Form4insider filings, from the source

Company · CIK 0001047127 · SIC 3674 — Semiconductors & Related Devices · Nasdaq

AMKOR TECHNOLOGY, INC. · AMKR

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $4.9M · 11net −$4.9M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 8, 2026 SForm 4 →Sep 10, 4:37 pm EDTMegan FaustCFO1,000$49.05$49,050134,105−0.74%10b5-1
Aug 17, 2026 SForm 4 →Aug 19, 4:37 pm EDTMark N RogersEVP & General Counsel5,000$59.78$298,90038,904−11.4%10b5-1
Aug 17, 2026 MForm 4 →Aug 19, 4:37 pm EDTMark N RogersEVP & General Counsel5,000$7.40$37,00043,904—10b5-1
Aug 11, 2026 SForm 4 →Aug 13, 4:37 pm EDTMegan FaustCFO1,000$54.45$54,450135,105−0.73%10b5-1
Aug 7, 2026 SForm 4 →Aug 11, 4:36 pm EDTDouglas A AlexanderDirector5,000$55.81$279,05029,109−14.7%10b5-1
Aug 7, 2026 MForm 4 →Aug 11, 4:36 pm EDTDouglas A AlexanderDirector5,000$8.51$42,55034,109—10b5-1
Aug 5, 2026 SForm 4 →Aug 7, 4:36 pm EDTGuillaume Marie Jean RuttenDirector50,000$54.93$2,746,250461,732−9.77%
Jul 30, 2026 GForm 4 →Jul 31, 4:38 pm EDTWinston J ChurchillDirector100——28,681—
Jul 30, 2026 SForm 4 →Jul 31, 4:36 pm EDTKevin K. EngelPresident and CEO, Director3,221$47.00$151,3879,666−25.0%
Jul 20, 2026 MForm 4 →Jul 22, 4:33 pm EDTAgnes C KimOther450,000$9.65$4,342,00011,187,355—
Jul 20, 2026 MForm 4 →Jul 22, 4:32 pm EDTJames J Kim10% Owner450,000$9.65$4,342,000511,645—
Jul 16, 2026 SForm 4 →Jul 20, 4:38 pm EDTMark N RogersEVP & General Counsel5,000$65.12$325,60038,904−11.4%10b5-1
Jul 16, 2026 MForm 4 →Jul 20, 4:38 pm EDTMark N RogersEVP & General Counsel5,000$7.40$37,00043,904—10b5-1
Jul 14, 2026 SForm 4 →Jul 16, 4:36 pm EDTMegan FaustCFO1,000$69.91$69,910136,105−0.73%10b5-1
Jun 30, 2026 FMForm 4 →Jul 2, 4:37 pm EDTKevin K. EngelPresident and CEO, Director12,417$86.23$321,20712,887—
Jun 30, 2026 FMForm 4 →Jul 2, 4:36 pm EDTMegan FaustCFO12,417$86.23$321,207137,105—
Jun 30, 2026 MForm 4 →Jul 2, 4:35 pm EDTGuillaume Marie Jean RuttenDirector8,692——511,732—
Jun 16, 2026 SForm 4 →Jun 18, 4:36 pm EDTMark N RogersEVP & General Counsel5,000$86.21$431,05038,904−11.4%10b5-1
Jun 16, 2026 MForm 4 →Jun 18, 4:36 pm EDTMark N RogersEVP & General Counsel5,000$7.40$37,00043,904—10b5-1
Jun 12, 2026 SForm 4 →Jun 16, 4:35 pm EDTWinston J ChurchillDirector5,000$78.20$391,00028,781−14.8%
Jun 12, 2026 MForm 4 →Jun 16, 4:35 pm EDTWinston J ChurchillDirector5,000$19.39$96,95033,781—
Jun 12, 2026 AForm 4 →Jun 12, 4:36 pm EDTSusan Y KimDirector, 10% Owner9,893——6,120,387—
Jun 9, 2026 SForm 4 →Jun 11, 4:38 pm EDTMegan FaustCFO1,000$70.30$70,300132,138−0.75%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 22, 2026 AForm 4 →Sep 24, 4:45 pm EDTSusan Y KimDirector, 10% Owner4——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:43 pm EDTDavid N WatsonDirector4——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:43 pm EDTGil C. TilyDirector4——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:42 pm EDTGuillaume Marie Jean RuttenDirector4——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:41 pm EDTRobert Randolph MorseDirector32——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:40 pm EDTMaryFrances McCourtDirector17——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:39 pm EDTDaniel JL LiaoDirector19——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:38 pm EDTWinston J ChurchillDirector4——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:37 pm EDTRoger Anthony CarolinDirector32——2,620—
Sep 22, 2026 AForm 4 →Sep 24, 4:37 pm EDTDouglas A AlexanderDirector45——2,620—
Aug 17, 2026 MForm 4 →Aug 19, 4:37 pm EDTMark N RogersEVP & General Counsel5,000——70,000—10b5-1
Aug 7, 2026 MForm 4 →Aug 11, 4:36 pm EDTDouglas A AlexanderDirector5,000——14,657—10b5-1
Jul 20, 2026 MForm 4 →Jul 22, 4:32 pm EDTJames J Kim10% Owner450,000——0—
Jul 16, 2026 MForm 4 →Jul 20, 4:38 pm EDTMark N RogersEVP & General Counsel5,000——75,000—10b5-1
Jun 30, 2026 MForm 4 →Jul 2, 4:37 pm EDTKevin K. EngelPresident and CEO, Director8,692——0—
Jun 30, 2026 MForm 4 →Jul 2, 4:36 pm EDTMegan FaustCFO8,692——0—
Jun 30, 2026 MForm 4 →Jul 2, 4:35 pm EDTGuillaume Marie Jean RuttenDirector8,692——0—
Jun 23, 2026 AForm 4 →Jun 25, 4:50 pm EDTSusan Y KimDirector, 10% Owner3——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:48 pm EDTDavid N WatsonDirector3——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:47 pm EDTGil C. TilyDirector3——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:46 pm EDTGuillaume Marie Jean RuttenDirector3——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:44 pm EDTRobert Randolph MorseDirector20——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:42 pm EDTMaryFrances McCourtDirector11——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:40 pm EDTDaniel JL LiaoDirector12——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:39 pm EDTWinston J ChurchillDirector3——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:37 pm EDTRoger Anthony CarolinDirector20——2,616—
Jun 23, 2026 AForm 4 →Jun 25, 4:36 pm EDTDouglas A AlexanderDirector28——2,616—
Jun 16, 2026 MForm 4 →Jun 18, 4:36 pm EDTMark N RogersEVP & General Counsel5,000——80,000—10b5-1
Jun 12, 2026 MForm 4 →Jun 16, 4:35 pm EDTWinston J ChurchillDirector5,000——10,000—