X0306 4 2022-02-25 0 0001743725 GRID DYNAMICS HOLDINGS, INC. GDYN 0001805664 Klimoff Stan C/O GRID DYNAMICS HOLDINGS, INC. 5000 EXECUTIVE PARKWAY, SUITE 520 SAN RAMON CA 94583 0 1 0 0 Chief Strategy Officer Common Stock 2022-02-25 4 A 0 6799 0.00 A 201057 D Common Stock 2022-02-25 4 F 0 3555 14.72 D 197502 D Common Stock 72084 I See footnote Represents the acquisition of shares upon the determination of the Compensation Committee of the Board of Directors of the Issuer that the performance conditions were met with respect to performance share awards granted to the Reporting Person on March 2, 2021. 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 March 2, 2021. The shares are held of record by the O. Fox Charitable Trust for which the reporting person serves as trustee. /s/ Anil Doradla, by power of attorney 2022-02-28