Amkor Technology, Inc. (AMKR) Insider Ownership

Historic Insider Ownership Trends

As of April 25, 2026, the three largest insider holders of AMKR are Agnes C Kim (Other, 72.07Mn shares), Agnes C Kim (Other, 72.07Mn shares), Agnes C Kim (Other, 72.07Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Agnes C Kim - 0 72,066,487 15 Feb, 2022
Agnes C Kim - 0 72,066,487 15 Feb, 2022
Agnes C Kim - 0 72,066,487 15 Feb, 2022
Agnes C Kim - 0 66,248,609 03 May, 2023
Agnes C Kim - 0 66,248,609 03 May, 2023
Agnes C Kim - 0 66,248,609 03 May, 2023
James J Kim - 0 39,594,980 06 Sep, 2023
James J Kim - 0 39,594,980 06 Sep, 2023
James J Kim - 0 39,594,980 06 Sep, 2023
John T Kim - 0 29,594,980 17 Feb, 2026
Investments, Lp 915 - 29,594,980 0 17 Feb, 2026
John T Kim - 0 29,594,980 17 Feb, 2026
John T Kim - 0 29,594,980 17 Feb, 2026
Susan Y Kim - 0 21,963,134 31 Dec, 2021
John T Kim - 0 21,963,134 31 Dec, 2021
John T Kim - 0 21,963,134 31 Dec, 2021
John T Kim - 0 21,963,134 31 Dec, 2021
Susan Y Kim - 0 21,963,134 31 Dec, 2021
Susan Y Kim - 0 21,963,134 31 Dec, 2021
John T Kim - 0 16,710,668 16 Nov, 2023
John T Kim - 0 16,710,668 16 Nov, 2023
John T Kim - 0 16,710,668 16 Nov, 2023
Agnes C Kim - 0 10,737,355 30 Dec, 2025
Agnes C Kim - 0 10,737,355 30 Dec, 2025
Agnes C Kim - 0 10,737,355 30 Dec, 2025
John T Kim - 0 9,846,944 30 Dec, 2025
John T Kim - 0 9,846,944 30 Dec, 2025
John T Kim - 0 9,846,944 30 Dec, 2025
John T Kim - 5,594,489 1,253,250 06 Nov, 2025
John T Kim - 5,594,489 1,253,250 06 Nov, 2025
John T Kim - 5,594,489 1,253,250 06 Nov, 2025
Susan Y Kim - 6,110,494 0 09 Apr, 2026
Susan Y Kim - 6,110,494 0 09 Apr, 2026
Susan Y Kim - 6,090,494 0 08 Dec, 2025
Susan Y Kim - 0 5,782,594 23 Dec, 2025
Susan Y Kim - 0 5,782,594 23 Dec, 2025
Susan Y Kim - 0 5,782,594 23 Dec, 2025
Susan Y Kim - 0 3,800,000 12 Aug, 2024
Susan Y Kim - 0 3,800,000 12 Aug, 2024
Susan Y Kim - 0 3,800,000 12 Aug, 2024
Susan Y Kim - 0 3,789,479 05 Aug, 2025
Susan Y Kim - 0 3,789,479 05 Aug, 2025
John T Kim - 0 3,789,479 05 Aug, 2025
Management, Llc Sujoda - 0 3,789,479 05 Aug, 2025
Susan Y Kim - 0 3,789,479 05 Aug, 2025
Investments, Lp Sujoda - 3,789,479 0 05 Aug, 2025
David D Kim - 0 3,789,479 05 Aug, 2025
David D Kim - 0 3,789,479 05 Aug, 2025
Management, Llc Sujoda - 0 3,789,479 05 Aug, 2025
John T Kim - 0 3,789,479 05 Aug, 2025
Investments, Lp Sujoda - 3,789,479 0 05 Aug, 2025
David D Kim - 0 3,789,479 05 Aug, 2025
John T Kim - 0 3,789,479 05 Aug, 2025
Investments, Lp Sujoda - 3,789,479 0 05 Aug, 2025
Management, Llc Sujoda - 0 3,789,479 05 Aug, 2025
Susan Y Kim - 0 3,713,610 23 Nov, 2025
Susan Y Kim - 0 3,713,610 23 Nov, 2025
Susan Y Kim - 0 3,713,610 23 Nov, 2025
Susan Y Kim - 0 3,328,065 20 Apr, 2022
Susan Y Kim - 0 3,328,065 20 Apr, 2022
Susan Y Kim - 0 3,328,065 20 Apr, 2022
Susan Y Kim - 0 2,660,840 16 Feb, 2023
Susan Y Kim - 0 2,660,840 16 Feb, 2023
Susan Y Kim - 0 2,660,840 16 Feb, 2023
James J Kim - 0 2,298,355 01 Aug, 2022
James J Kim - 0 2,298,355 01 Aug, 2022
James J Kim - 0 2,298,355 01 Aug, 2022
Annuity Trust Under The Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 Qualified - 1,958,355 0 21 Jun, 2023
Annuity Trust Under The Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 Qualified - 1,958,355 0 21 Jun, 2023
Annuity Trust Under The Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 Qualified - 1,958,355 0 21 Jun, 2023
James J Kim - 0 1,496,443 27 Jan, 2022
James J Kim - 0 1,496,443 27 Jan, 2022
James J Kim - 0 1,496,443 27 Jan, 2022
Grantor Retained Annuity Trust Of James J. Kim Dtd. 8/5/2024 2024 - 1,235,000 0 24 Nov, 2025
T. Kim 2024 Grat #1 Dtd. 08/09/2024 John - 1,194,000 0 06 Nov, 2025
T. Kim 2024 Grat #1 Dtd. 08/09/2024 John - 1,194,000 0 06 Nov, 2025
T. Kim 2024 Grat #1 Dtd. 08/09/2024 John - 1,194,000 0 06 Nov, 2025
Susan Y Kim - 0 1,124,000 30 Dec, 2025
Grantor Retained Annuity Trust Of Susan Y. Kim Dtd. 8/5/2024 2024 - 1,124,000 0 24 Nov, 2025
Susan Y Kim - 0 1,124,000 30 Dec, 2025
Susan Y Kim - 0 1,124,000 30 Dec, 2025
Susan Y Kim - 0 1,117,623 19 Sep, 2022
Susan Y Kim - 0 1,117,623 19 Sep, 2022
Susan Y Kim - 0 1,117,623 19 Sep, 2022
James J Kim - 0 965,000 24 Nov, 2025
James J Kim - 0 965,000 24 Nov, 2025
James J Kim - 0 965,000 24 Nov, 2025
Grantor Retained Annuity Trust Of Agnes C. Kim Dtd. 8/5/2024 2024 - 895,000 0 24 Nov, 2025
Susan Y Kim - 0 753,232 29 Jun, 2022
Susan Y Kim - 0 753,232 29 Jun, 2022
Susan Y Kim - 0 753,232 29 Jun, 2022
James J Kim - 0 725,000 30 Dec, 2025
James J Kim - 0 725,000 30 Dec, 2025
James J Kim - 0 725,000 30 Dec, 2025
Agnes C Kim - 0 705,000 24 Nov, 2025
Agnes C Kim - 0 705,000 24 Nov, 2025
Agnes C Kim - 0 705,000 24 Nov, 2025
Guillaume Marie Jean Rutten President And Ceo 552,558 0 02 Apr, 2026
Guillaume Marie Jean Rutten President And Ceo 552,558 0 02 Apr, 2026
Guillaume Marie Jean Rutten President And Ceo 552,558 0 02 Apr, 2026
Y. Kim 2012 Generation-Skipping Trust U/A Dated December 11, 2012 Susan - 0 164,678 24 Jan, 2022
Y. Kim 2012 Generation-Skipping Trust U/A Dated December 11, 2012 Susan - 0 164,678 24 Jan, 2022
Llc Susins, - 164,678 0 20 Jan, 2022
Llc Susins, - 164,678 0 20 Jan, 2022
Llc Susins, - 164,678 0 20 Jan, 2022
Y. Kim 2012 Generation-Skipping Trust U/A Dated December 11, 2012 Susan - 0 164,678 24 Jan, 2022
Robert Randolph Morse - 134,977 0 09 Apr, 2026
Megan Faust Cfo 134,138 0 02 Apr, 2026
Megan Faust Cfo 134,138 0 02 Apr, 2026
Megan Faust Cfo 134,138 0 02 Apr, 2026
Gil C. Tily Cao General Counsel 123,806 0 16 Dec, 2025
Gil C. Tily Cao General Counsel 123,806 0 16 Dec, 2025
Gil C. Tily Cao General Counsel 123,806 0 16 Dec, 2025
David N Watson - 120,757 0 26 Feb, 2026
David N Watson - 120,757 0 26 Feb, 2026
David N Watson - 120,757 0 26 Feb, 2026
Roger Anthony Carolin - 94,409 0 16 May, 2025
James J Kim Chief Executive Officer 61,645 0 23 Dec, 2025
James J Kim Chief Executive Officer 61,645 0 23 Dec, 2025
James J Kim Chief Executive Officer 61,645 0 23 Dec, 2025
T. Kim 2024 Grat #2 Dtd. 08/09/2024 John - 59,250 0 06 Nov, 2025
T. Kim 2024 Grat #2 Dtd. 08/09/2024 John - 59,250 0 06 Nov, 2025
T. Kim 2024 Grat #2 Dtd. 08/09/2024 John - 59,250 0 06 Nov, 2025
Maryfrances Mccourt - 55,918 0 16 Dec, 2025
Maryfrances Mccourt - 55,918 0 16 Dec, 2025
Maryfrances Mccourt - 55,918 0 16 Dec, 2025
Daniel Jl Liao - 40,804 0 16 May, 2025
Mark N Rogers Evp General Counsel 38,904 0 20 Apr, 2026
Mark N Rogers Evp General Counsel 38,904 0 18 Mar, 2026
Mark N Rogers Evp General Counsel 38,904 0 18 Mar, 2026
John Charles Stone Executive Vice President 31,038 0 15 Feb, 2022
John Charles Stone Executive Vice President 31,038 0 15 Feb, 2022
John Charles Stone Executive Vice President 31,038 0 15 Feb, 2022
Douglas A Alexander - 29,109 0 16 May, 2025
Winston J Churchill - 25,888 0 17 Dec, 2025
Sung Shin Executive Vice President 15,418 0 05 Jun, 2023
Sung Shin Executive Vice President 15,418 0 05 Jun, 2023
Sung Shin Executive Vice President 15,418 0 05 Jun, 2023
Farshad Haghighi Executive Vice President 8,354 0 26 Feb, 2026
Farshad Haghighi Executive Vice President 8,354 0 26 Feb, 2026
Farshad Haghighi Executive Vice President 8,354 0 26 Feb, 2026
Kevin K. Engel President And Ceo 7,920 0 02 Apr, 2026
Kevin K. Engel President And Ceo 7,920 0 02 Apr, 2026
Kevin K. Engel President And Ceo 7,920 0 02 Apr, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
16 Apr, 2026 Mark N Rogers Common Stock A 5,000 $7.40 43,904 D M
16 Apr, 2026 Mark N Rogers Common Stock D 5,000 $59.43 38,904 D S
16 Apr, 2026 Mark N Rogers Employee Stock Option (Right-to-Buy) D 5,000 $0.00 90,000 D M
07 Apr, 2026 Robert Randolph Morse Common Stock A 20,000 $5.66 137,355 D M
07 Apr, 2026 Susan Y Kim Common Stock A 20,000 $5.66 6,110,494 D M
07 Apr, 2026 Susan Y Kim Common Stock A 20,000 $5.66 6,110,494 D M
07 Apr, 2026 Robert Randolph Morse Common Stock D 2,378 $0.00 134,977 D F
07 Apr, 2026 Robert Randolph Morse Director Stock Option (Right-to-Buy) D 20,000 $0.00 0 D M
07 Apr, 2026 Susan Y Kim Director stock option (right to buy) D 20,000 $0.00 0 D M
07 Apr, 2026 Susan Y Kim Director stock option (right to buy) D 20,000 $0.00 0 D M
31 Mar, 2026 David N Watson Restricted Stock Units A 18 $0.00 9,893 D A
31 Mar, 2026 Kevin K. Engel Common Stock A 8,692 $0.00 11,645 D M
31 Mar, 2026 Guillaume Marie Jean Rutten Common Stock A 8,692 $0.00 552,558 D M
31 Mar, 2026 Gil C. Tily Restricted Stock Units A 18 $0.00 9,893 D A
31 Mar, 2026 Megan Faust Common Stock A 8,692 $0.00 137,863 D M
31 Mar, 2026 David N Watson Restricted Stock Units A 18 $0.00 9,893 D A
31 Mar, 2026 Gil C. Tily Restricted Stock Units A 18 $0.00 9,893 D A
31 Mar, 2026 Kevin K. Engel Common Stock A 8,692 $0.00 11,645 D M
31 Mar, 2026 Megan Faust Common Stock A 8,692 $0.00 137,863 D M
31 Mar, 2026 Maryfrances Mccourt Restricted Stock Units A 16 $0.00 8,896 D A