X0306 4 2018-05-02 0 0001325702 MAGNACHIP SEMICONDUCTOR Corp MX 0001488028 Klein Randal T 60 SOUTH MARKET STREET, SUITE 750 SAN JOSE CA 95113 1 0 0 0 Common Stock 2018-05-02 4 P 0 5000 10.785 A 10030 D The price reported in Column 4 is a weighted average price. These shares were bought in multiple transaction at prices ranging from 10.775 to 10.80 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought at each separate price within the range set forth in this footnote. /s/ Theodore Kim, Attorney-in-Fact 2018-05-03