MarketPeel
Insider Trading Intelligence
DK

Daniel Karlin

DFTX
CHIEF MEDICAL OFFICER · DEFINIUM THERAPEUTICS, INC. · CIK 0001897618
FILING MIX · LIFETIME50%/50%
BUYS
2
SELLS
2
TOTAL VALUE
$600.0K
COMPANIES
1
ACTIVE SINCE
Feb 2026
HOLDINGS NOW
503,282
AVG SELL PX
$33.23
TRADE KIND
SHOWING 4 / 4
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Daniel Karlin, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d1+0.00%+11.53%-0.24%+11.77%+11.77%
14d1+0.00%+13.81%+2.92%+10.88%+10.88%
30d1+0.00%+21.71%+8.70%+13.01%+13.01%
60d1+0.00%+21.82%
90d1+0.00%+32.54%+13.33%+19.21%+19.21%
180d1(1 pending)
1y1(1 pending)
2y1(1 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
DFTX · 503,282 shares · as of Jun 25, 2026
0143,756287,513431,269575,025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
2026
FLOW · 2 buys / 2 sellsCOVERAGE · 2 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
DFTX
DEFINIUM THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
10,035$45.03$451.9K503,282Jun 25, 2026Jun 26, 2026View →
DFTX
DEFINIUM THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
100,000513,317Jun 22, 2026Jun 22, 2026View →
DFTX
DEFINIUM THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
8,018$18.47$148.1K413,317Mar 25, 2026Mar 26, 2026View →
DFTX
DEFINIUM THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
150,000575,025Feb 3, 2026Feb 5, 2026View →
Other insiders · DFTX
Loading peer insiders…
About this filer
CIK 0001897618
ROLE
Chief Medical Officer
PRIMARY
DFTX
COMPANIES
1
ACTIVE SINCE
Feb 2026
MARKETPEEL · /INSIDER/0001897618DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback