Companies / Definium Therapeutics, Inc.

Definium Therapeutics, Inc.

Nasdaq: DFTXCIK 1813814NEW YORK, NYdefiniumtx.com ↗
Insider flow · last 90 daysNet sells $585.8K

Financials

Revenue—
Net income$-183.79M
Total debt$36.47M
Cash$655.27M
Diluted EPS$-2.06
Shares outstanding134.4M

Ownership

134.4M shares outstanding · as of Jul 30, 2026
0.99%Insiders
Ownership
Insiders0.99%1,335,671
10%+ / strategic9.09%12,213,742
Institutions23.36%31,386,524
Public float66.56%89,431,013

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 7

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Insider% of sharesShares
Barrow RobertCEOChief Executive Officer · Director
0.56%752,454
Karlin DanielChief Medical Officer
0.31%413,317
Sullivan MarkFormerChief Legal Officer
0.24%320,571
Roberts BrandiChief Financial Officer
0.11%150,000
Wiley Matthew T.FormerChief Commercial Officer
0.09%115,000
Gryska David WDirector
0.01%19,900
Adsett RogerDirector
——

Institutional holders 63

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HolderValue% of shares
BlackRock, Inc.$528.39M8.36%
State Street Corporation$144.20M2.28%
Driehaus Capital Management LLC$87.53M4.87%
Janus Henderson Group PLC$67.23M2.65%
Geode Capital Management, LLC$47.17M1.86%
Balyasny Asset Management L.P.$24.08M0.95%
Two Sigma Investments, LP$22.71M0.89%
Marshall Wace, LLP$22.70M0.89%
Adage Capital Partners Gp, L.L.C.$21.73M0.86%
AWM Investment Company, Inc.$18.62M1.03%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Jun 25, 2026Sullivan Mark
Executive
SellCommon Shares$585.8K-13K
-3.90%
320,571
0.24% of shares
medium
Mar 25, 2026Barrow Robert
CEO
SellCommon Shares$451.2K-24K
-3.14%
752,454
0.56% of shares
medium
Mar 25, 2026Sullivan Mark
Executive
SellCommon Shares$197.7K-11K
-3.80%
271,079
0.20% of shares
medium
Mar 25, 2026Karlin Daniel
Executive
SellCommon Shares$148.1K-8K
-1.90%
413,317
0.31% of shares
medium
Jun 22, 2026Sullivan Mark
Executive
GrantCommon Shares$0+63K
+23.06%
333,579
0.25% of shares
low
Jun 11, 2026Gryska David W
Director
GrantCommon Shares$0+5K
+30.63%
19,900
0.01% of shares
low
Feb 3, 2026Wiley Matthew T.
Executive
GrantCommon Shares$0+115K
115,000
0.09% of shares
low
Feb 3, 2026Roberts Brandi
Executive
GrantCommon Shares$0+150K
150,000
0.11% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Avoro Capital Advisors LLCPassive13G———
Deep Track Capital, LPPassive13G/A—5,676,540—
Commodore Capital LPPassive13G/A———
Driehaus Capital Management LLCPassive13G—6,537,202—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
DFTXCommon StockEquity24477V105BBG00F13HYQ7