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Insider Trading Arrangements
 3 Months Ended 12 Months Ended
Dec. 31, 2023
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Dec. 31, 2023
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Trading Arrangements, by Individual    
Non-Rule 10b5-1 Arrangement Adopted false  
Rule 10b5-1 Arrangement Terminated false  
Non-Rule 10b5-1 Arrangement Terminated false  
Giel Rutten [Member]    
Trading Arrangements, by Individual    
Material Terms of Trading Arrangement  
On November 8, 2023, Giel Rutten, Amkor’s President and Chief Executive Officer, 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. Rutten’s Rule 10b5-1 trading arrangement will terminate on the earliest of: (a) August 30, 2024; (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. Rutten gives notice to terminate his Rule 10b5-1 trading arrangement. 175,000 shares of our common stock are to be sold under Mr. Rutten’s Rule 10b5-1 trading arrangement.
Name Giel Rutten  
Title President and Chief Executive Officer  
Rule 10b5-1 Arrangement Adopted true  
Adoption Date November 8, 2023  
Arrangement Duration 296 days  
Aggregate Available 175,000 175,000