| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| KIM SUSAN Y | Director, Member of 10% owner group (10), 10%+ Owner | C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI | /s/ Mark N. Rogers, Attorney-in-Fact for Susan Y. Kim | 2025-11-23 | 0001158922 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | AMKR | Common Stock | Gift | $0 | +876K | +19.66% | $0.00 | 5.33M | Nov 20, 2025 | Direct | F1 |
| transaction | AMKR | Common Stock | Gift | $0 | -876K | -25.15% | $0.00 | 2.61M | Nov 20, 2025 | By own GRATs | F1, F2, F3, F4 |
| transaction | AMKR | Common Stock | Gift | $0 | -965K | -21.84% | $0.00 | 3.45M | Nov 20, 2025 | By trusts (excl. GRATs) | F2, F3, F4, F5 |
| transaction | AMKR | Common Stock | Award | $0 | +965K | +27.94% | $0.00 | 4.42M | Nov 20, 2025 | By trusts (excl. GRATs) | F2, F3, F4, F5 |
| transaction | AMKR | Common Stock | Gift | $0 | -705K | -15.96% | $0.00 | 3.71M | Nov 20, 2025 | By trusts (excl. GRATs) | F2, F3, F4, F6 |
| holding | AMKR | Common Stock | 19.5M | Nov 20, 2025 | By Sujochil, LP | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 16.7M | Nov 20, 2025 | By Kim Capital Partners - KCP, LLC | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 3.79M | Nov 20, 2025 | By Sujoda Investments, LP | F2, F3, F4, F7 | |||||
| holding | AMKR | Common Stock | 2.2M | Nov 20, 2025 | By James J. Kim 2024 GRAT dtd. 8/5/24 | F2, F3, F4 | |||||
| holding | AMKR | Common Stock | 1.6M | Nov 20, 2025 | By Agnes C. Kim 2024 GRAT dtd. 8/5/24 | F2, F3, F4 |
| Id | Content |
|---|---|
| F1 | On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024 distributed 876,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the Reporting Person. The Reporting Person is the sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024. Because the Reporting Person is the annuitant and sole trustee of the 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024, the distribution was a mere change in the form of ownership from indirect to direct and thus being voluntarily reported by the Reporting Person on this Form 4. |
| 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 3,453,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 3,800,000 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 2,607,00 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) as referenced in Footnote 9, below, 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 | On November 20, 2025, the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024 distributed 965,000 shares of the Common Stock of the Issuer to the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. The Reporting Person is the trustee of the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024. The Reporting Person and James J. Kim are co-trustees of the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18. |
| F6 | On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the the Agnes C. Kim Revocable Trust, of which Agnes C. Kim is the sole settlor, sole beneficiary, and sole trustee. Susan Y. Kim is the sole trustee of the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024. |
| F7 | 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. |
8. 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.