C3.ai CEO Thomas Siebel Exercises Options and Sells Shares Under 10b5-1 Plan

C3.ai, Inc. CEO and Chairman Thomas M. Siebel executed a series of stock option exercises and share sales on July 14-15, 2026, pursuant to a Rule 10b5-1 trading plan established in September 2024. Siebel exercised 462,565 stock options at strike prices of $2.04 and $3.90, acquiring Class A Common Stock, then immediately sold the same number of shares at market prices ranging from $9.07 to $9.32 per share. The transactions resulted in net sales of approximately $3.2 million. Following these transactions, Siebel's direct ownership decreased to 722,362 shares, while his indirect holdings through various entities total approximately 1.5 million additional shares. The filing notes all transactions were conducted under a pre-established trading plan, which helps insulate executives from allegations of trading on material non-public information.