v3.26.1
Debt
 3 Months Ended
Mar. 31, 2026
Debt Disclosure [Abstract]  
Debt Debt
Short-term borrowings and long-term debt consist of the following:
March 31, 2026December 31, 2025
 (In thousands)
Debt of Amkor Technology, Inc.:   
Senior notes:
5.875% Senior notes, due October 2033
$500,000 $500,000 
Other:
2025 Revolving Credit Facility, applicable bank rate plus 1.75%, due May 2030 (1)
— — 
Term A Loans, applicable bank rate plus 1.75%, 5.45% as of March 31, 2026, due May 2030
496,875 500,000 
Debt of subsidiaries:   
Amkor Technology Korea, Inc.:
Term loan, fixed rate at 3.95%, due May 2027 (2)
— — 
Term loan, fixed rate at 2.12%, due December 2028
150,000 150,000 
Amkor Technology Japan, Inc.:
Short-term term loans, variable rate (3)— — 
Term loan, fixed rate at 1.23%, due December 2026
12,380 16,719 
Term loan, fixed rate at 1.59%, due December 2027
34,621 40,074 
Term loan, fixed rate at 1.80%, due December 2028
60,641 67,003 
Term loan, fixed rate at 2.05%, due December 2029
80,803 87,295 
Term loan, fixed rate at 2.42%, due December 2030
89,182 95,080 
1,424,502 1,456,171 
Less: Unamortized discount and deferred debt costs, net(10,308)(10,925)
Less: Short-term borrowings and current portion of long-term debt(157,038)(162,430)
Long-term debt$1,257,156 $1,282,816 
(1)In May 2025, we entered into a $1.0 billion senior secured revolving credit facility (the “2025 Revolving Credit Facility”) guaranteed by Amkor Technology Singapore Holding Pte. Ltd. (“ATSH”) and Guardian Assets, Inc. (“Guardian”). The maximum borrowing capacity under the 2025 Revolving Credit Facility is $1.0 billion. The 2025 Revolving Credit Facility includes an uncommitted optional accordion of up to $200.0 million, which may be incurred in the form of revolving commitment increases or term loans. As of March 31, 2026, $1.0 billion was available for future borrowings under the 2025 Revolving Credit Facility.
(2)In May 2024, we entered into a ₩80.0 billion (approximately $59 million) term loan agreement with the option to borrow and re-borrow the funds up to six times per year through May 2027. Principal is payable at maturity, and interest is payable monthly at a fixed rate of 3.95%. As of March 31, 2026, ₩80.0 billion, or approximately $53 million, was available to be drawn.
(3)We entered into various short-term term loans which mature semiannually. Principal and interest are payable in monthly installments. As of March 31, 2026, $3.2 million was available to be drawn.
Certain of our debt is collateralized by the land, buildings, equipment and capital stock of subsidiaries. As of March 31, 2026, the collateralized debt balance was $924.5 million, of which $625.6 million of assets and subsidiary capital stock were pledged as collateral.
The debt of Amkor Technology, Inc. is structurally subordinated in right of payment to all existing and future debt and other liabilities of our subsidiaries. From time to time, Amkor Technology, Inc., ATSH and Guardian guarantee certain indebtedness. The agreements governing our indebtedness contain affirmative and negative covenants, including, among others, covenants to maintain a minimum interest coverage ratio and a maximum consolidated leverage ratio, which restrict our ability to pay dividends and could restrict our operations. These restrictions do not currently have a material impact on our ability to make dividend payments or stock repurchases.
We were in compliance with all debt covenants at March 31, 2026.