Megan Faust - Sep 16, 2021 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role: CFO
Signature: Mark N. Rogers, Attorney-in-Fact for Megan Faust
Stock symbol: AMKR
Transactions as of: Sep 16, 2021
Transactions value $: -$98,450
Form type: 4
Date filed: 9/20/2021, 05:02 PM
Previous filing: Aug 19, 2021
Next filing: Oct 22, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMKR	Common Stock	Options Exercise	$40K	+4.5K	+30.32%	$8.88	19.3K	Sep 16, 2021	Direct
transaction	AMKR	Common Stock	Options Exercise	$4.74K	+500	+2.58%	$9.48	19.8K	Sep 16, 2021	Direct
transaction	AMKR	Common Stock	Sale	-$143K	-5K	-25.2%	$28.63	14.8K	Sep 16, 2021	Direct	F1, 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	Employee Stock Option (Right-to-Buy)	Options Exercise	$0	-4.5K	-100%	$0.00^*	0	Sep 16, 2021	Common Stock	4.5K	$8.88	Direct	F3
transaction	AMKR	Employee Stock Option (right-to-Buy)	Options Exercise	$0	-500	-0.33%	$0.00	150K	Sep 16, 2021	Common Stock	500	$9.48	Direct	F4

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

Explanation of Responses:

Id	Content
F1	The sale reported in this Form 4 was 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 $28.45 to $28.73.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 "2016 Option") to acquire 75,000 shares of the Issuer's common stock (the "2016 Option Shares") was granted on September 12, 2016 (the "2016 Grant Date") and vested over four years as follows: (i) with respect to 25% of the 2016 Option Shares, on the first anniversary of the 2016 Grant Date; and (ii) with respect to the remainder of the 2016 Option Shares, in equal quarterly installments thereafter, such that 100% of the 2016 Option became vested on the fourth anniversary of the 2016 Grant Date.
F4	This stock option (the "2019 Option") to acquire 150,000 shares of the Issuer's common stock (the "2019 Option Shares") was granted on February 15, 2019 (the "2019 Grant Date") and vests over four years as follows: (i) with respect to 25% of the 2019 Option Shares, on the first anniversary of the 2019 Grant Date; and (ii) with respect to the remainder of the 2019 Option Shares, in equal quarterly installments thereafter, such that 100% of the 2019 Option will vest on the fourth anniversary of the 2019 Grant Date.