Dividend units lift Amkor (AMKR) director Watson’s restricted stock holdings

Rhea-AI Filing Summary

WATSON DAVID N reported acquisition or exercise transactions in this Form 4 filing.

AMKOR TECHNOLOGY, INC. director David N. Watson received a small grant of additional restricted stock units as part of his existing equity compensation. The award covers 18.1563 dividend equivalent units, each representing one extra time-vested RSU tied to a cash dividend paid on March 31, 2026.

After this grant, Watson directly holds a total of 9,893.0573 restricted stock units. This is a routine, non-cash compensation adjustment rather than an open-market stock purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider WATSON DAVID N

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	18.156	$0.00	--

Holdings After Transaction: Restricted Stock Units — 9,893.057 shares (Direct)

Footnotes (1)

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Key Figures

RSUs granted: 18.1563 units RSUs after transaction: 9,893.0573 units Transaction price: $0.0000 per unit

3 metrics

RSUs granted 18.1563 units Dividend equivalent restricted stock units granted March 31, 2026

RSUs after transaction 9,893.0573 units Total restricted stock units held directly after award

Transaction price $0.0000 per unit Non-cash grant/award acquisition of RSUs

Key Terms

Restricted Stock Units, dividend equivalent units, time-vested restricted stock units, Grant, award, or other acquisition

4 terms

Restricted Stock Units financial

"security_title: "Restricted Stock Units""

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

dividend equivalent units financial

"Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend"

time-vested restricted stock units financial

"with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc."

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

Form 4 Insider Transactions: What Each Field Means →

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^*

WATSON DAVID N

(Last) (First) (Middle)

2045 EAST INNOVATION CIRCLE

(Street)

TEMPE ARIZONA 85284

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)	03/31/2026		A		18.1563		(1)	(1)	Common Stock	18.1563	$0	9,893.0573	D

Explanation of Responses:

1. Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on March 31, 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 15, 2026. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for David N. Watson	04/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did AMKR director David N. Watson report?

David N. Watson reported receiving 18.1563 restricted stock units in the form of dividend equivalent units. These units were added to his existing time-vested RSUs as routine equity compensation, not through an open-market share purchase or sale.

How many Amkor (AMKR) restricted stock units does David N. Watson now hold?

Following the latest award, David N. Watson directly holds 9,893.0573 restricted stock units. This total reflects his accumulated time-vested RSUs, including the additional 18.1563 dividend equivalent units credited in connection with the March 31, 2026 dividend.

What are dividend equivalent units (DEUs) in the Amkor (AMKR) Form 4 filing?

Dividend equivalent units are additional RSUs credited when a cash dividend is paid on underlying shares. For Watson, each DEU represents one extra time-vested restricted stock unit that follows the same vesting and other terms as the original RSU grant.

Did David N. Watson buy or sell Amkor (AMKR) shares in this Form 4?

No, the Form 4 shows an equity award acquisition, not a market trade. Watson received 18.1563 dividend equivalent restricted stock units as part of his compensation, with no open-market buying or selling of Amkor common stock involved.

Why is the transaction price per share $0.0000 in the AMKR Form 4?

The price appears as $0.0000 because the units were granted as compensation, not purchased for cash. Dividend equivalent units are issued in connection with a cash dividend and follow the RSU award terms rather than being bought on the open market.