SCHEDULE 13D/A: Amkor Technology's Controlling Kim Family Reduces Margin Credit Line to $250 Million

The Kim family, a controlling shareholder group of Amkor Technology, Inc., has amended its secured margin line of credit, reducing the aggregate principal amount from $350 million to $250 million following a partial paydown.

Summary

• This document is Amendment No. 19 to the Schedule 13D filing for Amkor Technology, Inc., updating beneficial ownership information for the Kim family and related entities.
• The Kim family group collectively beneficially owns 132,672,101 shares of Amkor Technology Common Stock, representing approximately 53.7% of the outstanding shares.
• This ownership percentage is calculated based on 247,056,288 outstanding shares as of April 22, 2025, and includes 570,000 shares exercisable via options within 60 days of May 14, 2025.
• On May 14, 2025, 915 Investments, LP, a Kim family entity, amended its secured margin line of credit note with JPMorgan Chase Bank, N.A.
• The aggregate principal amount of the credit line was reduced from $350 million to $250 million, following a partial paydown of obligations by the Borrower.
• The obligations under the Note continue to be guaranteed by Susan Y. Kim and Susan Y. Kim, as trustee of the Susan Y. Kim Trust of December 31, 1987.

Sentiment

Score: 6

Explanation: The document is largely neutral, providing factual updates on beneficial ownership and a credit line amendment. The reduction in the credit line could be viewed as a minor positive, indicating debt paydown by the shareholder group, but it does not directly reflect on the company's operational performance.

Positives

• The reduction of the secured margin line of credit from $350 million to $250 million indicates a paydown of debt by the borrowing entity, 915 Investments, LP.

Risks

• The existence of a secured margin line of credit, even if reduced, implies that a significant portion of the beneficial ownership shares may be pledged as collateral, which could lead to forced sales in the event of margin calls or significant stock price declines.

Future Outlook

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

Industry Context

This filing primarily concerns the beneficial ownership and financing arrangements of a controlling shareholder group, rather than the operational or strategic performance of Amkor Technology, Inc. itself. Therefore, it does not directly relate to broader industry trends or competitive dynamics within the semiconductor packaging and test services sector.

Related Party Transactions

• 915 Investments, LP, an entity for which John T. Kim (a member of the Kim family group) is the sole general partner, entered into a secured margin line of credit note with JPMorgan Chase Bank, N.A.
• The obligations under this Note are guaranteed by Susan Y. Kim (Executive Chairman of the Board and a Kim family member) and Susan Y. Kim, as trustee of the Susan Y. Kim Trust of December 31, 1987.

Stakeholder Impact

• Shareholders: Provides updated information on the significant beneficial ownership stake held by the Kim family group, which maintains majority control. The reduction in the margin loan could be seen as a minor positive for the financial stability of the controlling shareholder group.
• Creditors: The amendment to the credit line reflects a change in the debt exposure of 915 Investments, LP, a borrower, and its guarantors.

Key Dates

Keywords

Amkor Technology, SEC filing, Schedule 13D, beneficial ownership, Kim family, margin loan, credit line, semiconductor packaging, corporate governance, shareholder group