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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 Officer2025-09-0953,104$25.31
$1.34MSell
Louise Frederika KooijChief Accounting Officer2025-09-09150,000$10.00
$1.50MBuy
Louise Frederika KooijChief Accounting Officer2025-09-0996,896$26.11
$2.53MSell
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 Officer2025-08-227,658$25.49
$195.20kSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2025-08-2242,342$25.08
$1.06MSell
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 LP14.75%16,607,074$407.21MInstitution
James N. Topper12.99%14,630,524$358.74MInsider
Bain Capital Life Sciences Investors LLC9.52%10,719,110$262.83MInstitution
Nap Bv Forgrowth9.46%10,656,172$261.29MInsider
Fcpm III Services Bv9.44%10,632,113$260.70MInstitution
Bain Capital Life Sciences Investors LLC9.30%10,473,913$256.82MInsider
Ra Capital Management LP9.00%10,138,938$248.61MInstitution
Capital World Investors7.45%8,387,725$205.67MInstitution
Viking Global Investors LP6.20%6,978,534$171.11MInstitution
Deerfield Management Company LP4.54%5,115,953$125.44MInstitution

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NAMS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
NAMS74.13%25.87%Net SellingNet Selling
RARE85.45%14.55%Net SellingNet Selling
SLNO32.54%67.46%Net SellingNet Selling
XENE97.09%2.91%Net Buying
CGON84.47%15.53%Net BuyingNet Buying
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 103.32% institutional shareholders, 36.05% 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 12.99% of the company. James N. Topper's Newamsterdam Pharma Co Nv shares are currently valued at $358.30M.

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