Amkor EVP Rogers sells 5,000 shares after exercise

AMKOR TECHNOLOGY, INC. executive Mark N. Rogers, EVP & General Counsel, exercised options to acquire 5,000 shares of common stock at $7.40 per share and, on the same day, sold 5,000 shares in an open-market transaction at $59.43 per share.

Rhea-AI Filing Summary

AMKOR TECHNOLOGY, INC. executive Mark N. Rogers, EVP & General Counsel, exercised options to acquire 5,000 shares of common stock at $7.40 per share and, on the same day, sold 5,000 shares in an open-market transaction at $59.43 per share. Following these transactions, he directly holds 38,904 common shares and 90,000 employee stock options. The filing notes the sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025, indicating the sale timing was planned in advance.

Insider Trade Summary

Exercise and Sale: 5,000 shares ($260K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider ROGERS MARK N

Role EVP & General Counsel

Sold 5,000 shs ($297K)

Approx. gross sale proceeds $297K

Approx. exercise cost $37K

Approx. pre-tax spread $260K

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right-to-Buy)	5,000	$0.00	$0.00
Exercise	Common Stock	5,000	$7.40	$37K
Sale	Common Stock	5,000	$59.43	$297K

Holdings After Transaction: Employee Stock Option (Right-to-Buy) — 90,000 contracts (Direct); Common Stock — 38,904 shares (Direct)

Footnotes (2)

1. F1. 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. F2. 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.

Key Figures

Shares sold: 5,000 shares Sale price: $59.43 per share Options exercised: 5,000 shares +4 more

7 metrics

Shares sold 5,000 shares Open-market sale of common stock on April 16, 2026 at $59.43

Sale price $59.43 per share Average price for 5,000 AMKR shares sold

Options exercised 5,000 shares Common stock acquired via option exercise at $7.40

Exercise price $7.40 per share Strike price of employee stock option exercised

Shares held after 38,904 shares Direct common stock ownership after transactions

Options outstanding after 90,000 options Employee stock options remaining following 5,000-share exercise

Original option grant size 200,000 shares Employee stock option grant on June 10, 2019

Key Terms

Rule 10b5-1 trading plan, Employee Stock Option (Right-to-Buy), derivative security, open-market sale

4 terms

Rule 10b5-1 trading plan regulatory

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

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Employee Stock Option (Right-to-Buy) financial

"security_title: Employee Stock Option (Right-to-Buy) with underlying Common Stock"

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

open-market sale financial

"transaction_action: open-market sale of Common Stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

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

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

Mark N. Rogers reported exercising 5,000 stock options and selling 5,000 shares of AMKR common stock. He exercised options at $7.40 per share and sold shares at $59.43 per share, reflecting an exercise-and-sell pattern in a single trading day.

How many Amkor (AMKR) shares does Mark N. Rogers own after these transactions?

After the reported transactions, Mark N. Rogers directly holds 38,904 shares of Amkor common stock. He also holds 90,000 employee stock options outstanding, providing additional potential equity exposure beyond his current common share ownership position.

At what prices did the AMKR option exercise and share sale occur for Mark N. Rogers?

Rogers exercised 5,000 stock options at a strike price of $7.40 per share. He then sold 5,000 shares of Amkor common stock in the open market at an average price of $59.43 per share on the same transaction date.

Was the AMKR insider sale by Mark N. Rogers made under a Rule 10b5-1 plan?

Yes. The filing states the sale was effected under a Rule 10b5-1 trading plan adopted by Rogers on August 1, 2025. Such plans pre-schedule trades, indicating the sale’s timing was arranged in advance rather than being a discretionary decision.

What are the key terms of the Amkor (AMKR) stock option involved in this Form 4?

The employee stock option originally covered 200,000 shares of Amkor common stock, granted on June 10, 2019. It vested 25% after one year and the remaining shares in equal quarterly installments over four years, with an exercise price of $7.40 per share.

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

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Accepted by SEC EDGAR 04/20/2026 - 04:56 PM EDT 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^*

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)
04/16/2026

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	04/16/2026		M		5,000	A	$7.4	43,904	D
Common Stock	04/16/2026		S(1)		5,000	D	$59.43	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	04/16/2026		M			5,000	06/10/2020(2)	06/10/2029	Common Stock	5,000	$0	90,000	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	04/20/2026
	** 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)