Boundless Bio, Inc. (BOLD) has 60 open-market insider trades by 19 insiders since 2016. Over the last six months insiders net bought $1.4M. The most active filer is Louis G. Lange, Director.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Orbimed Advisors LLC | 10% Owner | — | 1 | $30.4M | 2018-03-06 |
| Samuel D. Isaly | 10% Owner | — | 1 | $19.0M | 2017-09-29 |
| OrbiMed Capital GP IV LLC | 10% Owner | — | 2 | $10.3M | 2018-03-12 |
| Louis G. Lange | Dir | — | 13 | $9.1M | 2020-01-15 |
| Matthew R. Patterson | CEO | — | 10 | $7.8M | 2020-01-15 |
| James E. Flynn | 10% Owner | — | 1 | $6.0M | 2016-07-25 |
| Peter Kolchinsky | 10% Owner | — | 1 | $5.0M | 2024-04-02 |
| 5AM Partners III, LLC | — | — | 2 | $3.6M | 2017-04-24 |
| Steven Gillis | 10% Owner | — | 1 | $3.2M | 2024-04-02 |
| Kristina Burow | Dir10% Owner | — | 1 | $3.2M | 2024-04-02 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Kevin Tang | 10% Owner | Sell | $54K | 2026-08-26 |
| Kevin Tang | 10% Owner | Buy | $12K | 2026-07-17 |
| Kevin Tang | 10% Owner | Buy | $156K | 2026-07-14 |
| Kevin Tang | 10% Owner | Buy | $222K | 2026-07-09 |
| Kevin Tang | 10% Owner | Buy | $142K | 2026-07-06 |
| Keith Crandell | 10% Owner | Sell | $40K | 2026-07-01 |
Companies that share insiders with BOLD, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Kevin Tang | 10% Owner | Buy | $269K | 2026-06-30 |
| Kevin Tang | 10% Owner | Buy | $715K | 2026-06-25 |
| Steven Gillis | 10% Owner | Buy | $3.2M | 2024-04-02 |
| Peter Kolchinsky | 10% Owner | Buy | $5.0M | 2024-04-02 |
| Louis G. Lange | Director | Sell | $656K | 2019-12-23 |
| Matthew R. Patterson | CEO | Sell | $433K | 2019-11-08 |
| Louis G. Lange | Director | Sell | $667K | 2019-09-23 |
| Matthew R. Patterson | CEO | Sell | $1.3M | 2019-08-12 |
| Louis G. Lange | Director | Sell | $1.5M | 2019-06-24 |