X0508 4 2026-02-07 0001743725 GRID DYNAMICS HOLDINGS, INC. GDYN 0001805673 Gryzlov Yury C/O GRID DYNAMICS HOLDINGS, INC. 6101 BOLLINGER CANYON ROAD, SUITE 465 SAN RAMON CA 94583 true CHIEF OPERATING OFFICER false Common Stock 2026-02-07 4 A 0 65824 0 A 540360 D Common Stock 2026-02-07 4 A 0 32912 0 A 573272 D Common Stock 2026-02-10 4 F 0 17310 6.94 D 555962 D Common Stock 2026-02-10 4 F 0 8654 6.94 D 547308 D Represents the acquisition of shares upon the determination of the Board of Directors of the Issuer that the performance conditions were met with respect to the performance share awards granted to the Reporting Person on January 1, 2024. Represents the acquisition of shares upon the determination of the Board of Directors of the Issuer that the performance conditions were met with respect to the performance share awards granted to the Reporting Person on February 14, 2025. Represents shares that have been withheld by the Issuer to satisfy tax withholding and remittance obligations in connection with the issuance of shares pursuant to performance share awards granted to the Reporting Person on January 1, 2024. Represents shares that have been withheld by the Issuer to satisfy tax withholding and remittance obligations in connection with the issuance of shares pursuant to performance share awards granted to the Reporting Person on February 14, 2025. /s/ Anil Doradla, by power of attorney 2026-02-10