Form 4 Filing for MaryFrances McCourt

This filing details transactions by MaryFrances McCourt, a director at AMKOR TECHNOLOGY, INC. On September 22, 2026, McCourt acquired 12.9709 and 3.9978 Restricted Stock Units (RSUs) as dividend equivalent units (DEUs) related to prior RSU grants. These DEUs are subject to the same terms as the original RSUs. The transactions, coded as