Form 4 for AMKR AMKOR TECHNOLOGY, INC.
Accepted 2025-12-08 00:00:00 ET · period of report 2025-12-04 · accession 0001158922-25-000017 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-12-08 | 2025-12-04 | AMKR | KIM SUSAN Y | Dir, 10%, Member of 10% owner group (6) | G - Gift | $0.00 | +758.0K | 6.09M | +14% | $0 | |
| I | 2025-12-08 | 2025-12-04 | AMKR | KIM SUSAN Y | Dir, 10%, Member of 10% owner group (6) | G - Gift | $0.00 | -758.0K | 1.85M | -29% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-12-04 | G | A | 758,000 | $0.00 | 6,090,494 | D | — | — | (F1) On December 4, 2025, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 758,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person as a gift. Because the Reporting Person is the annuitant and sole trustee of the trust, such distribution was a mere change in the form of ownership from indirect to direct and is being voluntarily reported by the Reporting Person on this Form 4. |
| 2 | Common | Common Stock | 2025-12-04 | G | D | 758,000 | $0.00 | 1,849,000 | I By own GRATs | — | — | (F1) On December 4, 2025, the Susan Y. Kim 2023 Grantor Retained Annuity Trust dated 9/15/2023 distributed 758,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person as a gift. Because the Reporting Person is the annuitant and sole trustee of the trust, such distribution was a mere change in the form of ownership from indirect to direct and is 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 3,713,610 shares of the Common Stock of the Issuer); (ii) a trustee of GRATs for the benefit of members of her immediate family which own 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 1,849,000 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 (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. (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. |