Grid Dynamics (GDYN) COO sells stock under 10b5-1 plan

Q: What insider transaction did GDYN report for COO Yury Gryzlov?

GDYN reported that COO Yury Gryzlov sold 467 shares of common stock at $7.53 per share on August 18, 2026, under a Rule 10b5-1 trading plan adopted November 13, 2025.

Q: How many GDYN shares did Yury Gryzlov sell and at what price?

Yury Gryzlov sold 467 GDYN shares at a price of $7.53 per share . The sale was reported as a non-derivative transaction in common stock and classified as a sale in an open-market or private transaction.

Q: How many GDYN shares does Yury Gryzlov own after the reported sale?

After the sale, Yury Gryzlov directly holds 506,988 shares of GDYN common stock. This figure reflects his position immediately following the August 18, 2026 transaction of 467 shares reported in the Form 4 filing.

Q: Was Yury Gryzlov’s GDYN stock sale under a Rule 10b5-1 plan?

Yes, the 467-share sale was executed under a Rule 10b5-1 trading plan . The plan was adopted by Yury Gryzlov on November 13, 2025 , indicating the transaction followed a pre-arranged trading schedule.

Q: What type of security did Yury Gryzlov trade in this GDYN Form 4?

The transaction involved Common Stock of GDYN. It was reported as a non-derivative transaction, with 467 shares sold at $7.53 per share , leaving him with 506,988 common shares directly owned afterward.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

GRID DYNAMICS HOLDINGS, INC. (GDYN) had an insider transaction reported by Chief Operating Officer Yury Gryzlov. On August 18, 2026, he sold 467 shares of common stock at $7.53 per share in an open-market or private transaction. The sale was executed under a Rule 10b5-1 trading plan adopted on November 13, 2025. After this transaction, he directly holds 506,988 shares of GDYN common stock.

Insider Trade Summary 10b5-1

Net Seller: 467 shares

Net Sell 1 txn

Insider Gryzlov Yury

Role CHIEF OPERATING OFFICER

Sold 467 shs ($4K)

Type	Security	Shares	Price	Value
Sale	Common Stock ^F1	467	$7.53	$4K

Holdings After Transaction: Common Stock — 506,988 shares (Direct)

Footnotes (1)

F1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

Key Figures

Shares sold: 467 shares Sale price: $7.53 per share Shares owned after transaction: 506,988 shares +2 more

5 metrics

Shares sold 467 shares Common Stock sold by COO Yury Gryzlov on August 18, 2026

Sale price $7.53 per share Price for 467 GDYN Common Stock shares sold on August 18, 2026

Shares owned after transaction 506,988 shares Direct GDYN Common Stock holdings of Yury Gryzlov after the sale

10b5-1 plan adoption date November 13, 2025 Date Yury Gryzlov adopted the Rule 10b5-1 trading plan used for this sale

Net shares sold in filing 467 shares Net sell direction based on transaction summary in this Form 4

Key Terms

Rule 10b5-1 trading plan, Form 4, Common Stock, non-derivative

4 terms

Rule 10b5-1 trading plan regulatory

"These shares were sold pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

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.

non-derivative financial

"transaction_type": "non-derivative""

FAQ

What insider transaction did GDYN report for COO Yury Gryzlov?

GDYN reported that COO Yury Gryzlov sold 467 shares of common stock at $7.53 per share on August 18, 2026, under a Rule 10b5-1 trading plan adopted November 13, 2025.

How many GDYN shares did Yury Gryzlov sell and at what price?

Yury Gryzlov sold 467 GDYN shares at a price of $7.53 per share. The sale was reported as a non-derivative transaction in common stock and classified as a sale in an open-market or private transaction.

How many GDYN shares does Yury Gryzlov own after the reported sale?

After the sale, Yury Gryzlov directly holds 506,988 shares of GDYN common stock. This figure reflects his position immediately following the August 18, 2026 transaction of 467 shares reported in the Form 4 filing.

Was Yury Gryzlov’s GDYN stock sale under a Rule 10b5-1 plan?

Yes, the 467-share sale was executed under a Rule 10b5-1 trading plan. The plan was adopted by Yury Gryzlov on November 13, 2025, indicating the transaction followed a pre-arranged trading schedule.

What type of security did Yury Gryzlov trade in this GDYN Form 4?

The transaction involved Common Stock of GDYN. It was reported as a non-derivative transaction, with 467 shares sold at $7.53 per share, leaving him with 506,988 common shares directly owned afterward.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/19/2026 - 04:32 PM Accepted by SEC EDGAR 08/19/2026 - 04:31 PM

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)
08/18/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/18/2026		S		467⁽¹⁾	D	$7.53	506,988	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

Remarks:

	/s/Anil Doradla, by power of attorney	08/19/2026
	** 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)

Source: View Original Filing on SEC EDGAR