Cherie Buntyn - 12 Mar 2026 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Reporting relationship: Chief Accounting Officer
Issuer ticker: AMKR
Reported as of: 12 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 16 Mar 2026, 18:37:52 UTC
Prior SEC filing: 16 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark N. Rogers, Attorney-in-Fact for Cherie Buntyn

Key filing fact

Cherie Buntyn filed Form 4 for AMKOR TECHNOLOGY, INC. (AMKR) on 16 Mar 2026.

Key facts

This page summarizes Cherie Buntyn's Form 4 filing for AMKOR TECHNOLOGY, INC. (AMKR).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 16 Mar 2026, 18:37.

Change

Previous filing in this sequence was filed on 16 Mar 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 0001936124 Primary reporting owner

Buntyn Cherie

Relationship: Chief Accounting Officer
Address: 2045 E INNOVATION CIRCLE, TEMPE
Signature: /s/ Mark N. Rogers, Attorney-in-Fact for Cherie Buntyn
Signature date: 16 Mar 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: +799
Change %
Price: $0.000000^*
Shares after: 799
Date: 12 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 799
Exercise price: $0.000000
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Represents shares of Amkor Technology, Inc. (the "Issuer") common stock underlying time-vested restricted stock units (the "RSUs") granted on March 12, 2026 (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 an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date.