GDYN COO sells 1,245 shares in open market

GRID DYNAMICS HOLDINGS, INC.

Accepted by SEC EDGAR 04/02/2026 - 08:15 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

GRID DYNAMICS HOLDINGS, INC. Chief Operating Officer Yury Gryzlov completed an open-market sale of 1,245 shares of Common Stock at $5.54 per share. The transaction took place on April 2, 2026 and was executed under a pre-arranged Rule 10b5-1 trading plan.

After this sale, Gryzlov directly holds 520,482 shares of Common Stock. The filing characterizes the transaction as an open-market sale, and the trading plan was previously adopted on November 13, 2025.

Insider Trade Summary 10b5-1

Net Seller: 1,245 shares

Net Sell 1 txn

Insider Gryzlov Yury

Role CHIEF OPERATING OFFICER

Sold 1,245 shs ($7K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,245	$5.54	$7K

Holdings After Transaction: Common Stock — 520,482 shares (Direct)

Footnotes (1)

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: 1,245 shares Sale price: $5.54 per share Shares held after transaction: 520,482 shares

3 metrics

Shares sold 1,245 shares Open-market sale on April 2, 2026

Sale price $5.54 per share Price for Common Stock sale on April 2, 2026

Shares held after transaction 520,482 shares Direct Common Stock ownership following the sale

Key Terms

Common Stock, open-market sale, Rule 10b5-1 trading plan

3 terms

Common Stock financial

"security_title: "Common Stock" for the reported transaction"

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.

open-market sale financial

"transaction_action: "open-market sale" describes the transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Rule 10b5-1 trading plan regulatory

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

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.

FAQ

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

What insider transaction did GDYN executive Yury Gryzlov report?

Yury Gryzlov reported an open-market sale of 1,245 shares of GRID DYNAMICS HOLDINGS, INC. Common Stock at $5.54 per share. The transaction occurred on April 2, 2026 and reflects a routine disposition rather than a new share grant or option exercise.

How many GDYN shares does Yury Gryzlov hold after this Form 4 sale?

After the reported sale, Yury Gryzlov directly holds 520,482 shares of GRID DYNAMICS HOLDINGS, INC. Common Stock. This figure represents his direct ownership position immediately following the April 2, 2026 open-market transaction disclosed in the Form 4 filing.

Was the GDYN insider sale by Yury Gryzlov under a Rule 10b5-1 plan?

Yes. The 1,245-share sale reported by Yury Gryzlov was executed under a Rule 10b5-1 trading plan. The footnote explains that this pre-arranged plan was adopted by the reporting person on November 13, 2025, indicating the sale followed a predetermined schedule.

What price did GDYN’s COO receive per share in the reported sale?

The Form 4 shows that GRID DYNAMICS HOLDINGS, INC. Chief Operating Officer Yury Gryzlov sold 1,245 Common Stock shares at $5.54 per share. This reported price reflects the weighted transaction price for the April 2, 2026 open-market sale.

Does the Form 4 for GDYN include any option exercises or derivative transactions?

No derivative transactions are listed in this Form 4. The filing reports only a single non-derivative transaction: an open-market sale of 1,245 Common Stock shares. The derivativeSummary section is empty, indicating no option exercises or similar derivative events in this report.

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

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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^*

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)
04/02/2026

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	04/02/2026		S		1,245(1)	D	$5.54	520,482	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. 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	04/02/2026
	** 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)