X0306 4 2021-10-21 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 Common Stock 2021-09-30 5 G 0 E 405000 0.00 D 95994 D Common Stock 2021-09-30 5 G 0 E 405000 0.00 A 448733 I See Footnote Common Stock 2021-10-21 4 S 0 33266 47.63 D 62728 D Common Stock 2021-10-21 4 S 0 1441 48.06 D 61287 D Common Stock 99137 I See Footnote Reflects a correction to the number of shares owned directly by the Reporting Person and the number of shares owned indirectly by the Reporting Person through the Abbo Children's Trust (the "Children's Trust") and the Edward Y. Abbo and Alison C. Abbo 2001 Family Trust (the "Family Trust"). In the Reporting Person's March 2021 filings ("March Filings"), the shares sold were reported as being sold by the Reporting Person directly. The shares reported as sold in the March Filings were actually sold as follows: 306,236 directly, 10,933 by the Children's Trust and 24,784 by the Family Trust. This correction does not impact the aggregate number of shares sold, sales prices or the aggregate number of shares beneficially owned by the Reporting Person, as reported in prior filings. The shares are held by the Children's Trust, of which the Reporting Person is trustee. Transaction pursuant to a previously established Rule 10b5-1 Plan. Represents weighted average sales price. The shares were sold at prices ranging from $47.02 to $48.01. 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 $48.02 to $48.21. 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. The shares are held by the Family Trust, of which the Reporting Person is trustee. /s/ Brady Mickelsen, Attorney-in-Fact 2021-10-25