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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
1581432	Charles John Stone	1514 Rockrose Way Chandler AZ 85248	Executive Vice President	No	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
Amkor Technology, Inc., Common Stock	Acquisiton	2019-10-31	32,646	$9.86	62,368	No	4	M	Direct
Amkor Technology, Inc., Common Stock	Disposition	2019-10-31	32,646	$13.40	29,722	No	4	S	Direct
Amkor Technology, Inc., Common Stock	Disposition	2019-10-31	4,706	$13.72	25,016	No	4	S	Direct
Amkor Technology, Inc., Common Stock	Acquisiton	2019-11-01	61,104	$9.86	86,120	No	4	M	Direct
Amkor Technology, Inc., Common Stock	Disposition	2019-11-01	61,104	$12.78	25,016	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	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
Amkor Technology, Inc. Common Stock	Employee Stock Option (Right-to-Buy)	Acquisiton	2019-10-31	32,646	$0.00	32,646	$9.86
Amkor Technology, Inc., Common Stock	Employee Stock Option (Right-to-Buy)	Acquisiton	2019-11-01	61,104	$0.00	61,104	$9.86

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
117,354	2018-02-27	2027-02-27	No	4	M	Direct
56,250	2018-02-27	2027-02-27	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Amkor Technology, Inc., Common Stock	2,000	Indirect	Held in Trust

Footnotes

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 13.00 to 13.72.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from 12.50 to 12.92.
The stock options will vest over four years; 25% on the first anniversary of the grant date and 1/16 of the option will vest each quarter thereafter so that at the end of the fourth year, 100% of the option will be vested.