Amkor (NASDAQ: AMKR) director adds RSU dividend units

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. director MaryFrances McCourt reported additional stock-based compensation in the form of dividend equivalent units on her restricted stock units. On June 23, 2026 she was credited 2.5166 RSUs tied to a May 16, 2023 grant and 8.1651 RSUs tied to a May 13, 2026 grant, each on a one-for-one basis with Amkor common stock. These credits increased her respective RSU balances to 2,615.5166 units and 8,903.9532 units. The transactions are awards, not open‑market purchases or sales, and involved no cash exercise price.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider McCourt MaryFrances

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	8.165	$0.00	--
Grant/Award	Restricted Stock Units	2.517	$0.00	--

Holdings After Transaction: Restricted Stock Units — 8,903.953 shares (Direct, null)

Footnotes (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 16, 2023. Each DEU represents an additional RSU subject to the same provisions as the RSU with respect to which the DEU was accrued. Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of 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.

Key Figures

Dividend equivalent RSUs (2023 grant): 2.5166 RSUs Dividend equivalent RSUs (2026 grant): 8.1651 RSUs RSU balance after 2023 DEUs: 2,615.5166 RSUs +2 more

5 metrics

Dividend equivalent RSUs (2023 grant) 2.5166 RSUs Credited June 23, 2026 on May 16, 2023 RSU grant

Dividend equivalent RSUs (2026 grant) 8.1651 RSUs Credited June 23, 2026 on May 13, 2026 RSU grant

RSU balance after 2023 DEUs 2,615.5166 RSUs Total RSUs following transaction on one grant

RSU balance after 2026 DEUs 8,903.9532 RSUs Total RSUs following transaction on another grant

Dividend date June 23, 2026 Date dividend was paid and DEUs accrued

Key Terms

Restricted Stock Units, dividend equivalent units, DEUs, time-vested restricted stock units, +1 more

5 terms

Restricted Stock Units financial

"Represents dividend equivalent units ("DEUs") accrued upon the payment of a dividend ... 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 June 23 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.

DEUs financial

"Each DEU represents an additional RSU subject to the same provisions as the RSU"

time-vested restricted stock units financial

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

RSUs financial

"Represents DEUs accrued upon the payment of a dividend on June 23, 2026 with respect to RSUs of the Issuer"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/25/2026 - 04:42 PM Accepted by SEC EDGAR 06/25/2026 - 04:42 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^*

McCourt MaryFrances

(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		8.1651		⁽¹⁾	⁽¹⁾	Common Stock	8.1651	$0	8,903.9532	D
Restricted Stock Units	⁽²⁾	06/23/2026		A		2.5166		⁽²⁾	⁽²⁾	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 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 23, 2026 with respect to RSUs of 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 MaryFrances McCourt	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 activity did Amkor (AMKR) report for MaryFrances McCourt?

Amkor reported that director MaryFrances McCourt received small dividend equivalent awards of restricted stock units on June 23, 2026. These awards were tied to existing RSU grants from 2023 and 2026 rather than open-market stock purchases or sales.

How many new RSUs did MaryFrances McCourt receive at Amkor (AMKR)?

She received 2.5166 restricted stock units linked to a May 16, 2023 grant and 8.1651 units linked to a May 13, 2026 grant. Each unit represents one share of Amkor common stock under the company’s existing RSU award terms.

Why did Amkor (AMKR) grant dividend equivalent RSUs to its director?

The additional RSUs represent dividend equivalent units credited when Amkor paid a dividend on June 23, 2026. They compensate the director for dividends on unvested RSUs, mirroring what a shareholder would receive on the underlying common stock.

Did the Amkor (AMKR) director buy or sell shares in the market?

No open-market trades occurred in this filing. The Form 4 shows award-type acquisitions of dividend equivalent restricted stock units, with no reported stock sales or cash purchases by director MaryFrances McCourt on June 23, 2026.

What are MaryFrances McCourt’s RSU balances after these Amkor (AMKR) transactions?

After the June 23, 2026 dividend equivalent accruals, one RSU grant stands at 2,615.5166 units and another at 8,903.9532 units. Each unit corresponds to one share of Amkor common stock under the award agreements.