X0306 4 2019-03-11 0 0001325702 MAGNACHIP SEMICONDUCTOR Corp MX 0001602251 Kim Jonathan W 60 SOUTH MARKET STREET, SUITE 750 SAN JOSE CA 95113 0 1 0 0 See Remarks Common Stock 2019-03-11 4 F 0 2479 7.52 D 60196 D This transaction represents the withholding by the Issuer of 2,479 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 6,075 shares of common stock originally awarded to the Reporting Person on March 11, 2016. Chief Financial Officer, Executive Vice President and Chief Accounting Officer /s/ Theodore Kim, Attorney-in-Fact 2019-03-12