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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1047127	Amkor Technology Inc.	AMKR	Semiconductors & Related Devices (3674)	231722724

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1596796	Jean Marie Guillaume Rutten	2045 East Innovation Circle Tempe AZ 85284	President And Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2023-04-17	5,000	$9.48	139,808	No	4	M	Direct
Common Stock	Acquisiton	2023-04-17	10,000	$14.17	149,808	No	4	M	Direct
Common Stock	Disposition	2023-04-17	30,000	$23.92	119,808	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right-to-Buy)	Disposition	2023-04-17	5,000	$0.00	5,000	$9.48
Common Stock	Employee Stock Option (Right-to-Buy)	Disposition	2023-04-17	10,000	$0.00	10,000	$14.17

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
10,265	2020-02-15	2029-02-15	No	4	M	Direct
102,500	2020-10-30	2030-07-30	No	4	M	Direct

Footnotes

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2022.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.53 to $24.11. 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.
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 Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the 2019 Option Shares, on the first anniversary of the 2019 Option 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 vested on the fourth anniversary of the 2019 Option Grant Date.
This stock option (the "2020 Option") to acquire 375,000 shares of the Issuer's common stock was granted on July 30, 2020 (the "2020 Option Grant Date") and will vest in equal quarterly installments over three years, such that 100% of the 2020 Option will be vested on the third anniversary of the 2020 Option Grant Date.