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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
Robert BarrowCEO2026-09-0319,023$37.94
$721.73kSell
Brandi RobertsChief Financial Officer2026-06-253,013$45.03
$135.68kSell
Daniel KarlinChief Medical Officer2026-06-2510,035$45.03
$451.88kSell
Matthew T. WileyChief Commercial Officer2026-06-252,867$45.03
$129.10kSell
Robert BarrowChief Executive Officer2026-06-2529,208$45.03
$1.32MSell
Mark SullivanChief Legal Officer2026-06-2513,008$45.03
$585.75kSell
Daniel KarlinChief Medical Officer2026-03-258,018$18.47
$148.09kSell
Robert BarrowChief Executive Officer2026-03-2524,431$18.47
$451.24kSell
Mark SullivanChief Legal Officer2026-03-2510,702$18.47
$197.67kSell
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$1.54BInsider
Robert Barrow1.67%2,244,640$84.96MInsider
Cynthia W. Hu0.89%1,200,000$45.42MInsider
Daniel Karlin0.60%803,699$30.42MInsider
Mark Sullivan0.38%508,279$19.24MInsider
Brandi Roberts0.30%397,905$15.06MInsider
Matthew T. Wiley0.27%362,133$13.71MInsider
Dan Karlin0.25%338,013$12.79MInsider
Schond L. Greenway0.16%211,057$7.99MInsider
Wernli Miri Halperin0.15%202,405$7.66MInsider

1 of 3

DFTX vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
DFTX0.09%35.42%Net SellingNet Selling
EWTX0.11%14.46%Net SellingNet Selling
PBLS0.08%6.36%Net BuyingNet Buying
ERAS0.08%24.59%Net Buying
CRSP0.08%35.62%Net 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, 35.42% Definium Therapeutics insiders, and 64.49% 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 $1.58B.

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