AMKOR TECHNOLOGY, INC. — Director's Dealing 2023

Jun 29, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2023-06-26

Reporting Person: KIM SUSAN Y (Director, 10% Owner, Member of 10% owner group (9))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-06-27	Common Stock	G	230001	$0.00	Disposed	887622	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-06-26	Restricted Stock Units	$	A	24.1218	Acquired		Common Stock (24.1218)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7322423	Direct
Common Stock	5117004	Indirect
Common Stock	3278001	Indirect
Common Stock	1867747	Indirect
Common Stock	2660840	Indirect
Common Stock	498232	Indirect
Common Stock	7261498	Indirect
Common Stock	3338298	Indirect
Common Stock	19484809	Indirect
Common Stock	2478325	Indirect
Common Stock	8200000	Indirect

Footnotes

F1: On June 27, 2023, the Qualified Annuity Trust under the James J. Kim 2020-1 Annuity Trust Agreement Dated 04/01/20 (the "JJK Trust") distributed 230,001 shares of the Common Stock of Amkor Technology, Inc. (the "Issuer") to James J. Kim. The Reporting Person and James J. Kim are co-trustees of the JJK Trust.

F2: 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 ("Section 16"), or for any other purpose.

F3: The Reporting Person is (i) a trustee of trusts for the benefit of her immediate family members (other than grantor retained annuity trusts ("GRATs")) which own 7,261,498 shares of the Issuer's common stock, (ii) a trustee of GRATs for the benefit of members of her immediate family which own 14,309,446 shares of
the Issuer's common stock, (iii) a trustee of GRATs of which the Reporting Person was the settlor and is the sole annuitant which own 3,338,298 shares of the Issuer's common stock, (iv) a general partner of a limited partnership (Sujochil, LP) which owns 19,484,809 shares of the Issuer's common stock,

F4: (Continued from Footnote 3) (v) a manager of limited liability companies being treated as corporations for purposes of Section 16, which own 8,200,000 shares of the Issuer's common stock and (vi) as referenced in Footnote 6, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the
Issuer's common stock. Pursuant to the Form 4 instructions, the Reporting Person is being treated as having a pecuniary interest in all of such shares.

F5: On June 16, 2023, the Qualified Annuity Trust under the Susan Y. Kim 2020-1 Irrevocable Trust Agreement Dated 04/01/2020 (the "SYK Trust") distributed 340,000 shares of the Issuer's Common Stock to the Reporting Person. Because the Reporting Person is the annuitant and a trustee of the SYK Trust, such distribution was a mere change in the form of ownership from indirect to direct and hence not reportable by the Reporting Person on a Form 4.

F6: On April 25, 2023, the Qualified Annuity Trust under the John T. Kim 2018 Irrevocable Trust Agreement Dated 2/6/18 (the "JTK Trust") distributed 255,000 shares of the Issuer's common stock to John T. Kim. The Reporting Person and John T. Kim are co-trustees of the JTK Trust. The JTK Trust filed a Form 4 on April 26, 2023 reporting the transaction, and the Reporting Person inadvertently omitted the transaction from Form 4s filed on May 3, 2023 and May 18, 2023.

F7: The sole general partner of Sujoda Investments, LP is Sujoda Management, LLC. The Reporting Person is one of three members of Sujoda Management, LLC. Sujoda Management, LLC is being treated as a limited partnership for purposes of Section 16, and, pursuant to the Form 4 instructions, the Reporting
Person has elected to treat all of the shares of the Issuer's common stock owned by Sujoda Investments, LP as beneficially owned by the Reporting Person.

F8: Represents dividend equivalent units ("DEUs") accrued with respect to time-vested restricted stock units ("RSUs") of the Issuer upon the Issuer's payment of a dividend on June 26, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.