KOOIJ LOUISE FREDERIKA (Chief Accounting Officer) sold 72.7% of their position (65K shares) of NEWAMSTERDAM PHARMA CO N.V. on the open market
Open‑market sale worth $2.32M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 5/27/2026ACC: 0001193125-26-241983
Officer· Chief Accounting Officer
Since Jan 2026
-65K
Net shares
Net seller
$2.32M
Total sold
1
Open market trades
0B · 1S
5
Total transactions
65K acquired · 130K disposed
Non-Derivative Transactions3
Ordinary Shares
Direct
Shares
+60K
Price / share
$10.00
Trade value
$600K
% of position
246.4%
5/26/2026
24.35K→84.35K
Ordinary Shares
Direct
Shares
+5K
Price / share
$10.90
Trade value
$54.50K
% of position
5.9%
5/26/2026
84.35K→89.35K
Ordinary Shares
Direct
Shares
−65K
Price / share
$35.69
Trade value
$2.32M
% of position
72.7%
5/26/2026
89.35K→24.35K
Total
Net shares
+0.00
Net value
-$1.67M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares Direct | 5/26/2026 | M · Option Exercise | +60K | $10.00 | $600K | 246.4% | 24.35K | 84.35K |
| Ordinary Shares Direct | 5/26/2026 | M · Option Exercise | +5K | $10.90 | $54.50K | 5.9% | 84.35K | 89.35K |
| Ordinary Shares Direct | 5/26/2026 | S · Sale | −65K | $35.69 | $2.32M | 72.7% | 89.35K | 24.35K |
| Total | +0.00 | -$1.67M | ||||||
Derivative Transactions2
Option (right to buy)
Direct
Converts to
Ordinary Shares
60K shares
Shares
−60K
Strike price
10.00
Held after
80.02K
Exercisable
—
5/26/2026
Option (right to buy)
Direct
Converts to
Ordinary Shares
5K shares
Shares
−5K
Strike price
10.90
Held after
68.13K
Exercisable
—
5/26/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Option (right to buy) Direct | Ordinary Shares60K shares | 5/26/2026 | M · Option Exercise | −60K | 10.00 | — | 80.02K |
| Option (right to buy) Direct | Ordinary Shares5K shares | 5/26/2026 | M · Option Exercise | −5K | 10.90 | — | 68.13K |