# EDGAR Filing Document

**Accession Number:** 0001325702
**File Stem:** 0001193125-26-012251
**Filing Date:** 2026-1
**Character Count:** 8222
**Document Hash:** f99ac5c35017b28ac5b80b6ebf392e60
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-012251.hdr.sgml**: 20260114

**ACCESSION NUMBER**: 0001193125-26-012251

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260113

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260114

**DATE AS OF CHANGE**: 20260114

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MAGNACHIP SEMICONDUCTOR Corp
- **CENTRAL INDEX KEY:** 0001325702
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 830406195
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34791
- **FILM NUMBER:** 26531422

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** C/O MAGNACHIP SEMICONDUCTOR, LTD.
- **STREET 2:** 15F, 76 JIKJI-DAERO, 436BEON-GIL
- **CITY:** CHEONGJU-SI
- **PROVINCE COUNTRY:** M5
- **BUSINESS PHONE:** 82-2-6903-3000

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** C/O MAGNACHIP SEMICONDUCTOR, LTD.
- **STREET 2:** 15F, 76 JIKJI-DAERO, 436BEON-GIL
- **CITY:** CHEONGJU-SI
- **PROVINCE COUNTRY:** M5

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MAGNACHIP SEMICONDUCTOR LLC
- **DATE OF NAME CHANGE:** 20110304

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MAGNACHIP SEMICONDUCTOR Corp
- **DATE OF NAME CHANGE:** 20110303

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MAGNACHIP SEMICONDUCTOR LLC
- **DATE OF NAME CHANGE:** 20100701

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 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): January 13, 2026

## Magnachip Semiconductor Corporation

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-34791** | **83-0406195** |
| **(State or other jurisdiction**<br>**of incorporation)** | **(Commission**<br>**File Number)** | **(IRS Employer**<br>**Identification No.)** |

---

#### c/o Magnachip Semiconductor, Ltd.

#### 15F, 76 Jikji-daero 436beon-gil, Heungdeok-gu

#### Cheongju-si, Chungcheongbuk-do, 28581, Republic of Korea

#### (Address of principal executive offices)

#### Not Applicable

#### (Zip Code)

#### +82 (2) 6903-3000

#### (Registrant's telephone number, including area code)

#### Not Applicable

#### (Former name or former address, if changed since last report)
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<br>Symbol(s)** | **Name of each exchange**<br>**on which registered** |
| Common Stock, par value $0.01 per share | MX | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company 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. ☐

------

#### Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On January 13, 2026, Ilbok Lee notified Magnachip Semiconductor Corporation (the "Company") that he had decided to retire and resign from the Board of Directors (the "Board") of the Company, including all committee positions on which he serves, to be effective at the Company's next scheduled meeting of the Board to be held on January 14, 2026. Dr. Lee's decision to retire was for personal reasons and not the result of any disagreement with the Company on any matter relating to the Company's operations, policies or practices.

#### Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.

---

| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 99.1 | [Press Release issued January 14, 2026.](d25690dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

---

------

#### 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.

---

| | | |
|:---|:---|:---|
| Date: January 14, 2026 | **MAGNACHIP SEMICONDUCTOR CORPORATION** | **MAGNACHIP SEMICONDUCTOR CORPORATION** |
|  | By: | /s/ Shin Young Park |
|  | Name: | Shin Young Park |
|  | Title: | Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g25690page4.jpg)

**Magnachip Announces the Retirement of Director Ilbok Lee** 

**SEOUL, South Korea, Jan. 14, 2026** – Magnachip Semiconductor Corporation (NYSE: MX) ("Magnachip" or the "Company") today announced that Ilbok Lee has notified the Company of his intention to retire from the Company's Board of Directors, to be effective at the Company's next scheduled Board meeting to be held on January 14, 2026.

Dr. Lee joined Magnachip's Board in August 2011 and has served in multiple capacities for the Board during that time, including as Chair of the Nominating and Corporate Governance Committee, and as a member of the Board's Audit, Risk and Strategic Review Committees. During his tenure, Dr. Lee provided critical insight across a broad range of strategic, operational, and governance matters, and has been widely respected for his deep technical insight, thoughtful judgment, and unwavering commitment to the Company, its employees, and its values.

"Over more than fourteen years of service, Dr. Lee has made a lasting and meaningful contribution to our Company and our Board," said Camillo Martino, Magnachip's Chairman of the Board. "He consistently brought clarity, perspective, and experience to our discussions, while always approaching the role with humility and integrity. His guidance has been invaluable to both management and the Board, and his impact on the Company will be felt for many years to come. We extend our sincere thanks and deep respect for his many years of service and lasting contribution."

Dr. Lee's departure is due to personal reasons and is not the result of any disagreement with the Company on any matter relating to the Company's operations, policies or practices.

**About Magnachip Semiconductor** 

Magnachip is a designer and manufacturer of analog and mixed-signal power semiconductor platform solutions for various applications, including industrial, automotive, communication, consumer and computing. The Company provides a broad range of standard products to customers worldwide. Magnachip, with about 45 years of operating history, owns a portfolio of approximately 1,000 registered patents and pending applications, and has extensive engineering, design and manufacturing process expertise. For more information, please visit www.magnachip.com. Information on or accessible through Magnachip's website is not a part of, and is not incorporated into, this release.

**CONTACT:** 

Mike Bishop

Bishop IR, LLC

Tel. +1 (415) 891-9633

mike@bishopir.com