AMKOR TECHNOLOGY, INC. — Director's Dealing 2024

Feb 22, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2024-02-20

Reporting Person: KIM JAMES J (Director, 10% Owner, Member of 10% owner group (6))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-20	Common Stock	A	16444	—	Acquired	818215	Direct
2024-02-20	Common Stock	F	6976	$29.75	Disposed	811239	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-02-20	Restricted Stock Units	$	A	27731	Acquired		Common Stock (27731)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7828682	Indirect
Common Stock	164678	Indirect
Common Stock	1957350	Indirect
Common Stock	1338097	Indirect
Common Stock	715000	Indirect

Footnotes

F1: This Form 4 reports the vesting on February 20, 2024, of 16,444 shares of Amkor Technology, Inc. (the "Issuer") Common Stock underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 24, 2022 pursuant to the Issuer's Equity Incentive Plan, as amended, and the related award agreement. The PSUs vested based on the attainment of a basic
cumulative earnings per share performance goal over a two-year performance period beginning January 1, 2022 and ending on December 31, 2023.

F2: The transaction represents shares of the Issuer's Common Stock withheld by the Issuer in connection with the vesting of PSUs to satisfy the Reporting Person's tax withholding obligations. The Issuer will
pay these taxes on behalf of the Reporting Person.

F3: 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.

F4: The Reporting Person is (i) a trustee of grantor retained annuity trusts of which he was the settlor and is the sole annuitant which own 1,338,097 shares of the Issuer's Common Stock, (ii) a trustee of trusts for the benefit of his immediate family members which own 9,786,032 shares of the Issuer's Common Stock and (iii) a trustee of a trust which is a controlling member of a limited liability company being treated as a corporation for purposes of Section 16, which limited liability company holds 164,678 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: Represents shares of the Issuer's common stock underlying time-vested restricted stock units granted on February 20, 2024 (the "Grant Date") pursuant to the Issuer's Equity Incentive Plan (the "RSUs"). The RSUs were awarded for no consideration other than the Reporting Person's service as an officer of the Issuer and will vest in three equal annual installments beginning on the first anniversary of the Grant Date and annually thereafter, such that 100% will be vested on the third anniversary of the Grant Date.