S
Stockadora
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NAMS

UNKNOWN

NewAmsterdam Pharma Co N.V.

CIK: 0001936258

Strong Sell (90% confidence)

Last activity: 3 weeks ago

Financial Metrics

As of Dec 31, 2025 (10-K)

Insider Roster (5 total, 5 active)

Insider Buys Sells Net Value Holdings
Davidson Michael H.
Chief Executive Officer
 		0 9 -$25.33M
174,144 shares
$5.79M
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
 		0 6 -$10.90M
69,302 shares
$2.10M
Kooij Louise Frederika
Chief Accounting Officer
 		0 10 -$10.04M
24,353 shares
$774K
Somaiya Mayur Ian
Chief Financial Officer
 		0 6 -$3.43M
58,382 shares
$1.97M
LANGE LOUIS G
OTHER
 		0 3 -$2.19M
10,806 shares
$329K

Recent Transactions

SELL LANGE LOUIS G (OTHER)

44,173 shares @ $30.41

$1.34M

Mar 11, 2026

Conviction: | View SEC Filing →
SELL LANGE LOUIS G (OTHER)

446 shares @ $31.23

$14K

Mar 11, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

101,409 shares @ $30.29

$3.07M

Mar 9, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

94,124 shares @ $30.32

$2.85M

Mar 6, 2026

Conviction: | View SEC Filing →
SELL LANGE LOUIS G (OTHER)

28,186 shares @ $29.41

$829K

Mar 6, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

104,467 shares @ $30.30

$3.17M

Mar 5, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

443,707 shares @ $33.25

$14.75M

Mar 2, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

165,408 shares @ $33.63

$5.56M

Feb 26, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

17,924 shares @ $34.44

$617K

Feb 26, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

46,517 shares @ $35.11

$1.63M

Feb 25, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

10,436 shares @ $35.96

$375K

Feb 25, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

1,300 shares @ $36.68

$48K

Feb 25, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

61,547 shares @ $36.13

$2.22M

Feb 24, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

3,161 shares @ $36.46

$115K

Feb 24, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

30,789 shares @ $35.46

$1.09M

Feb 20, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

14,692 shares @ $35.00

$514K

Feb 20, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

32,612 shares @ $31.80

$1.04M

Jan 28, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

39,816 shares @ $32.62

$1.30M

Jan 27, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

34,091 shares @ $32.77

$1.12M

Jan 26, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

309 shares @ $33.45

$10K

Jan 26, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

25,405 shares @ $33.44

$850K

Jan 23, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

12,767 shares @ $34.37

$439K

Jan 23, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

24,362 shares @ $33.80

$823K

Jan 21, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

15,422 shares @ $33.25

$513K

Jan 21, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

39,712 shares @ $31.78

$1.26M

Jan 20, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

19,604 shares @ $32.38

$635K

Jan 20, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

900 shares @ $30.64

$28K

Jan 20, 2026

Conviction: | View SEC Filing →
SELL Davidson Michael H. (Chief Executive Officer)

11,582 shares

$0

Jan 7, 2026

Conviction: | View SEC Filing →
SELL Kastelein Johannes Jacob Pieter (Chief Scientific Officer)

6,000 shares @ $33.25

$200K

Jan 5, 2026

Conviction: | View SEC Filing →
SELL Somaiya Mayur Ian (Chief Financial Officer)

5,118 shares @ $33.25

$170K

Jan 5, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

2,647 shares @ $33.25

$88K

Jan 5, 2026

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

43,872 shares @ $35.30

$1.55M

Dec 26, 2025

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

26,011 shares @ $35.68

$928K

Dec 24, 2025

Conviction: | View SEC Filing →
SELL Kooij Louise Frederika (Chief Accounting Officer)

75,117 shares @ $36.21

$2.72M

Dec 23, 2025

Conviction: | View SEC Filing →

⚠️ Important Disclaimer

• This is AI-generated analysis for educational purposes only, not financial advice.

• Insider trading data is derived from SEC Form 4 filings and may contain errors.

• Always conduct your own research and consult qualified financial advisors before making investment decisions.