AMKOR TECHNOLOGY, INC. — Director's Dealing 2023

Feb 25, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMKOR TECHNOLOGY, INC. (AMKR)
CIK: 0001047127
Period of Report: 2023-02-22

Reporting Person: KIM JAMES J (Director, 10% Owner, Member of 10% owner group (12))

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-22	Common Stock	J	384000	$25.28	Acquired	3584499	Direct
2023-02-22	Common Stock	J	384000	$25.28	Acquired	3968499	Direct
2023-02-22	Common Stock	J	384000	$25.28	Acquired	4352499	Direct
2023-02-22	Common Stock	J	384000	$25.28	Acquired	4736499	Direct
2023-02-22	Common Stock	J	384000	$25.28	Acquired	5120499	Direct
2023-02-22	Common Stock	A	59477	$0.00	Acquired	5179976	Direct
2023-02-22	Common Stock	F	25267	$25.28	Disposed	5154709	Direct
2023-02-24	Common Stock	M	2599	$0.00	Acquired	5157308	Direct
2023-02-24	Common Stock	F	1053	$25.27	Disposed	5156255	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-24	Restricted Stock Units	$0.00	M	2599	Disposed		Common Stock (2599)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3278001	Indirect
Common Stock	49594980	Indirect
Common Stock	1957350	Indirect
Common Stock	7828682	Indirect
Common Stock	1379943	Indirect
Common Stock	2298355	Indirect
Common Stock	164678	Indirect
Common Stock	2985370	Indirect

Footnotes

F1: On February 22, 2023, the Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92 sold 384,000 shares of Common Stock of Amkor Technology, Inc. (the "Issuer") to the Reporting Person in full payment of the principal and accrued interest of a note payable to the Reporting Person by such trust. This transaction is exempt pursuant to Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), and is voluntarily reported.

F2: On February 22, 2023, the Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01 sold 384,000 shares of the Issuer's Common Stock to the Reporting Person in full payment of the principal and accrued interest of a note payable to the Reporting Person by such trust. This transaction is exempt pursuant to Section 16 and is voluntarily reported.

F3: On February 22, 2023, the Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01 sold 384,000 shares of the Issuer's Common Stock to the Reporting Person in full payment of the principal and accrued interest of a note payable to the Reporting Person by such trust. This transaction is exempt pursuant to Section 16 and is voluntarily reported.

F4: On February 22, 2023, the Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94 sold 384,000 shares of the Issuer's Common Stock to the Reporting Person in full payment of the principal and accrued interest of a note payable to the Reporting Person by such trust. This transaction is exempt pursuant to Section 16 and is voluntarily reported.

F5: On February 22, 2023, the Irrevocable Deed of Trust of James J. Kim, Settlor, FBO Jason Lee Kim dated 11/17/03 sold 384,000 shares of the Issuer's Common Stock to the Reporting Person in full payment of the principal and accrued interest of a note payable to the Reporting Person by such trust. This transaction is exempt pursuant to Section 16 and is voluntarily reported.

F6: This Form 4 reports the vesting on February 22, 2023, of 59,477 shares of the Issuer's Common Stock underlying performance-vested restricted stock units ("PSUs") granted to the Reporting Person on February 11, 2021 pursuant to the Issuer's Second Amended and Restated 2007 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, 2021 and ending on December 31, 2022.

F7: 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.

F8: On February 24, 2022 (the "RSU Grant Date"), the Reporting Person was granted 10,748 time-vested restricted stock units ("RSUs") pursuant to the Issuer's 2021 Equity Incentive Plan, as amended, and the applicable award agreement. The RSUs convert into shares of the Issuer's Common Stock on a one-to-one basis and vest in four equal annual installments beginning on the first anniversary of the RSU Grant Date.

F9: The transaction represents shares withheld by the Issuer in connection with the vesting of certain RSUs granted to the Reporting Person on the RSU Grant Date. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person.

F10: 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.

F11: The Reporting Person is (i) a trustee of trusts for the benefit of his immediate family members which own 13,464,330 shares of the Issuer's Common Stock, (ii) 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, (iii) a trustee of grantor retained annuity trusts of which he was the settlor and is the sole annuitant which own 2,985,370 shares of the Issuer's Common Stock and (iv) a general partner of a limited partnership which owns 49,594,980 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.