Grid Dynamics COO covers taxes with 632 shares

GRID DYNAMICS HOLDINGS, INC.

Rhea-AI Filing Summary

GRID DYNAMICS HOLDINGS, INC. (GDYN) reported an insider tax-related share disposition by Chief Operating Officer Yury Gryzlov. On 2026-08-14, 632 shares of common stock were withheld at $7.75 per share to satisfy tax withholding and remittance obligations in connection with the net settlement of restricted stock units. Following this withholding transaction, Gryzlov directly held 507,455 shares of GDYN common stock.

Insider Trade Summary

Tax Withholding: 632 shares

Tax Withholding 1 txn

Insider Gryzlov Yury

Role CHIEF OPERATING OFFICER

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	632	$7.75	$5K

Holdings After Transaction: Common Stock — 507,455 shares (Direct)

Footnotes (1)

1. F1. Represents shares that have been withheld by the Issuer to satisfy tax withholding and remittance obligations in connection with net settlement of restricted stock units.

Key Figures

Shares withheld for taxes: 632 shares Per-share value for withholding: $7.75 per share Shares owned after transaction: 507,455 shares +2 more

5 metrics

Shares withheld for taxes 632 shares Common stock withheld on 2026-08-14 to satisfy tax obligations

Per-share value for withholding $7.75 per share Value applied to the 632 withheld shares

Shares owned after transaction 507,455 shares Directly held GDYN common stock after the withholding event

Transaction code Code F Payment of tax liability by delivering or withholding securities

Shares used for tax or exercise payments (summary) 632 shares Exercise price or tax liability-related shares in transaction summary

Key Terms

restricted stock units, net settlement, tax withholding and remittance obligations, beneficial ownership

4 terms

restricted stock units financial

"in connection with net settlement of restricted stock units"

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

"in connection with net settlement of restricted stock units"

tax withholding and remittance obligations financial

"to satisfy tax withholding and remittance obligations in connection"

beneficial ownership financial

"directly held 507,455 shares of GDYN common stock"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

What insider transaction did GDYN's COO Yury Gryzlov report on this Form 4?

Yury Gryzlov reported a tax-related disposition of 632 GDYN shares. The shares were withheld by the company to satisfy tax withholding and remittance obligations tied to the net settlement of restricted stock units.

How many GRID DYNAMICS (GDYN) shares were involved in Yury Gryzlov’s latest Form 4?

The Form 4 reports 632 GDYN common shares withheld. These shares were used to cover tax withholding obligations arising from the net settlement of restricted stock units rather than being sold in an open-market transaction.

At what price were the GDYN shares valued for the tax withholding on Yury Gryzlov’s Form 4?

The 632 GDYN shares withheld for taxes were valued at $7.75 per share. This price is used to calculate the value of shares applied toward Gryzlov’s tax withholding and remittance obligations on the restricted stock unit settlement.

How many GRID DYNAMICS (GDYN) shares does Yury Gryzlov hold after this Form 4 transaction?

After the tax-withholding transaction, Yury Gryzlov directly held 507,455 GDYN common shares. This reflects his reported beneficial ownership following the withholding of 632 shares to satisfy tax obligations on restricted stock units.

Was Yury Gryzlov’s GDYN Form 4 transaction executed under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed. The transaction is instead described as shares withheld by the issuer to satisfy tax withholding and remittance obligations for net-settled restricted stock units.

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

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Accepted by SEC EDGAR 08/17/2026 - 06:14 PM EDT 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^*

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)
08/14/2026

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	08/14/2026		F		632(1)	D	$7.75	507,455	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 net settlement of restricted stock units.

Remarks:

	/s/Anil Doradla, by power of attorney	08/17/2026
	** 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)