[Form 4] Amkor Technology Inc Insider Trading Activity

Rhea-AI Filing Summary

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

Director MaryFrances McCourt reported two automatic equity accruals dated 25 June 2025 tied to the company’s quarterly cash dividend. The transactions involve dividend equivalent units (DEUs), which convert dividend payments on previously granted time-vested restricted stock units (RSUs) into additional RSUs under identical vesting terms.

• Grant 1 (original RSUs granted 16 May 2023): 33.3674 DEUs credited.
• Grant 2 (original RSUs granted 15 May 2025): 38.5269 DEUs credited.

No cash consideration was paid (exercise price = $0). Following these accruals, McCourt now holds 8,839.034 and 9,827.5269 RSUs, respectively, all recorded as direct ownership. The filing contains no sales, option exercises, or open-market purchases; it simply documents routine dividend-linked adjustments required under the original RSU agreements.

Because the combined addition of roughly 72 RSUs represents an immaterial change in ownership and carries no immediate earnings or liquidity impact, the filing appears administrative and non-material for most investors.

Insights

Corporate Governance Expert

TL;DR: Routine DEU credit; no strategic signal, negligible dilution.

This Form 4 discloses automatic dividend equivalent unit credits that slightly raise Director McCourt’s unvested RSU balance. Such adjustments are standard practice when the board declares cash dividends on unvested equity awards. The absence of discretionary transactions means there is no signal about insider sentiment or forthcoming corporate actions. From a governance angle, it confirms the company’s compliance with Section 16 reporting but does not alter insider alignment or control metrics.

Securities Analyst

TL;DR: Immaterial insider activity; neutral for valuation.

The aggregate 71.9 additional RSUs (~US$2,000–3,000 value at recent prices) has no earnings, dilution, or liquidity consequences for AMKR’s float. The filing offers no new information on operations, capital allocation, or strategy. Accordingly, the event is non-impactful for financial models or near-term stock performance.

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^*

McCourt MaryFrances

(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		33.3674		(1)	(1)	Common Stock	33.3674	$0	8,839.034	D
Restricted Stock Units	(2)	06/25/2025		A		38.5269		(2)	(2)	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 Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

2. Represents DEUs accrued upon the payment of a dividend on June 25, 2025 with respect to 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 MaryFrances McCourt	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 MaryFrances McCourt report in the latest AMKR Form 4?

She reported automatic crediting of 71.8943 dividend equivalent RSUs tied to the 25 June 2025 dividend.

Were any AMKR shares sold or purchased in this Form 4?

No. The filing reflects non-cash accruals; there were no sales or open-market purchases.

How many restricted stock units does McCourt now hold?

After the accrual, she holds 8,839.034 RSUs from the 2023 grant and 9,827.5269 RSUs from the 2025 grant.

Does this insider transaction affect AMKR’s share count?

The addition of roughly 72 RSUs is immaterial relative to AMKR’s total shares outstanding and has no meaningful dilution effect.

Is the Form 4 filing a signal of insider sentiment at Amkor Technology?

Because the units were accrued automatically under dividend provisions, the filing is administrative and provides no sentiment signal.