Amkor (NASDAQ: AMKR) director receives dividend-equivalent RSU award

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. director Gil C. Tily reported an automatic equity compensation adjustment. He acquired 2.5166 dividend equivalent restricted stock units (RSUs) on June 23, 2026, tied to a cash dividend and existing time-vested RSUs granted on May 13, 2026, bringing his RSU holdings to 2,615.5166 units.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Tily Gil C.

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2.517	$0.00	--

Holdings After Transaction: Restricted Stock Units — 2,615.517 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs acquired: 2.5166 units Total RSUs after transaction: 2,615.5166 units Transaction code: A (grant, award, or other acquisition) +1 more

4 metrics

RSUs acquired 2.5166 units Dividend equivalent RSUs credited on June 23, 2026

Total RSUs after transaction 2,615.5166 units Time-vested RSU holdings following June 23, 2026 award

Transaction code A (grant, award, or other acquisition) Characterizes the RSU acquisition as a compensation grant

Underlying common shares 2.5166 shares Common stock underlying the new restricted stock units

Key Terms

Restricted Stock Units, Dividend equivalent units, time-vested restricted stock units

3 terms

Restricted Stock Units financial

"Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc."

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 June 23, 2026 with respect to time-vested restricted stock units ("RSUs")."

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. granted to the Reporting Person on May 13, 2026."

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/25/2026 - 04:48 PM Accepted by SEC EDGAR 06/25/2026 - 04:47 PM

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)
06/23/2026

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⁾	06/23/2026		A		2.5166		⁽¹⁾	⁽¹⁾	Common Stock	2.5166	$0	2,615.5166	D

Explanation of Responses:

1. Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend on June 23, 2026 with respect to time-vested restricted stock units ("RSUs") of Amkor Technology, Inc. (the "Issuer") granted to the Reporting Person on May 13, 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 Gil C. Tily	06/25/2026
	** 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

FAQ

What insider transaction did AMKR director Gil C. Tily report?

Gil C. Tily reported an acquisition of 2.5166 dividend equivalent restricted stock units. These units were credited automatically in connection with a dividend, increasing his time-vested RSU holdings in Amkor Technology to a total of 2,615.5166 units.

Were Gil C. Tily’s AMKR transactions open-market buys or sells?

The reported AMKR transaction was not an open-market trade. It reflects a grant-type acquisition (code A) of 2.5166 dividend equivalent restricted stock units credited as compensation, rather than discretionary buying or selling of Amkor Technology common stock.

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

Dividend equivalent units are additional RSUs credited when a cash dividend is paid. For AMKR, each DEU represents one extra restricted stock unit with the same vesting terms as the original RSUs to which the DEU relates, effectively reinvesting dividends into equity awards.

How many restricted stock units does Gil C. Tily hold after this AMKR transaction?

After receiving 2.5166 dividend equivalent RSUs, Gil C. Tily holds 2,615.5166 restricted stock units in Amkor Technology. This total reflects his time-vested RSU grant from May 13, 2026 plus the additional units credited on the June 23, 2026 dividend date.

What does transaction code A mean in the AMKR Form 4?

In the AMKR Form 4, transaction code A indicates a grant, award, or other acquisition. Here, it signifies that 2.5166 restricted stock units were awarded as dividend equivalent units, not purchased on the market, and form part of Gil C. Tily’s equity compensation.