Amkor director awarded dividend-linked RSU units

AMKOR TECHNOLOGY, INC. director Tily Gil C. reported an acquisition of additional equity-based compensation.

Accepted by SEC EDGAR 04/02/2026 - 07:00 PM EDT

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Form Type

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. director Tily Gil C. reported an acquisition of additional equity-based compensation. On March 31, 2026, the director received 18.1563 dividend equivalent units, each representing an additional restricted stock unit tied to a prior May 15, 2025 RSU grant. Following this award, the director directly holds 9,893.0573 restricted stock units linked to Amkor common stock.

Insider Trade Summary

Grant/Award: 18.1563 shares

Grant/Award 1 txn

Insider Tily Gil C.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	18.1563	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 9,893.0573 contracts (Direct)

Holdings Before and After: Restricted Stock Units, 9,874.901 to 9,893.0573 contracts (Direct)

Footnotes (1)

F1. 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, 2025. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued.

Key Figures

Dividend equivalent units granted: 18.1563 units RSU holdings after transaction: 9,893.0573 units Original RSU grant date: May 15, 2025 +1 more

4 metrics

Dividend equivalent units granted 18.1563 units Accrued on March 31, 2026 on time-vested RSUs

RSU holdings after transaction 9,893.0573 units Total restricted stock units following March 31, 2026 DEU grant

Original RSU grant date May 15, 2025 Time-vested RSUs to which the DEUs relate

Transaction code A Grant, award, or other acquisition of derivative security

Key Terms

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

4 terms

Restricted Stock Units financial

"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")"

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 on March 31, 2026"

Dividend equivalent units are bookkeeping credits that mirror cash dividends paid on actual shares, granted to holders of stock-based awards such as restricted stock units or deferred compensation. They matter to investors because they increase a company’s reported employee compensation cost and can lead to issuance of more shares or cash payouts over time, similar to extra pay linked to ownership that affects shareholder dilution and corporate cash flow.

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""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did AMKR director Tily Gil C. report on this Form 4?

Director Tily Gil C. reported receiving 18.1563 dividend equivalent units on March 31, 2026. These units were accrued on outstanding time-vested restricted stock units and increase the director’s equity-based compensation tied to Amkor Technology, Inc. common stock.

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

Dividend equivalent units represent additional restricted stock units accrued when a dividend is paid. In this filing, 18.1563 DEUs were credited on March 31, 2026 on existing time-vested RSUs, and each DEU is subject to the same provisions as the underlying RSUs.

How many restricted stock units does the AMKR director hold after this transaction?

After the March 31, 2026 dividend equivalent unit accrual, the director holds 9,893.0573 restricted stock units. These RSUs, including the 18.1563 new DEUs, relate to Amkor Technology, Inc. common stock and represent equity-based compensation for the director.

Is the AMKR Form 4 transaction a market purchase or sale of common stock?

No, the Form 4 shows a grant-type acquisition coded “A,” not a market trade. The 18.1563 units are dividend equivalent units that convert into additional restricted stock units, rather than an open-market purchase or sale of Amkor common stock.

To which prior grant are the new dividend equivalent units tied for AMKR?

The 18.1563 dividend equivalent units accrued in connection with time-vested restricted stock units granted on May 15, 2025. Each DEU represents an additional RSU that follows the same vesting and other provisions as that original RSU grant.

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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^*

Tily Gil C.

(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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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, 2025. 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 Gil C. Tily	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)

Source: View Original Filing on SEC EDGAR