Form 4 Filing for Mark N. Rogers

This filing details transactions made by Mark N. Rogers, EVP & General Counsel of AMKOR TECHNOLOGY, INC. (AMKR). On April 16, 2026, Rogers acquired 5,000 shares of Common Stock at a price of $7.40 per share, increasing his post-transaction holdings to 43,904 shares. Concurrently, he disposed of 5,000 shares of Common Stock at $59.43 per share, resulting in 38,904 shares remaining. Additionally, Rogers exercised an employee stock option to acquire 5,000 shares of Common Stock at a price of $0.0, with a post-transaction balance of 90,000 shares. The sale was conducted under a Rule 10b5-1 trading plan. The stock option, originally for 200,000 shares, was granted on June 10, 2019, and vested over four years.