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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
Daniel KarlinMed2026-09-2510,853$36.57
$396.89kSell
Matthew T. WileyCCO2026-09-253,097$36.57
$113.26kSell
Mark SullivanCLO2026-09-2514,051$36.57
$513.85kSell
Brandi RobertsCFO2026-09-253,377$36.57
$123.50kSell
Robert BarrowCEO2026-09-2531,550$36.57
$1.15MSell
Andreas KrebsDirector2026-09-181,629$35.52
$57.86kBuy
Carol A. ValloneDirector2026-09-181,086$35.52
$38.57kBuy
Robert BarrowCEO2026-09-0319,023$37.94
$721.73kSell
Daniel KarlinChief Medical Officer2026-06-2510,035$45.03
$451.88kSell
Mark SullivanChief Legal Officer2026-06-2513,008$45.03
$585.75kSell

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$1.32BInsider
Robert Barrow1.65%2,213,090$71.86MInsider
Cynthia W. Hu0.89%1,200,000$38.96MInsider
Daniel Karlin0.59%792,846$25.74MInsider
Mark Sullivan0.37%494,228$16.05MInsider
Brandi Roberts0.29%394,528$12.81MInsider
Matthew T. Wiley0.27%359,036$11.66MInsider
Dan Karlin0.25%338,013$10.98MInsider
Schond L. Greenway0.16%211,057$6.85MInsider
Wernli Miri Halperin0.15%202,405$6.57MInsider

1 of 3

DFTX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DFTX0.09%35.38%Net SellingNet Selling
EWTX0.11%14.46%Net SellingNet Selling
DNTH0.12%60.34%Net BuyingNet Buying
LEGN0.03%0.47%Net SellingNet Selling
TVTX0.11%61.52%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, 35.38% Definium Therapeutics insiders, and 64.54% 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 $1.32B.

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