Grid Dynamics officer plans sale of 3,918 shares

GRID DYNAMICS HOLDINGS, INC.

Rhea-AI Filing Summary

GRID DYNAMICS HOLDINGS, INC. (GDYN) has a notice from officer Yury Gryzlov indicating an intention to sell 3,918 shares of common stock under Rule 144. These shares have an aggregate market value of $31,344.00 and are held through Morgan Stanley Smith Barney LLC Executive Financial Services.

The 3,918 shares relate to restricted stock acquired from the issuer on September 13, 2022. Over the prior three months, the same person reported Rule 144 sales of GDYN common stock on July 2, 2026, August 13, 2026, and August 18, 2026.

Key Figures

Shares proposed for sale: 3,918 shares Aggregate market value of proposed sale: $31,344.00 Acquisition date of restricted stock: September 13, 2022 +4 more

7 metrics

Shares proposed for sale 3,918 shares Common stock covered by the current Rule 144 notice

Aggregate market value of proposed sale $31,344.00 Value reported for the 3,918 GDYN shares to be sold

Acquisition date of restricted stock September 13, 2022 Date the restricted stock subject to sale was acquired from the issuer

Shares sold July 2, 2026 1,245 shares GDYN common stock sold for $7,831.05 during the past three months

Proceeds July 2, 2026 sale $7,831.05 Total proceeds from 1,245 GDYN shares sold

Shares sold August 13, 2026 3,930 shares GDYN common stock sold for $31,440.00 during the past three months

Shares sold August 18, 2026 467 shares GDYN common stock sold for $3,516.51 during the past three months

Key Terms

Rule 144, restricted stock, aggregate market value

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock financial

"Common | 09/13/2022 | Restricted Stock | ISSUER"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC ... | 3918 | 31344.00"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

What does the Form 144 filing disclose for GRID DYNAMICS HOLDINGS, INC. (GDYN)?

It discloses that officer Yury Gryzlov has given notice of a proposed sale of 3,918 shares of GDYN common stock under Rule 144, with an aggregate market value of $31,344.00, held through Morgan Stanley Smith Barney LLC Executive Financial Services.

How many GDYN shares are proposed to be sold under this Rule 144 notice?

The notice covers a proposed sale of 3,918 shares of GRID DYNAMICS HOLDINGS, INC. common stock, with an aggregate market value of $31,344.00 as reported in the securities information section.

What type of GDYN securities are involved in Yury Gryzlov’s planned sale?

The planned sale involves common stock of GRID DYNAMICS HOLDINGS, INC., specifically restricted stock that was acquired from the issuer on September 13, 2022, as stated in the securities-to-be-sold section.

What GDYN share sales has Yury Gryzlov reported in the past three months?

Over the past three months, Yury Gryzlov reported GDYN common stock sales of 1,245 shares for $7,831.05 on July 2, 2026, 3,930 shares for $31,440.00 on August 13, 2026, and 467 shares for $3,516.51 on August 18, 2026.

Who is the broker or financial intermediary for the GDYN shares in this Form 144?

The common stock covered by this notice is held through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

When were the GDYN restricted shares to be sold originally acquired?

The restricted stock that is the subject of the proposed sale of 3,918 shares of GRID DYNAMICS HOLDINGS, INC. common stock was acquired from the issuer on September 13, 2022, according to the securities-to-be-sold section.

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

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Available on EDGAR 09/03/2026 - 04:04 PM EDT Accepted by SEC EDGAR 09/03/2026 - 04:04 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001805673
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GRID DYNAMICS HOLDINGS, INC.
SEC File Number	001-38685
Address of Issuer	6101 Bollinger Canyon Road, Suite 465 San Ramon CALIFORNIA 94583
Phone	(650) 523-5000
Name of Person for Whose Account the Securities are To Be Sold	YURY GRYZLOV
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	3918	31344.00	81126881	09/03/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/13/2022	Restricted Stock	ISSUER			3918	09/13/2022	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
YURY GRYZLOV 6101 Bollinger Canyon Road, Suite 465 San Ramon CA 94583	Common	08/18/2026	467	3516.51
YURY GRYZLOV 6101 Bollinger Canyon Road, Suite 465 San Ramon CA 94583	Common	08/13/2026	3930	31440.00
YURY GRYZLOV 6101 Bollinger Canyon Road, Suite 465 San Ramon CA 94583	Common	07/02/2026	1245	7831.05

144: Remarks and Signature

Remarks
Date of Notice	09/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/13/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Yury Gryzlov
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)