Raymond Woo is CTO at Ceribell, Inc. (CBLL). They have made 6 open-market trades across 1 company since 2025, most recently 2026-10-01.
CIK 0002036112
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 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CBLL | 203,118 | $5.1M |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CBLL | SELL · 10b5-1 | 2026-10-01 | 2026-10-02 | $24.38 | $119K | +11.3% | — | — |
| CBLL | SELL · 10b5-1 | 2026-09-08 | 2026-09-10 | $24.33 | $119K | +4.3% | +8.7% | — |
| CBLL | SELL | 2026-08-21 | 2026-08-25 | $24.02 | $48K | +5.2% | +1.5% | — |
| CBLL | SELL | 2026-05-21 | 2026-05-26 | $18.00 | $35K | -1.8% | +6.1% | +28.8% |
| CBLL | SELL · 10b5-1 | 2026-05-01 | 2026-05-04 | $20.44 | $227K | -19.3% | -16.0% | -10.3% |
| CBLL | SELL · 10b5-1 | 2026-04-01 | 2026-04-03 | $18.56 | $206K | +11.0% | +9.4% | +5.6% |
| CBLL | SELL | 2026-03-02 | 2026-03-04 | $18.25 | $203K | +8.7% | +3.1% | -0.6% |
| CBLL | SELL | 2026-02-23 | 2026-02-25 | $19.79 | $14K | -2.9% | -5.6% | -0.2% |
| CBLL | SELL | 2026-02-02 | 2026-02-04 | $20.55 | $228K | -2.2% | -11.5% | +1.2% |
| CBLL | SELL | 2026-01-02 | 2026-01-06 | $21.18 | $235K | +0.9% | -11.1% | -16.5% |
| CBLL | SELL · 10b5-1 | 2025-12-01 | 2025-12-03 | $12.28 | $273K | +22.3% | +19.0% | -2.0% |
| CBLL | SELL · 10b5-1 | 2025-11-11 | 2025-11-13 | $12.28 | $273K | +39.9% | +76.6% | +65.9% |
| CBLL | SELL · 10b5-1 | 2025-10-03 | 2025-10-07 | $12.54 | $279K | +7.3% | -2.4% | +75.8% |
| CBLL | SELL · 10b5-1 | 2025-09-04 | 2025-09-08 | $12.11 | $269K | +4.1% | +1.4% | +67.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.