X0206 3 2021-09-20 0 0001047127 AMKOR TECHNOLOGY, INC. AMKR 0001901848 Blaney Liam E C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE PAOLI PA 19301 0 0 0 1 Member of 10% owner group (4) Common Stock 0 D Common Stock 0 D Common Stock 0 D On September 20, 2021, the Susan Y. Kim Irrevocable Trust Dated 4/16/98 fbo Alexandra Kim Panichello transferred 2,733,333 shares of the Issuer's Common stock to Alexandra Investments, LLC ("LLC1") in exchange for 100% of LLC1's membership units. The reporting person is one of the two managers of LLC1. LLC1 is being viewed as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. The reporting person has no pecuniary interest in the shares held by LLC1. On September 20, 2021, the Susan Y. Kim Irrevocable Trust Dated 4/16/98 fbo Jacqueline Mary Panichello transferred 2,733,333 shares of the Issuer's Common stock to Jacqueline Investments, LLC ("LLC2") in exchange for 100% of LLC2's membership units. The reporting person is one of the two managers of LLC2. LLC2 is being viewed as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. The reporting person has no pecuniary interest in the shares held by LLC2. On September 20, 2021, the Susan Y. Kim Irrevocable Trust Dated 4/16/98 fbo Dylan James Panichello transferred 2,733,334 shares of the Issuer's Common stock to Dylan Investments, LLC ("LLC3") in exchange for 100% of LLC3's membership units. The reporting person is one of the two managers of LLC3. LLC3 is being viewed as a limited partnership for purposes of Section 16 of the Securities Exchange Act of 1934, as amended. The reporting person has no pecuniary interest in the shares held by LLC3. (4) The reporting person states that the filing of this Form 3 shall not be deemed an admission that the reporting person is the beneficial owner of the reported securities owned by the other members of the group, for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. Exhibit List Exhibit 24 -Limited Power of Attorney /s/ Richard D. Rosen, Attorney-in-Fact 2021-12-30