Form 4 Filing for AMKOR TECHNOLOGY, INC.

This filing details transactions by James J. Kim, a 10% owner of AMKOR TECHNOLOGY, INC. (AMKR). On July 20, 2026, Mr. Kim acquired 200,000 shares of Common Stock at $9.86 per share and 250,000 shares at $9.48 per share. Concurrently, he disposed of employee stock options for 200,000 shares (granted Feb 27, 2017) and 250,000 shares (granted Feb 15, 2019), both with an exercise price of $0.00. The filing also reports various indirect holdings of Common Stock through family trusts, totaling over 10.5 million shares. Mr. Kim disclaims beneficial ownership beyond his pecuniary interest. The transactions were reported on Form 4.