Document:

exhibit1078-mod26to2012a

EXHIBIT 10.78  Certain identified information has been excluded from the exhibit because it is both (i) not material and (ii) would  likely cause competitive harm to the Company, if publicly disclosed. Double asterisks denote omissions.      AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE    PAGE OF PAGES  1 2  2. AMENDMENT/MODIFICATION NO.    P000026  3.  EFFECTIVE DATE  See Block 16C  4. REQUISITION/PURCHASE  REQ. NO.   5. PROJECT NO. (If applicable)  6. ISSUED BY CODE ASPR/BARDA 7. ADMINISTERED BY (If other than Item 6)     CODE  ASPR/BARDA02  ASPR-BARDA  200 Independence Ave., S.W.  Room 640-G  Washington DC 20201  ASPR-BARDA  330 Independence Ave., SW, Rm G640  Washington DC 20201  8.  NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)  (x) 9A. AMENDMENT OF SOLICITATION NO.  EMERGENT MANUFACTURING OPERATIONS BALTIMORE LLC  EMERGENT MANUFACTURING OPERATIONS B  5901 E LOMBARD ST  BALTIMORE MD 212246824      9B. DATED (SEE ITEM 11)     x 10A. MODIFICATION OF CONTRACT/ORDER NO.   HHSO100201200004I   10B. DATED (SEE ITEM 13)  CODE    1410445 FACILITY CODE     06/15/2012  11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS   The above numbered solicitation is amended as set forth in Item 14.  The hour and date specified for receipt of Offers  is extended,  is not extended.   Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods: (a) By  completing Items 8 and 15, and returning _________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;  or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers.  FAILURE OF YOUR  ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY  RESULT IN REJECTION OF YOUR OFFER.  If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or  electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the  opening hour and date specified.  12. ACCOUNTING AND APPROPRIATION DATA (If required) Net Increase: $[**]  See Schedule   13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.   IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.  CHECK ONE  A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE  CONTRACT ORDER NO. IN ITEM 10A.     B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in  paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).    C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:    FAR. 43.103(A)(3) Bilaterial mutual agreement of both parties    D. OTHER (Specify type of modification and authority)      E. IMPORTANT:  Contractor    is not,  is required to sign this document and return ____1____ copies to the issuing office.  14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)  Tax ID Number: [**]  DUNS Number:  [**]  The purpose of this modification is to include a re-submission date for the Plan for Achieving the Pandemic Influenza Objectives originally  submitted [**].  The new submission date for this plan has changed to [**].  The Contracting Officer Representative will review and recommend  any changes to Emergent’s submission by [**].  In Addition, the new submission final deadline date with all revisions will be [**].  Continued ...  Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.  15A. NAME AND TITLE OF SIGNER (Type or print).  Sean Kirk                                             EVP, mfg and tech ops  16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)  CAROL C. LAVRICH  15B. CONTRACTOR/OFFEROR    /s/ SEAN KIRK   (Signature of person authorized to sign)  15C. DATE  SIGNED  Nov 2, 2020   16B. UNITED STATES OF AMERICA    /s/ Carol C. Lavrich   (Signature of Contracting Officer)  16C. DATE SIGNED  11/02/2020    

 

  CONTINUATION  SHEET  REFERENCE NO. OF DOCUMENT BEING CONTINUED  HHSO100201200004I/P00026  PAGE OF   2 2  NAME OF OFFEROR OR CONTRACTOR  EMERGENT MANUFACTURING OPERATIONS BALTIMORE LLC 1410445  ITEM No.  (A)  SUPPLIES/SERVICES  (B)  QUANTIT Y  (C)  UNI T  (D)  UNIT  PRICE  (E)  AMOUNT  (F)   As a result of the modification, the Period of  Performance (POP) will be from June 15,  2012 to [**].    Period of Performance:  06/15/2012 to [**]Exhibit
10.1

 

WARRANT
EXCHANGE AGREEMENT

 

THIS
WARRANT EXCHANGE AGREEMENT (this “Agreement”), dated as of February 17, 2021, is by and between Grid Dynamics
Holdings, Inc., a Delaware corporation, f/k/a ChaSerg Technology Acquisition Corp. (the “Company”), and the
holder named on the signature page hereto (the “Holder”).

 

WHEREAS,
the Holder is the record and beneficial owner of public Warrants to purchase shares of the Company’s common stock, par
value $0.0001 per share (“Common Stock”), at an exercise price of $11.50 per share (the “Warrants”),
which were originally issued by the Company in its registered public offering of units consisting of Common Stock and Warrants
made pursuant to the Company’s prospectus filed with the Securities and Exchange Commission (the “SEC”)
pursuant to Rule 424(b)(4) on October 4, 2018 (the “Registered Offering”);

 

WHEREAS,
as of the date hereof, Holder is the owner of the Warrants set forth on the Holder’s signature page hereto;

 

WHEREAS,
on the date hereof, there are issued and outstanding Warrants to purchase an aggregate of 10,999,994 shares of Common Stock; and

 

WHEREAS,
the Company and the Holder desire to cancel and retire the Warrants in exchange (the “Exchange”) for shares
of Common Stock (the Exchange Shares”) at a ratio of 0.3480 of a share of Common Stock per Warrant (without payment
of the exercise price therefor) under the terms of this Agreement with the Holder, in reliance upon the exemption from registration
provided by Section 3(a)(9) of the Securities Act of 1933, as amended (the “Securities Act”).

 

NOW,
THEREFORE, it is hereby agreed as follows:

 

1.
Warrant Exchange. Pursuant to Section 3(a)(9) of the Securities Act, the Holder hereby agrees to convey, assign and transfer
the Holder’s Warrants to the Company, in exchange for which the Company agrees to issue the Exchange Shares to the Holder.
No later than the second business day after the execution and delivery of this Agreement by the Company, in connection with the
Exchange, the Company shall cause its transfer agent to deliver to the Holder the Exchange Shares by electronic delivery at the
applicable balance account at the Depositary Trust Company (“DTC”) in accordance with the instructions provided
to the Company in writing by the Holder on the signature page of this Agreement. Effective upon the Holder’s receipt of
such Exchange Shares, all of the Warrants held by the Holder will be deemed cancelled and all rights of the Holder thereunder
will terminate and be deemed waived. As soon as commercially practicable following the date hereof, the Holder shall return in
physical form or through book-entry transfer all certificates or book-entry notations representing the Warrants to be exchanged
for the Exchange Shares.

 

2.
Representations, Warranties and Covenants of the Company. The Company hereby represents, warrants and covenants to the
Holder as follows:

 

2.1
The Company has full power and authority and, assuming the accuracy of the representations of the Holder contained herein, has
taken all requisite action on the part of the Company, its officers, directors and stockholders necessary for (i) the authorization,
execution and delivery of this Agreement, (ii) the authorization of the performance of all obligations of the Company hereunder
or thereunder, and (iii) the issuance and delivery of the shares of Common Stock issuable upon the exchange of the Holder’s
Warrants pursuant to this Agreement.

 

     

     

    

 

2.2
This Agreement constitutes the legal, valid and binding obligation of the Company, enforceable against the Company in accordance
with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general
applicability, relating to or affecting creditors’ rights generally and to general equitable principles and except as rights
to indemnity and contribution may be limited by state or federal securities laws or public policy.

 

2.3
The consummation of this Agreement, including the issuance of the Exchange Shares, will not obligate the Company to issue shares
of Common Stock or other securities to any other person or entity and will not result in the adjustment of the exercise, conversion,
exchange or reset price of any outstanding security.

 

2.4
Upon the due exchange of the Holder’s Warrants pursuant to this Agreement, the Exchange Shares will be validly issued, fully
paid and non-assessable free and clear of all Encumbrances (as defined below), except for restrictions on transfer imposed by
applicable securities laws and except for those created by the Holder. The Company has reserved a sufficient number of shares
of Common Stock for issuance upon the exchange of the Warrants pursuant to this Agreement.

 

2.5
Assuming the accuracy of the representations of the Holder contained herein, the authorization, execution, delivery and performance
of this Agreement require no consent of, action by or in respect of, or filing with, any person, entity, governmental body, agency,
or official other than filings that have been made pursuant to applicable state securities laws and post-sale filings pursuant
to applicable state and federal securities laws which the Company undertakes to file within the applicable time periods.

 

2.6
The authorization, execution, delivery and performance of this Agreement, and the authorization, issuance and sale of the Exchange
Shares upon the due exchange of the Holder’s Warrants pursuant to this Agreement will not (i) conflict with or result in
a breach or violation of (a) any of the terms and provisions of, or constitute a default under the Company’s Certificate
of Incorporation or the Company’s By-laws, both as in effect on the date hereof, or (b) any statute, rule, regulation or
order of any governmental agency or body or any court, domestic or foreign, having jurisdiction over the Company, any subsidiary
or any of their respective assets or properties, or (ii) conflict with, or constitute a default (or an event that with notice
or lapse of time or both would become a default) under, result in the creation of any Encumbrance or other adverse claim upon
any of the properties or assets of the Company or any subsidiary or give to others any rights of termination, amendment, acceleration
or cancellation (with or without notice, lapse of time or both) of, any material contract of the Company or any subsidiary.

 

2.7
The Exchange Shares have been duly authorized and, assuming the accuracy of the representations of the Holder contained herein,
will be validly issued, fully paid and nonassessable. Assuming the Warrants were purchased by the Holder in or following the Company’s
Registered Offering and the Holder is not an “Affiliate” (as such term is defined in Rule 405 promulgated under
the Securities Act) of the Company and will not be an Affiliate of the Company upon the consummation of the Exchange, the Exchange
Shares will be issued to the Holder without legend and will be freely tradable by the Holder.

 

    -2-

     

    

 

3.
Representations, Warranties and Covenants of the Holder. The Holder hereby represents and warrants to the Company as follows:

 

3.1
If the Holder is an entity, the Holder is a validly existing corporation, limited partnership or limited liability company and
has all requisite corporate, partnership or limited liability company power and authority to enter into this Agreement and to
perform its obligations hereunder. If the Holder is an individual, the Holder is legally competent and has the legal capacity
to enter into this Agreement and to perform his or her obligations hereunder.

 

3.2
The execution, delivery and performance by the Holder of this Agreement have been duly authorized and this Agreement constitutes
the valid and legally binding obligation of the Holder, enforceable against the Holder in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability, relating to
or affecting creditors’ rights generally.

 

3.3
All investment representations and warranties previously made by the Holder to the Company in connection with the Holder’s
acquisition of the Warrants are hereby confirmed with respect to the Warrants and the Exchange Shares.

 

3.4
The Holder owns the Holder’s Warrants beneficially and of record, free and clear of any liens, pledges, options, security
interests, claims, third party rights, charges or any other restrictions or encumbrances of any nature whatsoever (collectively,
“Encumbrances”), other than restrictions upon transferability of the Warrants arising under applicable securities
laws. There are no agreements (i) granting any option, warrant or right of first refusal with respect to the Warrants to any person
or entity, (ii) restricting the right of the Holder to exchange the Warrants in accordance with the terms of this Agreement, or
(iii) restricting any other right of the Holder with respect to the Warrants. Except as provided below, the Holder shall not (i)
transfer, or consent to any transfer of, any or all of the Warrants or any interest therein, or create or permit to exist any
Encumbrance on the Warrants, (ii) enter into any contract, option or other agreement or understanding with respect to any transfer
of any or all of such Warrants, or (iii) take any other action that would in any way restrict, limit or interfere with the performance
of its obligations hereunder. The Holder hereby acknowledges that the Company shall be entitled to refuse to effect the transfer
of any Warrants not in compliance with the terms of this Agreement.

 

3.5
Neither the Holder nor anyone acting on behalf of the Holder has received any commission or remuneration directly or indirectly
in connection with or in order to solicit or facilitate the Exchange. The Holder understands that the Exchange contemplated hereby
is intended to be exempt from registration by virtue of Section 3(a)(9) of the Securities Act. The Holder understands that the
Company is relying upon the truth and accuracy of the representations, warranties, agreements, acknowledgments and understandings
of the Holder set forth herein for purposes of qualifying for the exemption under Section 3(a)(9) of the Securities Act as well
as qualifying for exemptions under applicable state securities laws.

 

    -3-

     

    

 

3.6
The Holder has, in connection with its decision to acquire the Exchange Shares, relied with respect to the Company and its affairs
solely upon the Company’s filings with the SEC and the representations and warranties of the Company contained herein and
disclaims reliance on any other representations and warranties or the completeness thereof. The Holder understands and acknowledges
that the Company is in possession of information about the Company and its securities (which may include material non-public information)
that may or may not be material or superior to information available to the Holder, and the Holder has specifically requested
that it not be provided with any such information. The Holder acknowledges that, in the event the Holder completes the Exchange,
it is doing so without any reliance on the Company. The Holder and the Company understand and acknowledge that neither party would
enter into this Agreement in the absence of the representations and warranties set forth in this paragraph, and that these representations
and warranties are a fundamental inducement to the parties in entering into this Agreement. The Holder hereby waives any claim,
or potential claim, it has or may have against the Company relating to the Company’s possession of material non-public information.

 

3.7
The Holder understands that nothing in this Agreement or in connection with the exchange of the Warrants and issuance and acquisition
of the Exchange Shares constitutes legal, tax or investment advice. The Holder has consulted such legal, tax and investment advisors
as it, in its sole discretion, has deemed necessary or appropriate in connection with its acquisition of the Exchange Shares.
With respect to such matters, the Holder relies solely on such advisors and not on any statements or representations of the Company
or any of its agents, written or oral. The Holder understands that it (and not the Company) shall be responsible for its own tax
liability that may arise as a result of this investment or the transactions contemplated by this Agreement.

 

3.8
The Holder is not, in the past three years has not been, and upon consummation of the Exchange contemplated herein will not be,
an “interested stockholder” of the Company as defined in Section 203 of the Delaware General Corporation Law.

 

4.
Issuance of Form 8-K. On or before 9:00 a.m. (New York City time) on Monday, February 22, 2021, the Company shall file
a Current Report on Form 8-K with the Securities and Exchange Commission disclosing all material terms of the transaction contemplated
hereunder (“8-K Filing”). From and after the issuance of the 8-K Filing, the Company represents to the Holder
that it shall not be in possession of any material, nonpublic information received from the Company or any of its officers, directors,
employees or agents, that is not disclosed in the 8-K Filing. In addition, effective upon the filing of the 8-K Filing, the Company
acknowledges and agrees that any and all confidentiality or similar obligations under any agreement, whether written or oral,
between the Company or any of its officers, directors, employees or agents, on the one hand, and the Holder or any of its affiliates,
on the other hand, related to the transactions contemplated hereby or with respect to information shared in connection herewith
shall terminate.

 

    -4-

     

    

 

5.
Counterparts. This Agreement may be signed in two or more counterparts, each of which shall be an original, with the same
effect as if the signatures thereto and hereto were upon the same instrument. Counterparts may be delivered via facsimile, electronic
mail (including any electronic signature complying with the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act
or other applicable law) or other transmission method, and any counterpart so delivered shall be deemed to have been duly and
validly delivered and be valid and effective for all purposes.

 

6.
Entire Agreement; Amendment. This Agreement constitutes the entire agreement between the Company and the Holder regarding
the subject matter hereof and supersedes all prior agreements and understandings, oral or written, between them with respect to
the subject matter hereof. This Agreement may only be amended by an agreement in writing executed by all of the parties hereto.

 

7.
Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware without
regard to conflicts of laws principles that would require the application of any other law.

 

[Signatures
follow on next pages]

 

    -5-

     

    

 

IN
WITNESS WHEREOF, the Holder and the Company have executed this Agreement as of the date set forth on the first page of this
Agreement.

 

	 	GRID DYNAMICS HOLDINGS, INC.
	 	 	 	 
	 	By:	/s/
    Anil Doradla
	 	 	Name: 	Anil Doradla
	 	 	Title:	Chief Financial Officer

 

     

     

    

 

	 	NAME
    OF HOLDER:
	 	 
	 	RIVERVIEW
    GROUP LLC
	 	 
	 	By: INTEGRATED
    HOLDING GROUP LP, ITS MANAGING MEMBER
	 	 
	 	By: MILLENNIUM
    MANAGEMENT LLC, ITS GENERAL PARTNER
	 	 
	 	By:	/s/ Vijay
    Pant
	 	Name:	Vijay Pant
	 	Title	Treasurer

	 	 Address:	 
	 	 	 

 

	 	E-Mail:	 

 

	 	DWAC INSTRUCTIONS
	 	 
	 	Broker Name and DTC Number:
	 	 
	 	 
	 	 
	 	 

 

	 	Account Number at DTC Participant

	 	(if applicable):	 
	 	 	 

 

Number
of Warrant shares issuable upon exchange of Warrants:*

 

6,383,269

 

Number
of Exchange Shares:†

 

2,221,378

 

 

		*	Without
regard to any limitations on exercise set forth in the Warrants.

		†	Fractional
shares to be rounded up to the nearest whole number of Exchange Shares to be issued to the Holder.

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