0001325702 2025-05-21 2025-05-21 c/o Magnachip Semiconductor, Ltd. 0001325702 8-K/A true 2025-05-21 Magnachip Semiconductor Corporation DE 001-34791 83-0406195 15F, 76 Jikji-daero 436beon-gil, Heungdeok-gu Cheongju-si Chungcheongbuk-do 28581 KR 82 2 6903-3000 false false false false Common Stock, par value $0.01 per share MX NYSE false On May 23, 2025, Magnachip Semiconductor Corporation (the “Company”) filed a Current Report on Form 8-K (the “Original Form 8-K”) to report that Theodore S. Kim will depart from his employment and executive officer roles with the Company, effective October 22, 2025. This Amendment No.1 on Form 8-K/A is being filed to supplement the disclosure contained in Item 5.02 of the Original Form 8-K, including the date of departure and the provision of the executed Separation Agreement entered into by and among the Company, Magnachip Semiconductor, Ltd. (“MSK”), which is the Company’s Korean operating subsidiary, and Mr. Theodore Kim, and to file the Separation Agreement as Exhibit 10.1 hereto. The remainder of the Original Form 8-K is unchanged.