C3.ai CEO Thomas Siebel Sells Over $4.8 Million Worth of Shares Amid Stock Decline
Thomas M. Siebel, CEO and Chairman of C3.ai (AI), sold over 444,000 shares worth approximately $4.8 million in early September 2026 following a significant decline in the company's stock price. The transaction was part of a pre-established Rule 10b5-1 trading plan and involved cashless exercise and sale of options with a strike price of $3.90, which were immediately sold on the open market at an average price of $10.77 per share. The stock had declined by approximately 40% over the previous year as of September 2026, partly due to Siebel's temporary absence from his role in early 2025 for health reasons before he returned later that year. Despite this sale, Siebel still holds a significant stake directly and indirectly through trusts and other legal entities, with an estimated total value exceeding $98 million as of the transaction date. C3.ai provides enterprise AI software solutions on a SaaS model to global clients across multiple regions. The company reported trailing twelve-month (TTM) revenues of $232.4 million but also recorded a net loss of $446.4 million during that period, with a current market capitalization of approximately $1.6 billion.
Topics: C3.ai executive activity SEC filing stock sale