Mark N. Rogers - 24 Feb 2026 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Reporting relationship: EVP & General Counsel
Issuer ticker: AMKR
Reported as of: 24 Feb 2026
Net transaction value: -$39,115
SEC form: 4
Accepted by SEC: 26 Feb 2026, 16:10:50 UTC
Prior SEC filing: 24 Feb 2026
Next SEC filing: 18 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark N. Rogers

Key filing fact

Mark N. Rogers filed Form 4 for AMKOR TECHNOLOGY, INC. (AMKR) on 26 Feb 2026.

Key facts

This page summarizes Mark N. Rogers's Form 4 filing for AMKOR TECHNOLOGY, INC. (AMKR).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 26 Feb 2026, 16:10.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: -$39,115.

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 0001201997 Primary reporting owner

ROGERS MARK N

Relationship: EVP & General Counsel
Address: 2045 EAST INNOVATION CIRCLE, TEMPE
Signature: /s/ Mark N. Rogers
Signature date: 26 Feb 2026

Reported non-derivative transactions

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

AMKR transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +1,880
Change %: +5%
Price: $0.000000
Shares after: 39,710
Date: 24 Feb 2026
Ownership: Direct

AMKR transaction

Common Stock

Tax liability

Transaction value: $39,115
Shares: -806
Change %: -2%
Price: $48.53
Shares after: 38,904
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

AMKR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -1,880
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 24 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,880
Exercise price: $0.000000
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The transaction represents shares withheld by Amkor Technology, Inc. (the "Issuer") in connection with the vesting of certain restricted stock units ("RSUs") granted to the Reporting Person on February 24, 2022 (the "Grant Date") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the related award agreement. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.

Footnote F2

Represents shares of the Issuer's common stock underlying time-vested RSUs on the Grant Date pursuant to the Issuer's Equity Incentive Plan. The RSUs were awarded for no consideration other than the Reporting Person's service as a service provider of the Issuer and vested in four equal annual installments beginning on the first anniversary of the Grant Date.