Form 4: Amkor Director Kim Reports Internal Share Transfers

Susan Y. Kim, a Director and 10% owner of Amkor Technology, Inc., reported several non-market share transfers related to grantor retained annuity trusts (GRATs) and other family trusts.

Summary

• Susan Y. Kim, a Director and 10% owner of Amkor Technology, Inc. (AMKR), reported multiple transactions involving the company's common stock.
• These transactions, dated November 20, 2025, were primarily distributions from various Grantor Retained Annuity Trusts (GRATs) and other family trusts.
• 876,000 shares were distributed from the 2024 Grantor Retained Annuity Trust of Susan Y. Kim to the Reporting Person, changing ownership from indirect to direct, resulting in 5,332,494 directly owned shares.
• 965,000 shares were distributed from the 2024 Grantor Retained Annuity Trust of James J. Kim to the James J. Kim 2018-1 Qualified Annuity Trust, increasing indirect ownership by trusts (excluding GRATs) to 4,418,610 shares.
• 705,000 shares were distributed from the 2024 Grantor Retained Annuity Trust of Agnes C. Kim to the Agnes C. Kim Revocable Trust, decreasing indirect ownership by trusts (excluding GRATs) to 3,713,610 shares.
• All reported transactions were non-market transfers with a price of $0 per share.
• The filing indicates these transactions were made pursuant to a Rule 10b5-1(c) plan, signifying pre-planned arrangements.
• The Reporting Person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest.

Sentiment

Score: 5

Explanation: The filing reports internal, pre-planned transfers of shares between trusts and the reporting person, which are administrative in nature and do not reflect a change in investment sentiment or company fundamentals. The transactions are neutral in their impact on the company's valuation or operational outlook.

Positives

• The transactions are part of pre-planned arrangements under Rule 10b5-1(c), indicating structured estate planning rather than reactive market activity.
• The transactions represent internal transfers within family trusts, not open market sales that would reduce overall insider exposure to the company.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Industry Context

This Form 4 filing details insider transactions related to estate planning and trust management for a director and significant shareholder. It does not provide information relevant to broader industry trends or competitive landscape analysis for the semiconductor packaging and test industry.

Related Party Transactions

• The transactions involve distributions from Grantor Retained Annuity Trusts (GRATs) and other family trusts where Susan Y. Kim is a trustee or co-trustee, and beneficiaries include immediate family members.
• Susan Y. Kim is a general partner of Sujochil, LP, a manager of Kim Capital Partners KCP, LLC, and a member of Sujoda Management, LLC, all of which hold significant shares of the Issuer. These entities represent related party interests.

Stakeholder Impact

• Shareholders: The transactions represent a reallocation of ownership within the existing insider group, with no direct impact on the total outstanding shares or the company's market capitalization. The overall beneficial ownership by the Kim family remains substantial.
• Employees, Customers, Suppliers, Creditors: No direct impact on these stakeholders is indicated by these internal share transfers.

Key Dates

Recommendation

This Form 4 filing details internal, pre-planned transfers of shares between various family trusts and the reporting person, Susan Y. Kim. These transactions are administrative in nature, primarily for estate planning purposes, and do not reflect any change in the company's operational performance, financial health, or strategic direction. As such, they do not provide new information that would warrant a change in an investor's fundamental assessment of Amkor Technology, Inc. The overall beneficial ownership by the insider group remains significant, indicating continued alignment of interests. Therefore, a 'hold' recommendation is appropriate as the filing does not present a catalyst for either buying or selling the stock.

Keywords

Amkor Technology, AMKR, SEC Form 4, Insider Transaction, Beneficial Ownership, Grantor Retained Annuity Trust, GRAT, Trust Distribution, Estate Planning, Rule 10b5-1, Director, 10% Owner