Sung Shin - Feb 22, 2023 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role: Executive Vice President
Signature: Mark N. Rogers, Attorney-in-Fact for Sung Shin
Stock symbol: AMKR
Transactions as of: Feb 22, 2023
Transactions value $: $0
Form type: 4
Date filed: 2/24/2023, 07:06 PM
Previous filing: Feb 21, 2023
Next filing: Jun 5, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMKR	Common Stock	Award	$0	+17.8K	+1091.98%	$0.00	19.5K	Feb 22, 2023	Direct	F1
transaction	AMKR	Common Stock	Options Exercise	$0	+941	+4.83%	$0.00	20.4K	Feb 24, 2023	Direct	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	Restricted Stock Units	Options Exercise	$0	-941	-25.02%	$0.00	2.82K	Feb 24, 2023	Common Stock	941	$0.00	Direct	F2

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

Explanation of Responses:

Id	Content
F1	This Form 4 reports the vesting on February 22, 2023 of 17,843 shares of common stock of Amkor Technology, Inc. (the "Issuer") underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 11, 2021 pursuant to the Issuer's Second Amended and Restated 2007 Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic cumulative earnings per share performance goal over a two-year performance period beginning January 1, 2021 and ending on December 31, 2022.
F2	On February 24, 2022 (the "RSU Grant Date"), the Reporting Person was granted 3,761 time-vested restricted stock units ("RSUs") pursuant to the Issuer's 2021 Equity Incentive Plan and the related award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date.

Content

This Form 4 reports the vesting on February 22, 2023 of 17,843 shares of common stock of Amkor Technology, Inc. (the "Issuer") underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 11, 2021 pursuant to the Issuer's Second Amended and Restated 2007 Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic cumulative earnings per share performance goal over a two-year performance period beginning January 1, 2021 and ending on December 31, 2022.

On February 24, 2022 (the "RSU Grant Date"), the Reporting Person was granted 3,761 time-vested restricted stock units ("RSUs") pursuant to the Issuer's 2021 Equity Incentive Plan and the related award agreement. The RSUs convert into shares of the Issuer's common stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date.