SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* KIM JAMES J (Last) (First) (Middle) C/O SIANA CARR O'CONNOR & LYNAM 1500 EAST LANCASTER AVENUE (Street) PAOLI PA 19301-9713 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol AMKOR TECHNOLOGY, INC. [ AMKR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) X Other (specify below) Member of 10% owner group (8)
	3. Date of Earliest Transaction (Month/Day/Year) 12/19/2023
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person
	Rule 10b5-1(c) Transaction Indication Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/19/2023		M		93	A	$0.00(1)	269,345	D
Common Stock	12/19/2023		F(1)		93	D	$33.79	269,252	D
Common Stock	12/19/2023		M		88	A	$0.00(2)	269,340	D
Common Stock	12/19/2023		F(2)		88	D	$33.79	269,252	D
Common Stock	12/19/2023		M		78	A	$0.00(3)	269,330	D
Common Stock	12/19/2023		F(3)		78	D	$33.79	269,252	D
Common Stock	12/19/2023		G		529,650(4)	D	$0.00	1,338,097(5)(6)	I	By self as Trustee of own GRATs
Common Stock	12/19/2023		G		529,650(4)	A	$0.00	798,902	D
Common Stock								1,957,350(5)(6)	I	By John T. Kim G-S Trust dtd. 12/11/12
Common Stock								7,828,682(5)(6)	I	By John T. Kim Family Trust U/A dtd. 12/11/12
Common Stock								164,678(5)(6)	I	By self as Trustee of Trust U/A dtd. 12/11/12

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	12/19/2023		M			93(1)	(1)	(1)	Common Stock	93	$0.00	5,353	D
Restricted Stock Units	(2)	12/19/2023		M			88(2)	(2)	(2)	Common Stock	88	$0.00	7,973(7)	D
Restricted Stock Units	(3)	12/19/2023		M			78(3)	(3)	(3)	Common Stock	78	$0.00	9,201	D

Explanation of Responses:

1. The reported transaction involved the withholding of 93 shares of common stock of Amkor Technology, Inc. (the "Issuer") issuable upon the early vesting of an equal number of restricted stock units ("RSUs") to pay taxes associated with the Reporting Person's retirement eligibility status.

2. The reported transaction involved the withholding of 88 shares of the Issuer's Common Stock issuable upon the early vesting of an equal number of RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

3. The reported transaction involved the withholding of 78 shares of the Issuer's Common Stock issuable upon the early vesting of an equal number of RSUs to pay taxes associated with the Reporting Person's retirement eligibility status.

4. On December 19, 2023, the James J. Kim 2021 Qualified Annuity Trust U/A dated 12/15/2021 distributed 529,650 of the Issuer's Common Stock to the Reporting Person.

5. 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.

6. 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.

7. Reflects an adjustment of 88 RSUs incorrectly attributed to the Reporting Person on the Form 4 filed on behalf of the Reporting Person on February 24, 2023 that had been surrendered for the Reporting Person's retirement eligibility withholding.

Remarks:

(8) The Reporting Person states that the filing of this Form 4 shall not be deemed an admission that the Reporting Person is the beneficial owner of the reported securities owned by the other members of the group, for the purpose of Section 16, or for any other purpose.

	/s/ Brian D. Short, Attorney-in-Fact for James J. Kim	12/21/2023
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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