NewAmsterdam Pharma Co N.V. insider trading
NAMSW$12.650.00 (0.00%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-33.8%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| NAMSW | Michael H. Davidson | Open market purchase$227K | +0.9% | $22.65 | $227K | Sep 14, 2026 | Sep 15, 2026 |
| NAMSW | John W. Smither | Open market sell$40.5K | -15.4% | $25.32 | $40.5K | Sep 4, 2026 | Sep 9, 2026 |
| NAMSW | Louis G. Lange | Open market sell$13.9K | -4.1% | $31.23 | $13.9K | Mar 11, 2026 | Mar 12, 2026 |
| NAMSW | Louis G. Lange | Open market sell$1.34M | -80.4% | $30.41 | $1.34M | Mar 11, 2026 | Mar 12, 2026 |
| NAMSW | Louis G. Lange | Open market sell$829K | -33.9% | $29.41 | $829K | Mar 6, 2026 | Mar 10, 2026 |
| NAMSW | Johannes Jacob Pieter Kastelein | Open market sell$1.09M | -36.5% | $35.46 | $1.09M | Feb 20, 2026 | Feb 24, 2026 |
| NAMSW | Johannes Jacob Pieter Kastelein | Open market sell$514K | -14.8% | $35.00 | $514K | Feb 20, 2026 | Feb 24, 2026 |
| NAMSW | Michael H. Davidson | Open market sellNot reported | -3.0% | Not reported | Not reported | Jan 7, 2026 | Jan 9, 2026 |
| NAMSW | Johannes Jacob Pieter Kastelein | Open market sell$200K | -7.6% | $33.25 | $200K | Jan 5, 2026 | Jan 7, 2026 |
| NAMSW | Louise Frederika Kooij | Open market sell$88K | -17.7% | $33.25 | $88K | Jan 5, 2026 | Jan 7, 2026 |
| NAMSW | Mayur Ian Somaiya | Open market sell$170K | -13.5% | $33.25 | $170K | Jan 5, 2026 | Jan 7, 2026 |