Quick Takeaways
- James J. Kim filed SCHEDULE 13D/A for Amkor Technology, Inc. Common Stock, par value $0.001 per share (AMKR).
- Disclosed ownership: 34%.
- Date of event: 14 May 2025.
James J. Kim - 14 May 2025 SCHEDULE 13D/A Report for Amkor Technology, Inc. Common Stock, par value $0.001 per share (AMKR)
- Filing Manager
- James J. Kim
- Reporting Manager
- John T. Kim
- Symbol
- AMKR
- Shares outstanding
- 247,278,223 shares
- Disclosed Ownership
- 83,332,761 shares
- Ownership
- 34%
- Form type
- SCHEDULE 13D/A
- Filing time
- 16 May 2025, 16:05:21 UTC
- Date of event
- 14 May 2025
- Next filing
- 17 Feb 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"James J. Kim disclosed 34% ownership in Amkor Technology, Inc. Common Stock, par value $0.001 per share (AMKR) on 14 May 2025."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 16 May 2025, 16:05.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (49)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| James J. Kim | 0.2% | 521,828 | 521,828 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | 0001158839 |
| James J. Kim, as Trustee | 4% | 9,786,032 | 0 | 9,786,032 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| Agnes C. Kim | 0% | 95,000 | 95,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| John T. Kim | 34% | 83,332,761 | 46,972,606 | 36,360,155 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| John T. Kim, as Trustee | 11% | 27,832,765 | 10,192,233 | 7,539,500 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| David D. Kim | 1.4% | 3,356,636 | 8,746 | 0 | /s/ Kenneth R. Hillier, Attorney in Fact | Kenneth R. Hillier, Attorney in Fact | |
| David D. Kim, as Trustee | 1.1% | 2,698,513 | 1,363,400 | 1,335,113 | /s/ Kenneth R. Hillier, Attorney in Fact | Kenneth R. Hillier, Attorney in Fact | |
| Susan Y. Kim | 18% | 43,407,850 | 7,212,373 | 36,195,477 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| Susan Y. Kim, as Trustee | 8.7% | 21,520,737 | 13,483,005 | 7,539,500 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| Liam E. Blaney | 0.1% | 164,678 | 0 | 164,678 | /s/ Brian D. Short, Attorney-in-Fact | Brian D. Short, Attorney-in-Fact | |
| John T. Kim Trust of December 31, 1987 | 3.1% | 7,594,001 | 7,594,001 | 0 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94 | 0.4% | 961,113 | 0 | 961,113 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92 | 0.4% | 961,113 | 0 | 961,113 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01 | 0.4% | 961,113 | 0 | 961,113 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01 | 0.4% | 961,113 | 0 | 961,113 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03 | 0.4% | 961,113 | 0 | 961,113 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee | |
| Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05 | 0.5% | 1,335,113 | 0 | 1,335,113 | /s/ Kenneth R. Hillier, Attorney in Fact | David D. Kim, as Trustee | |
| James J. Kim 2008 Trust FBO Alexandra Kim Panichello and Descendants dated 2/5/08 | 0.2% | 546,787 | 0 | 546,787 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| James J. Kim 2008 Trust FBO Jacqueline Mary Panichello and Descendants dated 2/5/08 | 0.2% | 546,787 | 0 | 546,787 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| James J. Kim 2008 Trust FBO Dylan James Panichello and Descendants dated 2/5/08 | 0.2% | 546,787 | 0 | 546,787 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| James J. Kim 2008 Trust FBO Descendants of John T. Kim dated 2/5/08 | 0.4% | 1,093,574 | 0 | 1,093,574 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee | |
| James J. Kim 2008 Trust FBO Descendants of David D. Kim dated 2/5/08 | 0.6% | 1,363,400 | 1,363,400 | 0 | /s/ Kenneth R. Hillier, Attorney in Fact | David D. Kim, as Trustee | |
| The James and Agnes Kim Foundation, Inc. | 0.5% | 1,150,000 | 1,150,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Secretary | |
| 915 Investments, LP | 16% | 39,594,980 | 39,594,980 | 0 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as General Partner | |
| John T. Kim 2007 Children's Trust U/A dated 12/28/07 | 0.1% | 315,000 | 315,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Sujoda Investments, LP | 1.4% | 3,347,890 | 3,347,890 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Manager of Sujoda Management, LLC, its General Partner | |
| Qualified Annuity Trust under the Susan Y. Kim 2018-1 Irrevocable Trust Agreement dtd 8/29/18 | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | James J. Kim, as Trustee | |
| John T. Kim 2012 Generation-Skipping Trust U/A Dated 12/11/12 | 0.8% | 1,957,350 | 1,957,350 | 0 | /s/ Brian D. Short, Attorney-in-Fact | James J. Kim, as Trustee | |
| Family Trust under the John T. Kim 2018 Irrevocable Trust Agreement dated 2/6/18 | 0.2% | 498,232 | 498,232 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Family Trust under the John T. Kim 2012 Irrevocable Trust Agreement dated 12/11/12 | 3.2% | 7,828,682 | 7,828,682 | 0 | /s/ Brian D. Short, Attorney-in-Fact | James J. Kim, as Trustee | |
| Family Trust under the Susan Y. Kim 2012 Irrevocable Trust Agreement dated 7/26/12 | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Sujochil, LP | 7.9% | 19,484,809 | 0 | 19,484,809 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as General Partner | |
| Qualified Annuity Trust Under the Susan Y. Kim 2020-1 Irrevocable Trust Agreement dtd 04/01/20 | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Agnes C. Kim 2020-1 Qualified Annuity Trust U/A Dated 12/16/20 | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Alexandra Investments, LLC | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Manager | |
| Jacqueline Investments, LLC | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Manager | |
| Dylan Investments, LLC | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Manager | |
| Sujoda Management, LLC | 1.4% | 3,347,890 | 3,347,890 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Manager | |
| James J. Kim 2021 Qualified Annuity Trust U/A Dated 12/15/2021 | 0% | 0 | 0 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Trustee | |
| Susins, LLC | 0.1% | 164,678 | 0 | 164,678 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, Manager | |
| 2023 Grantor Retained Annuity Trust of James J. Kim dtd. 4/26/2023 | 1.5% | 3,587,004 | 3,587,004 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| 2023 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 4/26/2023 | 0.9% | 2,298,001 | 2,298,001 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 | 0.6% | 1,483,000 | 1,483,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| Kim Capital Partners - KCP, LLC | 6.8% | 16,710,668 | 0 | 16,710,668 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, Manager | |
| 2024 Grantor Retained Annuity Trust of Susan Y. Kim dtd. 8/5/2024 | 0.8% | 2,000,000 | 2,000,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| 2024 Grantor Retained Annuity Trust of James J. Kim dtd. 8/5/2024 | 0.9% | 2,200,000 | 2,200,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| 2024 Grantor Retained Annuity Trust of Agnes C. Kim dtd. 8/5/2024 | 0.6% | 1,600,000 | 1,600,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | Susan Y. Kim, as Trustee | |
| John T. Kim 2024 GRAT #1 dtd. 08/09/2024 | 0.8% | 2,000,000 | 2,000,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee | |
| John T. Kim 2024 GRAT #2 dtd. 08/09/2024 | 0% | 100,000 | 100,000 | 0 | /s/ Brian D. Short, Attorney-in-Fact | John T. Kim, as Trustee |