# EDGAR Filing Document

**Accession Number:** 0001047127
**File Stem:** 0001047127-25-000175
**Filing Date:** 2025-9
**Character Count:** 9753
**Document Hash:** aca5fad5572339061fa15afac8fdb615
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001047127-25-000175.hdr.sgml**: 20250908

**ACCESSION NUMBER**: 0001047127-25-000175

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20250908

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250908

**DATE AS OF CHANGE**: 20250908

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMKOR TECHNOLOGY, INC.
- **CENTRAL INDEX KEY:** 0001047127
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 231722724
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-29472
- **FILM NUMBER:** 251298740

**BUSINESS ADDRESS:**
- **STREET 1:** 2045 EAST INNOVATION CIRCLE
- **CITY:** TEMPE
- **STATE:** AZ
- **ZIP:** 85284
- **BUSINESS PHONE:** 480-821-5000

**MAIL ADDRESS:**
- **STREET 1:** 2045 EAST INNOVATION CIRCLE
- **CITY:** TEMPE
- **STATE:** AZ
- **ZIP:** 85284

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMKOR TECHNOLOGY INC
- **DATE OF NAME CHANGE:** 19971001

?xml version='1.0' encoding='ASCII'? amkr-20250908

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, DC 20549**

**FORM 8-K** 

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the**

**Securities Exchange Act of 1934**

**Date of Report (Date of earliest event reported)**

**September 8, 2025** 

**AMKOR TECHNOLOGY, INC.** 

(Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **000-29472** | **23-1722724** |
| (State or Other Jurisdiction of Incorporation) | (Commission File Number) | (IRS Employer Identification No.) |

---

**2045 EAST INNOVATION CIRCLE** 

**TEMPE, AZ 85284** 

(Address of principal executive offices, including zip code)

**(480) 821-5000** 

(Registrant's telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| **Title of Each Class** | **Trading Symbol** | **Name of Each Exchange on Which Registered** |
| Common Stock, $0.001 par value | AMKR | The NASDAQ Global Select Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 8.01. Other Events.**

On September 8, 2025, Amkor Technology, Inc. (the "Company") issued a press release announcing its intention to offer $400,000,000 aggregate principal amount of senior notes due 2033 (the "2033 Notes"). The Company also announced its intention to use the proceeds of the offering to redeem in full the $400,000,000 aggregate principal amount outstanding of its 6.625% senior notes due 2027 (the "2027 Notes"). The consummation of the offering of the 2033 Notes will not be conditioned on the 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.

This Current Report on Form 8-K does not constitute a notice of redemption of the 2027 Notes.

**Item 9.01. Financial Statements and Exhibits.**

(d) Exhibits.

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| <u>[99.1](amkrseptember2025ex991laun.htm)</u> | <u>[Press release](amkrseptember2025ex991laun.htm)[, dated](amkrseptember2025ex991laun.htm)[September 8, 2025](amkrseptember2025ex991laun.htm)[, announcing proposed offeri](amkrseptember2025ex991laun.htm)[ng o](amkrseptember2025ex991laun.htm)[f senior notes due 20](amkrseptember2025ex991laun.htm)[3](amkrseptember2025ex991laun.htm)[3 and intention to redeem senior notes due 202](amkrseptember2025ex991laun.htm)[7](amkrseptember2025ex991laun.htm)[.](amkrseptember2025ex991laun.htm)</u> |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

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**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.** | **AMKOR TECHNOLOGY, INC.** |
| By: | /s/ Mark N. Rogers |
|  | Mark N. Rogers |
|  | Executive Vice President, General Counsel, and Corporate Secretary |

---

Date: September 8, 2025

## Exhibit 99.1

![image_0.jpg](image_0.jpg)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Amkor Technology Announces Proposed Offering of Senior Notes due 2033 and Intention to Redeem Senior Notes due 2027**

TEMPE, Ariz -- September 8, 2025 -- Amkor Technology, Inc. (Nasdaq: AMKR) (the "Company") today announced that it intends to offer, subject to market and other conditions, $400 million aggregate principal amount of senior notes due 2033 (the "2033 Notes") in a private placement to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the "Securities Act"), and to certain non-U.S. persons outside the United States pursuant to Regulation S under the Securities Act.

We intend to use all of the net proceeds of the 2033 Notes offering, together with cash on hand, to redeem in full the $400 million aggregate principal amount outstanding of our 6.625% senior notes due 2027 (the "2027 Notes") and to pay related fees and expenses. Pending the use of the proceeds of this offering, we intend to invest the proceeds in cash, cash equivalents, investment grade securities or other short-term marketable securities. The consummation of the offering of the 2033 Notes will not be conditioned on the redemption of the 2027 Notes.

This announcement does not constitute an offer to sell or a solicitation of an offer to buy any of the 2033 Notes, nor shall there be any offer, solicitation or sale in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful. This notice is being issued pursuant to and in accordance with Rule 135c under the Securities Act.

This announcement does not constitute a notice of redemption of the 2027 Notes.

The 2033 Notes have not been registered under the Securities Act or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from such registration requirements.

**About Amkor Technology, Inc.**

Amkor Technology, Inc. (Nasdaq: AMKR) is the world's largest U.S. headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services. With a strong track record of innovation, a broad and diverse geographic footprint and solid partnerships with lead customers, Amkor delivers high-quality solutions that enable the world's leading semiconductor and electronics companies to bring advanced technologies to market. The Company's comprehensive portfolio includes advanced packaging, wafer-level processing, and system-in-package solutions targeting applications for smartphones, data centers, artificial intelligence, automobiles and wearables. For more information visit amkor.com.

**Forward-Looking Statement Disclaimer**

This announcement contains forward-looking statements within the meaning of federal securities laws. All statements other than statements of historical fact are considered forward-looking statements including, without limitation, statements regarding the proposed 2033 Notes offering and the terms and expected use of proceeds thereof. These forward-looking statements involve a number of risks, uncertainties, assumptions and other factors that could affect future results and cause actual results and events to differ materially from historical and expected results and those expressed or implied in the forward-looking statements, including, but not limited to, that there can be no assurance that (i) the 2033 Notes will be sold in the amount or on the terms expected or at all or (ii) the 2027 Notes will be redeemed in full or at all. Other important risk factors that could affect the outcome of the events set forth in these statements

<br> <br> <br>

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are discussed in the Company's Annual Report on Form 10-K for the year ended December 31, 2024, and in its subsequent filings with the Securities and Exchange Commission made prior to or after the date hereof.

The Company undertakes no obligation to review or update any forward-looking statements to reflect events or circumstances occurring after the date of this announcement.

**Contact**

**Investor Relations**

Jennifer Jue

Vice President, Investor Relations and Finance

480-786-7594

jennifer.jue@amkor.com

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