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NAMS

NewAmsterdam Pharma Co N.V.
$34.90 +0.07 (+0.20%) At close · Jul 6
Market Cap
$4.08B
Shares
116,903,979

Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.

Filed Seller Shares
2026-03-11 Louis G. Lange 44,619
2026-03-06 Louis G. Lange 28,186
2026-03-05 Kastelein Johannes Jacob Pieter 300,000
2026-03-02 Michael H. Davidson 443,707
2026-02-24 Michael H. Davidson 750,000
2026-02-20 Kastelein Johannes Jacob Pieter 45,481
2026-01-20 Mayur Somaiya 200,000
2026-01-07 Michael Davidson 11,582
2026-01-06 Douglas F Kling 300,000
2026-01-05 Johannes Kastelein 6,000
2026-01-05 Mayur Ian Somaiya 5,118
2026-01-05 Louise Kooij 2,647
2025-12-23 Louise Kooij 290,000
2025-12-02 BCLS II Investco, LP 4,500,000
2025-12-02 BCIP Life Sciences Associates, LP 32,571
2025-12-02 Bain Capital Life Sciences Fund II, L.P. 267,429
2025-09-09 Louise Kooij 150,000
2025-09-03 Kooij Louise Frederika 18,073
2025-08-27 Kooij Louise Frederika 8,269
2025-08-25 Kastelein Johannes Jacob Pieter 100,000
2025-07-14 NAP PoolCo B.V. 1,433,193
2025-06-18 NAP PoolCo B.V. 303,197
2025-05-15 Douglas F Kling 298,612
2025-04-11 NAP PoolCo B.V. 1,433,193
2025-03-26 Michael H. Davidson 12,258
2025-03-26 Douglas F Kling 16,539
2025-03-04 Kooij Louise Frederika 150,000
2025-01-27 Douglas F Kling 500,000
2025-01-27 Mayur Somalya 200,000
2025-01-10 NAP PoolCo B.V. 1,396,241
2024-11-13 NAP PoolCo B.V. 1,553,759
2024-10-01 Kooij Louise Frederika 45,000
2024-03-26 Kastelein Johannes Jacob Pieter 190,476
Showing 1–33 of 33 filings
Key facts CIK 1936258 CUSIP N62509109 13F (30d) 4 filings 3 filers Visit website Investor relations