Amkor Technology Enters Material Agreement

TL;DR

Amkor Tech signed a big deal, expect new financial obligations.

AI Summary

On September 22, 2025, Amkor Technology, Inc. entered into a material definitive agreement. This filing also indicates the creation of a direct financial obligation or an obligation under an off-balance sheet arrangement for the registrant. The filing includes other events and financial statements and exhibits.

Why It Matters

This filing signals a significant new contractual commitment for Amkor Technology, potentially impacting its financial obligations and future operations.

Risk Assessment

Risk Level: medium — Entering into material definitive agreements and creating new financial obligations can introduce financial and operational risks.

Key Players & Entities

• AMKOR TECHNOLOGY, INC. (company) — Registrant
• September 22, 2025 (date) — Date of earliest event reported

FAQ

Key Financial Figures

• $0.001 — ange on Which Registered Common Stock, $0.001 par value AMKR The NASDAQ Global Select
• $500,000,000 — ware corporation (the "Company") issued $500,000,000 aggregate principal amount of its 5.875
• $100,000,000 — aggregate principal amount of at least $100,000,000, if such default is caused by a failure
• $400,000,000 — sued a notice for the redemption of all $400,000,000 aggregate principal amount of its outst
• $1,000 — principal amount of the 2027 Notes, or $1,000 per $1,000 principal amount thereof, pa

Filing Documents

• amkr-20250922.htm (8-K) — 46KB
• amkrseptember2025ex41closi.htm (EX-4.1) — 775KB
• amkrseptember2025ex991clos.htm (EX-99.1) — 11KB
• image_0.jpg (GRAPHIC) — 6KB
• 0001047127-25-000184.txt ( ) — 1115KB
• amkr-20250922.xsd (EX-101.SCH) — 2KB
• amkr-20250922_lab.xml (EX-101.LAB) — 21KB
• amkr-20250922_pre.xml (EX-101.PRE) — 12KB
• amkr-20250922_htm.xml (XML) — 3KB

01. Entry into a Material Definitive Agreement

Item 1.01. Entry into a Material Definitive Agreement. On September 22, 2025, Amkor Technology, Inc., a Delaware corporation (the "Company") issued $500,000,000 aggregate principal amount of its 5.875% Senior Notes due 2033 (the "2033 Notes"), pursuant to an Indenture (the "Indenture") between the Company and U.S. Bank Trust Company, National Association, as trustee, relating to the issuance of the 2033 Notes. U.S. Bank Trust Company, National Association, the trustee under the Indenture, also serves as trustee under the indenture governing the Company's 6.625% Senior Notes due 2027 (the "2027 Notes"). The terms and conditions of the Indenture and the 2033 Notes described in Item 2.03 hereof are incorporated by reference into this Item 1.01. Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth in Item 1.01 hereof is incorporated by reference into this Item 2.03. On September 22, 2025, the Company entered into the Indenture relating to the issuance by the Company of $500,000,000 aggregate principal amount of the 2033 Notes. The material terms and conditions of the Indenture and the 2033 Notes are as follows: Maturity . The 2033 Notes mature on October 1, 2033, subject to earlier redemption or repurchase. Interest . The 2033 Notes accrue interest at a rate of 5.875% per year. Interest on the 2033 Notes is paid semi-annually in arrears on April 1 and October 1, beginning on April 1, 2026. Ranking . The 2033 Notes are the senior unsecured obligations of the Company. Guarantees . Guardian Assets, Inc. initially guarantees the 2033 Notes, and each of the Company's direct and indirect wholly-owned domestic subsidiaries that guarantees the Company's U.S. senior secured credit facility will be required to guarantee the 2033 Notes. Optional Redemption . The Company may redeem some or all of the 2033 Notes at any time prior to October 1, 2028, at a price equ

01. Other Events

Item 8.01. Other Events. The Company today announced that it has issued a notice for the redemption of all $400,000,000 aggregate principal amount of its outstanding 2027 Notes, with the redemption to be effective on October 9, 2025. As provided in the indenture governing the 2027 Notes, the redemption price will be 100% of the principal amount of the 2027 Notes, or $1,000 per $1,000 principal amount thereof, paid in cash. In addition, the Company will pay accrued and unpaid interest on the 2027 Notes to, but excluding, the redemption date, in accordance with the terms of the indenture. The Company plans to fund the redemption of the 2027 Notes with the proceeds from its issuance of the 2033 Notes. On September 22, 2025, the Company issued a press release announcing the cl osing of its offering of the 2033 Notes and the notice of redemption of the 2027 Notes. A copy of this press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

01. Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits. (d) Exhibits. Exhibit Description 4.1 Indenture, dated September 22, 2025, by and between Amkor Technology, Inc. and U.S. Bank Trust Company, National Association, as trustee. 4.2 Form of Note for Amkor Technology, Inc.'s 5.875% Senior Notes due 2033 (incorporated by reference to Exhibit 4.1 hereof). 99.1 P ress release, dated September 22 , 2025 , announcing closing of Amkor Technology, Inc.'s 5.875 % Senior Notes due 2033 and notice of redemption of its 6.625 % Senior Notes due 2027. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. AMKOR TECHNOLOGY, INC. By: /s/ Mark N. Rogers Mark N. Rogers Executive Vice President, General Counsel, and Corporate Secretary Date: September 22, 2025

View Full Filing

View this 8-K filing on SEC EDGAR