Ryan Martins is CFO at 89bio, Inc. (ETNB). They have made 4 open-market trades across 1 company since 2021, most recently 2025-10-30.
CIK 0001792018
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 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ETNB | 374,295 | $5.6M |
Shares reported on the most recent Form 4, priced at the 2025-10-30 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ETNB | SELL | 2023-04-04 | 2023-04-06 | $14.95 | $261K | +18.3% | +17.5% | +28.9% |
| ETNB | SELL | 2023-03-23 | 2023-03-27 | $16.11 | $81K | -8.5% | -5.0% | +17.7% |
| ETNB | SELL · 10b5-1 | 2023-02-21 | 2023-02-22 | $13.89 | $35K | +2.3% | +18.5% | +22.7% |
| ETNB | SELL · 10b5-1 | 2023-02-08 | 2023-02-10 | $14.41 | $21K | -3.5% | -9.7% | +25.8% |
| ETNB | SELL · 10b5-1 | 2023-02-03 | 2023-02-07 | $13.04 | $47K | -3.1% | -11.5% | +20.7% |
| ETNB | SELL | 2023-01-03 | 2023-01-05 | $12.51 | $149K | -11.5% | +16.5% | +18.6% |
| ETNB | SELL | 2021-04-19 | 2021-04-20 | $25.00 | $250K | -3.6% | -18.8% | -37.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.