X0306 5 2015-12-31 0 0 0 0001047127 AMKOR TECHNOLOGY, INC. AMKR 0001158922 KIM SUSAN Y 2045 EAST INNOVATION CIRCLE TEMPE AZ 85284 1 0 1 1 Exhibit 99.1 Common Stock 2015-05-12 5 G 0 3497613 6.92 D 47875525 D Common Stock 2015-05-12 5 G 0 3497613 6.92 A 47875525 I By self as trustee Common Stock 2015-09-21 5 J 0 888647 4.86 D 47875525 I By self as trustee Common Stock 2015-10-28 5 J 0 1883340 6.36 D 47875525 I By self as trustee Common Stock 2015-10-28 5 J 0 1883340 6.36 A 47875525 D Common Stock 2015-11-06 5 J 0 48535 6.59 D 47875525 I By self as trustee Common Stock 2015-11-06 5 J 0 48535 6.59 A 47875525 D On May 12, 2015, Susan Y. Kim gifted 3,497,613 shares to the Susan Y. Kim 2015 Irrevocable Trust U/A dated March 16, 2015. Susan Y. Kim and John T. Kim are co-trustees. On May 12, 2015, Susan Y. Kim gifted 3,497,613 shares to the Susan Y. Kim 2015 Irrevocable Trust U/A dated March 16, 2015. Susan Y. Kim and John T. Kim are co-trustees. On September 21, 2015, the James J. Kim 2013 Qualified Annuity Trust U/A Dated 5/17/13 distributed 888,647 to James J. Kim. Susan Y. Kim and James J. Kim are co-trustees. On October 28, 2015, Susan Y. Kim 2012 Irrevocable Trust Dated July 26, 2012 distributed 1,883,340 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees. On November 6, 2015, Susan Y. Kim 2012 Irrevocable Trust Dated July 26, 2012 distributed 48,535 shares to Susan Y. Kim. Susan Y. Kim and John T. Kim are co-trustees. The Reporting Person may be deemed to own 47,875,525 shares. Susan owns 1,939,669 shares directly and 5,000 options exercisable within 60 days of December 31, 2015. All remaining shares are indirectly owned through various family trusts and Sujoda Investments, L.P., a limited partnership established for the benefit of members of the James J. Kim family. This total includes those shares indirectly owned that are listed above. The Reporting Person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of her pecuniary interest therein, for purposes of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ Jerry Allison, as Attorney in Fact 2016-02-15