Newamsterdam Pharma Co NV

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Newamsterdam Pharma Co NV
TickerNAMSW
CIK #0001936258
CUSIPN62509117
SectorLife Sciences - Pharmaceutical Preparations
AddressGooimeer 2-35, Narrden, 1411 DC
Source [EDGAR]
CIK Filing 2011 - 2026
[0001936258] 10-K
[0001936258] 10-Q
[0001936258] 3
[0001936258] 4
[0001936258] 6-K
[0001936258] 8-K
[0001936258] SC 13D
[0001936258] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
FMR LLC Newamsterdam Pharma Co NV [2026-02-05] 0.0
Capital World Investors Newamsterdam Pharma Co NV [2025-05-13] 0.0
Forbion Capital Fund IV Cooperatief UA Newamsterdam Pharma Co NV [2023-07-07] 8.1
Viking Global Investors LP Newamsterdam Pharma Co NV [2023-06-20] 7.98
Morningside Venture Investments Ltd Newamsterdam Pharma Co NV [2022-12-02] 6.21
Frazier Lifesciences Sponsor LLC Newamsterdam Pharma Co NV [2022-12-02] 4.9
Amgen Inc Newamsterdam Pharma Co NV [2022-12-02] 9.0
RA Capital Management LP Newamsterdam Pharma Co NV [2022-12-02] 5.29
BCLS II Investco LP Newamsterdam Pharma Co NV [2022-12-02] 4.9
Form 3/4/5 Filer 2011 - 2026
NewAmsterdam Pharma Co NV
Kooij Louise Frederika
Lange Louis G
Kastelein Johannes Jacob Pieter
Davidson Michael H
Somaiya Mayur Ian
McKenna Mark C
Gulfo Adele M
Lewis William
Smither John W
van der Kamp Hilde Johanna
Topper James N
Kling Douglas F
Marino Michael F III
Audet Juliette Berangere
Jones William A Jr
Forbion Capital Fund IV Cooperatief UA
Forbion Growth Opportunities Fund I Cooperatief UA
Forbion Growth Management BV
Forbion IV Management BV
ForGrowth Nap BV
Bain Capital Life Sciences Investors II LLC
Bain Capital Life Sciences Fund III LP
BCIP Life Sciences Associates LP
BCLS II Investco GP LLC
BCLS Fund III Investments GP LLC
Bain Capital Life Sciences Fund II LP
Bain Capital Life Sciences III General Partner LLC
BCLS Fund III Investments LP
Bain Capital Life Sciences Investors LLC
BCLS II Investco LP
Joustra Wouter
Downing Nicholas
Slootweg Hugo Alexander
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Lange Louis G
Ordinary Shares
2026-03-11 Sell 44,173 $30.41 1,343,301
Lange Louis G
Ordinary Shares
2026-03-11 Sell 446 $31.23 13,929
Lange Louis G
Warrant (right to buy) · derivative
2026-03-09 Option exercise 44,619 $0.00
Lange Louis G
Ordinary Shares
2026-03-09 Option exercise 44,619 $11.50 513,118
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-09 Sell 101,409 $30.29 3,071,679
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-09 Option exercise 101,409
Kastelein Johannes Jacob Pieter
Option (right to buy) · derivative
2026-03-09 Option exercise 101,409 $0.00
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-06 Sell 94,124 $30.32 2,853,840
Lange Louis G
Ordinary Shares
2026-03-06 Sell 28,186 $29.41 828,950
Kastelein Johannes Jacob Pieter
Option (right to buy) · derivative
2026-03-06 Option exercise 94,124 $0.00
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-06 Option exercise 94,124
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-05 Option exercise 104,467
Kastelein Johannes Jacob Pieter
Ordinary Shares
2026-03-05 Sell 104,467 $30.30 3,165,350
Kastelein Johannes Jacob Pieter
Option (right to buy) · derivative
2026-03-05 Option exercise 104,467 $0.00
Davidson Michael H
Ordinary Shares
2026-03-02 Option exercise 443,707
Davidson Michael H
Option (right to buy) · derivative
2026-03-02 Option exercise 443,707 $0.00
Davidson Michael H
Ordinary Shares
2026-03-02 Sell 443,707 $33.25 14,753,258
Davidson Michael H
Ordinary Shares
2026-02-26 Sell 165,408 $33.63 5,562,671
Davidson Michael H
Option (right to buy) · derivative
2026-02-26 Option exercise 183,332 $0.00
Davidson Michael H
Ordinary Shares
2026-02-26 Option exercise 183,332
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 10 1,364,689
2025-12-31 10 1,363,566
2025-09-30 10 1,364,890
2025-06-30 12 1,369,212
2025-03-31 12 1,372,351
2024-12-31 13 1,372,250
2024-09-30 13 1,369,499
2024-06-30 12 1,331,760
2024-03-31 13 1,474,096
2023-12-31 20 1,710,797
2023-09-30 21 1,680,578
2023-06-30 21 2,026,155
Form 13F Holdings
Firm Period DFND Voting Shares
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