[Form 4] GRID DYNAMICS HOLDINGS, INC. Insider Trading Activity

Grid Dynamics Holdings, Inc. director reported a small stock sale.

Rhea-AI Filing Summary

Grid Dynamics Holdings, Inc. director reported a small stock sale. On 12/15/2025, the reporting person sold 3,000 shares of common stock in open-market transactions at a weighted average price of $9.75 per share. The trades were executed at prices ranging from $9.72 to $9.79, and the average price is reported.

After this transaction, the director beneficially owns 92,515 shares of Grid Dynamics common stock, held directly. The filing is made by a single reporting person in the capacity of director of the company.

Insider Trade Summary

Net Seller: 3,000 shares

Net Sell 1 txn

Insider Zhang Shuo

Role Director

Sold 3,000 shs ($29K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,000	$9.75	$29K

Holdings After Transaction: Common Stock — 92,515 shares (Direct)

Footnotes (1)

1. F1. This transaction was executed in multiple trades at prices ranging from $9.72 to $9.79. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Grid Dynamics (GDYN) report in this filing?

A director of Grid Dynamics Holdings, Inc. reported selling 3,000 shares of the company’s common stock in an open-market transaction.

On what date did the Grid Dynamics (GDYN) director sell shares?

The reported sale took place on 12/15/2025.

At what price were the Grid Dynamics (GDYN) shares sold in this insider trade?

The shares were sold at a weighted average price of $9.75 per share, with individual trades executed between $9.72 and $9.79.

How many Grid Dynamics (GDYN) shares does the director own after this sale?

Following the reported transaction, the director beneficially owns 92,515 shares of Grid Dynamics common stock.

What is the reporting person’s relationship to Grid Dynamics (GDYN)?

The reporting person is a director of Grid Dynamics Holdings, Inc..

Was this Grid Dynamics (GDYN) Form 4 filed for multiple insiders or a single person?

The document indicates it is a Form filed by one reporting person, not by a group.

How were the sale prices for the Grid Dynamics (GDYN) insider trade distributed?

The transaction was executed in multiple trades at prices ranging from $9.72 to $9.79, with the reported $9.75 reflecting the weighted average sale price.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 12/17/2025 - 04:09 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Zhang Shuo

(Last) (First) (Middle)

C/O GRID DYNAMICS HOLDINGS, INC.

6101 BOLLINGER CANYON ROAD, SUITE 465

(Street)

SAN RAMON CA 94583

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GRID DYNAMICS HOLDINGS, INC. [ GDYN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/15/2025		S		3,000	D	$9.75(1)	92,515	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction was executed in multiple trades at prices ranging from $9.72 to $9.79. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price.

	/s/ Anil Doradla, by power of attorney	12/17/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.