C3.ai CEO Thomas Siebel Sold Company Stock
CEO Thomas Siebel offloaded over 444,000 shares of C3.ai following the exercise of vested stock options.
Updated on Sept. 26, 2026 in Artificial Intelligence
Live Poll
Do you view executive stock sales as a signal to adjust your own investment strategy?
Thomas Siebel sold 444,248 shares of C3.ai stock in September 2026, generating approximately $4.78 million in gross proceeds. The transactions were executed under a pre-established Rule 10b5-1 trading plan.
Why it matters
The sale highlights significant movement in personal holdings for the company head. These pre-planned transactions provide a window into executive activity as the company navigates its current market valuation.
The stock sales generated $4.78 million in gross proceeds, with a pre-tax profit of $3.05 million based on a $3.90 strike price. The firm currently maintains a market capitalization of $1.7 billion.
The players
Thomas Siebel
He is the chief executive officer and founder of C3.ai, a prominent enterprise artificial intelligence software company.
C3.ai
It is a publicly traded enterprise software company that specializes in AI and machine learning solutions for various industries.
The details
Siebel completed the divestment in two batches: 282,001 shares on September 15 at an average price of $10.90, and 162,247 shares on September 16 at an average price of $10.54. The sales occurred under a Rule 10b5-1 trading plan established in September 2024, utilizing shares acquired through the exercise of vested options.
Timeline
A Rule 10b5-1 trading plan was established in September 2024.
Siebel sold 282,001 shares on September 15, 2026.
Siebel sold 162,247 shares on September 16, 2026.
The Tech Race
Corporate insider sales under Rule 10b5-1 trading plans serve as a standard compliance mechanism within the volatile enterprise AI sector. This move aligns with broader industry trends where executives liquidate portions of their equity while maintaining significant stakes in their firms.
For retail investors, these transactions demonstrate the importance of tracking executive equity changes against the company's 52-week trading range of $7.68 to $20.22. Such sales clarify the current liquidity position of the firm's leadership regarding their remaining 722,362 shares.
The takeaway
Investors should monitor pre-planned executive stock sales as part of their broader analysis of corporate governance and leadership confidence. These filings provide transparency into how company heads manage their personal financial exposure to industry volatility.
Further reading
For more context on how leadership moves impact the broader Artificial Intelligence sector, visit our dedicated analysis page.
Live Poll
Do you view executive stock sales as a signal to adjust your own investment strategy?
