Form 4: C3.ai CEO Thomas Siebel Executes Stock Option Plan

CEO Thomas Siebel exercised options and sold shares of C3.ai, Inc. under a pre-established Rule 10b5-1 trading plan.

Summary

• CEO and Chairman Thomas Siebel exercised options for 481,638 shares of Class A Common Stock at an exercise price of $2.04 per share.
• Following the exercise, the shares were sold in two tranches on May 15 and May 18, 2026, at weighted-average prices of $8.72 and $8.65, respectively.
• The transactions were conducted pursuant to a Rule 10b5-1 trading plan established on September 20, 2024.
• The reporting person maintains significant beneficial ownership through various trusts and entities.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event; while insider selling can be optically negative, the use of a pre-planned 10b5-1 program suggests standard financial planning rather than a lack of confidence in the company.

Positives

• Transactions were executed under a pre-planned Rule 10b5-1 program, indicating systematic rather than reactive selling.
• The CEO maintains a substantial remaining equity stake in the company.

Negatives

• The sale of shares by the CEO and Chairman may be perceived as a reduction in direct personal exposure to the company's future performance.

Risks

• Market perception of insider selling can lead to short-term volatility in the share price.
• Reliance on Rule 10b5-1 plans does not eliminate the potential for negative investor sentiment regarding executive divestment.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing, as it is a standard disclosure of insider transaction activity.

Management Comments

• The transactions were effected pursuant to a previously established Rule 10b5-1 trading plan.

Industry Context

StockSavvy.ai notes that insider selling via 10b5-1 plans is a common practice for executives to manage personal liquidity and diversify assets, and it is generally viewed as a neutral event unless the volume represents a significant portion of the executive's total holdings.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for corporate executives to avoid allegations of insider trading.
• The scale of the sale relative to the CEO's total beneficial ownership is consistent with typical executive wealth management practices in the software and AI sector.

Related Party Transactions

• The reporting person holds shares through various trusts and entities including The Siebel Living Trust, First Virtual Holdings, LLC, and Siebel Asset Management.

Stakeholder Impact

• Shareholders may experience minor sentiment-driven price fluctuations following the disclosure of insider sales.

Next Steps

• Continued monitoring of future Form 4 filings for further insider activity.

Key Dates

Keywords

C3.ai, Thomas Siebel, Insider Trading, Form 4, Stock Options, Rule 10b5-1