X0306 4 2021-01-16 0 0001325702 MAGNACHIP SEMICONDUCTOR Corp MX 0001805443 Park Shin Young C/O MAGNACHIP SEMICONDUCTOR, LTD. 501, TEHERAN-RO, GANGNAM-GU SEOUL, REPUBLIC OF KOREA M5 06168 KOREA, REPUBLIC OF 0 1 0 0 See Remarks Common Stock 2021-01-16 4 F 0 158 18.18 D 25723 D This transaction represents the withholding by the Issuer of 158 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 500 shares of common stock originally awarded to the Reporting Person on January 16, 2019. Chief Accounting Officer and Principal Accounting Officer /s/ Theodore Kim, Attorney-in-Fact 2021-01-19