[Form 4] Amkor Technology Inc Insider Trading Activity

Rhea-AI Filing Summary

Amkor Technology, Inc. (AMKR) – Form 4 insider filing dated June 25, 2025

Director Daniel J. Liao reported the automatic acquisition of 38.5269 dividend-equivalent restricted stock units (RSUs). The RSUs were credited in connection with the company’s June 25 cash dividend and are subject to the same vesting terms as the original May 15, 2025 time-vested RSU grant. Following the credit, Liao now beneficially owns 9,827.5269 RSUs in a direct capacity. No common shares were sold, and no cash consideration was paid ($0 exercise price). The filing reflects routine dividend-related adjustments rather than discretionary trading activity, and it does not alter ownership status or control thresholds.

Insights

Corporate Governance Analyst

TL;DR: Routine dividend RSU credit; negligible ownership change, neutral governance impact.

This Form 4 documents a standard dividend-equivalent adjustment: 38.5269 RSUs added to Director Liao’s existing grant. Such credits are customary, non-cash, and do not signal any strategic intent or information asymmetry. Post-transaction ownership rises by only 0.4% (≈38/9,789), leaving board alignment and voting power effectively unchanged. No buy/sell decisions were made, so market signaling is minimal. Investors should view this as housekeeping rather than an indicator of bullish or bearish sentiment.

Securities Attorney

TL;DR: Compliance filing, reflects dividend-equivalent accrual; no marketable transaction.

The report satisfies Section 16 obligations after dividend distribution. Because RSUs are credited at $0, there is no insider purchase requiring capital outlay or Rule 10b5-1 reliance. The small quantity and lack of open-market activity imply the disclosure is administratively necessary but not financially material. From a legal-risk standpoint, the filing appears timely and accurate, mitigating potential compliance exposure.

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^*

Liao Daniel JL

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/25/2025

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

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)	06/25/2025		A		38.5269		(1)	(1)	Common Stock	38.5269	$0	9,827.5269	D

Explanation of Responses:

1. Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 25, 2025 with respect to time-vested restricted stock units ("RSUs") of the Issuer granted to the Reporting Person on May 15, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

Remarks:

	Mark N. Rogers, Attorney-in-Fact for Daniel Liao	06/25/2025
	** 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

How many Amkor (AMKR) shares did Director Daniel Liao acquire on 06/25/2025?

He received 38.5269 dividend-equivalent RSUs; no common shares were bought or sold.

What is Daniel Liao's total RSU holding after this Form 4 filing?

His direct beneficial ownership is now 9,827.5269 RSUs.

Was any cash paid for the RSUs disclosed in the Form 4?

No. The RSUs were credited at $0 exercise price as part of a dividend adjustment.

Does this Form 4 indicate insider buying or selling of AMKR stock?

No. It reflects a routine dividend-equivalent adjustment, not an open-market transaction.

Why were dividend-equivalent units (DEUs) granted to the director?

DEUs ensure RSU holders receive economic value consistent with cash dividends, maintaining parity with common shareholders.