Form 4: C3.ai CEO Siebel Sells $9.6M in Class A Stock

C3.ai CEO Thomas M. Siebel sold 577,678 shares of Class A Common Stock for approximately $9.69 million through a pre-arranged 10b5-1 trading plan.

Summary

• Thomas M. Siebel, Chief Executive Officer, Director, and 10% Owner of C3.ai, Inc. (AI), sold 577,678 shares of Class A Common Stock.
• The transaction occurred on August 12, 2025, at a weighted-average price of $16.78 per share.
• The total value of the shares sold is approximately $9,693,000.
• The sale was executed under a Rule 10b5-1 trading plan established on September 20, 2024.
• Shares were sold in multiple transactions at prices ranging from $16.165 to $17.11, inclusive.
• Following the transaction, Siebel directly beneficially owns 2,973,572 shares.
• Siebel also indirectly beneficially owns an additional 1,489,320 shares through various trusts and entities.

Sentiment

Score: 4

Explanation: While the sale was pre-planned via a 10b5-1 plan, a large insider sale by the CEO and a 10% owner can still be viewed with slight caution by the market, as it reduces the insider's direct stake in the company.

Positives

• The sale was conducted under a pre-established Rule 10b5-1 trading plan, indicating a planned transaction rather than a reaction to new, undisclosed negative information.

Negatives

• A significant sale of 577,678 shares by the CEO and a 10% owner, totaling approximately $9.69 million, reduces insider ownership.
• Insider selling, even if pre-planned, can sometimes be perceived negatively by investors as it reduces the insider's direct financial alignment with the company's future stock performance.

Risks

• Potential negative market perception due to a large insider sale, which could lead to short-term stock price volatility.

Future Outlook

N/A

Industry Context

This filing is a standard insider transaction report and does not provide broader industry context or trends. It reflects an individual executive's planned stock sale.

Related Party Transactions

• Thomas M. Siebel indirectly holds shares through The Siebel Living Trust u/a/d 7/27/93, as amended, First Virtual Holdings, LLC, Siebel Asset Management, L.P., Siebel Asset Management III, L.P., and The Siebel 2011 Irrevocable Children's Trust, all of which are related entities where he holds a controlling or influential position.

Stakeholder Impact

• Shareholders may react to the news of a significant insider sale, potentially influencing short-term stock price movements.

Key Dates

Recommendation

The sale by CEO Thomas M. Siebel was executed under a pre-established Rule 10b5-1 trading plan, indicating it was a scheduled transaction rather than a reaction to new, undisclosed information. While large insider sales can sometimes create negative sentiment, the pre-planned nature mitigates immediate concerns about the company's fundamentals. Investors should monitor future filings and company performance, but this specific transaction does not warrant an immediate 'sell' recommendation based solely on its nature.

Keywords

C3.ai, AI, Thomas Siebel, Insider Sale, Form 4, Stock Transaction, 10b5-1 Plan, CEO, Director, 10% Owner