AMKOR TECHNOLOGY, INC. — Director's Dealing 2021

Nov 16, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2021-11-15

Reporting Person: Rutten Guillaume Marie Jean (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-11-15	Common Stock	M	10000	$14.17	Acquired	360000	Direct
2021-11-15	Common Stock	S	25000	$23.35	Disposed	335000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-11-15	Employee Stock Option (Right-to-Buy)	$14.17	M	10000	Disposed	2030-07-30	Common Stock (10000)	Direct

Footnotes

F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 13, 2021.

F2: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $23.12 to $23.54.The Reporting Person hereby undertakes to provide, upon request, to the staff of the Securities and Exchange Commission, Amkor Technology, Inc. (the "Issuer"), or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.

F3: This stock option (the "Option") to acquire 375,000 shares of the Issuer's common stock was granted on July 30, 2020 (the "Grant Date") and will vest in equal quarterly installments over three years, such that 100% of the Option will be vested on the third anniversary of the Grant Date.