[Form 4] Amkor Technology Inc Insider Trading Activity

Rhea-AI Filing Summary

Amkor Technology, Inc. (AMKR) – Form 4 insider filing. Director Roger A. Carolin reported two automatic accruals of dividend-equivalent units (DEUs) on 25 Jun 2025, tied to previously granted restricted stock units (RSUs).

• Transaction code: A (acquisition by issuer without payment).
• Units acquired: 33.3674 and 38.5269 RSUs, totalling 71.8943 new RSUs at $0 cost.
• Post-transaction holdings: 8,839.034 RSUs (2023 grant series) and 9,827.5269 RSUs (2025 grant series), all held directly.
• DEUs carry the same vesting terms as the underlying RSUs and convert to common stock upon vesting.

No open-market activity occurred; the filing reflects routine, non-cash adjustments following the company’s dividend payment on the same date. There is no immediate balance-sheet or P&L impact on Amkor, and the modest increase in insider ownership is generally viewed as neutral from a market-moving perspective.

Insights

Securities Analyst

TL;DR: Routine dividend-equivalent RSU accrual; negligible market impact, neutral insider signal.

The Form 4 shows Director Roger Carolin receiving 71.89 additional RSUs through dividend-equivalent accrual—an automatic mechanism tied to Amkor’s cash dividend. Because no cash was paid and the amounts are immaterial relative to Amkor’s 247 million shares outstanding, the filing does not alter the company’s capital structure or indicate insider conviction. The direct ownership increase is minor and common for dividend-paying issuers that grant RSUs. From a valuation or sentiment standpoint, the disclosure is neutral; investors should not expect share-price movement solely on this information.

Corporate Governance Expert

TL;DR: Governance-compliant DEU crediting; confirms alignment but not strategically significant.

DEUs ensure RSU holders are economically whole when dividends are declared, aligning board compensation with shareholder returns. The report confirms Amkor’s equity plan mechanics and timely Section 16 compliance. No 10b5-1 plan was invoked, and ownership remains direct, simplifying transparency. However, because the acquisition is formulaic and cost-free, it lacks the positive signaling often associated with open-market buys. Hence, governance standards are met, but the strategic relevance for investors is minimal.

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^*

Carolin Roger Anthony

(Last) (First) (Middle)

7 GREAT VALLEY PARKWAY,

SUITE 190

(Street)

MALVERN PA 19355

(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 Roger A. Carolin	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

How many RSUs did AMKR director Roger A. Carolin acquire on 25 Jun 2025?

He received 33.3674 and 38.5269 RSUs—71.8943 units in total—through dividend-equivalent accrual.

Did the AMKR insider pay cash for these RSUs?

No. The RSUs were credited at $0 cost as dividend-equivalent units tied to existing grants.

What are Carolin’s total derivative holdings after the transactions?

He now holds 8,839.034 RSUs from the 2023 grant series and 9,827.5269 RSUs from the 2025 series, all directly.

Does this Form 4 indicate a 10b5-1 trading plan?

The filing does not reference a Rule 10b5-1 plan; the acquisitions were automatic under the equity plan.

Why were the RSUs granted?

They are dividend-equivalent units issued because Amkor paid a dividend on 25 Jun 2025, maintaining economic parity for RSU holders.