Susan Y. Kim - Jul 1, 2021 Form 4/A - Amendment Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role: Director, Member of 10% owner group, 10%+ Owner
Signature: /s/ Richard D. Rosen, Attorney-in-Fact
Stock symbol: AMKR
Transactions as of: Jul 1, 2021
Transactions value $: $0
Form type: 4/A - Amendment
Date filed: 4/21/2022, 11:35 AM
Date Of Original Report: Jan 21, 2022
Previous filing: May 19, 2021
Next filing: Apr 20, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	AMKR	Common Stock						4.08M	Jul 1, 2021	By Agnes C. Kim GRAT dtd 12/16/20	F1, F4
holding	AMKR	Common Stock						9.18M	Jul 1, 2021	By trusts (excl. all GRATs)	F2, F4
holding	AMKR	Common Stock						6.19M	Jul 1, 2021	By Sujoda Investments, LP	F3, F4

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

Explanation of Responses:

Id	Content
F1	On January 21, 2022, the Reporting Person filed a Form 4 (the "Original Form 4") which inadvertently omitted the Reporting Person's indirect ownership of 4,083,065 shares of Common Stock of Amkor Technology, Inc. (the "Issuer") held by a grantor retained annuity trust created by Agnes C. Kim. The Reporting Person is the sole trustee of such trust. Agnes C. Kim is the mother of the Reporting Person.
F2	The Original Form 4 inadvertently reported that, following the transactions reported on such Form 4, the Reporting Person indirectly owned 9,016,820 shares of the Issuer's Common Stock as a trustee of various trusts (other than grantor retained annuity trusts) for the benefit of immediate family members of the Reporting Person. In fact, the number of shares of the Issuer's Common Stock indirectly so owned by the Reporting Person after the transactions reported on such Form 4 was 9,181,498.
F3	The Original Form 4 inadvertently reported that, following the transactions reported on such Form 4, the Reporting Person indirectly owned 2,478,325 shares of the Issuer's Common stock by Sujoda Investments, LP. In fact, the number of shares of the Issuer's Common Stock indirectly so owned by the Reporting Person after the transactions reported on such Form 4 was 6,189,831.
F4	The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities, except to the extent of the Reporting Person's pecuniary interest therein, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.