Grid Dynamics (GDYN) COO stock withheld to cover RSU tax obligations

Rhea-AI Filing Summary

GRID DYNAMICS HOLDINGS, INC. reported an insider equity-related tax event involving its Chief Operating Officer, Yury Gryzlov. A Form 4 shows that 632 shares of common stock were withheld by the company at $6.47 per share to satisfy tax obligations tied to the net settlement of restricted stock units granted on February 14, 2025. These shares were not sold in the open market but used to cover withholding and remittance requirements. Following this transaction, Gryzlov directly holds 519,850 shares of Grid Dynamics common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Gryzlov Yury

Role CHIEF OPERATING OFFICER

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	632	$6.47	$4K

Holdings After Transaction: Common Stock — 519,850 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares withheld for taxes: 632 shares Withholding price: $6.47 per share Shares held after transaction: 519,850 shares +2 more

5 metrics

Shares withheld for taxes 632 shares Tax withholding disposition of common stock

Withholding price $6.47 per share Value used for tax-withholding shares

Shares held after transaction 519,850 shares Direct GDYN holdings by COO after Form 4 event

Transaction date May 14, 2026 Date of tax-withholding disposition

RSU grant date February 14, 2025 Date RSUs underlying this withholding were granted

Key Terms

restricted stock units, net settlement, tax withholding, Form 4, +1 more

5 terms

restricted stock units financial

"in connection with the net settlement of restricted stock units granted to the Reporting Person on February 14, 2025"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

net settlement financial

"to satisfy tax withholding and remittance obligations in connection with the net settlement of restricted stock units"

tax withholding financial

"shares that have been withheld by the Issuer to satisfy tax withholding and remittance obligations"

Tax withholding is the practice of taking a portion of a payment—such as wages, dividends, or sale proceeds—before it reaches the recipient and sending that portion to the tax authority as an advance on the recipient’s eventual tax bill. For investors it matters because withholding reduces immediate cash received and affects after‑tax returns, estimated tax payments, and whether you may owe more or receive a refund when taxes are finally calculated, like having a small automatic savings set aside for your tax bill.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 Insider Transactions: What Each Field Means →

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^*

Gryzlov Yury

(Last) (First) (Middle)

C/O GRID DYNAMICS HOLDINGS, INC.

6101 BOLLINGER CANYON ROAD, SUITE 465

(Street)

SAN RAMON CALIFORNIA 94583

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

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

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

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

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	05/14/2026		F		632(1)	D	$6.47	519,850	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. Represents shares that have been withheld by the Issuer to satisfy tax withholding and remittance obligations in connection with the net settlement of restricted stock units granted to the Reporting Person on February 14, 2025.

Remarks:

	/s/Anil Doradla, by power of attorney	05/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What does the latest Form 4 for GRID DYNAMICS (GDYN) disclose?

The Form 4 reports that COO Yury Gryzlov had 632 Grid Dynamics common shares withheld at $6.47 each to cover tax obligations from vested restricted stock units, while retaining direct ownership of 519,850 shares after the transaction.

Did the GDYN COO sell shares or were they withheld for taxes?

The shares were withheld for taxes, not sold on the market. Grid Dynamics retained 632 common shares to satisfy tax withholding and remittance obligations related to the net settlement of previously granted restricted stock units.

How many GRID DYNAMICS (GDYN) shares does the COO hold after this Form 4?

After the tax-withholding transaction, COO Yury Gryzlov directly holds 519,850 shares of Grid Dynamics common stock. Only 632 shares were withheld by the issuer for taxes tied to the restricted stock unit net settlement.

What triggered the tax withholding reported in the GDYN Form 4?

The tax withholding arose from the net settlement of restricted stock units granted to Yury Gryzlov on February 14, 2025. When those RSUs vested, 632 shares were withheld by Grid Dynamics to cover associated tax and remittance obligations.

What was the price used for the GDYN COO tax-withholding shares?

The 632 Grid Dynamics common shares withheld for tax purposes were valued at $6.47 per share. This price is used in the Form 4 to calculate the value of the shares applied toward the tax withholding obligation on the vested restricted stock units.