144 0001031530 XXXXXXXX LIVE 0001577526 C3.ai, Inc. 001-39744 1400 SEAPORT BLVD REDWOOD CITY CA 94063 650-503-2200 Thomas M. Siebel Officer and Director Class A Common J.P. Morgan Securities LLC 270 Park Avenue 10th Floor New York NY 10017 1795490 16087590 151949285 07/14/2026 NYSE Class A Common Stock 07/14/2026 Stock Option Exercise Issuer N 1795490 07/14/2026 Cash N Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 05/04/2026 27210 252205 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 05/15/2026 369624 3221938 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 05/18/2026 112014 968641 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 06/01/2026 17350 196322 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 06/12/2026 23570 257368 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 06/15/2026 472005 5241899 The sales under this filing are from Cashless Option Exercises that will occur within 3 months from the date of this filing. 07/14/2026 09/20/2024 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Thomas M. Siebel.