144 0001284309 XXXXXXXX LIVE 0001828791 Viant Technology Inc. 001-40015 2722 Michelson Drive Suite 100 Irvine CA 92612 9498618888 Lawrence Madden Officer Class A Common Stock Morgan Stanley Smith Barney One New York Plaza, 8th Floor New York NY 10004 26370 318813 20080982 06/12/2026 NASDAQ Class A Common Stock 06/10/2026 Restricted stock units awarded under incentive award plan Issuer N 10124 03/15/2024 Compensation Class A Common Stock 06/10/2026 Restricted stock units awarded under incentive award plan Issuer N 9368 03/15/2025 Compensation Class A Common Stock 06/10/2026 Restricted stock units awarded under incentive award plan Issuer N 4248 03/18/2025 Compensation Class A Common Stock 06/10/2026 Restricted stock units awarded under incentive award plan Issuer N 20771 03/15/2026 Compensation N Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 05/08/2026 18538 219671.59 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 05/11/2026 13826 156105.22 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 05/11/2026 3471 41463.18 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/21/2026 13283 144929.48 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/22/2026 13263 142427.38 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/23/2026 12782 129881.74 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/06/2026 7297 82517.39 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/01/2026 7410 83536.64 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 04/02/2026 10131 110880.76 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 03/13/2026 1658 21607.39 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 06/05/2026 18663 228483.64 Lawrence Madden 2722 Michelson Drive Suite 100 Irvine CA 92612 Class A Common Stock 06/08/2026 14670 177479.13 06/12/2026 /s/ Lawrence Madden