Form 4: C3.ai CEO Thomas Siebel Executes Large Stock Transactions

CEO Thomas Siebel exercised options and transferred shares of C3.ai, Inc. in a series of transactions between June 1 and June 3, 2026.

Summary

• CEO Thomas Siebel exercised 6,166,667 stock options at a price of $11.16 per share.
• CEO Thomas Siebel acquired 32,736 shares through the vesting of Restricted Stock Units (RSUs).
• 17,350 shares were sold at a weighted-average price of $11.32 to cover tax withholding obligations.
• 6,182,053 shares were transferred to The Siebel Living Trust, of which the CEO is the trustee.
• Following these transactions, the CEO maintains a significant beneficial ownership stake in C3.ai.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the transactions are primarily related to routine option exercises, tax obligations, and estate planning rather than a change in strategic direction.

Positives

• The CEO continues to hold a substantial equity position in the company, signaling long-term alignment with shareholders.
• The exercise of options demonstrates confidence in the company's underlying value.

Negatives

• The sale of shares to cover tax obligations is a standard administrative procedure but results in a minor reduction of direct holdings.

Risks

• Concentration of ownership within trusts and entities controlled by the CEO.
• Market volatility impacting the value of the CEO's significant equity holdings.

Future Outlook

The filing does not provide forward-looking financial guidance, as it is a disclosure of insider transactions.

Management Comments

• The reporting person will provide full information regarding the number of shares sold at each separate price upon request.

Industry Context

StockSavvy.ai notes that large-scale option exercises by founders and CEOs in the AI sector are common as equity compensation packages vest, often reflecting long-term retention strategies rather than a change in corporate sentiment.

Comparison to Industry Standards

• The transaction structure is consistent with standard executive compensation and tax planning practices observed in large-cap technology firms.
• The use of trusts for estate planning by C3.ai leadership aligns with common practices among S&P 500 executives.

Related Party Transactions

• The CEO transferred 6,182,053 shares to The Siebel Living Trust, an entity for which he serves as trustee.

Stakeholder Impact

• Minimal impact on shareholders as the transactions represent internal rebalancing and tax compliance rather than a divestment of interest.

Next Steps

• Continued monitoring of future Form 4 filings for changes in insider ownership.

Key Dates

Keywords

C3.ai, AI, Thomas Siebel, Insider Trading, Form 4, Stock Options, Equity Ownership