James J. Kim - 12 Feb 2026 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
Security
Amkor Technology, Inc. Common Stock, par value $0.001 per share
Symbol
AMKR
Shares outstanding
247,013,452 shares
Disclosed Ownership
75,339,103 shares
Ownership
30%
Form type
SCHEDULE 13D/A
Filing time
17 Feb 2026, 16:15:02 UTC
Date of event
12 Feb 2026
Previous filing
16 May 2025
SEC
View on sec.gov

Quoteable Key Fact

"James J. Kim disclosed 30% ownership in Amkor Technology, Inc. Common Stock, par value $0.001 per share (AMKR) on 12 Feb 2026."

Quick Takeaways

  • James J. Kim filed SCHEDULE 13D/A for Amkor Technology, Inc. Common Stock, par value $0.001 per share (AMKR).
  • Disclosed ownership: 30%.
  • Date of event: 12 Feb 2026.

What Changed

  • Previous schedule filing date: 16 May 2025.
  • Current filing was accepted on 17 Feb 2026, 16:15.

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

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (44)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
James J. Kim 0.2% 511,645 511,645 0 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-fact 0001158839
James J. Kim, as Trustee 4.3% 10,511,032 0 10,511,032 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-Fact
Agnes C. Kim 0% 0 0 0 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-Fact
John T. Kim 30% 75,339,103 38,978,948 36,360,155 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-Fact
John T. Kim, as Trustee 11% 27,711,015 9,345,483 8,264,500 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-Fact
David D. Kim 1.5% 3,798,225 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 19% 46,195,450 9,999,973 36,195,477 /s/ Brian D. Short, Attorney-in-Fact Brian D. Short, Attorney-in-Fact
Susan Y. Kim, as Trustee 7% 17,389,326 9,351,594 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 12% 29,594,980 29,594,980 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 1.5% 3,789,479 3,789,479 0 /s/ Brian D. Short, Attorney-in-Fact Susan Y. Kim, as Manager of Sujoda Management, LLC, its General Partner
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
Sujochil, LP 7.9% 19,484,809 0 19,484,809 /s/ Brian D. Short, Attorney-in-Fact John T. Kim, as General Partner
Sujoda Management, LLC 1.5% 3,789,479 3,789,479 0 /s/ Brian D. Short, Attorney-in-Fact Susan Y. Kim, Manager
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 0% 0 0 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% 0 0 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% 0 0 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 0.5% 1,124,000 1,124,000 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 0.5% 1,235,000 1,235,000 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 0.4% 895,000 895,000 0 /s/ Brian D. Short, Attorney-in-Fact Susan Y. Kim, as Trustee
John T. Kim 2024 GRAT #1 dtd. 08/09/2024 0.5% 1,194,000 1,194,000 0 /s/ Brian D. Short, Attorney-in-Fact John T. Kim, as Trustee
John T. Kim 2024 GRAT #2 dtd. 08/09/2024 0% 59,250 59,250 0 /s/ Brian D. Short, Attorney-in-Fact John T. Kim, as Trustee
Susan Y. Kim 2023 Family Distribution Trust 0.3% 725,000 0 725,000 /s/ Brian D. Short, Attorney-in-Fact John T. Kim, as Trustee
2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim 1% 2,538,000 2,538,000 0 /s/ Brian D. Short, Attorney-in-Fact Susan Y. Kim, as Trustee
2025 Grantor Retained Annuity Trust No.1 of James J. Kim 1.3% 3,244,594 3,244,594 0 /s/ Brian D. Short, Attorney-in-Fact Susan Y. Kim, as Trustee
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