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sellModerate cluster of 2

Michael S Perry sold $1.0M of ARWR

director at ARROWHEAD PHARMACEUTICALS, INC.. 11,600 shares at an average of $87.30, traded Aug 18, 2026, filed Aug 20, 2026.

Warning score
48
Value
$1.0M
11,600 shares
Holdings after
111,459
-9% from before
From 52-week low
+343%
low $19.86, close $87.90
From 52-week high
-2%
high $89.59, as of Aug 18, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $1.0M at market
    +25
  • Share of holdings sold
    Sold 9.4% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8

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.

ARWROct 13, 2026 · close 58.13
Since filing Aug 20, 2026: -33.5%SPY +2.3% · 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 0001250379-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 18, 2026SOpen-market sale
Common Stock
-11,600$87.30$1.0M111,459Aug 20, 2026

Related signals

Other insiders at ARROWHEAD PHARMACEUTICALS, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
34Weak
ARWRsell 2
ARROWHEAD PHARMACEUTICALS, INC.
Adeoye Y Olukotun
director
$174k
2,000 shares
-6%
8Weak
ARWRsell10b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Hongbo Lu
director
$228k
2,970 shares
-5%
34Weak
ARWRsell 210b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Daniel Joseph Apel
Chief Financial Officer
$934k
13,095 shares
-7%
25Weak
ARWRsell 210b5-1
ARROWHEAD PHARMACEUTICALS, INC.
James C Hamilton
Chief Medical Officer
$750k
10,000 shares
-4%
15Weak
ARWRsell10b5-1
ARROWHEAD PHARMACEUTICALS, INC.
James C Hamilton
Chief Medical Officer
$642k
10,000 shares
-4%
43Moderate
ARWRsell 710b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Christopher Richard Anzalone
Chief Executive Officer
$872k
13,187 shares
-0%
40Moderate
ARWRsell 410b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Patrick O'Brien
COO
$3.1M
49,493 shares
-9%
40Moderate
ARWRsell 410b5-1
ARROWHEAD PHARMACEUTICALS, INC.
James C Hamilton
Chief Medical Officer
$2.5M
40,164 shares
-19%
30Weak
ARWRsell 710b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Christopher Richard Anzalone
Chief Executive Officer
$3.6M
51,726 shares
-1%
28Weak
ARWRsell 710b5-1
ARROWHEAD PHARMACEUTICALS, INC.
Mauro Ferrari
director
$527k
7,530 shares
-10%

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.