Amkor Technology's three largest insider shareholders as of March 23, 2026 are John T Kim (TenPercentOwner, 29.59Mn shares), Investments, Lp 915 (Other, 29.59Mn shares), Agnes C Kim (Other, 10.74Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| John T Kim | 0 | 29,594,980 | 17 Feb, 2026 | |
| Agnes C Kim | 0 | 10,737,355 | 30 Dec, 2025 | |
| Susan Y Kim | 6,090,494 | 0 | 08 Dec, 2025 | |
| John T Kim | 5,594,489 | 0 | 06 Nov, 2025 | |
| Investments, Lp Sujoda | 3,789,479 | 0 | 05 Aug, 2025 | |
| Management, Llc Sujoda | 0 | 3,789,479 | 05 Aug, 2025 | |
| David D Kim | 0 | 3,789,479 | 05 Aug, 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 | |
| James J Kim | 0 | 725,000 | 30 Dec, 2025 | |
| Guillaume Marie Jean Rutten | 543,866 | 0 | 26 Feb, 2026 | |
| 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 | |
| Megan Faust | Cfo | 129,171 | 0 | 26 Feb, 2026 |
| Gil C. Tily | 123,806 | 0 | 16 Dec, 2025 | |
| David N Watson | 120,757 | 0 | 26 Feb, 2026 | |
| Robert Randolph Morse | 117,355 | 0 | 16 May, 2025 | |
| Roger Anthony Carolin | 94,409 | 0 | 16 May, 2025 | |
| James J Kim | 61,645 | 0 | 23 Dec, 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 | |
| Daniel Jl Liao | 40,804 | 0 | 16 May, 2025 | |
| Mark N Rogers | Evp General Counsel | 38,904 | 0 | 18 Mar, 2026 |
| John Charles Stone | Executive Vice President | 31,038 | 0 | 15 Feb, 2022 |
| Winston J Churchill | 25,888 | 0 | 17 Dec, 2025 | |
| Sung Shin | Executive Vice President | 15,418 | 0 | 05 Jun, 2023 |
| Farshad Haghighi | Executive Vice President | 8,354 | 0 | 26 Feb, 2026 |
| John D Liu | 2,983 | 0 | 16 May, 2025 | |
| Kevin K. Engel | President And Ceo | 2,953 | 0 | 26 Feb, 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 16 Mar, 2026 | Mark N Rogers | Common Stock | A | 5,000 | $7.40 | 43,904 | D | M |
| 16 Mar, 2026 | Mark N Rogers | Common Stock | D | 5,000 | $44.54 | 38,904 | D | S |
| 16 Mar, 2026 | Mark N Rogers | Employee Stock Option (Right-to-Buy) | D | 5,000 | $0.00 | 95,000 | D | M |
| 12 Mar, 2026 | Cherie Buntyn | Restricted Stock Units | A | 799 | $0.00 | 799 | D | A |
| 24 Feb, 2026 | Mark N Rogers | Common Stock | A | 1,880 | $0.00 | 39,710 | D | M |
| 24 Feb, 2026 | Guillaume Marie Jean Rutten | Common Stock | A | 10,748 | $0.00 | 563,866 | D | M |
| 24 Feb, 2026 | Megan Faust | Common Stock | A | 3,493 | $0.00 | 130,668 | D | M |
| 25 Feb, 2026 | David N Watson | Common Stock | A | 20,000 | $5.66 | 122,980 | D | M |
| 24 Feb, 2026 | Kevin K. Engel | Common Stock | A | 910 | $0.00 | 15,825 | D | M |
| 24 Feb, 2026 | Farshad Haghighi | Common Stock | A | 1,814 | $0.00 | 24,793 | D | M |
| 24 Feb, 2026 | Mark N Rogers | Common Stock | D | 806 | $48.53 | 38,904 | D | F |
| 24 Feb, 2026 | Guillaume Marie Jean Rutten | Common Stock | D | 20,000 | $48.80 | 543,866 | D | S |
| 24 Feb, 2026 | Farshad Haghighi | Common Stock | D | 815 | $48.53 | 23,978 | D | F |
| 24 Feb, 2026 | Kevin K. Engel | Common Stock | D | 372 | $48.53 | 15,453 | D | F |
| 24 Feb, 2026 | Megan Faust | Common Stock | D | 1,497 | $48.53 | 129,171 | D | F |
| 25 Feb, 2026 | David N Watson | Common Stock | D | 2,223 | $0.00 | 120,757 | D | F |
| 24 Feb, 2026 | Mark N Rogers | Restricted Stock Units | D | 1,880 | $0.00 | 0 | D | M |
| 24 Feb, 2026 | Megan Faust | Restricted Stock Units | D | 3,493 | $0.00 | 0 | D | M |
| 24 Feb, 2026 | Guillaume Marie Jean Rutten | Restricted Stock Units | D | 10,748 | $0.00 | 0 | D | M |
| 24 Feb, 2026 | Kevin K. Engel | Common Stock | D | 12,500 | $48.75 | 2,953 | D | S |