Thomas M. Siebel is CEO at C3.ai, Inc. (AI). They have made 23 open-market trades across 1 company since 2021, most recently 2026-09-16.
CIK 0001031530
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 23 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AI | 722,362 | $8.2M |
Shares reported on the most recent Form 4, priced at the 2026-09-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 77% | 54% | 60% |
| Avg Move | -3.5% | -0.6% | -4.7% |
| Scored | 13 | 13 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AI | SELL · 10b5-1 | 2026-09-15 | 2026-09-17 | $10.77 | $4.8M | -4.6% | — | — |
| AI | SELL | 2026-09-14 | 2026-09-15 | $10.56 | $241K | +0.2% | +13.9% | — |
| AI | SELL | 2026-09-02 | 2026-09-03 | $10.30 | $174K | -1.9% | +3.2% | — |
| AI | SELL · 10b5-1 | 2026-08-11 | 2026-08-13 | $10.51 | $4.8M | -4.3% | +8.9% | — |
| AI | SELL | 2026-08-03 | 2026-08-04 | $9.61 | $1.3M | -0.9% | +8.7% | — |
| AI | SELL · 10b5-1 | 2026-07-14 | 2026-07-16 | $9.18 | $4.2M | +1.7% | +10.6% | +33.3% |
| AI | SELL · 10b5-1 | 2026-06-12 | 2026-06-15 | $11.10 | $5.5M | -18.3% | -16.1% | +2.5% |
| AI | SELL | 2026-06-02 | 2026-06-03 | $11.32 | $196K | -1.6% | -17.6% | -7.8% |
| AI | SELL · 10b5-1 | 2026-05-15 | 2026-05-19 | $8.70 | $4.2M | +34.8% | +18.3% | +11.2% |
| AI | SELL | 2026-05-04 | 2026-05-05 | $9.27 | $252K | -7.3% | +13.4% | +4.5% |
| AI | SELL · 10b5-1 | 2026-04-13 | 2026-04-15 | $8.37 | $4.1M | -8.9% | -10.5% | -5.2% |
| AI | SELL · 10b5-1 | 2026-03-17 | 2026-03-19 | $8.78 | $4.4M | -1.9% | +9.3% | +20.0% |
| AI | SELL | 2026-03-12 | 2026-03-13 | $9.11 | $213K | -8.0% | -5.9% | +25.2% |
| AI | SELL | 2026-03-02 | 2026-03-03 | $7.79 | $138K | -2.9% | -5.9% | +28.1% |
| AI | SELL · 10b5-1 | 2026-02-10 | 2026-02-12 | $11.66 | $6.0M | -2.7% | -17.0% | -18.4% |
| AI | SELL | 2026-02-02 | 2026-02-03 | $10.81 | $298K | +1.4% | -11.7% | -13.3% |
| AI | SELL · 10b5-1 | 2026-01-13 | 2026-01-15 | $13.52 | $7.1M | -3.3% | -23.4% | -29.9% |
| AI | SELL · 10b5-1 | 2025-12-16 | 2025-12-18 | $14.33 | $15.3M | -2.4% | -9.6% | -37.7% |
| AI | SELL | 2025-12-12 | 2025-12-15 | $15.94 | $367K | -2.8% | -3.3% | -38.8% |
| AI | SELL | 2025-12-02 | 2025-12-03 | $14.21 | $242K | -2.0% | -8.0% | -39.1% |
| AI | SELL · 10b5-1 | 2025-11-11 | 2025-11-12 | $15.24 | $16.6M | -7.4% | +4.6% | -21.4% |
| AI | SELL | 2025-11-03 | 2025-11-04 | $17.30 | $953K | -11.2% | -3.3% | -31.1% |
| AI | SELL · 10b5-1 | 2025-10-14 | 2025-10-16 | $18.82 | $20.9M | +2.0% | -24.3% | -21.6% |
| AI | SELL · 10b5-1 | 2025-09-16 | 2025-09-17 | $17.23 | $19.5M | -2.1% | +0.1% | -18.1% |
| AI | SELL | 2025-09-12 | 2025-09-15 | $16.33 | $3.0M | -1.3% | +10.1% | -16.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.