Roger A. Carolin - 23 Jun 2026 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Reporting relationship: Director
Issuer ticker: AMKR
Reported as of: 23 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 25 Jun 2026, 16:37:35 UTC
Prior SEC filing: 15 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin

Key filing fact

Roger A. Carolin filed Form 4 for AMKOR TECHNOLOGY, INC. (AMKR) on 25 Jun 2026.

Key facts

This page summarizes Roger A. Carolin's Form 4 filing for AMKOR TECHNOLOGY, INC. (AMKR).
3 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 25 Jun 2026, 16:37.

Change

Previous filing in this sequence was filed on 15 May 2026.
Current net transaction value: $0.

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 0001351909 Primary reporting owner

Carolin Roger Anthony

Relationship: Director
Address: 7 GREAT VALLEY PARKWAY,, SUITE 190, MALVERN
Signature: /s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin
Signature date: 25 Jun 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AMKR transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +8
Change %: +0.09%
Price: $0.000000^*
Shares after: 8,904
Date: 23 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 8
Exercise price
Footnotes: F1

AMKR transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +9
Change %: +0.1%
Price: $0.000000^*
Shares after: 9,902
Date: 23 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9
Exercise price
Footnotes: F2

AMKR transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +3
Change %: +0.1%
Price: $0.000000^*
Shares after: 2,616
Date: 23 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3
Exercise price
Footnotes: F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

Footnote F2

Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

Footnote F3

Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer granted to the Reporting Person on May 13, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.