[Form 4] AMKOR TECHNOLOGY, INC. Insider Trading Activity

Rhea-AI Filing Summary

Amkor Technology, Inc. (AMKR)November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of common stock of Amkor Technology, Inc. to the Agnes C. Kim Revocable Trust, where she is the settlor, sole trustee, and sole beneficiary. The transaction was reported at a price of $0 per share and coded as a change in form of ownership.

Following this distribution, 705,000 shares are shown as indirectly held through trusts. The form also notes 12,290,281 shares of common stock indirectly owned by the reporting person’s spouse, James J. Kim. Agnes C. Kim formally disclaims beneficial ownership of the spouse-held shares except to the extent of any pecuniary interest.

11/24/2025 - 08:58 PM

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

KIM AGNES C

(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)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Member of 10% owner group (3)

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

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

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	11/20/2025		G		705,000(1)	A	$0	705,000	I	By trusts
Common Stock								12,290,281(2)	I	By Spouse

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

Explanation of Responses:

1. On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of the Common Stock of Amkor Technology, Inc (the "Issuer") to the Agnes C. Kim Revocable Trust, of which the Reporting Person is the settlor, sole trustee, and sole beneficiary. Susan Y. Kim is the sole trustee of the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024.

2. James J. Kim is the spouse of the Reporting Person. 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.

Remarks:

	/s/ Brian D. Short, Attorney-in-Fact for Agnes C. Kim	11/24/2025
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Amkor Technology (AMKR) report in this Form 4?

The filing reports that on November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of Amkor common stock to the Agnes C. Kim Revocable Trust, a change in form of indirect ownership.

How many Amkor (AMKR) shares were involved in the trust transfer?

The trust distribution involved 705,000 shares of Amkor Technology, Inc. common stock, transferred from the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 to the Agnes C. Kim Revocable Trust.

What was the reported price for the 705,000 Amkor (AMKR) shares in the Form 4?

The 705,000 shares transferred between trusts were reported at a price of $0 per share, consistent with an internal reallocation of beneficial ownership rather than an open-market sale.

How many Amkor (AMKR) shares are shown as indirectly owned by the insider and spouse?

The filing shows 705,000 shares indirectly held through trusts associated with Agnes C. Kim and 12,290,281 shares of common stock indirectly owned by her spouse, James J. Kim, with Agnes C. Kim disclaiming beneficial ownership of the spouse-held shares except for any pecuniary interest.

What is the relationship of the reporting person to Amkor Technology (AMKR)?

The reporting person, Agnes C. Kim, is identified as having an "Other" relationship to Amkor Technology, Inc., rather than as a director, officer, or 10% owner in her own name, with indirect ownership reported through trusts and her spouse.

Does the Amkor (AMKR) Form 4 indicate a sale of shares into the market?

The Form 4 describes a distribution of 705,000 shares between trusts associated with the reporting person at $0 per share, indicating a change in the form of beneficial ownership rather than a market sale.