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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
Matthew T. WileyChief Commercial Officer2026-06-252,867$45.03
$129.10kSell
Robert BarrowChief Executive Officer2026-06-2529,208$45.03
$1.32MSell
Daniel KarlinChief Medical Officer2026-06-2510,035$45.03
$451.88kSell
Brandi RobertsChief Financial Officer2026-06-253,013$45.03
$135.68kSell
Mark SullivanChief Legal Officer2026-06-2513,008$45.03
$585.75kSell
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
Mark SullivanChief Legal Officer2025-12-2611,276$13.15
$148.25kSell
Daniel KarlinChief Medical Officer2025-12-265,600$13.15
$73.62kSell

1 of 2

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

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DFTX Shareholders

What type of owners hold Definium Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Stephen L. Hurst37.34%40,722,778$1.81BInsider
Blackrock Inc7.78%8,480,230$377.29MInstitution
Driehaus Capital Management LLC5.42%5,911,889$263.02MInstitution
Avoro Capital Advisors LLC4.58%5,000,000$222.45MInstitution
Janus Henderson Group PLC3.26%3,556,041$158.21MInstitution
Deep Track Capital LP2.75%3,000,000$133.47MInstitution
Geode Capital Management LLC2.29%2,495,399$111.02MInstitution
State Street Corp2.27%2,471,873$109.97MInstitution
Octagon Capital Advisors LP2.24%2,440,000$108.56MInstitution
Commodore Capital LP1.83%2,000,000$88.98MInstitution

1 of 3

DFTX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DFTX63.13%36.87%Net SellingNet Selling
DYN83.36%16.64%Net SellingNet Selling
CRSP69.13%30.87%Net SellingNet Selling
ACAD71.81%28.19%Net SellingNet Selling
CAI41.84%58.16%Net SellingNet 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, 41.79% 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 $1.77B.

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