144 0001805657 XXXXXXXX LIVE 0001743725 GRID DYNAMICS HOLDINGS, INC. 001-38685 5000 Executive Parkway, Suite 520 San Ramon CA 94583 (650) 523-5000 LEONARD LIVSCHITZ Officer Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

15000 178111.00 75973726 04/09/2024 NASDAQ COMMON 02/12/2021 Performance Shares ISSUER N 15000 02/12/2021 Not Applicable N LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 03/27/2024 3116 37392.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 03/26/2024 1884 22971.05 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 03/26/2024 10000 120049.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 03/12/2024 10000 123580.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 03/12/2024 5000 61796.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 02/27/2024 10000 138770.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 02/27/2024 5000 69358.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 02/13/2024 10000 130754.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 02/13/2024 5000 65409.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 01/30/2024 10000 130551.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 01/30/2024 5000 65296.50 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 01/16/2024 10000 125875.00 LEONARD LIVSCHITZ

5000 Executive Parkway, Suite 520 San Ramon CA 94583

Common 01/16/2024 5000 62888.50 04/09/2024 09/01/2023 /s/ Leonard Livschitz