Scott Blumberg is CFO at Ceribell, Inc. (CBLL). They have made 3 open-market trades across 1 company since 2025, most recently 2026-09-15.
CIK 0002035786
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 3 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CBLL | 146,600 | $3.7M |
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.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CBLL | SELL · 10b5-1 | 2026-09-15 | 2026-09-17 | $25.00 | $21K | -0.1% | — | — |
| CBLL | SELL · 10b5-1 | 2026-09-02 | 2026-09-04 | $25.00 | $16K | +3.8% | +3.1% | — |
| CBLL | SELL | 2026-08-21 | 2026-08-25 | $24.02 | $37K | +5.2% | +1.5% | — |
| CBLL | SELL · 10b5-1 | 2026-08-18 | 2026-08-20 | $25.03 | $864K | +2.2% | +0.8% | — |
| CBLL | SELL | 2026-05-21 | 2026-05-26 | $18.00 | $25K | -1.8% | +6.1% | +28.8% |
| CBLL | SELL | 2026-02-23 | 2026-02-25 | $19.79 | $16K | -2.9% | -5.6% | -0.2% |
| CBLL | SELL · 10b5-1 | 2025-12-22 | 2025-12-29 | $21.00 | $756K | +9.4% | -3.7% | -16.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.