Susan Y. Kim - May 18, 2021 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role: Director, Exhibit 99.1, 10%+ Owner
Signature: Mark N. Rogers, Attorney-in-Fact for Susan Y. Kim
Stock symbol: AMKR
Transactions as of: May 18, 2021
Transactions value $: $0
Form type: 4
Date filed: 5/19/2021, 05:20 PM
Next filing: Apr 21, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMKR	Common Stock	Award	$0	+3.09K	+0.07%	$0.00	4.52M	May 18, 2021	Direct	F1
holding	AMKR	Common Stock						32.3M	May 18, 2021	Held by Self as Trustee	F2
holding	AMKR	Common Stock						25.7M	May 18, 2021	Held by Self Through Partnerships	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMKR	Director Stock Option (Right to Buy)	Award	$0	+20K		$0.00	20K	May 18, 2021	Amkor Technology Inc. Common Stock	20K	$19.39	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These are restricted shares which vest 100% on the earlier of the first anniversary of the grant date, or the date of the first annual meeting of stockholders following the grant date.
F2	The reporting person disclaims beneficial ownership of these securities, except to the extent of the reporting person's pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities, except to the extent of the reporting person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
F3	These options vest 100% on the earlier of the first anniversary of the grant date or the date of the first annual meeting of stockholders following the grant date.