X0306 4 2018-10-31 1 0001047127 AMKOR TECHNOLOGY, INC. AMKR 0001158839 KIM JAMES J 2045 EAST INNOVATION CIRCLE TEMPE AZ 85284 1 0 1 1 See Exhibit 99.1 Common Stock 2018-10-31 4 J 0 4085000 7.19 A 54621203 D Common Stock 14489497 I By self as trustee On October 31, 2018, 4,085,000 shares of the Issuer's Common Stock were transferred from Turquoise Investments Ltd., a Cayman Islands corporation, to James J. Kim. All of the stock of Turquoise Investments Ltd. is owned by Swallow Ltd., a Cayman Islands corporation. All of the stock of Swallow Ltd. is owned by an irrevocable trust created May 10, 1994 of which James J. Kim is the sole beneficiary. The trust was funded by the father of James J. Kim. Turquoise Investments Ltd. and Swallow Ltd. are being dissolved and the trust is being terminated. Includes 49,594,980 shares held by 915 Investments, LP, in which the reporting person is the general partner. The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's 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 the reporting person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ James J. Kim*** 2018-11-02