KASTELEIN JOHANNES JACOB PIETER (Chief Scientific Officer) sold 45.9% of their position (45.48K shares) of NEWAMSTERDAM PHARMA CO N.V. on the open market
Open‑market sale worth $1.61M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 2/24/2026ACC: 0001193125-26-067260
DirectorOfficer· Chief Scientific Officer
Since Mar 2026
-45.48K
Net shares
Net seller
$1.61M
Total sold
2
Open market trades
0B · 2S
2
Total transactions
45.48K disposed
Non-Derivative Transactions2
Ordinary Shares
Direct
Shares
−14.69K
Price / share
$35.00
Trade value
$514.22K
% of position
14.8%
2/20/2026
98.98K→84.29K
Ordinary Shares
Direct
Shares
−30.79K
Price / share
$35.46
Trade value
$1.09M
% of position
36.5%
2/20/2026
84.29K→53.50K
Total
Net shares
−45.48K
Net value
-$1.61M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares Direct | 2/20/2026 | S · Sale | −14.69K | $35.00 | $514.22K | 14.8% | 98.98K | 84.29K |
| Ordinary Shares Direct | 2/20/2026 | S · Sale | −30.79K | $35.46 | $1.09M | 36.5% | 84.29K | 53.50K |
| Total | −45.48K | -$1.61M | ||||||
Derivative Transactions0
No derivative transactions reported