RA Capital Healthcare Fund LP, Director, 10% Owner at 89bio, Inc. (ETNB), bought 414,834 shares at $18.76 ($7.7M) on 2021-05-27, disclosed to the SEC on 2021-05-28.
Open-market purchase of $7.7M ETNB by Director, 10% Owner. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $18.03 | 48,377 | $872K | 11.3% |
| 2 | $18.03 | 48,377 | $872K | 11.3% |
| 3 | $18.76 | 35,535 | $667K | 8.6% |
| 4 | $18.76 | 35,535 | $667K | 8.6% |
| 5 | $18.77 | 123,505 | $2.3M | 30.1% |
| 6 | $18.77 | 123,505 |
| $2.3M |
| 30.1% |
| Total | $18.60 avg | 414,834 | $7.7M | 100% |
| Filing → |
| FULC | SELL | 2025-12-10 | $116.8M | — | Filing → |
| PEPG | BUY | 2025-09-30 | $30.0M | — | Filing → |
| TYRA | BUY | 2025-06-11 | $3.8M | — | Filing → |