NewAmsterdam Pharma Co N.V. (NAMS) has 34 open-market insider trades by 8 insiders since 2024. Over the last six months insiders net bought $186K. The most active filer is Louise Frederika Kooij, CAO.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Michael H. Davidson | CEO | — | 5 | $25.8M | 2026-09-14 |
| Louise Frederika Kooij | CAO | — | 9 | $22.9M | 2026-07-20 |
| Johannes Jacob Pieter Kastelein | CSO | — | 5 | $18.7M | 2026-09-30 |
| Mayur Ian Somaiya | CFO | — | 2 | $3.4M | 2026-01-21 |
| Louis G. Lange | Dir | — | 3 | $2.3M | 2026-03-11 |
| James N. Topper | Dir | — | 8 | $852K | 2025-09-15 |
| John W. Smither | Dir | — | 1 | $41K | 2026-09-04 |
| Juliette Berangere Audet | Chief Business Officer | — | 1 | $17K | 2025-01-07 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Johannes Jacob Pieter Kastelein | CSO | Sell | $1.3M | 2026-09-30 |
| Michael H. Davidson | CEO | Buy | $227K | 2026-09-14 |
| John W. Smither | Director | Sell | $41K | 2026-09-04 |
| Johannes Jacob Pieter Kastelein | CSO | Sell | $3.4M | 2026-08-24 |
| Louise Frederika Kooij | CAO | Sell | $3.2M | 2026-07-20 |
| Louise Frederika Kooij | CAO | Sell | $1.2M |
Companies that share insiders with NAMS, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2026-06-22 |
| Louise Frederika Kooij | CAO | Sell | $2.3M | 2026-05-26 |
| Louis G. Lange | Director | Sell | $1.4M | 2026-03-11 |
| Louis G. Lange | Director | Sell | $829K | 2026-03-06 |
| Johannes Jacob Pieter Kastelein | CSO | Sell | $9.1M | 2026-03-05 |
| Michael H. Davidson | CEO | Sell | $14.8M | 2026-03-02 |
| Michael H. Davidson | CEO | Sell | $10.6M | 2026-02-24 |
| Johannes Jacob Pieter Kastelein | CSO | Sell | $1.6M | 2026-02-20 |
| Louise Frederika Kooij | CAO | Sell | $2.3M | 2026-01-27 |
| Louise Frederika Kooij | CAO | Sell | $2.4M | 2026-01-23 |