2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 - Dec 4, 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Member of 10% owner group (2)
Signature
/s/ Brian D. Short, Attorney-in-Fact
Stock symbol
AMKR
Transactions as of
Dec 4, 2025
Transactions value $
$0
Form type
4
Date filed
12/8/2025, 05:51 PM
Previous filing
Dec 26, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
2023 Grantor Retained Annuity Trust of Susan Y. Kim Dated 9/15/2023 Member of 10% owner group (2) C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI /s/ Brian D. Short, Attorney-in-Fact 2025-12-08 0001994714

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Gift $0 -758K -51.11% $0.00 725K Dec 4, 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On December 4, 2025, the Reporting Person distributed 758,000 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Susan Y. Kim as a gift.

Remarks:

(2) The Reporting Person states that the filing of this Form 4 shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities owned by the other members of the group, for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.