| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| KIM SUSAN Y | Director, 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 | 30 Dec 2025 | 0001158922 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMKR | Common Stock | Gift | $0 | -725,000 | -39% | $0.000000 | 1,124,000 | 26 Dec 2025 | By own GRATs | F1, F2, F3, F4 |
| holding | AMKR | Common Stock | 19,484,809 | 26 Dec 2025 | By Sujochil, LP | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 16,710,668 | 26 Dec 2025 | By Kim Capital Partners - KCP, LLC | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 6,090,494 | 26 Dec 2025 | Direct | ||||||
| holding | AMKR | Common Stock | 3,789,479 | 26 Dec 2025 | By Sujoda Investments, LP | F2, F3, F4, F5 | |||||
| holding | AMKR | Common Stock | 3,713,610 | 26 Dec 2025 | By trusts (excl. GRATs) | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 3,244,594 | 26 Dec 2025 | 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 2,538,000 | 26 Dec 2025 | 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 1,235,000 | 26 Dec 2025 | By James J. Kim 2024 GRAT dtd. 8/5/24 | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 895,000 | 26 Dec 2025 | By Agnes C. Kim 2024 GRAT dtd. 8/5/24 | F2, F3, F4 |
| Id | Content |
|---|---|
| F1 | On December 26, 2025, the 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 725,000 shares of common stock of Amkor, Inc. (the "Issuer") to the Susan Y. Kim 2023 Family Distribution Trust. The Reporting Person is the trustee of the 2023 Grantor Retained Annuity Trust Dated 9/15/2023. John T. Kim and James J. Kim are co-trustees of the Susan Y. Kim 2023 Family Distribution Trust. |
| F2 | The Reporting Person is (i) a trustee of trusts for the benefit of her immediate family members (other than grantor retained annuity trusts ("GRATs")) which own 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 7,912,594 shares of the Issuer's Common Stock; (iii) a trustee of GRATs of which the Reporting Person was the settlor and is the sole annuitant which own 1,124,000 shares of the Issuer's Common Stock; (iv) a general partner of a limited partnership (Sujochil, LP) which owns 19,484,809 shares of the Issuer's Common Stock |
| F3 | (Continued from Footnote 2) (v) a manager of a limited liability company being treated as a corporation for purposes of Section 16 which owns 16,710,668 shares of the Issuer's Common Stock , and (vi) a member of Sujoda Management, LLC, which indirectly owns 3,789,479 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. |
| 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 sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and pursuant to the Form 4 instructions, the Reporting Person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person. |
(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.