Grid Dynamics (GDYN): Alyeska group discloses 7.25% beneficial ownership stake

Rhea-AI Filing Summary

Alyeska Investment Group, L.P., Alyeska Fund GP, LLC and Anand Parekh report beneficial ownership of 6,066,193 shares of Grid Dynamics Holdings, Inc. common stock, representing 7.25% of the class as of June 30, 2026.

The reporting persons have shared voting and dispositive power over all 6,066,193 shares and no sole voting or dispositive power. The ownership is held through Alyeska Master Fund, L.P., with Alyeska Investment Group, L.P. acting as investment manager. Anand Parekh may be deemed a beneficial owner but disclaims beneficial ownership. The percentage is based on 83,626,054 shares outstanding from a Form 10-Q dated April 30, 2026. The parties agree to a joint filing under Rule 13d-1(k).

Key Figures

Shares beneficially owned: 6,066,193 shares Percent of class: 7.25% Shares outstanding: 83,626,054 shares +2 more

5 metrics

Shares beneficially owned 6,066,193 shares Common stock of Grid Dynamics as of June 30, 2026

Percent of class 7.25% Portion of Grid Dynamics common stock class held by reporting persons

Shares outstanding 83,626,054 shares Grid Dynamics common stock based on Form 10-Q dated April 30, 2026

Shared voting power 6,066,193 shares Shares over which reporting persons share voting authority

Shared dispositive power 6,066,193 shares Shares over which reporting persons share dispositive authority

Key Terms

beneficially own, shared voting power, dispositive power, Schedule 13G, +1 more

5 terms

beneficially own financial

"As of 30 June 2026, the Reporting Persons beneficially own 6,066,193 shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

shared voting power financial

"Shared Voting Power 6,066,193.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

dispositive power financial

"Shared Dispositive Power 6,066,193.00"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Schedule 13G regulatory

"JOINT FILING STATEMENT PURSUANT TO RULE 13d-1(k)"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Rule 13d-1(k) regulatory

"JOINT FILING STATEMENT PURSUANT TO RULE 13d-1(k)"

FAQ

What percentage of Grid Dynamics (GDYN) does Alyeska report owning?

Alyeska and related reporting persons report beneficial ownership of 7.25% of Grid Dynamics common stock, corresponding to 6,066,193 shares as of June 30, 2026, based on 83,626,054 shares outstanding.

How many Grid Dynamics (GDYN) shares are beneficially owned by the reporting group?

The reporting persons beneficially own 6,066,193 shares of Grid Dynamics common stock. This stake reflects shared voting and dispositive power over all such shares, with no sole voting or dispositive authority reported.

What is the total Grid Dynamics (GDYN) share count used to calculate Alyeska’s 7.25% stake?

The 7.25% ownership figure is calculated using 83,626,054 shares of Grid Dynamics common stock outstanding, as reported in a Form 10-Q dated April 30, 2026, serving as the reference share count.

Does Anand Parekh personally claim beneficial ownership of Grid Dynamics (GDYN) shares?

Anand Parekh may be deemed a beneficial owner as Chief Executive Officer of Alyeska Investment Group, L.P., but he expressly disclaims beneficial ownership of the 6,066,193 Grid Dynamics shares reported.

Who controls voting and investment decisions for Alyeska’s Grid Dynamics (GDYN) position?

The position is held by Alyeska Master Fund, L.P., while Alyeska Investment Group, L.P., as investment manager, exercises voting and investment control over the 6,066,193 Grid Dynamics shares.

Is this Grid Dynamics (GDYN) ownership reported as a joint filing?

Yes. The reporting persons have agreed to a joint filing under Rule 13d-1(k), confirming that current and future amendments will be filed on behalf of each of them subject to stated responsibilities.

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

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Available on EDGAR 08/14/2026 - 04:41 PM Accepted by SEC EDGAR 08/14/2026 - 04:37 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Grid Dynamics Holdings, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

39813G109

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 39813G109

1

Names of Reporting Persons

Alyeska Investment Group, L.P.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,066,193.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,066,193.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,066,193.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.25 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 39813G109

1

Names of Reporting Persons

Alyeska Fund GP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,066,193.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,066,193.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,066,193.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.25 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 39813G109

1

Names of Reporting Persons

Anand Parekh

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 6,066,193.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 6,066,193.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,066,193.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.25 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Grid Dynamics Holdings, Inc.
(b)	Address of issuer's principal executive offices: 6101 Bollinger Canyon Road, Suite 465, San Ramon, CA 94583
Item 2.
(a)	Name of person filing: (i) Alyeska Investment Group, L.P. (ii) Alyeska Fund GP, LLC (iii) Anand Parekh
(b)	Address or principal business office or, if none, residence: (i) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601 (ii) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601 (iii) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601
(c)	Citizenship: (i) Alyeska Investment Group, L.P. - Delaware (ii) Alyeska Fund GP, LLC - Delaware (iii) Anand Parekh - United States of America
(d)	Title of class of securities: Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 39813G109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 6,066,193
(b)	Percent of class: 7.25%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 6,066,193
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 6,066,193
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Alyeska Investment Group, L.P.

Signature:	Jason Bragg
Name/Title:	Jason Bragg | Chief Financial Officer
Date:	08/14/2026

Alyeska Fund GP, LLC

Signature:	Jason Bragg
Name/Title:	Jason Bragg | Chief Financial Officer
Date:	08/14/2026

Anand Parekh

Signature:	Anand Parekh
Name/Title:	Anand Parekh | Self
Date:	08/14/2026

Exhibit Information

As of 30 June 2026, the Reporting Persons beneficially own 6,066,193 shares of Common Stock. The number of shares of Common Stock outstanding (83,626,054) is based on the Form 10-Q dated 30 April 2026. Position held by Alyeska Master Fund, L.P. Alyeska Investment Group, L.P., as investment manager, exercises voting and investment control over the shares held by Alyeska Master Fund, L.P. Anand Parekh, as Chief Executive Officer of Alyeska Investment Group, L.P., may be deemed the beneficial owner of such shares. Mr. Parekh disclaims beneficial ownership of such shares. JOINT FILING STATEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on SCHEDULE 13G, is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on SCHEDULE 13G, shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.