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sellWeak cluster of 310b5-1 plan

Dan Paterson sold $63k of VSTM

President and CEO at Verastem, Inc.. 6,000 shares at an average of $10.50, traded Nov 26, 2025, filed Dec 1, 2025.

Warning score
28
Value
$63k
6,000 shares
Holdings after
426,818
-1% from before
From 52-week low
+190%
low $3.67, close $10.63
From 52-week high
-1%
high $10.77, as of Nov 26, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $63k at market
    +8
  • Share of holdings sold
    Sold 1.4% of holdings
    0
  • Cluster
    3 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.

This signal so far: 1m -25.3%, 3m -43.7%, 6m -59.5%.

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.

VSTMOct 12, 2026 · close 8.25
Since filing Dec 1, 2025: -20.2%SPY +15.6% · excess -35.8%

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 0001104659-25-117345, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 26, 2025SOpen-market sale
Common Stock10b5-1
-2,000$10.32$21k430,818Dec 1, 2025
Nov 28, 2025SOpen-market sale
Common Stock10b5-1
-2,000$10.79$22k428,818Dec 1, 2025
Dec 1, 2025SOpen-market sale
Common Stock10b5-1
-2,000$10.39$21k426,818Dec 1, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
10Weak
VSTMsell 210b5-1
Verastem, Inc.
Daniel Calkins
Chief Financial Officer
$21k
2,566 shares
-2%
28Weak
VSTMsell 210b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$353k
44,121 shares
-6%
10Weak
VSTMsell 210b5-1
Verastem, Inc.
Daniel Calkins
Chief Financial Officer
$424
55 shares
-0%
5Weak
VSTMsell10b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$7,565
1,302 shares
-0%
10Weak
VSTMsell 210b5-1
Verastem, Inc.
Daniel Calkins
Chief Financial Officer
$17k
4,089 shares
-3%
22Weak
VSTMsell 210b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$87k
20,871 shares
-3%
5Weak
VSTMsell10b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$4,691
806 shares
-0%
5Weak
VSTMsell10b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$6,489
970 shares
-0%
16Weak
VSTMsell 210b5-1
Verastem, Inc.
Daniel Calkins
Chief Financial Officer
$36k
5,039 shares
-5%
21Weak
VSTMsell 210b5-1
Verastem, Inc.
Dan Paterson
President and CEO
$74k
10,321 shares
-3%

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.

Dan Paterson sold $63k of VSTM | InsiderTell