John T. Kim 2024 GRAT #1 dtd. 08/09/2024 - Nov 4, 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Member of 10% owner group
Signature
/s/ Brian D. Short, Attorney-in-Fact
Stock symbol
AMKR
Transactions as of
Nov 4, 2025
Transactions value $
$0
Form type
4
Date filed
11/6/2025, 06:27 PM
Previous filing
Aug 16, 2024
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
John T. Kim 2024 GRAT #1 dtd. 08/09/2024 Member of 10% owner group C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI /s/ Brian D. Short, Attorney-in-Fact 2025-11-06 0002034170

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Gift $0 -806K -40.3% $0.00 1.19M Nov 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 November 4, 2025, the Reporting Person distributed 806,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to John T. Kim. John T. Kim is the sole trustee of the Reporting Person. Because John. T. Kim is the annuitant and sole trustee of the Reporting Person, the distribution was a mere change in the form of ownership from indirect to direct and thus being voluntarily reported by the Reporting Person on this Form 4.

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, or for any other purpose.