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 203000 1843240 151949285 08/03/2026 NYSE Class A Common Stock 08/02/2026 RSU Vest Issuer N 203000 08/02/2026 NA 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 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 07/14/2026 264100 2395413 Thomas M. Siebel 1400 SEAPORT BLVD REDWOOD CITY CA 94063 Class A Common Stock 07/15/2026 198465 1848741 This filing is for a sale of shares to cover taxes for Restricted Stock Units (RSUs) that will be acquired by the seller on 08/02/2026 , 09/01/2026 and on 09/11/2026. 08/03/2026 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Thomas M. Siebel.