12 insiders reported 67 Form 4 transactions for 89bio, Inc. (ETNB) over the past 18 months (most recent 2025-11-03). Recent activity: Kolchinsky Peter (Director) Sell 19.6M shares, RA CAPITAL MANAGEMENT, L.P. (Director) Sell 19.6M shares, Shah Rajeev M. (Director) Sell 19.6M shares, RA Capital Nexus Fund, L.P. (Director) Sell 19.6M shares, RA Capital Healthcare Fund LP (Director) Sell 19.6M shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-11-03 | Kolchinsky Peter | Director | Sell | 19.6M | $0 |
| 2025-11-03 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 19.6M | $0 |
| 2025-11-03 | Shah Rajeev M. | Director | Sell | 19.6M | $0 |
| 2025-11-03 | RA Capital Nexus Fund, L.P. | Director | Sell | 19.6M | $0 |
| 2025-11-03 | RA Capital Healthcare Fund LP | Director | Sell | 19.6M | $0 |
| 2025-11-03 | RA Capital Nexus Fund, L.P. | Director | Sell | 335,364 | $0 |
| 2025-11-03 | RA Capital Healthcare Fund LP | Director | Sell | 335,364 | $0 |
| 2025-11-03 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 335,364 | $0 |
| 2025-11-03 | Kolchinsky Peter | Director | Sell | 335,364 | $0 |
| 2025-11-03 | Shah Rajeev M. | Director | Sell | 335,364 | $0 |
| 2025-10-30 | Le-Nguyen Quoc | See Remarks | Sell | 13,694 | $0 |
| 2025-10-30 | Le-Nguyen Quoc | See Remarks | Sell | 351,684 | $0 |
| 2025-10-30 | Le-Nguyen Quoc | See Remarks | Buy | 50,000 | $0 |
| 2025-10-30 | Mansbach Harry H | Chief Medical Officer | Buy | 50,000 | $0 |
| 2025-10-30 | Mansbach Harry H | Chief Medical Officer | Sell | 352,656 | $0 |
| 2025-10-30 | Sarena Francis Willard | Chief Operating Officer | Sell | 75,310 | $0 |
| 2025-10-30 | Martins Ryan | Chief Financial Officer | Buy | 35,000 | $0 |
| 2025-10-30 | Martins Ryan | Chief Financial Officer | Sell | 374,295 | $0 |
| 2025-10-30 | PALEKAR ROHAN | Chief Executive Officer | Buy | 125,000 | $0 |
| 2025-10-30 | PALEKAR ROHAN | Chief Executive Officer | Sell | 934,273 | $0 |
| 2025-10-30 | Hayden Michael R | Director | Sell | 80,904 | $0 |
| 2025-10-30 | Hayden Michael R | Director | Sell | 103,978 | $0 |
| 2025-10-30 | Hayden Michael R | Director | Sell | 61,538 | $0 |
| 2025-10-30 | McWherter Charles | Director | Sell | 25,000 | $0 |
| 2025-10-23 | Martins Ryan | Chief Financial Officer | Buy | 76,901 | $239,162 |
Source: SEC Form 4 filings · as of 2025-11-03
