Megan Faust - Dec 15, 2023 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: Dec 15, 2023
Transactions value $: -$64,719
Form type: 4
Date filed: 12/19/2023, 04:30 PM
Previous filing: Nov 20, 2023
Next filing: Jan 23, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMKR	Common Stock	Options Exercise	$25.6K	+2.7K	+7.63%	$9.48	38.1K	Dec 15, 2023	Direct
transaction	AMKR	Common Stock	Sale	-$90.3K	-2.7K	-7.09%	$33.45	35.4K	Dec 15, 2023	Direct	F1

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	-2.7K	-24.77%	$0.00	8.2K	Dec 15, 2023	Common Stock	2.7K	$9.48	Direct	F2

* 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 23, 2023.
F2	This stock option (the "Option") to acquire 150,000 shares of the Issuer's common stock (the "Option Shares") was granted on February 15, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.

Content

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 23, 2023.

This stock option (the "Option") to acquire 150,000 shares of the Issuer's common stock (the "Option Shares") was granted on February 15, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.