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Insider

Guillaume Marie Jean Rutten

President and CEO

Guillaume Marie Jean Rutten (President and CEO) filed 9 Form 4 reports in the trailing twelve months (0 purchases, 9 sales), most often in Amkor Technology, Inc. (AMKR). The largest single filing was $3.7M of AMKR (50,000 sh × $74.28, as filed), executed May 8.

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Return, ttmiAverage return per filing, trailing twelve months
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
returns measure stock purchases only
Filings, ttm
9
0 buys · 9 sells
Median delay
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$9.5M
shares × price, as filed
Last traded
Aug 6
Filed Aug 7

Median ADV $299.5M across their filed names

Open performance
Volume by month
$3.7M$1.9M$0Oct 2024Apr 2025Oct 2025Apr 2026Oct 2024 · sells $315KSep 2025 · sells $300KOct 2025 · sells $307KNov 2025 · sells $317KDec 2025 · sells $448KJan 2026 · sells $531KFeb 2026 · sells $1.4MMay 2026 · sells $3.7MAug 2026 · sells $2.7M
Buys $0 Sells $10.1M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on
Technology 9 filings

Sector per market data · by filing · past 12 months

Most traded names
AMKR Amkor Technology, Inc. AMKR · 0 buys · 10 sells 10 filings
Recent filings
AMKRSALE Amkor Technology, Inc. View filing → $300K
10,000 sh × $30.00
Exec Sep 23 2025
Filed Sep 23 2025 · 5:30 PM ET
AMKRSALE Amkor Technology, Inc. View filing → $315K
10,000 sh × $31.51
Exec Oct 15 2024
Filed Oct 17 2024 · 5:30 PM ET
AMKRSALE Amkor Technology, Inc. View filing → $544K
18,125 sh × $30.00
Exec Sep 16 2024
Filed Sep 18 2024 · 5:30 PM ET