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NASDAQ: NAMS
Newamsterdam Pharma Co Nv Stock Ownership - Who owns Newamsterdam Pharma Co Nv?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Newamsterdam Pharma Co Nv insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
James N. TopperDirector2025-09-15660$23.70
$15.64kBuy
Louise Frederika KooijChief Accounting Officer2025-09-09150,000$10.00
$1.50MBuy
Louise Frederika KooijChief Accounting Officer2025-09-0996,896$26.11
$2.53MSell
Louise Frederika KooijChief Accounting Officer2025-09-0953,104$25.31
$1.34MSell
James N. TopperDirector2025-09-081,260$24.99
$31.49kBuy
Louise Frederika KooijChief Accounting Officer2025-09-0318,073$25.09
$453.45kSell
Louise Frederika KooijChief Accounting Officer2025-08-258,269$24.86
$205.57kSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2025-08-2242,342$25.08
$1.06MSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2025-08-227,658$25.49
$195.20kSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2025-08-2150,000$24.29
$1.21MSell

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Net Insider Buy/Sell (L12M) Ownership

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NAMS Shareholders

What type of owners hold Newamsterdam Pharma Co Nv stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Frazier Life Sciences Management LP14.73%16,701,956$581.23MInstitution
James N. Topper12.90%14,630,524$509.14MInsider
Bain Capital Life Sciences Investors LLC9.45%10,719,110$373.03MInstitution
Nap Bv Forgrowth9.40%10,656,172$370.83MInsider
Bain Capital Life Sciences Investors LLC9.24%10,473,913$364.49MInsider
Ra Capital Management LP8.94%10,138,938$352.84MInstitution
Capital World Investors8.66%9,822,711$341.83MInstitution
Fcpm III Services Bv8.12%9,212,384$320.59MInstitution
Viking Global Investors LP5.71%6,475,534$225.35MInstitution
Fmr LLC4.88%5,535,293$192.63MInstitution

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NAMS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
NAMS74.81%25.19%Net SellingNet Buying
TERN81.34%18.66%Net BuyingNet Selling
CNTA90.30%9.70%Net SellingNet Selling
IMVT48.27%51.73%Net BuyingNet Selling
ACLX51.42%48.58%Net SellingNet Selling
View Top Biotech Stocks

Newamsterdam Pharma Co Nv Stock Ownership FAQ

Who owns Newamsterdam Pharma Co Nv?

Newamsterdam Pharma Co Nv (NASDAQ: NAMS) is owned by 106.34% institutional shareholders, 35.81% Newamsterdam Pharma Co Nv insiders, and 0.00% retail investors. James N. Topper is the largest individual Newamsterdam Pharma Co Nv shareholder, owning 14.63M shares representing 12.90% of the company. James N. Topper's Newamsterdam Pharma Co Nv shares are currently valued at $520.99M.

If you're new to stock investing, here's how to buy Newamsterdam Pharma Co Nv stock.
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