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sellWeak cluster of 510b5-1 plan

Brandi Roberts sold $123k of DFTX

Chief Financial Officer at Definium Therapeutics, Inc.. 3,377 shares at an average of $36.57, traded Sep 25, 2026, filed Sep 29, 2026.

Warning score
27
Value
$123k
3,377 shares
Holdings after
394,528
-1% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CFO
    +22
  • Trade size
    $123k at market
    +10
  • Share of holdings sold
    Sold 0.8% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

DFTXOct 9, 2026 · close 36.90
Since filing Sep 29, 2026: -3.4%SPY +1.9% · excess -5.3%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001104659-26-112058, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 25, 2026SOpen-market sale
Common Shares10b5-1
-3,377$36.57$123k394,52814 d ago

Related signals

Other insiders at Definium Therapeutics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
45Moderate
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Robert Barrow
Chief Executive Officer
$1.2M
31,550 shares
-1%
28Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Mark Sullivan
Chief Legal Officer
$514k
14,051 shares
-3%
20Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Matthew T. Wiley
Chief Commercial Officer
$113k
3,097 shares
-1%
26Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Daniel Karlin
Chief Medical Officer
$397k
10,853 shares
-1%
26Weak
DFTXsell10b5-1
Definium Therapeutics, Inc.
Robert Barrow
Chief Executive Officer
$722k
19,023 shares
-1%
45Moderate
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Robert Barrow
Chief Executive Officer
$1.3M
29,208 shares
-3%
21Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Matthew T. Wiley
Chief Commercial Officer
$129k
2,867 shares
-2%
28Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Brandi Roberts
Chief Financial Officer
$136k
3,013 shares
-1%
27Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Daniel Karlin
Chief Medical Officer
$452k
10,035 shares
-2%
29Weak
DFTXsell 510b5-1
Definium Therapeutics, Inc.
Mark Sullivan
Chief Legal Officer
$586k
13,008 shares
-4%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.