SUTRO BIOPHARMA, INC. (STRO) has 20 open-market insider trades by 14 insiders since 2018. The most active filer is John Gordon Freund, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| John Gordon Freund | Dir | — | 3 | $14.2M | 2020-12-10 |
| Merck & Co., Inc. | 10% Owner | — | 1 | $10.0M | 2018-10-01 |
| William J. Newell | CEO | — | 2 | $577K | 2025-03-05 |
| Trevor Hallam | CSO | — | 3 | $362K | 2023-04-14 |
| Brunilda Shtylla | — | — | 2 | $252K | 2023-08-28 |
| Nicki Vasquez | — | — | 1 | $73K | 2024-01-29 |
| Arturo Molina M.D. | Chief Medical Officer | — | 1 | $50K | 2022-03-05 |
| Connie Matsui | Dir | — | 1 | $40K | 2025-10-15 |
| Linda A. Fitzpatrick | CHIEF PEOPLE & COMM. OFFICER | — | 1 | $25K | 2025-05-01 |
| Gregory K. Chow | CFO | — | 1 | $16K | 2026-06-02 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Jane Chung | CEO | Buy | $10K | 2025-10-15 |
| Connie Matsui | Director | Buy | $40K | 2025-10-15 |
| David Pauling | Chief Admin. Ofcr. & GC | Buy | $10K | 2025-10-15 |
| Gregory K. Chow | CFO | Buy | $16K | 2025-10-15 |
| Hans-Peter Gerber | CHIEF SCIENTIFIC OFFICER | Buy | $14K | 2025-10-15 |
| Nicki Vasquez | — | Sell | $61K | 2024-01-29 |
Companies that share insiders with STRO, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Brunilda Shtylla | — | Sell | $145K | 2023-08-28 |
| Brunilda Shtylla | — | Sell | $107K | 2023-08-25 |
| William J. Newell | CEO | Buy | $78K | 2022-03-14 |
| Nicki Vasquez | — | Sell | $145K | 2021-09-28 |
| Trevor Hallam | CSO | Sell | $119K | 2021-01-26 |
| Trevor Hallam | CSO | Sell | $107K | 2020-12-28 |
| Trevor Hallam | Chief Scientific Officer | Sell | $41K | 2020-11-27 |
| Trevor Hallam | CSO | Sell | $251K | 2020-11-05 |
| Trevor Hallam | Chief Scientific Officer | Sell | $10K | 2020-09-28 |