James J. Kim - 01 Aug 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Member of 10% owner group (4), 10%+ Owner
Signature
/s/ Brian D. Short, Attorney-in-Fact for James J. Kim
Issuer symbol
AMKR
Transactions as of
01 Aug 2025
Net transactions value
-$9,648,720
Form type
4
Filing time
05 Aug 2025, 19:32:13 UTC
Previous filing
01 Aug 2025
Next filing
24 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
KIM JAMES J Member of 10% owner group (4), 10%+ Owner C/O SIANA CARR O'CONNOR & LYNAM, 1500 EAST LANCASTER AVENUE, PAOLI /s/ Brian D. Short, Attorney-in-Fact for James J. Kim 05 Aug 2025 0001158839

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Sale $9,648,720 -441,589 -16% $21.85 2,341,239 01 Aug 2025 Direct F1
holding AMKR Common Stock 7,828,682 01 Aug 2025 By John T. Kim Family Trust U/A dtd. 12/11/12 F2, F3
holding AMKR Common Stock 1,957,350 01 Aug 2025 By John T. Kim G-S Trust dtd. 12/11/12 F2, F3
holding AMKR Common Stock 1,833,000 01 Aug 2025 By Spouse F2, F3
holding AMKR Common Stock 164,678 01 Aug 2025 By self as Trustee of Trust U/A dtd. 12/11/12 F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On August 1, 2025, the Reporting Person distributed 441,589 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to Sujoda Investments, LP pursuant to the terms of a transaction between members of the Kim family group.
F2 The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or for any other purpose.
F3 The Reporting Person is (i) a trustee of trusts for the benefit of his immediate family members which own 9,786,032 shares of the Issuer's Common Stock and (ii) a trustee of a trust which is a controlling member of a limited liability company being treated as a corporation for purposes of Section 16, which limited liability company holds 164,678 shares of the Issuer's Common stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.

Remarks:

(4) 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.