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

Amkor Technology, Inc. executive Farshad Haghighi reported multiple equity transactions on 11/14/2025 related to restricted stock units (RSUs).

Rhea-AI Filing Summary

Amkor Technology, Inc. executive Farshad Haghighi reported multiple equity transactions on 11/14/2025 related to restricted stock units (RSUs). Several RSU awards vested early due to his retirement eligibility, and the company withheld 66, 67, 269 and 395 shares of common stock to cover associated taxes at a price of $31.68 per share. These moves are administrative in nature and do not reflect open-market buying or selling. Following the reported transactions, he directly held 8,354 shares of Amkor common stock, along with remaining RSU awards that continue to represent potential future share delivery.

Insider Trade Summary

797 shares exercised/converted

Exercise 12 txns

Insider Haghighi Farshad

Role Executive Vice President

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	66	$0.00	$0.00
Exercise	Restricted Stock Units	67	$0.00	$0.00
Exercise	Restricted Stock Units	269	$0.00	$0.00
Exercise	Restricted Stock Units	395	$0.00	$0.00
Exercise	Common Stock	66	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	66	$31.68	$2K
Exercise	Common Stock	67	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	67	$31.68	$2K
Exercise	Common Stock	269	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	269	$31.68	$9K
Exercise	Common Stock	395	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	395	$31.68	$13K

Holdings After Transaction: Restricted Stock Units — 52,234 contracts (Direct); Common Stock — 8,354 shares (Direct)

Footnotes (4)

1. F1. The reported transaction involved the withholding of 66 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. F2. The reported transaction involved the withholding of 67 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. F3. The reported transaction involved the withholding of 269 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. F4. The reported transaction involved the withholding of 395 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.

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Accepted by SEC EDGAR 11/18/2025 - 04:35 PM Learn about SEC filing dates

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^*

Haghighi Farshad

(Last) (First) (Middle)

2045 EAST INNOVATION CIRCLE

(Street)

TEMPE AZ 85284

(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
X	Officer (give title below)		Other (specify below)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
11/14/2025

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	11/14/2025		M		66	A	$0	8,420	D
Common Stock	11/14/2025		F(1)		66	D	$31.68	8,354	D
Common Stock	11/14/2025		M		67	A	$0(1)	8,421	D
Common Stock	11/14/2025		F(2)		67	D	$31.68	8,354	D
Common Stock	11/14/2025		M		269	A	$0(2)	8,623	D
Common Stock	11/14/2025		F(3)		269	D	$31.68	8,354	D
Common Stock	11/14/2025		M		395	A	$0(3)	8,749	D
Common Stock	11/14/2025		F(4)		395	D	$31.68	8,354	D

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	$0(1)	11/14/2025		M			66(1)	(1)	(1)	Common Stock	66	$0	1,814	D
Restricted Stock Units	$0(2)	11/14/2025		M			67(2)	(2)	(2)	Common Stock	67	$0	3,644	D
Restricted Stock Units	$0(3)	11/14/2025		M			269(3)	(3)	(3)	Common Stock	269	$0	14,577	D
Restricted Stock Units	$0(4)	11/14/2025		M			395(4)	(4)	(4)	Common Stock	395	$0	32,199	D

Explanation of Responses:

1. The reported transaction involved the withholding of 66 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 67 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 269 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. The reported transaction involved the withholding of 395 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.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Farshad Haghighi	11/18/2025
	** 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.