144 0001284309 XXXXXXXX LIVE 0001828791 Viant Technology Inc. 001-40015 2722 Michelson Drive Suite 100 Irvine CA 92612 1-949-861-8888 Lawrence Madden Officer Common Goldman Sachs & Co. LLC 200 West Street New York NY 10282 133334 1497340.82 17755759 04/01/2026 NASD Common 06/10/2025 Acquired as compensation -- Restricted Stock Units Issuer N 4467 06/10/2025 Compensation Common 06/10/2025 Acquired as compensation -- Restricted Stock Units Issuer N 125 06/10/2025 Compensation Common 03/10/2025 Acquired as compensation -- Restricted Stock Units Issuer N 25985 03/10/2025 Compensation Common 03/10/2025 Acquired as compensation -- Restricted Stock Units Issuer N 19229 03/10/2025 Compensation Common 03/10/2025 Acquired as compensation -- Restricted Stock Units Issuer N 4672 03/10/2025 Compensation Common 03/10/2026 Acquired as compensation -- Restricted Stock Units Issuer N 10263 03/10/2026 Compensation Common 03/10/2026 Acquired as compensation -- Restricted Stock Units Issuer N 4662 03/10/2026 Compensation Common 03/10/2026 Acquired as compensation -- Restricted Stock Units Issuer N 1956 03/10/2026 Compensation Common 03/10/2026 Acquired as compensation -- Restricted Stock Units Issuer N 4314 03/10/2026 Compensation Common 03/10/2026 Acquired as compensation -- Restricted Stock Units Issuer N 19187 03/10/2026 Compensation Common 03/10/2024 Acquired as compensation -- Restricted Stock Units Issuer N 26041 03/10/2024 Compensation Common 03/10/2024 Acquired as compensation -- Restricted Stock Units Issuer N 12433 03/10/2024 Compensation N Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Common 03/13/2026 1658 21607.39 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Common 01/22/2026 4244 55285.82 The sales of shares set forth herein are made in connection with a selling plan dated 12/15/2025 that is intended to comply with Rule 10b5-1(c). 04/01/2026 12/15/2025 Goldman Sachs & Co. LLC on behalf of Lawrence Madden