AMKOR TECHNOLOGY, INC. — Director's Dealing 2022

May 19, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2022-05-17

Reporting Person: KIM SUSAN Y (Director, 10% Owner, Member of 10% owner group (5))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-05-17	Common Stock	A	8706	$0.00	Acquired	5384190	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3328065	Indirect
Common Stock	1028132	Indirect
Common Stock	1401123	Indirect
Common Stock	2675911	Indirect
Common Stock	2353347	Indirect
Common Stock	4224548	Indirect
Common Stock	9181498	Indirect
Common Stock	19484809	Indirect
Common Stock	2478325	Indirect
Common Stock	8200000	Indirect

Footnotes

F1: Represents shares of Amkor Technology, Inc. (the "Issuer") common stock underlying time-vested restricted stock units granted on May 17, 2022 (the "Grant Date") pursuant to the Issuer's Equity Incentive Plan (the "RSUs"). Subject to the terms and conditions of the applicable award agreement, the RSUs will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of the stockholders immediately following the Grant Date. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

F2: The Reporting Person is (i) a trustee of trusts for the benefit of her immediate family members (other than grantor retained annuity trusts) which own 9,181,498 shares of the Issuer's Common Stock, (ii) a trustee of grantor retained annuity trusts created by members of her immediate family which own 10,786,578 shares of the Issuer's Common Stock, (iii) a trustee of grantor retained annuity trusts of which she was the settlor and is the sole annuitant which own 4,224,548 shares of the Issuer's Common stock, (iv) a general partner of a limited partnership which owns 19,484,809 shares of the Issuer's Common Stock, (v) a manager of limited liability companies being treated as corporations for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"),

F3: (Continued from Footnote 2) which own 8,200,00 shares of the Issuer's Common Stock and (vi) a manager of a manager-managed limited liability company being treated as a limited partnership for purposes of Section 16 which owns 2,478,325 shares of the Issuer's Common Stock.

F4: Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of these shares. 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, or for any other purpose.