KIM SUSAN Y 4
4 · AMKOR TECHNOLOGY, INC. · Filed Jun 12, 2026
Research Summary
AI-generated summary of this filing
Amkor (AMKR) 10% Owner Susan Y. Kim Receives RSU Award
What Happened
Susan Y. Kim, a reported 10% owner of Amkor Technology, Inc. (AMKR), received 9,893 shares of AMKR common stock as the result of vested restricted stock units (RSUs) and dividend equivalent units (DEUs) converting to shares. The Form 4 reports the acquisition at $0.00 because these shares resulted from prior equity awards vesting and converting rather than an open‑market purchase.
Key Details
- Transaction date: June 12, 2026 (conversion of vested RSUs/DEUs into common stock). Transaction code: A (award/grant/acquisition).
- Shares acquired: 9,893 shares (9,789 RSUs originally granted on May 15, 2025 plus 104 DEUs). Price reported: $0.00.
- Reported beneficial/pecuniary interest: the filing treats Ms. Kim as having a pecuniary interest in 36,024,492 shares via trusts, GRATs, partnerships and related entities (see footnotes).
- Filing timeliness: Reported on June 12, 2026 (period of report same date) — appears timely.
- Notable footnotes: RSUs granted May 15, 2025 vested May 13, 2026 (plus 104 DEUs) and converted one‑for‑one to common stock on June 12, 2026. The reporting person disclaims beneficial ownership except to the extent of her pecuniary interest and is a trustee/partner/member of entities with large holdings (see F2–F4). Remark clarifies the filing is not an admission of ownership of other group members' shares.
Context
This was a vesting/conversion of equity awards, not an open‑market purchase or sale. Such award‑based acquisitions reflect compensation or dividend equivalents becoming shares; they do not necessarily signal direct buying or selling intent. As a 10% owner with holdings routed through trusts and partnerships, the report focuses on pecuniary interest and estate/ownership structures rather than standard executive trading.
Insider Transaction Report
- Award
Common Stock
[F1]2026-06-12+9,893→ 6,120,387 total
- 3,244,594(indirect: By Trust)
Common Stock
[F2][F3] - 2,538,000(indirect: By Trust)
Common Stock
[F2][F3] - 1,235,000(indirect: By James J. Kim 2024 GRAT dtd. 8/5/24)
Common Stock
[F2][F3] - 895,000(indirect: By Agnes C. Kim 2024 GRAT dtd. 8/5/24)
Common Stock
[F2][F3] - 1,124,000(indirect: By own GRATs)
Common Stock
[F2][F3] - 3,713,610(indirect: By Trust)
Common Stock
[F2][F3] - 3,789,479(indirect: By Sujoda Investments, LP)
Common Stock
[F2][F3][F4] - 19,484,809(indirect: By Sujochil, LP)
Common Stock
[F2][F3]
Footnotes (4)
- [F1]On May 15, 2025, the Reporting Person was granted 9,789 time-vested restricted stock units ("RSUs") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan, as amended, and the applicable award agreement. On May 13, 2026, the RSUs, plus an additional 104 dividend equivalent units ("DEUs"), which each represented an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued, vested. On June 12, 2026, the RSUs and DEUs converted into common stock of the Issuer on a one-for-one basis.
- [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 Issuer's Common Stock; (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; and (v) 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.
- [F3]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.
- [F4]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.