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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. Hurst30.31%40,722,778$1.78BInsider
Robert Barrow1.10%1,473,246$64.56MInsider
Cynthia W. Hu0.89%1,200,000$52.58MInsider
Daniel Karlin0.45%603,282$26.44MInsider
Mark Sullivan0.29%383,071$16.79MInsider
Dan Karlin0.25%338,013$14.81MInsider
Brandi Roberts0.20%271,987$11.92MInsider
Matthew T. Wiley0.18%237,133$10.39MInsider
Schond L. Greenway0.16%211,057$9.25MInsider
Wernli Miri Halperin0.15%202,405$8.87MInsider

1 of 3

DFTX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DFTX0.09%34.42%Net SellingNet Selling
CRSP0.08%35.62%Net Selling
LGND0.02%99.98%Net SellingNet Selling
XENE0.10%2.58%Net SellingNet Selling
PTCT0.12%18.88%Net SellingNet Selling
View Top Biotech Stocks

Definium Therapeutics Stock Ownership FAQ

Who owns Definium Therapeutics?

Definium Therapeutics (NASDAQ: DFTX) is owned by 0.09% institutional shareholders, 34.42% Definium Therapeutics insiders, and 65.50% retail investors. Stephen L. Hurst is the largest individual Definium Therapeutics shareholder, owning 40.72M shares representing 30.31% of the company. Stephen L. Hurst's Definium Therapeutics shares are currently valued at $1.67B.

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