X0306 4 2022-02-18 0 0001325702 MAGNACHIP SEMICONDUCTOR Corp MX 0001805443 Park Shin Young C/O MAGNACHIP SEMICONDUCTOR, LTD., 501, TEHERAN-RO, GANGNAM-GU SEOUL M5 06168 KOREA, REPUBLIC OF 0 1 0 0 See Remarks Common Stock 2022-02-18 4 A 0 4118 0.00 A 34540 D Common Stock 2022-02-18 4 F 0 1945 18.78 D 32595 D Common Stock 2022-02-18 4 A 0 288 0.00 A 32883 D Common Stock 2022-02-18 4 F 0 136 18.78 D 32747 D This transaction reflects shares of common stock issued in connection with the vesting of financial performance-based restricted stock units granted on February 19, 2021. This represents the withholding by the Issuer of 1,945 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 4,118 shares of common stock issued in connection with the vesting of financial performance-based restricted stock units granted on February 19, 2021. This transaction reflects shares of common stock issued in connection with the vesting of TSR performance-based restricted stock units granted on October 22, 2019. This represents the withholding by the Issuer of 136 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 288 shares of common stock issued in connection with the vesting of TSR performance-based restricted stock units granted on October 22, 2019. Chief Financial Officer /s/ Theodore Kim, Attorney-in-Fact 2022-02-23