| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| KIM JAMES J | Member of 10% owner group (6), 10%+ Owner | C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI | /s/ Brian D. Short, Attorney-in-Fact for James J. Kim | 23 Dec 2025 | 0001158839 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMKR | Common Stock | Gift | $0 | -3,244,594 | -98% | $0.000000 | 61,645 | 19 Dec 2025 | Direct | F1, F2 |
| transaction | AMKR | Common Stock | Gift | $0 | -2,538,000 | -100% | $0.000000 | 0 | 19 Dec 2025 | By Spouse | F3 |
| holding | AMKR | Common Stock | 7,828,682 | 19 Dec 2025 | By John T. Kim Family Trust U/A dtd. 12/11/12 | F4, F5 | |||||
| holding | AMKR | Common Stock | 1,957,350 | 19 Dec 2025 | By John T. Kim G-S Trust dtd. 12/11/12 | F4, F5 | |||||
| holding | AMKR | Common Stock | 164,678 | 19 Dec 2025 | By self as Trustee of Trust U/A dtd. 12/11/12 | F4, F5 |
| Id | Content |
|---|---|
| F1 | On November 24, 2025, the Reporting Person reported that the 2024 Grantor Retained Annuity Trust of John J. Kim 8/5/2024 distributed 965,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the James J. Kim Revocable Trust dtd 08/30/2018. These shares were inadvertently reported as being held indirectly by the James J. Kim 2018-1 Qualified Annuity Trust U/A on a Form 4 filed by the Reporting Person on November 24, 2025. These shares were direct holdings of the Reporting Person, as the Reporting Person is the settlor, sole trustee, and sole beneficiary of such trust. |
| F2 | On December 19, 2025, the Reporting Person made a distribution of 3,244,594 shares of common stock of the Issuer to the 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim. Susan Y. Kim is the sole trustee of the 2025 Grantor Retained Annuity Trust No.1 of James J. Kim. |
| F3 | On December 19, 2025, the spouse of the Reporting Person, Agnes C. Kim, made a distribution of 2,538,000 shares of common stock of the Issuer to the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim. Susan Y. Kim is the sole trustee of the 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim. |
| F4 | The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or for any other purpose. |
| F5 | The Reporting Person is (i) a trustee of trusts for the benefit of his immediate family members which own 9,786,032 shares of the Issuer's Common Stock (ii) a trustee of a trust which is a controlling member of a limited liability company being treated as a corporation for purposes of Section 16, which limited liability company holds 164,678 shares of the Issuer's Common stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares. |
(6) The Reporting Person states that the filing of this Form 4 shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities owned by the other members of the group, for the purpose of Section 16 or for any other purpose.