Thomas M. Siebel Insider Trading Activity
Thomas M. Siebel has been net-selling over the last 12 months with 0 purchases and 29 sales across 1 company.
AI is the most-traded position with 29 trades. The largest single transaction was a sale of AI for $16.4M on Jul 18, 2025.
Performance Scorecard
Forward stock performance after each transaction by Thomas M. Siebel. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | +6.1% | 57% | 28 |
| 90 days | — | +25.6% | 95% | 22 |
| 120 days | — | +32.1% | 100% | 20 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersAI · C3.ai, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| May 18, 2026 | AI | Sell | 112,014 | $8.65 | $969K | CEO |
| May 15, 2026 | AI | Sell | 369,624 | $8.72 | $3.2M | CEO |
| May 4, 2026 | AI | Sell | 27,210 | $9.27 | $252K | Executive Chairman |
| Apr 14, 2026 | AI | Sell | 165,278 | $8.49 | $1.4M | Executive Chairman |
| Apr 13, 2026 | AI | Sell | 326,189 | $8.31 | $2.7M | Executive Chairman |
| Mar 18, 2026 | AI | Sell | 219,294 | $8.67 | $1.9M | Executive Chairman |
| Mar 17, 2026 | AI | Sell | 282,203 | $8.86 | $2.5M | Executive Chairman |
| Mar 12, 2026 | AI | Sell | 23,435 | $9.11 | $213K | Executive Chairman |
| Mar 2, 2026 | AI | Sell | 17,655 | $7.79 | $138K | Executive Chairman |
| Feb 10, 2026 | AI | Sell | 511,732 | $11.66 | $6.0M | Executive Chairman |
| Feb 2, 2026 | AI | Sell | 27,605 | $10.81 | $298K | Executive Chairman |
| Jan 13, 2026 | AI | Sell | 212,586 | $13.52 | $2.9M | Executive Chairman |
| Jan 13, 2026 | AI | Sell | 309,589 | $13.52 | $4.2M | Executive Chairman |
| Dec 17, 2025 | AI | Sell | 140,768 | $14.22 | $2.0M | Executive Chairman |
| Dec 16, 2025 | AI | Sell | 392,064 | $14.37 | $5.6M | Executive Chairman |
| Dec 12, 2025 | AI | Sell | 23,000 | $15.94 | $367K | Executive Chairman |
| Dec 2, 2025 | AI | Sell | 17,000 | $14.21 | $242K | Executive Chairman |
| Nov 11, 2025 | AI | Sell | 543,706 | $15.24 | $8.3M | Executive Chairman |
| Nov 3, 2025 | AI | Sell | 27,545 | $17.30 | $477K | Executive Chairman |
| Oct 14, 2025 | AI | Sell | 554,802 | $18.82 | $10.4M | Executive Chairman |
| Sep 16, 2025 | AI | Sell | 566,125 | $17.23 | $9.8M | Executive Chairman |
| Sep 12, 2025 | AI | Sell | 92,000 | $16.33 | $1.5M | Executive Chairman |
| Sep 2, 2025 | AI | Sell | 17,200 | $16.49 | $284K | Executive Chairman |
| Aug 12, 2025 | AI | Sell | 577,678 | $16.78 | $9.7M | CEO |
| Aug 4, 2025 | AI | Sell | 336,000 | $22.77 | $7.7M | CEO |
| Jul 18, 2025 | AI | Sell | 575,874 | $28.56 | $16.4M | CEO |
| Jul 18, 2025 | AI | Sell | 13,594 | $29.24 | $397K | CEO |
| Jun 11, 2025 | AI | Sell | 590,995 | $25.01 | $14.8M | CEO |
| Jun 11, 2025 | AI | Sell | 10,503 | $25.76 | $271K | CEO |
| Jun 2, 2025 | AI | Sell | 17,000 | $26.30 | $447K | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| AI | C3.ai, Inc. | 30 | $115.3M |
Other insiders at C3.ai, Inc.
3 other tracked filers at AI.