Amkor Technology's three largest insider shareholders as of June 06, 2026 are Agnes C Kim (Other, 72.07Mn shares), Agnes C Kim (Other, 66.25Mn shares), James J Kim (Director, 39.59Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Winston J Churchill | - | 25,888 | 0 | 17 Dec, 2025 |
| James J Kim | - | 0 | 39,594,980 | 18 Sep, 2023 |
| Agnes C Kim | - | 0 | 72,066,487 | 15 Feb, 2022 |
| Susan Y Kim | - | 0 | 21,963,134 | 31 Dec, 2021 |
| David D Kim | - | 0 | 3,789,479 | 05 Aug, 2025 |
| John T Kim | - | 0 | 29,594,980 | 17 Feb, 2026 |
| Douglas A Alexander | - | 29,109 | 0 | 16 May, 2025 |
| Mark N Rogers | Evp General Counsel | 38,904 | 0 | 20 Apr, 2026 |
| David N Watson | - | 120,757 | 0 | 26 Feb, 2026 |
| John D Liu | - | 2,983 | 0 | 16 May, 2025 |
| Roger Anthony Carolin | - | 94,409 | 0 | 16 May, 2025 |
| Gil C. Tily | Cao General Counsel | 123,806 | 0 | 16 Dec, 2025 |
| Investments, Lp 915 | - | 29,594,980 | 0 | 17 Feb, 2026 |
| Investments, Lp Sujoda | - | 3,789,479 | 0 | 05 Aug, 2025 |
| Robert Randolph Morse | - | 134,977 | 0 | 09 Apr, 2026 |
| John Charles Stone | Executive Vice President | 31,038 | 0 | 15 Feb, 2022 |
| Guillaume Marie Jean Rutten | President And Ceo | 552,558 | 0 | 02 Apr, 2026 |
| Megan Faust | Cfo | 134,138 | 0 | 02 Apr, 2026 |
| Maryfrances Mccourt | - | 55,918 | 0 | 16 Dec, 2025 |
| Daniel Jl Liao | - | 40,804 | 0 | 16 May, 2025 |
| Annuity Trust Under The Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 Qualified | - | 1,958,355 | 0 | 21 Jun, 2023 |
| Sung Shin | Executive Vice President | 15,418 | 0 | 05 Jun, 2023 |
| Farshad Haghighi | Executive Vice President | 8,354 | 0 | 26 Feb, 2026 |
| Llc Susins, | - | 164,678 | 0 | 20 Jan, 2022 |
| Management, Llc Sujoda | - | 0 | 3,789,479 | 05 Aug, 2025 |
| Y. Kim 2012 Generation-Skipping Trust U/A Dated December 11, 2012 Susan | - | 0 | 164,678 | 24 Jan, 2022 |
| Kevin K. Engel | President And Ceo | 7,920 | 0 | 02 Apr, 2026 |
| T. Kim 2024 Grat #2 Dtd. 08/09/2024 John | - | 59,250 | 0 | 06 Nov, 2025 |
| Grantor Retained Annuity Trust Of Susan Y. Kim Dtd. 8/5/2024 2024 | - | 1,124,000 | 0 | 24 Nov, 2025 |
| Grantor Retained Annuity Trust Of James J. Kim Dtd. 8/5/2024 2024 | - | 1,235,000 | 0 | 24 Nov, 2025 |
| Grantor Retained Annuity Trust Of Agnes C. Kim Dtd. 8/5/2024 2024 | - | 895,000 | 0 | 24 Nov, 2025 |
| T. Kim 2024 Grat #1 Dtd. 08/09/2024 John | - | 1,194,000 | 0 | 06 Nov, 2025 |
* 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.
| 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 | 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 | 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 |
| 16 Apr, 2026 | Mark N Rogers | Employee Stock Option (Right-to-Buy) | D | 5,000 | $0.00 | 90,000 | 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 | Susan Y Kim | Common Stock | A | 20,000 | $5.66 | 6,110,494 | D | M |
| 07 Apr, 2026 | Robert Randolph Morse | Common Stock | A | 20,000 | $5.66 | 137,355 | 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 |
| 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 | Maryfrances Mccourt | Restricted Stock Units | A | 16 | $0.00 | 8,896 | D | A |
| 31 Mar, 2026 | Maryfrances Mccourt | Restricted Stock Units | A | 16 | $0.00 | 8,896 | 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 |