NewAmsterdam Pharma Company N.V.

Estimated for Congress, as filed for insiders · by filing month · past 24 months

LK Louise Frederika Kooij Chief Accounting Officer 10 filings · 0 buys, 10 sales DK Douglas F Kling Chief Operating Officer 9 filings · 0 buys, 9 sales JK Johannes Jacob Pieter Kastelein Chief Scientific Officer 6 filings · 0 buys, 6 sales MD Michael H. Davidson Chief Executive Officer 5 filings · 1 buy, 4 sales NF NAP B.V. ForGrowth 10% owner 3 filings · 0 buys, 3 sales FV Forbion IV Management B.V. 10% owner 3 filings · 0 buys, 3 sales MS Mayur Ian Somaiya Chief Financial Officer 3 filings · 0 buys, 3 sales FA Forbion Capital Fund IV Cooperatief U.A. 10% owner 2 filings · 0 buys, 2 sales

All 11 filers

LL Louis G Lange Director 2 filings · 0 buys, 2 sales FV Forbion Growth Management B.V. 10% owner 1 filing · 0 buys, 1 sale JT James N Topper Director 1 filing · 1 buy, 0 sales

Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $1.3M
50,246 sh × $25.03
Exec Sep 30
Filed Oct 2 · 4:30 PM ET Michael H. DavidsonPURCHASE Chief Executive Officer $226K
10,000 sh × $22.65
Exec Sep 14
Filed Sep 15 · 4:30 PM ET Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $3.4M
125,000 sh × $26.91
Exec Aug 24
Filed Aug 25 · 4:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $3.1M
102,085 sh across 2 lots
Exec Jul 20
Filed Jul 22 · 4:05 PM ET Louise Frederika KooijSALE Chief Accounting Officer $1.2M
39,700 sh × $30.20
Exec Jun 22
Filed Jun 24 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $2.3M
65,000 sh × $35.69
Exec May 26
Filed May 27 · 5:30 PM ET Louis G LangeSALE Director $1.3M
44,173 sh × $30.41
Exec Mar 11
Filed Mar 12 · 5:30 PM ET Louis G LangeSALE Director $829K
28,186 sh × $29.41
Exec Mar 6
Filed Mar 10 · 5:30 PM ET Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $9.1M
300,000 sh across 3 lots
Exec Mar 5
Filed Mar 9 · 5:30 PM ET Michael H. DavidsonSALE Chief Executive Officer $14.8M
443,707 sh × $33.25
Exec Mar 2
Filed Mar 2 · 5:30 PM ET Michael H. DavidsonSALE Chief Executive Officer $10.5M
304,993 sh across 6 lots
Exec Feb 24
Filed Feb 26 · 5:30 PM ET Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $1.6M
45,481 sh across 2 lots
Exec Feb 20
Filed Feb 24 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $2.3M
72,428 sh across 2 lots
Exec Jan 27
Filed Jan 29 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $2.4M
72,263 sh across 3 lots
Exec Jan 23
Filed Jan 27 · 5:30 PM ET Mayur Ian SomaiyaSALE Chief Financial Officer $3.2M
99,100 sh across 4 lots
Exec Jan 20
Filed Jan 22 · 5:30 PM ET Michael H. DavidsonSALE Chief Executive Officer $411K
as filed
Exec Jan 7
Filed Jan 9 · 5:30 PM ET Mayur Ian SomaiyaSALE Chief Financial Officer $170K
5,118 sh × $33.25
Exec Jan 5
Filed Jan 7 · 5:30 PM ET Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $200K
6,000 sh × $33.25
Exec Jan 5
Filed Jan 7 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $5.2M
145,000 sh across 3 lots
Exec Dec 23 2025
Filed Dec 29 2025 · 5:30 PM ET † Louise Frederika KooijSALE Chief Accounting Officer $3.9M
150,000 sh across 2 lots
Exec Sep 9 2025
Filed Sep 10 2025 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $453K
18,073 sh × $25.09
Exec Sep 3 2025
Filed Sep 5 2025 · 5:30 PM ET Louise Frederika KooijSALE Chief Accounting Officer $206K
8,269 sh × $24.86
Exec Aug 25 2025
Filed Aug 27 2025 · 5:30 PM ET Johannes Jacob Pieter KasteleinSALE Chief Scientific Officer $2.5M
100,000 sh across 3 lots
Exec Aug 21 2025
Filed Aug 25 2025 · 5:30 PM ET Douglas F KlingSALE Chief Operating Officer $2.0M
95,068 sh across 2 lots
Exec Jul 15 2025
Filed Jul 17 2025 · 5:30 PM ET Douglas F KlingSALE Chief Operating Officer $1.9M
100,000 sh across 2 lots
Exec Jun 16 2025
Filed Jun 18 2025 · 5:30 PM ET