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sellModerate cluster of 5

Peter M Neupert sold $3.1M of ADPT

director at Adaptive Biotechnologies Corp. 124,690 shares at an average of $25.15, traded Aug 17, 2026, filed Aug 19, 2026.

Warning score
50
Value
$3.1M
124,690 shares
Holdings after
130,625
-49% from before
From 52-week low
+101%
low $12.30, close $24.77
From 52-week high
-3%
high $25.45, as of Aug 17, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $3.1M at market
    +25
  • Share of holdings sold
    Sold 49% of holdings
    +10
  • Cluster
    5 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15

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.

ADPTOct 9, 2026 · close 26.49
Since filing Aug 19, 2026: +3.9%SPY +1.5% · excess +2.4%

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 0001237566-26-000003, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 17, 2026MOption exercise
Common Stock
+15,000$6.32$95k255,315Aug 19, 2026
Aug 17, 2026SOpen-market sale
Common Stock
-15,000$25.23$378k240,315Aug 19, 2026
Aug 17, 2026SOpen-market sale
Common Stock
-40,000$25.10$1.0M200,315Aug 19, 2026
Aug 17, 2026SOpen-market sale
Common Stock
-69,690$25.16$1.8M130,625Aug 19, 2026
Aug 17, 2026MOption exercise
Stock Option (right to buy)derivative
-15,000$0.00$00Aug 19, 2026

Related signals

Other insiders at Adaptive Biotechnologies Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
24Weak
ADPTsell 310b5-1
Adaptive Biotechnologies Corp
Julie Rubinstein
President and COO
$948k
35,643 shares
-9%
22Weak
ADPTsell 310b5-1
Adaptive Biotechnologies Corp
Susan Bobulsky
Chief Commercial Officer, MRD
$193k
6,444 shares
-2%
22Weak
ADPTsell 310b5-1
Adaptive Biotechnologies Corp
Francis Lo
Chief People Officer
$758k
26,792 shares
-11%
25Weak
ADPTsell 310b5-1
Adaptive Biotechnologies Corp
Julie Rubinstein
President and COO
$1.0M
35,643 shares
-9%
23Weak
ADPTsell 210b5-1
Adaptive Biotechnologies Corp
Francis Lo
Chief People Officer
$3.2M
115,406 shares
-34%
8Weak
ADPTsell 210b5-1
Adaptive Biotechnologies Corp
Susan Bobulsky
Chief Commercial Officer, MRD
$32k
1,195 shares
-0%
48Moderate
ADPTsell 4
Adaptive Biotechnologies Corp
Katey Einterz Owen
director
$250k
9,615 shares
-11%
46Moderate
ADPTsell 5
Adaptive Biotechnologies Corp
Robert Hershberg
director
$748k
30,664 shares
-40%
55Moderate
ADPTsell 5
Adaptive Biotechnologies Corp
Chad M Robins
CEO and Chairman
$15M
600,000 shares
-24%
18Weak
ADPTsell 410b5-1
Adaptive Biotechnologies Corp
Susan Bobulsky
Chief Commercial Officer, MRD
$75k
3,000 shares
-1%

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.