X0609 4 2026-11-05 0 0001743725 GRID DYNAMICS HOLDINGS, INC. GDYN 0001204424 CARNEY LLOYD false C/O GRID DYNAMICS HOLDINGS, INC. 6101 BOLLINGER CANYON ROAD, SUITE 465 SAN RAMON CA 94583 1 0 0 0 0 Common Stock 2026-11-05 4 S 0 15156 13.39 D 677130 D Common Stock 2026-11-06 4 S 0 39505 13.15 D 637625 D Common Stock 2026-11-06 4 G 0 7435 0 D 630190 D Common Stock 2026-11-06 4 G 0 7435 0 A 12635 I See footnote Common Stock 2026-11-06 4 S 0 12542 13.16 D 0 I See footnote Common Stock 288800 I See footnote Common Stock 19675 I See footnote This transaction was executed in multiple trades at prices ranging from $13.38 to $13.42. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price. This transaction was executed in multiple trades at prices ranging from $13.02 to $13.33. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price. The transaction involved a bona fide gift of shares by the reporting person for no consideration. The shares are held by The Lloyd Carney Foundation (the "Foundation"). The Foundation is a 501(c)(3) charitable organization controlled by the Reporting Person. This transaction was executed in multiple trades at prices ranging from $13.02 to $13.32. The price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate sale price. The shares are held by The Lloyd A. Carney Revocable Trust dated September 25, 1995. The shares are held by the Lloyd Carney 2018 Grantor Retained Annuity Trust. The shares are held by the Lloyd Carney 2020 Grantor Retained Annuity Trust. /s/ Anil Doradla, by power of attorney 2026-11-09