Amkor Technology director exercises 20,000-share option

The option had vested in full in 2019, and the reported direct common-stock position afterward was 114,409 shares.

Available on EDGAR 11/09/2026 - 04:36 PM EST Accepted by SEC EDGAR 11/09/2026 - 04:36 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

AMKOR Technology, Inc. director Roger Anthony Carolin exercised a stock option for 20,000 common shares on November 5, 2026, at an exercise price of $8.51 per share. The option was granted May 1, 2018, and vested in full May 1, 2019. After the exercise, Carolin directly held 114,409 common shares; the exercised option position was reported as zero.

Insider Trade Summary

20,000 shares exercised/converted

Exercise 2 txns

Insider Carolin Roger Anthony

Role Director

Type	Security	Shares	Price	Value
Exercise	Director Stock Option (Right to Buy) F1	20,000	$0.00	$0.00
Exercise	Common Stock	20,000	$8.51	$170K

Holdings After Transaction: Director Stock Option (Right to Buy) — 0 options (Direct); Common Stock — 114,409 shares (Direct)

Holdings Before and After: Director Stock Option (Right to Buy), 20,000 to 0 options (Direct); Common Stock, 94,409 to 114,409 shares (Direct)

Footnotes (1)

1. F1. This stock option to acquire 20,000 shares of Amkor Technology, Inc. Common Stock was granted on May 1, 2018 and vested in full on May 1, 2019.

Key Figures

Common shares acquired: 20,000 shares Exercise price: $8.51 per share Direct common shares held after exercise: 114,409 shares +3 more

6 metrics

Common shares acquired 20,000 shares Through the option exercise on November 5, 2026

Exercise price $8.51 per share Option exercised on November 5, 2026

Direct common shares held after exercise 114,409 shares Following the November 5, 2026 transaction

Option shares following exercise 0 shares Reported after the November 5, 2026 transaction

Option grant date May 1, 2018 Stock option for 20,000 common shares

Option vesting date May 1, 2019 Option vested in full

Key Terms

Director Stock Option (Right to Buy), vested in full, exercise or conversion of derivative security

3 terms

Director Stock Option (Right to Buy) financial

"Director Stock Option (Right to Buy)"

vested in full financial

"vested in full on May 1, 2019"

exercise or conversion of derivative security technical

"Exercise or conversion of derivative security"

FAQ

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

How many AMKR shares did Roger Anthony Carolin acquire through the option exercise?

Roger Anthony Carolin acquired 20,000 shares of AMKOR common stock through the exercise on November 5, 2026, at an exercise price of $8.51 per share. The option was granted May 1, 2018, and vested in full on May 1, 2019; his direct common-stock holdings afterward were 114,409 shares.

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

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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^*

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)
11/05/2026

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
Common Stock	11/05/2026		M		20,000	A	$8.51	114,409	D

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
Director Stock Option (Right to Buy)	$8.51	11/05/2026		M			20,000	05/01/2019(1)	05/01/2028	Common Stock	20,000	$0	0	D

Explanation of Responses:

1. This stock option to acquire 20,000 shares of Amkor Technology, Inc. Common Stock was granted on May 1, 2018 and vested in full on May 1, 2019.

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Roger A. Carolin	11/09/2026
	** 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)