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

Reporting relationship: Member of 10% owner group (5)
Issuer ticker: AMKR
Reported as of: 01 Aug 2025
Net transaction value: +$9,648,720
SEC form: 4
Accepted by SEC: 05 Aug 2025, 19:27:48 UTC
Prior SEC filing: 26 Feb 2025
Source filing: View source filing
Reporting owner signature: /s/ Kenneth R. Hillier, as Attorney in Fact

Key filing fact

David D. Kim filed Form 4 for AMKOR TECHNOLOGY, INC. (AMKR) on 05 Aug 2025.

Key facts

This page summarizes David D. Kim's Form 4 filing for AMKOR TECHNOLOGY, INC. (AMKR).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 05 Aug 2025, 19:27.

Change

Previous filing in this sequence was filed on 26 Feb 2025.
Current net transaction value: +$9,648,720.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001158924 Primary reporting owner

KIM DAVID D

Relationship: Member of 10% owner group (5)
Address: C/O FOLGER LEVIN LLP, 33 NEW MONTGOMERY STREET, 19TH FLOOR, SAN FRANCISCO
Signature: /s/ Kenneth R. Hillier, as Attorney in Fact
Signature date: 05 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AMKR transaction

Common Stock

Purchase

Transaction value: $9,648,720
Shares: +441,589
Change %: +13%
Price: $21.85
Shares after: 3,789,479
Date: 01 Aug 2025
Ownership: By Sujoda Investments, LP
Footnotes: F1, F2, F3

AMKR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 8,746
Date: 01 Aug 2025
Ownership: Direct

AMKR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,698,513
Date: 01 Aug 2025
Ownership: By trusts
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

On August 1, 2025, James J. Kim 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.

Footnote F2

The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and, pursuant to the Form 4 instructions, the Reporting Person has elected to treat all of the shares of the Issuer's Common Stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person.

Footnote F3

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.

Footnote F4

The Reporting Person is a trustee of family trusts for the benefit of his immediate family members which own 2,698,513 shares of the Issuer's Common Stock.

SEC remarks

(5) 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.