X0306 4 2021-07-01 0 0001577526 C3.ai, Inc. AI 0001164644 WARD JR STEPHEN M C/O C3.AI, INC. 1300 SEAPORT BLVD, SUITE 500 REDWOOD CITY CA 94063 1 0 0 0 Class A Common Stock 2021-06-22 5 G 0 E 3000 0.00 D 487557 D Class A Common Stock 2021-07-01 4 M 0 12532 2.04 A 500089 D Class A Common Stock 2021-07-01 4 S 0 6877 62.39 D 493212 D Class A Common Stock 2021-07-01 4 S 0 9121 63.30 D 484091 D Class A Common Stock 2021-07-01 4 S 0 4002 63.91 D 480089 D Stock Option (Right to Buy) 2.04 2021-07-01 4 M 0 12532 0.00 D 2027-11-07 Class A Common Stock 12532 83718 D Transaction pursuant to a previously established Rule 10b5-1 Plan. Represents weighted average sales price. The shares were sold at prices ranging from $61.78 to $62.76. 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 $62.78 to $63.77. 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 $63.78 to $64.29. 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. Provided the Reporting Person remains a director of the Company and attends in person the regularly scheduled meeting of the Board during each fiscal quarter, commencing on November 8, 2017 (the "Vesting Commencement Date"), then 5% of the shares subject to the option shall vest on the last day of such fiscal quarter (the "Quarterly Shares") during the term of the option, provided, however, if the Reporting Person fails to attend any such regularly scheduled meeting, then vesting for the Quarterly Shares shall not occur and will be suspended (any such suspended Quarterly Shares being referred to collectively as the "Suspended Shares"). For any Suspended Shares, such shares shall vest only following the fifth anniversary of the applicable Vesting Commencement Date, if the Reporting Person satisfies the attendance requirements in subsequent periods. /s/ Brady Mickelsen, Attorney-in-Fact 2021-07-06