WallStreetZenWallStreetZen

NASDAQ: DFTX
Definium Therapeutics Inc Stock Ownership - Who owns Definium Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Definium Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Robert BarrowChief Executive Officer2026-03-2524,431$18.47
$451.24kSell
Daniel KarlinChief Medical Officer2026-03-258,018$18.47
$148.09kSell
Mark SullivanChief Legal Officer2026-03-2510,702$18.47
$197.67kSell
Daniel KarlinChief Medical Officer2025-12-265,600$13.15
$73.62kSell
Robert BarrowChief Executive Officer2025-12-2625,791$13.15
$339.07kSell
Mark SullivanChief Legal Officer2025-12-2611,276$13.15
$148.25kSell
Mark SullivanChief Legal Officer2025-09-2511,278$9.77
$110.19kSell
Robert BarrowChief Executive Officer2025-09-2525,797$9.77
$252.04kSell
Daniel KarlinChief Medical Officer2025-09-257,704$9.77
$75.27kSell
Robert BarrowChief Executive Officer2025-06-2526,491$6.80
$180.14kSell

1 of 2

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

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

DFTX Shareholders

What type of owners hold Definium Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Stephen L. Hurst37.34%40,722,778$946.40MInsider
Blackrock Inc7.78%8,480,230$197.08MInstitution
Driehaus Capital Management LLC5.42%5,911,889$137.39MInstitution
Avoro Capital Advisors LLC4.58%5,000,000$116.20MInstitution
Janus Henderson Group PLC3.26%3,556,041$82.64MInstitution
Deep Track Capital LP2.75%3,000,000$69.72MInstitution
Geode Capital Management LLC2.29%2,495,399$57.99MInstitution
State Street Corp2.27%2,471,873$57.45MInstitution
Octagon Capital Advisors LP2.24%2,440,000$56.71MInstitution
Commodore Capital LP1.83%2,000,000$46.48MInstitution

1 of 3

DFTX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DFTX63.45%36.55%Net SellingNet Selling
IRON62.62%37.38%Net SellingNet Selling
ALMS77.18%22.82%Net BuyingNet Buying
TARS73.42%26.58%Net SellingNet Selling
IDYA92.57%7.43%Net Buying
View Top Biotech Stocks

Definium Therapeutics Stock Ownership FAQ

Who owns Definium Therapeutics?

Definium Therapeutics (NASDAQ: DFTX) is owned by 71.57% institutional shareholders, 41.22% Definium Therapeutics insiders, and 0.00% retail investors. Stephen L. Hurst is the largest individual Definium Therapeutics shareholder, owning 40.72M shares representing 37.34% of the company. Stephen L. Hurst's Definium Therapeutics shares are currently valued at $981.83M.

If you're new to stock investing, here's how to buy Definium Therapeutics 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.