Thomas M. Siebel Insider Trading Activity
Thomas M. Siebel has been net-selling over the last 12 months with 0 purchases and 25 sales across 1 company.
AI is the most-traded position with 25 trades. The largest single transaction was a sale of AI for $10.4M on Oct 14, 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 | — | +4.2% | 53% | 30 |
| 90 days | — | +17.7% | 78% | 27 |
| 120 days | — | +25.2% | 88% | 25 |
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 | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
May 18, 2026 | AI | Sell | 112,014 | $8.65 | $969K | −13.4% | CEO | |
May 15, 2026 | AI | Sell | 369,624 | $8.72 | $3.2M | −33.8% | CEO | |
May 4, 2026 | AI | Sell | 27,210 | $9.27 | $252K | −3.5% | Executive Chairman | |
Apr 14, 2026 | AI | Sell | 165,278 | $8.49 | $1.4M | −18.6% | Executive Chairman | |
Apr 13, 2026 | AI | Sell | 326,189 | $8.31 | $2.7M | −31.1% | Executive Chairman | |
Mar 18, 2026 | AI | Sell | 219,294 | $8.67 | $1.9M | −23.3% | Executive Chairman | |
Mar 17, 2026 | AI | Sell | 282,203 | $8.86 | $2.5M | −28.1% | Executive Chairman | |
Mar 12, 2026 | AI | Sell | 23,435 | $9.11 | $213K | −3.1% | Executive Chairman | |
Mar 2, 2026 | AI | Sell | 17,655 | $7.79 | $138K | −2.3% | Executive Chairman | |
Feb 10, 2026 | AI | Sell | 511,732 | $11.66 | $6.0M | −41.5% | Executive Chairman | |
Feb 2, 2026 | AI | Sell | 27,605 | $10.81 | $298K | −3.6% | Executive Chairman | |
Jan 13, 2026 | AI | Sell | 212,586 | $13.52 | $2.9M | −22.7% | Executive Chairman | |
Jan 13, 2026 | AI | Sell | 309,589 | $13.52 | $4.2M | −32.9% | Executive Chairman | |
Dec 17, 2025 | AI | Sell | 140,768 | $14.22 | $2.0M | −13.0% | Executive Chairman | |
Dec 16, 2025 | AI | Sell | 392,064 | $14.37 | $5.6M | −26.6% | Executive Chairman | |
Dec 12, 2025 | AI | Sell | 23,000 | $15.94 | $367K | −3.0% | Executive Chairman | |
Dec 2, 2025 | AI | Sell | 17,000 | $14.21 | $242K | −51.9% | Executive Chairman | |
Nov 11, 2025 | AI | Sell | 543,706 | $15.24 | $8.3M | −27.4% | Executive Chairman | |
Nov 3, 2025 | AI | Sell | 27,545 | $17.30 | $477K | −51.8% | Executive Chairman | |
Oct 14, 2025 | AI | Sell | 554,802 | $18.82 | $10.4M | −22.1% | Executive Chairman | |
Sep 16, 2025 | AI | Sell | 566,125 | $17.23 | $9.8M | −18.4% | Executive Chairman | |
Sep 12, 2025 | AI | Sell | 92,000 | $16.33 | $1.5M | −51.4% | Executive Chairman | |
Sep 2, 2025 | AI | Sell | 17,200 | $16.49 | $284K | −52.5% | Executive Chairman | |
Aug 12, 2025 | AI | Sell | 577,678 | $16.78 | $9.7M | −16.3% | CEO | |
Aug 4, 2025 | AI | Sell | 336,000 | $22.77 | $7.7M | −50.9% | CEO | |
Jul 18, 2025 | AI | Sell | 575,874 | $28.56 | $16.4M | −15.1% | CEO | |
Jul 18, 2025 | AI | Sell | 13,594 | $29.24 | $397K | −0.4% | CEO | |
Jun 11, 2025 | AI | Sell | 590,995 | $25.01 | $14.8M | −13.4% | CEO | |
Jun 11, 2025 | AI | Sell | 10,503 | $25.76 | $271K | −0.3% | CEO | |
Jun 2, 2025 | AI | Sell | 17,000 | $26.30 | $447K | −51.9% | 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.