WallStreetZenWallStreetZen

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

1 of 6

NAMS insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when NAMS insiders and whales buy or sell their stock.

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$593.20MInstitution
James N. Topper12.99%14,630,524$522.60MInsider
Bain Capital Life Sciences Investors LLC9.52%10,719,110$382.89MInstitution
Nap Bv Forgrowth9.46%10,656,172$380.64MInsider
Fcpm III Services Bv9.44%10,632,113$379.78MInstitution
Bain Capital Life Sciences Investors LLC9.30%10,473,913$374.13MInsider
Ra Capital Management LP9.00%10,138,938$362.16MInstitution
Capital World Investors7.45%8,387,725$299.61MInstitution
Viking Global Investors LP6.20%6,978,534$249.27MInstitution
Deerfield Management Company LP4.54%5,115,953$182.74MInstitution

1 of 3

NAMS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
NAMS74.13%25.87%Net SellingNet Selling
VKTX67.38%8.93%Net Selling
CRNX89.09%10.91%Net BuyingNet Selling
PRAX63.26%36.74%Net SellingNet Selling
ACAD72.43%27.57%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 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 $527.28M.

If you're new to stock investing, here's how to buy Newamsterdam Pharma Co Nv stock.
©2025 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.