NEWAMSTERDAM PHARMA CO NV (NAMS) Stock Ownership

NASDAQ:NAMS • NL00150012L7

Current stock price

34.44 USD
-1.81 (-4.99%)
At close:
36.21 USD
+1.77 (+5.14%)
After Hours:

NAMS Ownership information

NAMS Ownership Chart.NAMS Ownership Chart: showing Insider, Institutional ownership and shares available to the public.NAMS Ownership.InsiderInstitutionalPublic



Shares Outstanding114.98M
Float96.87M
Float Short Interest Percentage8.31%
Owners (insider)0.96%
Owners (institutional)88.7%
Owners (insider) change17.54%
Owners (institutional) change0%
NAMS Institutional Ownership HistoryNAMS Institutional Ownership HistoryNAMS Institutional Ownership History Dec 2022 Mar 2023 Jun 2023 Sep 2023 Dec 2023 Mar 2024 Jun 2024 Sep 2024 Dec 2024 Mar 2025 Jun 2025 Sep 2025 Dec 2025 Mar 2026 20M 40M 60M 80M 100M
NAMS Historical Insider Transactions ChartNAMS Historical Insider Buy and Sell Transactions ChartNAMS Historical Insider Transactions May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 0 500K -500K
DateNameTypeSharesPriceAmount
Mar 11, 2026LANGE LOUIS GOpen Market Sale4461930.42$ 1,357,229.51
Mar 9, 2026LANGE LOUIS GOther Aquisition4461911.50$ 513,118.50
Mar 6, 2026LANGE LOUIS GOpen Market Sale2818629.41$ 828,950.26
Mar 5, 2026Kastelein Johannes Jacob PieterOption Excercise300000$ 0.00
Mar 5, 2026Kastelein Johannes Jacob PieterOpen Market Sale30000030.30$ 9,090,868.39
Mar 2, 2026Davidson Michael H.Open Market Sale44370733.25$ 14,753,257.75
Mar 2, 2026Davidson Michael H.Option Excercise443707$ 0.00
Feb 24, 2026Davidson Michael H.Option Excercise306293$ 0.00
Feb 24, 2026Davidson Michael H.Open Market Sale30629334.53$ 10,575,091.20
Feb 20, 2026Kastelein Johannes Jacob PieterOpen Market Sale4548135.31$ 1,605,997.94
Jan 27, 2026Kooij Louise FrederikaOption Excercise7242810.90$ 789,465.20
Jan 27, 2026Kooij Louise FrederikaOpen Market Sale7242832.25$ 2,335,859.52
Jan 23, 2026Kooij Louise FrederikaOption Excercise7257210.90$ 791,034.80
Jan 23, 2026Kooij Louise FrederikaOpen Market Sale7257233.29$ 2,415,843.11
Jan 20, 2026Somaiya Mayur IanOption Excercise1000009.26$ 926,000.00
Jan 20, 2026Somaiya Mayur IanOpen Market Sale10000032.61$ 3,260,617.98
Jan 7, 2026Kastelein Johannes Jacob PieterGrant25500$ 0.00
Jan 7, 2026Kooij Louise FrederikaGrant12000$ 0.00
Jan 7, 2026Somaiya Mayur IanGrant25500$ 0.00
Jan 7, 2026Davidson Michael H.Open Market Sale11582$ 0.00
Jan 7, 2026Davidson Michael H.Grant81000$ 0.00
Jan 7, 2026Lewis WilliamGrant3400$ 0.00
Jan 7, 2026Smither John WGrant3400$ 0.00
Jan 7, 2026McKenna Mark C.Grant3400$ 0.00
Jan 7, 2026van der Kamp Hilde JohannaGrant3400$ 0.00
Jan 7, 2026Gulfo Adele M.Grant3400$ 0.00
Jan 7, 2026LANGE LOUIS GGrant3400$ 0.00
Jan 5, 2026Kastelein Johannes Jacob PieterOpen Market Sale600033.25$ 199,500.00
Jan 5, 2026Kooij Louise FrederikaOpen Market Sale264733.25$ 88,012.75
Jan 5, 2026Somaiya Mayur IanOpen Market Sale511833.25$ 170,173.50
Dec 23, 2025Kooij Louise FrederikaOption Excercise14500010.03$ 1,454,500.00
Dec 23, 2025Kooij Louise FrederikaOpen Market Sale14500035.84$ 5,196,740.65
Sep 9, 2025Kooij Louise FrederikaOption Excercise15000010.00$ 1,500,000.00
Sep 9, 2025Kooij Louise FrederikaOpen Market Sale15000025.83$ 3,874,016.80
Sep 8, 2025Topper James NOpen Market Purchase126024.99$ 31,487.40
Sep 3, 2025Kooij Louise FrederikaOpen Market Sale1807325.09$ 453,451.57
Sep 2, 2025Kooij Louise FrederikaOption Excercise18073$ 0.00
Aug 25, 2025Kooij Louise FrederikaOpen Market Sale826924.86$ 205,567.34
Aug 21, 2025Kastelein Johannes Jacob PieterOpen Market Sale10000024.72$ 2,471,639.78
Aug 11, 2025Topper James NOpen Market Purchase47123.98$ 11,293.97
Jul 15, 2025Kling Douglas FOption Excercise9861210.90$ 1,074,870.80
Jul 15, 2025Kling Douglas FOpen Market Sale9861221.26$ 2,096,655.08
Jun 24, 2025Topper James NOpen Market Purchase378018.38$ 69,466.07
Jun 16, 2025Topper James NOpen Market Purchase858419.50$ 167,381.13
Jun 16, 2025Kling Douglas FOption Excercise10000010.20$ 1,019,709.10
Jun 16, 2025Kling Douglas FOpen Market Sale10000019.29$ 1,929,141.04
Jun 1, 2025Marino Michael F IIIGrant55000$ 0.00
Jun 1, 2025LANGE LOUIS GOption Excercise680.00$ 0.00
May 15, 2025Kling Douglas FOption Excercise10000010.00$ 1,000,000.00
May 15, 2025Kling Douglas FOpen Market Sale100000$ 0.00
May 1, 2025LANGE LOUIS GOption Excercise690.00$ 0.00