• Amkor: Director Douglas A. Alexander sold 5,000 common shares on Oct. 2, 2026 at USD 55.
• Transaction followed the exercise of 5,000 director stock options at USD 8.51 on the same day.
• Directly held common shares totaled 29,109 after the sale.
• Director stock options held totaled 9,657 after the exercise.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Amkor Technology Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001628280-26-065246), on October 06, 2026, and is solely responsible for the information contained therein.