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Insider Trading Arrangements
 3 Months Ended
Sep. 30, 2025
shares
Trading Arrangements, by Individual  
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
Mark N. Rogers [Member]  
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
On August 1, 2025, Mark N. Rogers, Amkor’s Executive Vice President, General Counsel and Corporate Secretary, adopted a “Rule 10b5-1 trading arrangement” as such term is defined in paragraph (a) of Item 408 of Regulation S-K promulgated under the Securities Act, which is intended to satisfy the affirmative defense of Rule 10b5-1(c). Mr. Rogers’ Rule 10b5-1 trading arrangement will terminate on the earliest of: (a) August 31, 2026; (b) the first date on which all trades have been executed or all trading orders relating to such trades have expired; and (c) the date on which Mr. Rogers gives notice to terminate his Rule 10b5-1 trading arrangement. 80,000 shares of our common stock are to be sold under Mr. Rogers’ Rule 10b5-1 trading arrangement.
Name Mark N. Rogers
Title Executive Vice President, General Counsel and Corporate Secretary
Rule 10b5-1 Arrangement Adopted true
Adoption Date August 1, 2025
Expiration Date August 31, 2026
Arrangement Duration 395 days
Aggregate Available 80,000