Form 4: Amkor Technology Insider Trust Distributes 725,000 Shares

A trust associated with a 10% owner of Amkor Technology, Inc. distributed 725,000 shares of common stock to a family trust.

Summary

• The 2023 Grantor Retained Annuity Trust of Susan Y. Kim, identified as a member of a 10% owner group of Amkor Technology, Inc. (AMKR), distributed 725,000 shares of common stock.
• The transaction, coded as 'G' for gift or distribution, occurred on December 26, 2025.
• The shares were transferred to the Susan Y. Kim 2023 Family Distribution Trust.
• John T. Kim and James J. Kim are listed as co-trustees of the recipient trust.
• The reporting person explicitly disclaims beneficial ownership of these securities, except to the extent of their pecuniary interest.

Sentiment

Score: 5

Explanation: This Form 4 reports an internal transfer of shares within a family trust structure, which is a neutral event for the company's operational performance or financial health.

Future Outlook

No forward-looking statements or guidance were provided in this filing.

Industry Context

This filing reports an internal transfer of shares by a significant shareholder and does not directly relate to broader industry trends or the competitive landscape of the semiconductor packaging and test services sector.

Related Party Transactions

• The distribution of 725,000 shares of common stock from the 2023 Grantor Retained Annuity Trust of Susan Y. Kim to the Susan Y. Kim 2023 Family Distribution Trust is considered a related party transaction due to the familial relationship and shared beneficial ownership interests.

Stakeholder Impact

• The transaction represents a shift in the indirect beneficial ownership structure among the Kim family, who are significant shareholders, but does not alter the total outstanding shares or the company's operational control.

Key Dates

Keywords

Amkor Technology, AMKR, Insider Transaction, Form 4, Stock Distribution, Trust, Beneficial Ownership