KOOIJ LOUISE FREDERIKA (Chief Accounting Officer) sold 90.9% of their position (150K shares) of NEWAMSTERDAM PHARMA CO N.V. on the open market
Open‑market sale worth $3.87M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 9/10/2025ACC: 0000950170-25-114033
Officer· Chief Accounting Officer
Since Jan 2026
-150K
Net shares
Net seller
$3.87M
Total sold
2
Open market trades
0B · 2S
4
Total transactions
150K acquired · 300K disposed
Non-Derivative Transactions3
Ordinary Shares
Direct
Shares
+150K
Price / share
$10.00
Trade value
$1.50M
% of position
1000.0%
9/9/2025
15K→165K
Ordinary Shares
Direct
Shares
−53.10K
Price / share
$25.31
Trade value
$1.34M
% of position
32.2%
9/9/2025
165K→111.90K
Ordinary Shares
Direct
Shares
−96.90K
Price / share
$26.11
Trade value
$2.53M
% of position
86.6%
9/9/2025
111.90K→15K
Total
Net shares
+0.00
Net value
-$2.37M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares Direct | 9/9/2025 | M · Option Exercise | +150K | $10.00 | $1.50M | 1000.0% | 15K | 165K |
| Ordinary Shares Direct | 9/9/2025 | S · Sale | −53.10K | $25.31 | $1.34M | 32.2% | 165K | 111.90K |
| Ordinary Shares Direct | 9/9/2025 | S · Sale | −96.90K | $26.11 | $2.53M | 86.6% | 111.90K | 15K |
| Total | +0.00 | -$2.37M | ||||||
Derivative Transactions1
Option (right to buy)
Direct
Converts to
Ordinary Shares
150K shares
Shares
−150K
Strike price
10.00
Held after
280.01K
Exercisable
—
9/9/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Option (right to buy) Direct | Ordinary Shares150K shares | 9/9/2025 | M · Option Exercise | −150K | 10.00 | — | 280.01K |