Insider Trading & Ownership of 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023

Location: Paoli, PA
Summary: The estimated value of insider holdings of 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 is at least $23.2M dollars as of December 8, 2025. 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 is the Member of 10% owner group (2) of AMKOR TECHNOLOGY, INC. and owns shares of AMKOR TECHNOLOGY, INC. (AMKR) stock worth about $23.2M.
Signature: /s/ Brian D. Short, Attorney-in-Fact
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Ownership of 2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
AMKR	AMKOR TECHNOLOGY, INC.	Member of 10% owner group (2)	$23.2M			Dec 4, 2025

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.