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sellWeak cluster of 310b5-1 plan

Julie Rubinstein sold $1.0M of ADPT

President and COO at Adaptive Biotechnologies Corp. 35,643 shares at an average of $28.46, traded Oct 1, 2026, filed Oct 5, 2026.

Warning score
25
Value
$1.0M
35,643 shares
Holdings after
377,802
-9% from before
From 52-week low
+121%
low $12.41, close $27.37
From 52-week high
-7%
high $29.57, as of Oct 1, 2026

Score components

  • Role
    President
    +20
  • Trade size
    $1.0M at market
    +25
  • Share of holdings sold
    Sold 9.1% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -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.

ADPTOct 9, 2026 · close 26.49
Since filing Oct 5, 2026: -11.2%SPY +0.5% · excess -11.7%

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 0001780664-26-000035, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Oct 1, 2026MOption exercise
Common Stock10b5-1
+11,881$12.14$144k389,6837 d ago
Oct 1, 2026SOpen-market sale
Common Stock10b5-1
-6,081$27.57$168k383,6027 d ago
Oct 1, 2026SOpen-market sale
Common Stock10b5-1
-5,800$28.56$166k377,8027 d ago
Oct 2, 2026MOption exercise
Common Stock10b5-1
+11,881$12.14$144k389,6837 d ago
Oct 2, 2026SOpen-market sale
Common Stock10b5-1
-11,881$28.13$334k377,8027 d ago
Oct 5, 2026MOption exercise
Common Stock10b5-1
+11,881$12.14$144k389,6837 d ago
Oct 5, 2026SOpen-market sale
Common Stock10b5-1
-6,699$28.82$193k382,9847 d ago
Oct 5, 2026SOpen-market sale
Common Stock10b5-1
-5,182$29.67$154k377,8027 d ago
Oct 1, 2026MOption exercise
Stock Option (right to buy)derivative10b5-1
-11,881$0.00$0367,8967 d ago
Oct 2, 2026MOption exercise
Stock Option (right to buy)derivative10b5-1
-11,881$0.00$0356,0157 d ago
Oct 5, 2026MOption exercise
Stock Option (right to buy)derivative10b5-1
-11,881$0.00$0344,1347 d ago

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%
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%
0Weak
ADPTsell 210b5-1
Adaptive Biotechnologies Corp
Francis Lo
Chief People Officer
$77k
4,394 shares
-1%
30Weak
ADPTsell 410b5-1
Adaptive Biotechnologies Corp
Francis Lo
Chief People Officer
$1.8M
113,890 shares
-26%
55Moderate
ADPTsell 6
Adaptive Biotechnologies Corp
Robert Hershberg
director
$367k
22,968 shares
-33%
7Weak
ADPTsell 610b5-1
Adaptive Biotechnologies Corp
Sharon Benzeno
Chief Commercial Ofc Imm Med
$212k
12,604 shares
-4%
30Weak
ADPTsell 610b5-1
Adaptive Biotechnologies Corp
Harlan S Robins
Chief Scientific Officer
$673k
37,212 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.