sec filings
Insider trades
Open-market buys and sales that company insiders report to the SEC on .
Side
Planned sales
Role
NAMS
Updated 10/6/2026, 8:56 AM ET.
| Stock | Side | Value | Insider | Shares | Avg price | Filed | Tags | Filing |
|---|---|---|---|---|---|---|---|---|
| NAMS NewAmsterdam Pharma Co N.V. | Sale | $1,257,657 | Kastelein Johannes Jacob Pieter Chief Scientific Officer, Director | 50,246 sh | at $25.03 | Filed Oct 2, 4:30 PM ET | Filing | |
| NAMS NewAmsterdam Pharma Co N.V. | Buy | $226,500 | Davidson Michael H. Chief Executive Officer, Director | 10,000 sh | at $22.65 | Filed Sep 15, 4:30 PM ET | Filing | |
| NAMS NewAmsterdam Pharma Co N.V. | Sale | $40,512 | Smither John W Director | 1,600 sh | at $25.32 | Filed Sep 9, 4:30 PM ET | Filing | |
| NAMS NewAmsterdam Pharma Co N.V. | Sale | $3,363,750 | Kastelein Johannes Jacob Pieter Chief Scientific Officer, Director | 125,000 sh | at $26.91 | Filed Aug 25, 4:30 PM ET | Filing | |
| NAMS NewAmsterdam Pharma Co N.V. | Sale | $3,185,656 | Kooij Louise Frederika Chief Accounting Officer | 105,000 sh | at $30.34 | Filed Jul 22, 4:05 PM ET | Filing |