Zenas BioPharma, Inc. (ZBIO) has 27 open-market insider trades by 10 insiders since 2024. Over the last six months insiders net bought $2.1M. The most active filer is Leon O. Moulder Jr., CEO.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| SR ONE Capital Management, LLC | 10% Owner | — | 2 | $24.2M | 2025-10-09 |
| Zebra Aggregator, LP | 10% Owner | — | 1 | $15.0M | 2024-09-16 |
| Peter Evan Harwin | Dir | — | 2 | $11.1M | 2025-10-07 |
| Patrick G. Enright | Dir | — | 2 | $10.0M | 2025-10-09 |
| Jason Raleigh Nunn | Dir | — | 2 | $8.7M | 2025-10-09 |
| Leon O. Moulder Jr. | CEO | — | 10 | $8.7M | 2026-05-18 |
| Hongbo Lu | Dir | — | 5 | $8.2M | 2026-03-31 |
| Fairmount Funds Management LLC | Dir | — | 1 | $3.0M | 2026-03-31 |
| Patricia L. Allen | Dir | — | 1 | $500K | 2026-02-13 |
| Ting Xiao | Dir | — | 1 | $78K | 2025-02-07 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Leon O. Moulder Jr. | CEO | Buy | $1.0M | 2026-05-18 |
| Leon O. Moulder Jr. | CEO | Buy | $1.1M | 2026-04-28 |
| Hongbo Lu | Director | Buy | $1.5M | 2026-03-31 |
| Hongbo Lu | Director | Buy | $70K | 2026-03-31 |
| Fairmount Funds Management LLC | Director | Buy | $3.0M | 2026-03-31 |
| Leon O. Moulder Jr. | CEO | Buy | $1.0M | 2026-03-30 |
Companies that share insiders with ZBIO, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Patricia L. Allen | Director | Buy | $500K | 2026-02-12 |
| Hongbo Lu | Director | Buy | $585K | 2026-02-11 |
| Leon O. Moulder Jr. | CEO | Buy | $1.0M | 2026-02-02 |
| Leon O. Moulder Jr. | CEO | Buy | $1.6M | 2026-01-07 |
| Patrick G. Enright | Director | Buy | $2.5M | 2025-10-09 |
| Jason Raleigh Nunn | Director | Buy | $1.2M | 2025-10-09 |
| SR ONE Capital Management, LLC | 10% Owner | Buy | $1.2M | 2025-10-09 |
| Hongbo Lu | Director | Buy | $5.0M | 2025-10-07 |
| Peter Evan Harwin | Director | Buy | $6.0M | 2025-10-07 |