AMKOR TECHNOLOGY, INC. — Director's Dealing 2024

Apr 4, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2024-04-01

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

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-04-01	Restricted Stock Units	$	A	20.9884	Acquired		Common Stock (20.9884)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4407904	Direct
Common Stock	5117004	Indirect
Common Stock	3278001	Indirect
Common Stock	1338097	Indirect
Common Stock	2500000	Indirect
Common Stock	4418610	Indirect
Common Stock	19484809	Indirect
Common Stock	2478325	Indirect
Common Stock	16710668	Indirect
Common Stock	39594980	Indirect

Footnotes

F1: 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 of the Securities Exchange Act of 1934, as amended ("Section 16"), or for any other purpose.

F2: 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 4,418,610 shares of the Issuer's Common Stock; (ii) a trustee of GRATs for the benefit of members of her immediate family which own 9,733,102 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 2,500,000 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;

F3: (Continued from Footnote 2) (v) a manager of a limited liability company being treated as a corporation for purposes of Section 16 which owns 16,710,668 shares of the Issuer's Common Stock; (vi) as referenced in Footnote 7, a member of Sujoda Management, LLC, which indirectly owns 2,478,325 shares of the Issuer's Common Stock and (vii) a general partner of a limited partnership which owns 39,594,980 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.

F4: 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 April 1, 2024. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.