KOOIJ LOUISE FREDERIKA

PrivateCIK: 2004379
Location

NAARDEN, P7

KOOIJ LOUISE FREDERIKA (Chief Accounting Officer) sold 81.2% of their position (105K shares) of NEWAMSTERDAM PHARMA CO N.V. on the open market

Open‑market sale worth $3.19M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales
InsiderKOOIJ LOUISE FREDERIKACIK 2004379
Officer· Chief Accounting Officer
Since Jan 2026
-105K
Net shares
Net seller
$3.19M
Total sold
3
Open market trades
0B · 3S
7
Total transactions
105K acquired · 210K disposed
Non-Derivative Transactions5

Ordinary Shares

Direct
M · Option Exercise

Shares

+25K

Price / share

$11.90

Trade value

$297.50K

% of position

102.7%
7/20/2026
24.35K49.35K

Ordinary Shares

Direct
M · Option Exercise

Shares

+80K

Price / share

$11.17

Trade value

$893.60K

% of position

162.1%
7/20/2026
49.35K129.35K

Ordinary Shares

Direct
S · Sale

Shares

70.20K

Price / share

$29.96

Trade value

$2.10M

% of position

54.3%
7/20/2026
129.35K59.15K

Ordinary Shares

Direct
S · Sale

Shares

31.89K

Price / share

$31.05

Trade value

$990.03K

% of position

53.9%
7/20/2026
59.15K27.27K

Ordinary Shares

Direct
S · Sale

Shares

2.92K

Price / share

$31.71

Trade value

$92.43K

% of position

10.7%
7/20/2026
27.27K24.35K
Total

Net shares

+0.00

Net value

-$1.99M

Derivative Transactions2

Option (right to buy)

Direct
M · Option Exercise
Converts to

Ordinary Shares

25K shares

Shares

25K

Strike price

11.9

Held after

10K

Exercisable

7/20/2026

Option (right to buy)

Direct
M · Option Exercise
Converts to

Ordinary Shares

80K shares

Shares

80K

Strike price

11.17

Held after

70.49K

Exercisable

7/20/2026