AMKOR TECHNOLOGY, INC. — Director's Dealing 2021

May 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2021-05-20

Reporting Person: Faust Megan (CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-20	Common Stock	M	5000	$8.88	Acquired	19844	Direct
2021-05-20	Common Stock	S	5000	$19.817	Disposed	14844	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-20	Employee Stock Option (Right-to-Buy)	$8.88	M	5000	Disposed	2026-09-12	Common Stock (5000)	Direct

Footnotes

F1: The sale reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 11, 2021.

F2: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $19.734 to $19.94.

F3: This stock option was granted on September 12, 2016 and will vest over four years as follows: 25% on the first anniversary of the grant date and 1/16 of the option will vest each quarter thereafter so that at the end of the fourth year, 100% of the option will be vested.