or federal taxing
authority or provide periodic written statements to the Company documenting the taxes payable by the Company, if any, relating to any interest income earned on the Property; 

(k) Prepare, execute and file tax reports, income or other tax returns and pay any taxes with respect to any income generated by, and
activities relating to, the Trust Account, regardless of whether such tax is payable by the Trust Account or the Company, including, but not limited to, income tax obligations, except pursuant
to Section 1(j) hereof; or 

 (l) Verify calculations, qualify or otherwise approve the Company’s written requests
for distributions pursuant to Sections 1(i), 1(j) and 1(k) hereof. 

4. Trust Account Waiver. The Trustee has
no right of set-off or any right, title, interest or claim of any kind (“Claim”) to, or to any monies in, the Trust Account, and hereby irrevocably waives
any Claim to, or to any monies in, the Trust Account that it may have now or in the future. In the event the Trustee has any Claim against the Company under this Agreement, including, without limitation,
under Section 2(b) or Section 2(c) hereof, the Trustee shall pursue such Claim solely against the Company and its assets outside the Trust Account and not against
the Property or any monies in the Trust Account. 
 5. Termination. This Agreement shall terminate as follows: 

(a) If the Trustee gives written notice to the Company that it desires to resign under this Agreement, the Company shall use its reasonable
efforts to locate a successor trustee, pending which the Trustee shall continue to act in accordance with this Agreement. At such time that the Company notifies the Trustee that a successor trustee has been appointed and has agreed to become subject
to the terms of this Agreement, the Trustee shall transfer the management of the Trust Account to the successor trustee, including but not limited to the transfer of copies of the reports and statements relating to the Trust Account, whereupon this
Agreement shall terminate; provided, however, that in the event that the Company does not locate a successor trustee within ninety (90) days of receipt of the resignation notice from the Trustee, the
Trustee may submit an application to have the Property deposited with any court in the State of New York or with the United States District Court for the Southern District of New York and upon such deposit, the Trustee shall be immune from any
liability whatsoever; 
 (b) At such time that the Trustee has completed the liquidation of the Trust Account and its obligations in
accordance with the provisions of Section 1(i) hereof (which section may not be amended except as described in Section 6(c)) and distributed the Property in accordance with the provisions
of the Termination Letter, this Agreement shall terminate except with respect to Section 2(b). 
 6. Miscellaneous.

 (a) The Company and the Trustee each acknowledge that the Trustee will follow the security procedures set forth below with respect to
funds transferred from the Trust Account. The Company and the Trustee will each restrict access to confidential information relating to such security procedures to authorized persons. Each party must notify the other party immediately if it has
reason to believe unauthorized persons may have obtained access to such information, or of any change in its authorized personnel. In executing funds transfers, the Trustee will rely upon all information supplied to it by the Company, including,
account names, account numbers, and all other identifying information relating to a beneficiary, beneficiary’s bank or intermediary bank. Except for any liability arising out of the Trustee’s gross negligence, fraud or willful misconduct,
the Trustee shall not be liable for any loss, liability or expense resulting from any error in the information or transmission of the funds. 

(b) This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving effect
to conflict of laws. It may be executed in several counterparts, each one of which shall constitute an original, and together shall constitute but one instrument. 

(c) This Agreement contains the entire agreement and understanding of the parties hereto with respect to the subject matter hereof. Except
for Sections 1(i) and 1(k) hereof (each of which may not be modified, amended or deleted without the affirmative vote of a majority of the then outstanding shares of Common
Stock; provided, that no such amendment will affect any Public Stockholder who has otherwise indicated his election to redeem his shares of Common Stock in connection with a stockholder vote sought to amend this Agreement), this
Agreement or any provision hereof may be changed, amended or modified by a writing signed by each of the parties hereto. 
 (d) The Trustee
may rely conclusively on the certification from the inspector of elections referenced above and shall be relieved of all liability to any party for executing the proposed amendment in reliance thereon. The parties hereto consent to the jurisdiction
and venue of any state or federal court located in the City of New York, State of New York, for purposes of resolving any disputes hereunder. AS TO ANY CLAIM, CROSS-CLAIM OR COUNTERCLAIM IN ANY WAY RELATING TO THIS AGREEMENT, EACH PARTY WAIVES THE
RIGHT TO TRIAL BY JURY. 

 (e) Any notice, consent or request to be given in connection with any of the terms or
provisions of this Agreement shall be in writing and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or by facsimile transmission: 

if to the Trustee, to: 

Continental Stock Transfer & Trust Company 

1 State Street, 30th Floor 

New York, New York 10004 
 Attn:
Francis Wolf and Celeste Gonzalez 
 Email: fwolf@continentalstock.com 

Email: cgonzalez@continentalstock.com 

if to the Company, to: 

GigInternational1, Inc. 
 1731
Embarcadero Rd., Suite 200 
 Palo Alto, CA 94303 

Attn: Dr. Raluca Dinu 

Email: Raluca@gigcapitalglobal.com 

with a copy to: 
 DLA Piper LLP
(US) 
 555 Mission Street, Suite 2400 

San Francisco, CA 94105 
 Attn:
Jeffrey Selman 
 Fax: (415) 659-7465 

in either case, with a copy on behalf of the Representatives to: 

Oppenheimer & Co. Inc. 

85 Broad Street 
 New York, NY
10004 
 Attn: General Counsel 

Fax: 
 William Blair &
Company, L.L.C. 
 150 North Riverside Plaza 

Chicago, IL 60606 
 Attn:
General Counsel 
 Fax: (312) 551-4646 

with a copy to: 
 Ellenoff
Grossman & Schole LLP 
 1345 Avenue of the Americas 

New York, NY 10105 
 Attn:
Douglas S. Ellenoff, Esq. 
 Fax: (212) 370-7889 

(f) This Agreement may not be assigned by the Trustee without the prior consent of the Company. This Agreement may be assigned by the Company
to a wholly-owned subsidiary of the Company upon written notice to the Trustee. 
 (g) Each of the Company and the Trustee hereby represents
that it has the full right and power and has been duly authorized to enter into this Agreement and to perform its respective obligations as contemplated hereunder. The Trustee acknowledges and agrees that it shall not make any claims or proceed
against the Trust Account, including by way of set-off, and shall not be entitled to any funds in the Trust Account under any circumstance. 

 (h) This Agreement is the joint product of the Trustee and the Company and each provision
hereof has been subject to the mutual consultation, negotiation and agreement of such parties and shall not be construed for or against any party hereto. 

(i) This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts
shall together constitute one and the same instrument. Delivery of a signed counterpart of this Agreement by facsimile or electronic transmission shall constitute valid and sufficient delivery thereof. 

(j) Each of the Company and the Trustee hereby acknowledges and agrees that the Representatives, on behalf of the Underwriters, are third party
beneficiaries of this Agreement. 
 (k) Except as specified herein, no party to this Agreement may assign its rights or delegate its
obligations hereunder to any other person or entity. 
 (l) The Trustee hereby consents to the inclusion of Continental Stock
Transfer & Trust Company in the Registration Statement and other materials relating to the IPO. 
 [Signature page follows]

 IN WITNESS WHEREOF, the parties have duly executed this Investment Management Trust
Agreement as of the date first written above. 
  

			
	 CONTINENTAL STOCK TRANSFER

& TRUST COMPANY, as Trustee

		
	By:	 	  

	Name:	 	  

	Title:	 	  

	
	GIGINTERNATIONAL1, INC.
		
	By:	 	  

	Name:	 	Raluca Dinu
	Title:	 	Chief Executive Officer, President and Secretary

 Signature page to Investment Management Trust Agreement 

 SCHEDULE A 
  

							
	 Fee Item
	  	 Time and method of payment
	  	Amount	 
	 Initial set-up fee.
	  	Initial closing of IPO by wire transfer.	  	$	3,500	 
	 Trustee administration fee
	  	Payable annually. First year fee payable, at initial closing of IPO by wire transfer, thereafter by wire transfer or check.	  	$	10,000	 
	 Transaction processing fee for disbursements to Company
under Sections 1(i) and 1(j)
	  	Deduction by Trustee from accumulated income following disbursement made to Company under Section 1	  	$	250	 
	 Paying Agent services as required pursuant
to Section 1(i) and 1(k)
	  	Billed to Company upon delivery of service pursuant to Section 1(i) and 1(k)	  	 	Prevailing rates	 

 EXHIBIT A 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street Plaza, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No. [•] Termination Letter 

Ladies and Gentlemen: 
 Pursuant
to Section 1(i) of the Investment Management Trust Agreement between GigInternational1, Inc., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company
(“Trustee”), dated as of [•], 2021 (“Trust Agreement”), this is to advise you that the Company has entered into an agreement with
                 (“Target Business”) to consummate a business combination with Target Business (“Business Combination”)
on or about [insert date]. The Company shall notify you at least seventy-two (72) hours in advance of the actual date fixed for the consummation of the
Business Combination (“Consummation Date”). Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 

In accordance with the terms of the Trust Agreement, we hereby authorize you to commence to liquidate all of the assets of the Trust Account
on [insert date], such that, on the Consummation Date, all of the funds held in the Trust Account will be immediately available for transfer to the account or accounts that the Company shall direct on the Consummation Date. It is
acknowledged and agreed that while the funds are on deposit in the Trust Account awaiting such transfer, the Company will not earn any interest or dividends. 

On the Consummation Date (i) counsel for the Company shall deliver to you written notification that the Business Combination has been
consummated, or will be consummated concurrently with your transfer of funds to the accounts directed by the Company (the “Notification”) and (ii) the Company shall deliver to you (a) a certificate (the “ (the
“Vote Verification Certificate”) of its Chief Executive Officer, which verifies either that (i) the Business Combination has been approved by a vote of the Company’s stockholders or (ii) no vote of the
Company’s stockholders for the approval of the Business Combination is required and none has been held, and (b) joint written instruction signed by the Company and the Representatives with respect to the transfer of the funds held in the
Trust Account, including payment of amounts owed to Public Stockholders who have properly exercised their redemption rights (the “Instruction Letter”). You are hereby directed and authorized to transfer the funds held in the
Trust Account immediately upon your receipt of the Notification, the Vote Verification Certificate and the Instruction Letter, in accordance with the terms of the Instruction Letter. In the event that certain deposits held in the Trust Account may
not be liquidated by the Consummation Date without penalty, you will notify the Company in writing of the same and the Company shall direct you as to whether such funds should remain in the Trust Account and be distributed after the Consummation
Date to the Company. Upon the distribution of all the funds, your obligations under the Trust Agreement shall be terminated. 
 In the event
that the Business Combination is not consummated on the Consummation Date described in the notice thereof and we have not notified you on or before the original Consummation Date of a new Consummation Date, then upon receipt by you of written
instructions from us, the funds held in the Trust Account shall be reinvested as provided in Section 1(c) of the Trust Agreement on the business day immediately following such original Consummation Date or
as soon thereafter as possible. 

 
			
	Very truly yours,
	
	GIGINTERNATIONAL1, INC.
		
	By:	 	
                     

	Name:	 	
	Title:	 	

  

			
	AGREED TO AND ACKNOWLEDGED BY:
	
	OPPENHEIMER & CO. INC.
		
	By:	 	
                     

	Name:	 	
	Title:	 	
	
	WILLIAM BLAIR & COMPANY, L.L.C.
		
	By:	 	  

	Name:	 	
	Title:	 	

 EXHIBIT B 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street Plaza, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No. [•] Termination Letter 

Ladies and Gentlemen: 
 Pursuant
to Section 1(i) of the Investment Management Trust Agreement between GigInternational1, Inc., a Delaware corporation (the “Company”) and Continental Stock Transfer & Trust Company
(“Trustee”), dated as of [•], 2021 (“Trust Agreement”), this is to advise you that the Company has been unable to effect a Business Combination within the time frame specified in the
Company’s Amended and Restated Certificate of Incorporation, as described in the Company’s prospectus relating to the IPO. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 

In accordance with the terms of the Trust Agreement, we hereby authorize you to liquidate all of the assets in the Trust Account on [•],
20[    ] and to keep the total proceeds thereof in the Trust Account to await distribution to the Public Stockholders. The Company has selected [•], 20[    ], as the effective date for the purpose of
determining when the Public Stockholders will be entitled to receive their share of the liquidation proceeds. You agree to be the Paying Agent of record and, in your separate capacity as Paying Agent, agree to distribute said funds directly to the
Public Stockholders in accordance with the terms of the Trust Agreement and the Amended and Restated Certificate of Incorporation of the Company. Upon the distribution of all the funds, your obligations under the Trust Agreement shall be terminated.

  

			
	Very truly yours,
	
	GIGINTERNATIONAL1, INC.
		
	By:	 	
                 

	Name:	 	
	Title:	 	

  

			
	cc:	  	 Oppenheimer & Co. Inc.
 William
Blair & Company, L.L.C.

 EXHIBIT C 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street Plaza, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No. [•] Withdrawal Instruction 

Ladies and Gentlemen: 
 Pursuant
to Section 1(j) of the Investment Management Trust Agreement between GigInternational1, Inc., a Delaware corporation (the “Company”) and Continental Stock Transfer & Trust Company
(“Trustee”), dated as of [•], 2021 (“Trust Agreement”), the Company hereby requests that you deliver to the Company $[•] of the interest income earned on the Property as of the date
hereof. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 
 The Company needs such
funds to pay for the tax obligations as set forth on the attached tax return or tax statement. In accordance with the terms of the Trust Agreement, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your
receipt of this letter to the Company’s operating account at: 
 [WIRE INSTRUCTION INFORMATION] 

 

			
	 Very truly yours,

	
	 GIGINTERNATIONAL1, INC.

 

	By:	 	
                     
        

	 Name:
	 	
	 Title:
	 	

  

			
	cc:	  	 Oppenheimer & Co. Inc.
 William
Blair & Company, L.L.C.

 EXHIBIT D 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street Plaza, 30th Floor 

New York, New York 10004 
 Attn: Francis Wolf and Celeste Gonzalez

 Re: Trust Account No. [•] Stockholder Redemption Withdrawal Instruction 

Ladies and Gentlemen: 
 Pursuant
to Section 1(k) of the Investment Management Trust Agreement between GigInternational1, Inc., a Delaware corporation (the “Company”) and Continental Stock Transfer & Trust Company
(“Trustee”), dated as of [•], 2021 (“Trust Agreement”), the Company hereby requests that you deliver
$[                 ] of the principal and interest income earned on the Property as of the date hereof to a segregated account held by you for further transfer to the
institutions representing the Public Stockholders who have properly elected to have their shares of Public Common Stock redeemed by the Company as described below. Capitalized terms used but not defined herein shall have the meanings set forth in
the Trust Agreement. 
 The Company needs such funds to pay the Public Stockholders who have properly elected to have their shares of Public
Common Stock redeemed by the Company in connection with a stockholder vote to approve an amendment to the Company’s Amended and Restated Certificate of Incorporation that would affect the substance or timing of the Company’s obligation to
redeem 100% of the shares of Public Common Stock if the Company has not consummated an initial Business Combination within such time as is described in the Company’s Amended and Restated Certificate of Incorporation, or that would otherwise
affect provisions thereof relating to the Company’s pre-initial Business Combination activity or related stockholder rights. As such, you are hereby directed and authorized to transfer (via
wire transfer) such funds promptly upon your receipt of this letter to a segregated account held by you on behalf of such Public Stockholders. 
  

			
	 Very truly yours,

	
	 GIGINTERNATIONAL1, INC.

		
	By:	 	
                     
    

	 Name:
	 	
	 Title:
	 	

  

			
	cc:	  	 Oppenheimer & Co. Inc.
 William
Blair & Company, L.L.C.

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