Form 4 Filing for Amkor Technology, Inc. - Insider Transaction

This Form 4 filing reports a transaction by Guillaume Marie Jean Rutten, a director at Amkor Technology, Inc. (AMKR). On June 23, 2026, Rutten acquired 2.5166 Restricted Stock Units (RSUs). These RSUs represent dividend equivalent units (DEUs) accrued upon a dividend payment on the same date, with respect to previously granted time-vested RSUs. Each DEU is subject to the same provisions as the original RSU. The acquisition was made at a price of $0.0 per share. Following this transaction, Rutten now owns 2615.5166 shares of common stock underlying these RSUs. The transaction was reported on June 25, 2026.