C3.ai CEO Thomas Siebel Disposes 66,752 Shares for Tax Withholding
C3.ai CEO Thomas Siebel sold 66,752 shares on Sept. 14, 2026, for tax withholding, according to an SEC filing. The sale was automatic and not discretionary. Siebel still holds 9.3 million shares and derivatives worth ~$104.1 million. C3.ai's stock has fallen 38% over the past year, with Q1 2027 revenue down 26% to $52 million and a net loss of $93 million.






