Grid Dynamics (NASDAQ: GDYN) CEO discloses 10,000-share stock sale

Rhea-AI Filing Summary

Grid Dynamics Holdings, Inc. insider activity shows the company’s chief executive officer and director reported selling 10,000 shares of common stock on December 9, 2025. The sale, coded as an open-market sale, was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 4, 2025.

The weighted average sale price was $9.7 per share, with individual trade prices ranging from $9.57 to $9.80. Following this transaction, the reporting person beneficially owns 2,831,378 shares directly and an additional 12,860 shares indirectly through a spouse.

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).

X

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^*

Livschitz Leonard

(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
X	Officer (give title below)		Other (specify below)
	CHIEF EXECUTIVE OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
12/09/2025

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	12/09/2025		S		10,000(1)	D	$9.7(2)	2,831,378	D
Common Stock								12,860	I	See footnote(3)

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. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 4, 2025.

2. This transaction was executed in multiple trades at prices ranging from $9.57 to $9.80. 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

3. The shares are held by the Reporting Person's spouse.

	/s/Anil Doradla, by power of attorney	12/11/2025
	** 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.

FAQ

What insider transaction did Grid Dynamics (GDYN) report on December 9, 2025?

The chief executive officer and director of Grid Dynamics Holdings, Inc. reported an open-market sale of 10,000 shares of common stock on December 9, 2025, as shown in the Form 4.

How many Grid Dynamics (GDYN) shares did the CEO sell and at what price?

The reporting person sold 10,000 shares of Grid Dynamics common stock at a weighted average price of $9.7 per share, with individual trades executed between $9.57 and $9.80.

Was the GDYN CEO’s stock sale made under a Rule 10b5-1 plan?

Yes. The 10,000-share sale was made pursuant to a Rule 10b5-1 trading plan that the reporting person adopted on August 4, 2025, as noted in the footnotes.

How many Grid Dynamics (GDYN) shares does the reporting person still own after this sale?

After the reported transaction, the reporting person beneficially owns 2,831,378 shares of common stock directly and 12,860 shares indirectly, which are held by the reporting person’s spouse.

Who holds the indirectly owned Grid Dynamics (GDYN) shares reported on the Form 4?

The Form 4 explains that the 12,860 indirectly owned shares of Grid Dynamics common stock are held by the reporting person’s spouse.

What does a Rule 10b5-1 trading plan signify for this GDYN insider sale?

The filing states that the 10,000-share sale was made under a Rule 10b5-1 trading plan, meaning the trades followed a pre-established written plan for selling the issuer’s equity securities.