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
Louise Frederika KooijChief Accounting Officer2026-05-265,000$10.90
$54.50kBuy
Louise Frederika KooijChief Accounting Officer2026-05-2660,000$10.00
$600.00kBuy
Louise Frederika KooijChief Accounting Officer2026-05-2665,000$35.69
$2.32MSell
Louis G. LangeDirector2026-03-1144,173$30.41
$1.34MSell
Louis G. LangeDirector2026-03-11446$31.23
$13.93kSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2026-03-09101,409$30.29
$3.07MSell
Louis G. LangeDirector2026-03-0944,619$11.50
$513.12kBuy
Johannes Jacob Pieter KasteleinChief Scientific Officer2026-03-0694,124$30.32
$2.85MSell
Louis G. LangeDirector2026-03-0628,186$29.41
$828.95kSell
Johannes Jacob Pieter KasteleinChief Scientific Officer2026-03-05104,467$30.30
$3.17MSell

1 of 7

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 LP14.49%16,943,774$522.21MInstitution
James N. Topper12.51%14,630,524$450.91MInsider
Capital World Investors9.50%11,109,034$342.38MInstitution
Nap Bv Forgrowth9.12%10,656,172$328.42MInsider
Bain Capital Life Sciences Investors LLC8.96%10,473,913$322.81MInsider
Ra Capital Management LP8.17%9,550,191$294.34MInstitution
Fcpm III Services Bv7.87%9,198,900$283.51MInstitution
Fmr LLC7.50%8,765,811$270.16MInstitution
Bain Capital Life Sciences Investors LLC6.25%7,306,566$225.19MInstitution
Wellington Management Group LLP4.38%5,115,818$157.67MInstitution

1 of 3

NAMS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
NAMS75.24%24.76%Net SellingNet Buying
CRNX90.33%9.67%Net SellingNet Selling
RCUS67.89%32.11%Net SellingNet Buying
CPRX84.26%15.74%Net Buying
ACAD71.81%28.19%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 105.74% institutional shareholders, 34.79% 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 12.51% of the company. James N. Topper's Newamsterdam Pharma Co Nv shares are currently valued at $459.40M.

If you're new to stock investing, here's how to buy Newamsterdam Pharma Co Nv stock.
©2026 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.