Definium Therapeutics, Inc. (DFTX) Insider Trading
Over the last 3 months, DFTX insiders made 0 open-market buys and 3 sales, a net sale of -$797K (SEC Form 4). Over the last 6 months, 2 institutions increased and 4 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$797.0K
Context3-month price +40.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Mar 26, 2026 | Karlin Danielofficer: Chief Medical Officer | Sell | 8,018 | $18.47 |
| Mar 26, 2026 | Sullivan Markofficer: Chief Legal Officer | Sell | 10,702 | $18.47 |
| Mar 26, 2026 | Barrow Robertdirector, officer: Chief Executive Officer | Sell | 24,431 | $18.47 |
Source: DFTX SEC Form 4 filings, latest Mar 26, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their DFTX positions over the last 6 months (SEC Form 13F).
Increased
2
New positions
243
Reduced
4
Sold out
1
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | New Position | 8.5M | May 13, 2026 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | Reduced | 5.9M | May 15, 2026 |
| AVORO CAPITAL ADVISORS LLC | New Position | 5.0M | May 15, 2026 |
| JANUS HENDERSON GROUP PLC | New Position | 3.6M | May 18, 2026 |
| DEEP TRACK CAPITAL, LP | New Position | 3.0M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | New Position | 2.5M | May 15, 2026 |
| STATE STREET CORP | New Position | 2.5M | May 15, 2026 |
| OCTAGON CAPITAL ADVISORS LP | New Position | 2.4M | May 15, 2026 |
| COMMODORE CAPITAL LP | New Position | 2.0M | May 15, 2026 |
| FMR LLC | New Position | 1.8M | May 15, 2026 |
| Trails Edge Capital Partners, LP | New Position | 1.7M | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | New Position | 1.7M | May 15, 2026 |
| ARROWMARK COLORADO HOLDINGS LLC | New Position | 1.6M | May 15, 2026 |
| CITADEL ADVISORS LLC | New Position | 1.3M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | New Position | 1.3M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.