Form 4: C3.ai CEO Sells Shares
Insider Transaction (Form 4)
Thomas M Siebel, CEO and Chairman of the Board, a Director and 10% owner of C3.ai, Inc., sold 444,248 shares of common stock on September 15, 2026.
Summary
- Option exercise/conversion: acquired 282,001 Class A Common Stock at $3.90 ($1,099,804) on September 15, 2026; holds 1,004,363 after (Direct).
- Open-market sale: disposed of 282,001 Class A Common Stock at $10.90 ($3,073,811) on September 15, 2026; holds 722,362 after (Direct).
- Option exercise/conversion: acquired 162,247 Class A Common Stock at $3.90 ($632,763) on September 16, 2026; holds 884,609 after (Direct).
- Open-market sale: disposed of 162,247 Class A Common Stock at $10.54 ($1,710,083) on September 16, 2026; holds 722,362 after (Direct).
- Option exercise/conversion: disposed of 282,001 Stock Option (Right to Buy) on September 15, 2026; holds 2,131,195 after (Direct).
- Option exercise/conversion: disposed of 162,247 Stock Option (Right to Buy) on September 16, 2026; holds 1,968,948 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $4,783,894 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Thomas M Siebel — Director, Officer (CEO and Chairman of the Board), 10% owner
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-15 | Option exercise/conversion | Class A Common Stock | 282,001 | $4 | $1.1M | 1,004,363 |
| 2026-09-15 | Open-market sale | Class A Common Stock | 282,001 | $11 | $3.1M | 722,362 |
| 2026-09-16 | Option exercise/conversion | Class A Common Stock | 162,247 | $4 | $632.8K | 884,609 |
| 2026-09-16 | Open-market sale | Class A Common Stock | 162,247 | $11 | $1.7M | 722,362 |
| 2026-09-15 | Option exercise/conversion | Stock Option (Right to Buy) | 282,001 | — | — | 2,131,195 |
| 2026-09-16 | Option exercise/conversion | Stock Option (Right to Buy) | 162,247 | — | — | 1,968,948 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-15 | Option exercise/conversion (282,001 shares) |
| 2026-09-15 | Open-market sale (282,001 shares) |
| 2026-09-16 | Option exercise/conversion (162,247 shares) |
| 2026-09-16 | Open-market sale (162,247 shares) |
| 2026-09-15 | Option exercise/conversion (282,001 shares) |
| 2026-09-16 | Option exercise/conversion (162,247 shares) |
Keywords
insider transaction, Form 4, AI, C3.ai, Inc., bearish, Thomas M Siebel
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