2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 - 01 Aug 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Member of 10% owner group (3)
Signature
/s/ Brian D. Short, Attorney-in-Fact
Issuer symbol
AMKR
Transactions as of
01 Aug 2025
Net transactions value
$0
Form type
4
Filing time
05 Aug 2025, 19:18:02 UTC
Previous filing
01 Aug 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 Member of 10% owner group (3) C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI /s/ Brian D. Short, Attorney-in-Fact 05 Aug 2025 0001977033

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Gift $0 -438,002 -50% $0.000000 438,002 01 Aug 2025 Direct F1
transaction AMKR Common Stock Gift $0 -438,002 -100% $0.000000 0 01 Aug 2025 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

2023 Grantor Retained Annuity Trust of James J. Kim Dated 4/26/2023 is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 On August 1, 2025, the Reporting Person distributed 438,002 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Susan Y. Kim. Susan Y. Kim is the sole trustee of the Reporting Person.
F2 On August 1, 2025, the Reporting Person distributed 438,002 shares of the Common Stock of the Issuer to John T. Kim. Susan Y. Kim is the sole trustee of the Reporting Person.

Remarks:

(3) 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, or for any other purpose.