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sellWeak cluster of 6

Winston J Churchill sold $221k of AMKR

director at AMKOR TECHNOLOGY, INC.. 5,000 shares at an average of $44.29, traded Dec 15, 2025, filed Dec 17, 2025.

Warning score
32
Value
$221k
5,000 shares
Holdings after
25,888
-16% from before
From 52-week low
+198%
low $14.66, close $43.70
From 52-week high
-7%
high $46.81, as of Dec 15, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $221k at market
    +12
  • Share of holdings sold
    Sold 16% of holdings
    +5
  • Cluster
    6 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.

AMKROct 9, 2026 · close 49.12
Since filing Dec 17, 2025: +27.0%SPY +17.2% · excess +9.8%

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 0001628280-25-057639, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 15, 2025MOption exercise
Common Stock
+5,000$19.39$97k30,888Dec 17, 2025
Dec 15, 2025SOpen-market sale
Common Stock
-5,000$44.29$221k25,888Dec 17, 2025
Dec 15, 2025MOption exercise
Director Stock Option (Right-to-Buy)derivative
-5,000$0.00$015,000Dec 17, 2025

Related signals

Other insiders at AMKOR TECHNOLOGY, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
0Weak
AMKRsell10b5-1
AMKOR TECHNOLOGY, INC.
Douglas A Alexander
director
$275k
5,000 shares
-15%
9Weak
AMKRsell10b5-1
AMKOR TECHNOLOGY, INC.
Megan Faust
CFO
$49k
1,000 shares
-1%
0Weak
AMKRsell10b5-1
AMKOR TECHNOLOGY, INC.
Mark N Rogers
EVP & General Counsel
$223k
5,000 shares
-11%
57Moderate
AMKRsell 6
AMKOR TECHNOLOGY, INC.
Farshad Haghighi
Executive Vice President
$789k
15,624 shares
-65%
40Moderate
AMKRsell 6
AMKOR TECHNOLOGY, INC.
Guillaume Marie Jean Rutten
President and CEO
$976k
20,000 shares
-4%
65Notable
AMKRsell 6
AMKOR TECHNOLOGY, INC.
Kevin K. Engel
President and CEO
$609k
12,500 shares
-81%
13Weak
AMKRsell 610b5-1
AMKOR TECHNOLOGY, INC.
Mark N Rogers
EVP & General Counsel
$235k
5,000 shares
-17%
58Moderate
AMKRsell 6
AMKOR TECHNOLOGY, INC.
Kevin K. Engel
President and CEO
$245k
5,316 shares
-87%
12Weak
AMKRsell 610b5-1
AMKOR TECHNOLOGY, INC.
Guillaume Marie Jean Rutten
President and CEO
$459k
10,000 shares
-3%
58Moderate
AMKRsell 6
AMKOR TECHNOLOGY, INC.
915 Investments, LP
other
$485M
10,000,000 shares
-25%

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.

Winston J Churchill sold $221k of AMKR | InsiderTell