X0306 4 2016-11-08 0 0001047127 AMKOR TECHNOLOGY, INC. AMKR 0001596796 Rutten Guillaume Marie Jean 2045 EAST INNOVATION CIRCLE TEMPE AZ 85284 0 1 0 0 Executive Vice President Common Stock 2016-11-08 4 M 0 15000 5.18 A 15000 D Common Stock 2016-11-08 4 S 0 15000 11.02 D 0 D Common Stock 2016-11-08 4 M 0 15000 5.18 A 15000 D Common Stock 2016-11-08 4 S 0 15000 11.29 D 0 D Employee Stock Option (right to Buy) 5.18 2016-11-08 4 M 0 15000 0.00 D 2015-02-13 2024-02-13 Amkor Technology, Inc. 15000 70000 D Employee Stock Option (Right to Buy) 5.18 2016-11-08 4 M 0 15000 0.00 D 2015-02-13 2024-02-13 Amkor Technology, Inc. 15000 55000 D The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 11.00 to 11.06. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 11.28to 11.29. The stock options will vest over four years; 25% on the first anniversary of the grant date and 1/16 of the option will vest each quarter thereafter so that at the end of the fourth year, 100% of the option will be vested. Jerry C. Allison, Attorney-in-Fact for Guillaume Marie Jean Rutten 2016-11-10