In the last 12 months, insiders at Amkor Technology made open-market sales of $507.54 million (10.41Mn shares) and bought no shares on the open market.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Investments, Lp 915 | Other | 29,594,980 | 0 | 29,594,980 | 30.7% | 17 Feb, 2026 |
| 2 | John T Kim | TenPercentOwner, Other | 0 | 29,594,980 | 29,594,980 | 30.7% | 17 Feb, 2026 |
| 3 | Agnes C Kim | Other | 0 | 11,187,355 | 11,187,355 | 11.6% | 22 Jul, 2026 |
| 4 | Susan Y Kim | Director, TenPercentOwner, Other | 6,120,387 | 0 | 6,120,387 | 6.3% | 12 Jun, 2026 |
| 5 | Investments, Lp Sujoda | Other | 3,789,479 | 0 | 3,789,479 | 3.9% | 05 Aug, 2025 |
| 6 | David D Kim | Other | 0 | 3,789,479 | 3,789,479 | 3.9% | 05 Aug, 2025 |
| 7 | Management, Llc Sujoda | Other | 0 | 3,789,479 | 3,789,479 | 3.9% | 05 Aug, 2025 |
| 8 | Annuity Trust Under The Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 Qualified | Other | 1,958,355 | 0 | 1,958,355 | 2.0% | 21 Jun, 2023 |
| 9 | Grantor Retained Annuity Trust Of James J. Kim Dtd. 8/5/2024 2024 | Other | 1,235,000 | 0 | 1,235,000 | 1.3% | 24 Nov, 2025 |
| 10 | T. Kim 2024 Grat #1 Dtd. 08/09/2024 John | Other | 1,194,000 | 0 | 1,194,000 | 1.2% | 06 Nov, 2025 |
| 11 | Grantor Retained Annuity Trust Of Susan Y. Kim Dtd. 8/5/2024 2024 | Other | 1,124,000 | 0 | 1,124,000 | 1.2% | 24 Nov, 2025 |
| 12 | Grantor Retained Annuity Trust Of Agnes C. Kim Dtd. 8/5/2024 2024 | Other | 895,000 | 0 | 895,000 | 0.9% | 24 Nov, 2025 |
| 13 | James J Kim | Chief Executive Officer | 511,645 | 0 | 511,645 | 0.5% | 22 Jul, 2026 |
| 14 | Guillaume Marie Jean Rutten | President And Ceo | 461,732 | 0 | 461,732 | 0.5% | 07 Aug, 2026 |
| 15 | Llc Susins, | Other | 164,678 | 0 | 164,678 | 0.2% | 20 Jan, 2022 |
| 16 | Y. Kim 2012 Generation-Skipping Trust U/A Dated December 11, 2012 Susan | Other | 0 | 164,678 | 164,678 | 0.2% | 24 Jan, 2022 |
| 17 | Robert Randolph Morse | Director | 134,977 | 0 | 134,977 | 0.1% | 09 Apr, 2026 |
| 18 | Megan Faust | Cfo | 133,105 | 0 | 133,105 | 0.1% | 15 Oct, 2026 |
| 19 | David N Watson | Director | 130,650 | 0 | 130,650 | 0.1% | 15 May, 2026 |
| 20 | Gil C. Tily | Cao General Counsel | 118,699 | 0 | 118,699 | 0.1% | 15 May, 2026 |
| 21 | Roger Anthony Carolin | Director | 94,409 | 0 | 94,409 | 0.1% | 07 May, 2026 |
| 22 | Maryfrances Mccourt | Director | 65,811 | 0 | 65,811 | 0.1% | 15 May, 2026 |
| 23 | T. Kim 2024 Grat #2 Dtd. 08/09/2024 John | Other | 59,250 | 0 | 59,250 | 0.1% | 06 Nov, 2025 |
| 24 | Daniel Jl Liao | Director | 40,804 | 0 | 40,804 | 0.0% | 16 May, 2025 |
| 25 | Mark N Rogers | Evp General Counsel | 38,904 | 0 | 38,904 | 0.0% | 19 Aug, 2026 |
| 26 | John Charles Stone | Executive Vice President | 31,038 | 0 | 31,038 | 0.0% | 15 Feb, 2022 |
| 27 | Douglas A Alexander | Director | 29,109 | 0 | 29,109 | 0.0% | 06 Oct, 2026 |
| 28 | Winston J Churchill | Director | 28,681 | 0 | 28,681 | 0.0% | 31 Jul, 2026 |
| 29 | Sung Shin | Executive Vice President | 15,418 | 0 | 15,418 | 0.0% | 05 Jun, 2023 |
| 30 | Kevin K. Engel | President And Ceo | 9,666 | 0 | 9,666 | 0.0% | 31 Jul, 2026 |
| 31 | Farshad Haghighi | Executive Vice President | 8,354 | 0 | 8,354 | 0.0% | 26 Feb, 2026 |
| 32 | John D Liu | Director | 2,983 | 0 | 2,983 | 0.0% | 16 May, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 13 Oct, 2026 | Megan Faust | Cfo | Disposed S | 1,000 | $46.92 | $46.92K | 133,105 | Direct |
| 02 Oct, 2026 | Douglas A Alexander | Director | Acquired M | 5,000 | $8.51 | $42.55K | 34,109 | Direct |
| 02 Oct, 2026 | Douglas A Alexander | Director | Disposed S | 5,000 | $55.00 | $275.00K | 29,109 | Direct |
| 02 Oct, 2026 | Douglas A Alexander | Director | Disposed M | 5,000 | $0.00 | $0 | 9,657 | Direct |
| 22 Sep, 2026 | Roger Anthony Carolin | Director | Acquired A | 13 | $0.00 | $0 | 8,917 | Direct |
| 22 Sep, 2026 | Guillaume Marie Jean Rutten | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Gil C. Tily | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Maryfrances Mccourt | Director | Acquired A | 13 | $0.00 | $0 | 8,917 | Direct |
| 22 Sep, 2026 | Winston J Churchill | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | David N Watson | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Daniel Jl Liao | Director | Acquired A | 15 | $0.00 | $0 | 9,917 | Direct |
| 22 Sep, 2026 | Robert Randolph Morse | Director | Acquired A | 13 | $0.00 | $0 | 8,917 | Direct |
| 22 Sep, 2026 | Douglas A Alexander | Director | Acquired A | 13 | $0.00 | $0 | 9,260 | Direct |
| 22 Sep, 2026 | Douglas A Alexander | Director | Acquired A | 13 | $0.00 | $0 | 8,917 | Direct |
| 22 Sep, 2026 | Roger Anthony Carolin | Director | Acquired A | 15 | $0.00 | $0 | 9,917 | Direct |
| 22 Sep, 2026 | Maryfrances Mccourt | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Daniel Jl Liao | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Robert Randolph Morse | Director | Acquired A | 15 | $0.00 | $0 | 9,917 | Direct |
| 22 Sep, 2026 | Roger Anthony Carolin | Director | Acquired A | 4 | $0.00 | $0 | 2,620 | Direct |
| 22 Sep, 2026 | Douglas A Alexander | Director | Acquired A | 15 | $0.00 | $0 | 9,917 | Direct |