X0306 4 2021-07-15 0 0001577526 C3.ai, Inc. AI 0001218471 ABBO EDWARD Y C/O C3.AI, INC. 1300 SEAPORT BLVD, SUITE 500 REDWOOD CITY CA 94063 0 1 0 0 Chief Technology Officer Class A Common Stock 2021-07-15 4 M 0 74399 1.56 A 486752 D Class A Common Stock 2021-07-15 4 S 0 27562 50.95 D 459190 D Class A Common Stock 2021-07-15 4 S 0 39997 51.74 D 419193 D Class A Common Stock 2021-07-15 4 S 0 18109 52.62 D 401084 D Class A Common Stock 2021-07-15 4 S 0 1100 53.27 D 399984 D Class A Common Stock 54666 I See Footnote Class A Common Stock 123921 I See Footnote Stock Option (Right to Buy) 1.56 2021-07-15 4 M 0 74399 0.00 D 2024-01-20 Class A Common Stock 74399 235164 D Transaction pursuant to a previously established Rule 10b5-1 Plan. Represents weighted average sales price. The shares were sold at prices ranging from $50.22 to $51.21. The Reporting Person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Represents weighted average sales price. The shares were sold at prices ranging from $51.22 to $52.21. The Reporting Person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Represents weighted average sales price. The shares were sold at prices ranging from $52.22 to $53.21. The Reporting Person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. Represents weighted average sales price. The shares were sold at prices ranging from $53.22 to $53.32. The Reporting Person will provide upon request, to the SEC, the Issuer or security holder of the Issuer, full information regarding the number of shares sold at each separate price. The shares are held by the Abbo 2012 Children's Trust, of which the Reporting Person is trustee. The shares are held by the Edward Y. Abbo and Alison C. Abbo 2001 Family Trust, of which the Reporting Person is trustee. Fully vested. Due to rounding in connection with the reverse stock split, the total shares include 1 additional share that was not originally reported on the Reporting Person's Form 3 /s/ Brady Mickelsen, Attorney-in-Fact 2021-07-16