KOOIJ LOUISE FREDERIKA

PrivateCIK: 2004379
Location

NAARDEN, P7

KOOIJ LOUISE FREDERIKA (Chief Accounting Officer) sold 62.2% of their position (40K shares) of NEWAMSTERDAM PHARMA CO N.V. on the open market

Open‑market sale worth $1.21M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderKOOIJ LOUISE FREDERIKACIK 2004379
Officer· Chief Accounting Officer
Since Jan 2026
-40K
Net shares
Net seller
$1.21M
Total sold
2
Open market trades
0B · 2S
6
Total transactions
40K acquired · 80K disposed
Non-Derivative Transactions4

Ordinary Shares

Direct
M · Option Exercise

Shares

+25K

Price / share

$10.90

Trade value

$272.50K

% of position

102.7%
6/22/2026
24.35K49.35K

Ordinary Shares

Direct
M · Option Exercise

Shares

+15K

Price / share

$11.90

Trade value

$178.50K

% of position

30.4%
6/22/2026
49.35K64.35K

Ordinary Shares

Direct
S · Sale

Shares

39.70K

Price / share

$30.20

Trade value

$1.20M

% of position

61.7%
6/22/2026
64.35K24.65K

Ordinary Shares

Direct
S · Sale

Shares

300.00

Price / share

$30.73

Trade value

$9.22K

% of position

1.2%
6/22/2026
24.65K24.35K
Total

Net shares

+0.00

Net value

-$757.16K

Derivative Transactions2

Option (right to buy)

Direct
M · Option Exercise
Converts to

Ordinary Shares

25K shares

Shares

25K

Strike price

10.90

Held after

43.13K

Exercisable

6/22/2026

Option (right to buy)

Direct
M · Option Exercise
Converts to

Ordinary Shares

15K shares

Shares

15K

Strike price

11.9

Held after

35K

Exercisable

6/22/2026