Amkor director granted 2,613 RSUs

Amkor Technology director Roger Anthony Carolin received a grant of 2,613 restricted stock units (RSUs) on May 13, 2026.

Rhea-AI Filing Summary

Amkor Technology director Roger Anthony Carolin received a grant of 2,613 restricted stock units (RSUs) on May 13, 2026. These RSUs were awarded at no cash cost as part of his compensation for board service under the company’s 2021 Equity Incentive Plan.

The RSUs convert into Amkor common stock on a one-for-one basis. They will vest in full on the earlier of the first anniversary of the grant date or the first annual meeting of stockholders following that date. After this grant, he holds 2,613 RSUs directly.

Insider Trade Summary

Grant/Award: 2,613 shares

Grant/Award 1 txn

Insider Carolin Roger Anthony

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2,613	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 2,613 contracts (Direct)

Footnotes (1)

1. F1. Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

Key Figures

RSUs granted: 2,613 units Total RSUs after grant: 2,613 units Grant price: $0.0000 per unit +2 more

5 metrics

RSUs granted 2,613 units Restricted stock units granted on May 13, 2026

Total RSUs after grant 2,613 units Holdings following reported transaction

Grant price $0.0000 per unit Awarded for board service, no cash consideration

Conversion ratio 1 RSU = 1 share Each RSU convertible into one Amkor common share

Grant date May 13, 2026 RSUs granted under 2021 Equity Incentive Plan

Key Terms

Restricted Stock Units, 2021 Equity Incentive Plan, vest in full, one-for-one basis

4 terms

Restricted Stock Units financial

"Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026"

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.

2021 Equity Incentive Plan financial

"granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan"

vest in full financial

"will vest in full on the earlier of the first anniversary of the Grant Date"

one-for-one basis financial

"the RSUs may be converted into common stock of the Issuer on a one-for-one basis"

FAQ

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

What did Amkor Technology (AMKR) director Roger Anthony Carolin receive in this Form 4?

He received 2,613 restricted stock units (RSUs) as equity compensation. The grant is part of Amkor’s 2021 Equity Incentive Plan and reflects non-cash compensation for his service as a director of the company.

When do the 2,613 RSUs granted to the AMKR director vest?

The RSUs vest in full on the earlier of the first anniversary of May 13, 2026 or the first annual meeting of stockholders after that date. This single-vesting schedule ties the award to continued board service over that period.

How are the AMKR director’s RSUs settled once they vest?

Each RSU may be converted into one share of Amkor common stock upon vesting. This one-for-one conversion means 2,613 RSUs can become 2,613 common shares if vesting conditions under the plan and award agreement are met.

Did the AMKR director pay cash for the 2,613 RSUs reported?

No cash consideration was paid for these RSUs. They were awarded for the reporting person’s service as a director, reflecting standard equity-based compensation rather than an open-market purchase of Amkor shares.

What is the ownership position after this RSU grant for the AMKR director?

Following this transaction, the reporting person holds 2,613 RSUs directly. These units represent the right to receive the same number of Amkor common shares in the future if the vesting conditions are satisfied.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 04:43 PM Learn about SEC filing dates

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 PENNSYLVANIA 19355

(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)
05/13/2026

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)	05/13/2026		A		2,613		(1)	(1)	Common Stock	2,613	$0	2,613	D

Explanation of Responses:

1. Represents shares of common stock underlying time-vested restricted stock units ("RSUs") granted on May 13, 2026 (the "Grant Date") pursuant to the Amkor Technology, Inc. (the "Issuer") 2021 Equity Incentive Plan. Subject to the terms and conditions of the applicable award agreement, the RSUs may be converted into common stock of the Issuer on a one-for-one basis and will vest in full on the earlier of the first anniversary of the Grant Date or the date of the Issuer's first annual meeting of stockholders immediately following the Grant Date. The RSUs were awarded for no consideration other than the Reporting Person's service as a director of the Issuer.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin	05/15/2026
	** 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)