[Form 4] Amkor Technology Inc Insider Trading Activity

Rhea-AI Filing Summary

Form 4 filing – Amkor Technology, Inc. (AMKR)

Director John D. Liu reported one insider transaction dated 06/25/2025. The transaction reflects the automatic crediting of 38.5269 dividend-equivalent units (DEUs), booked as additional time-vested restricted stock units (RSUs). These DEUs arose from the company’s dividend paid on 06/25/2025 and inherit the same vesting schedule as the RSUs originally granted on 05/15/2025.

Following the credit, Liu’s direct ownership stands at 9,827.5269 RSUs. The filing lists a transaction price of $0, indicating no cash outlay and no open-market activity. No changes were reported for non-derivative holdings or indirect ownership.

The document was signed by attorney-in-fact Mark N. Rogers on 06/27/2025. The filing is compliant with Section 16 reporting requirements and contains no indications of sales, option exercises, or other material equity movements.

Insights

Securities Analyst

TL;DR – Routine DEU credit; immaterial to AMKR valuation.

The Form 4 shows a small, non-cash accrual of 38.5 RSUs tied to a dividend. Such credits are standard for equity awards and do not signal insider sentiment or alter liquidity. Liu’s total RSU stake (≈9.8k units) remains modest relative to Amkor’s 246 m outstanding shares, so dilution and control implications are negligible. No buy/sell activity occurred, keeping market supply unchanged. Overall, the disclosure is procedural and carries neutral investment impact.

Corporate Governance Expert

TL;DR – Governance-compliant reporting; nothing atypical detected.

The insider met the two-day Form 4 deadline, and the notation of Rule 10b5-1 compliance box confirms awareness of revised SEC requirements. The accrual aligns director incentives with shareholder dividends, but at <0.02% of total outstanding equity, it lacks material influence. No red flags concerning untimely filing, unexplained disposals, or concentration risk are present. Consequently, governance observers should view this as routine maintenance.

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^*

LIU JOHN D

(Last) (First) (Middle)

2045 E 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 John D. Liu	06/27/2025
	** 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 did AMKR director John D. Liu acquire in the 06/25/2025 transaction?

He received 38.5269 dividend-equivalent restricted stock units credited at no cost.

How many RSUs does Liu own after this Form 4 filing?

His direct beneficial ownership totals 9,827.5269 RSUs.

Was there any cash purchase or sale of AMKR common stock?

No. The filing reports a non-cash RSU credit with a stated price of $0.

Does this Form 4 indicate Rule 10b5-1 plan usage?

Yes, the form includes the checkbox referencing transactions under Rule 10b5-1(c) conditions.

Why were the dividend-equivalent units granted?

They compensate RSU holders for the cash dividend paid on 06/25/2025, preserving economic parity with common shareholders.