Amkor (NASDAQ: AMKR) EVP Mark Rogers exercises options and sells 5,000 shares

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers exercised stock options and sold shares in a planned transaction. He exercised options for 5,000 shares of common stock at $7.40 per share and on the same day sold 5,000 shares at $44.54 per share in an open-market trade. The filing states the sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. Following these transactions, Rogers directly holds 38,904 shares of common stock.

Insights

Insider trading and governance analyst

Routine option exercise and planned sale totaling 5,000 shares.

Executive vice president and general counsel Mark N. Rogers exercised options for 5,000 shares at an exercise price of $7.40 and immediately sold 5,000 shares at $44.54 per share. This is a classic exercise-and-sell pattern converting options into cash.

The filing notes the sale was effected under a Rule 10b5-1 trading plan adopted on August 1, 2025. Such plans are established in advance, so the timing reflects a preset schedule rather than a discretionary market-timing decision. After the sale, Rogers continues to hold 38,904 common shares directly.

This activity represents a modest net sale of 5,000 shares based on the transaction summary, with no remaining derivative positions disclosed in the derivative summary. It appears to be routine executive equity compensation management rather than a transformational ownership change.

Insider Trade Summary 10b5-1

Net Seller: 5,000 shares ($222,700)

Net Sell 3 txns

Insider ROGERS MARK N

Role EVP & General Counsel

Sold 5,000 shs ($223K)

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right-to-Buy)	5,000	$0.00	--
Exercise	Common Stock	5,000	$7.40	$37K
Sale	Common Stock	5,000	$44.54	$223K

Holdings After Transaction: Employee Stock Option (Right-to-Buy) — 95,000 shares (Direct); Common Stock — 43,904 shares (Direct)

Footnotes (1)

1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025. This stock option (the "Option") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the "Option Shares") was granted on June 10, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.

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Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

ROGERS MARK N

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & General Counsel

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		M		5,000	A	$7.4	43,904	D
Common Stock	03/16/2026		S(1)		5,000	D	$44.54	38,904	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
Employee Stock Option (Right-to-Buy)	$7.4	03/16/2026		M			5,000	06/10/2020(2)	06/10/2029(2)	Common Stock	5,000	$0	95,000	D

Explanation of Responses:

1. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.

2. This stock option (the "Option") to acquire 200,000 shares of Amkor Technology, Inc. common stock (the "Option Shares") was granted on June 10, 2019 (the "Option Grant Date") and vested over four years as follows: (i) with respect to 25% of the Option Shares, on the first anniversary of the Option Grant Date; and (ii) with respect to the remainder of the Option Shares, in equal quarterly installments thereafter, such that 100% of the Option vested on the fourth anniversary of the Option Grant Date.

Remarks:

	/s/ Mark N. Rogers	03/18/2026
	** 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)

FAQ

What insider transaction did AMKR executive Mark N. Rogers report on this Form 4?

Mark N. Rogers reported exercising options for 5,000 AMKR shares at $7.40 and selling 5,000 common shares at $44.54. This combined exercise-and-sale converted derivative compensation into cash while leaving him with 38,904 common shares held directly after the transactions.

Was the AMKR insider stock sale by Mark N. Rogers pre-planned under Rule 10b5-1?

Yes. The filing states the 5,000-share sale was effected under a Rule 10b5-1 trading plan adopted on August 1, 2025. Such plans schedule trades in advance, reducing the significance of transaction timing as a signal of the insider’s current market outlook.

How many AMKR shares did Mark N. Rogers hold after the reported Form 4 transactions?

After the reported transactions, Mark N. Rogers directly held 38,904 shares of Amkor Technology common stock. This figure reflects his position following the 5,000-share option exercise and the same-day 5,000-share open-market sale disclosed in the Form 4 filing.

What prices were involved in Mark N. Rogers’ AMKR option exercise and share sale?

Rogers exercised stock options at an exercise price of $7.40 per share for 5,000 AMKR shares and sold 5,000 common shares at a sale price of $44.54 per share. These prices highlight the spread between his option strike price and the prevailing market sale price.

What type of securities did Mark N. Rogers transact in this AMKR Form 4 filing?

He exercised an employee stock option, a derivative security giving the right to buy Amkor common stock, for 5,000 underlying shares. He then sold 5,000 shares of common stock in an open-market transaction, as indicated by transaction code “S” and its description in the filing.