Director at Amkor (NASDAQ: AMKR) sells 7,000 common shares

Rhea-AI Filing Summary

Amkor Technology director Winston J. Churchill reported an open-market sale of 7,000 shares of the company’s Common Stock. The shares were sold at an average price of $76.45 per share. After this transaction, he directly holds 18,888 shares of Amkor Technology.

Insider Trade Summary

Net Seller: 7,000 shares ($535,150)

Net Sell 1 txn

Insider CHURCHILL WINSTON J

Role null

Sold 7,000 shs ($535K)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,000	$76.45	$535K

Holdings After Transaction: Common Stock — 18,888 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 7,000 shares Sale price: $76.45 per share Post-transaction holdings: 18,888 shares +1 more

4 metrics

Shares sold 7,000 shares Open-market sale of Amkor Technology Common Stock

Sale price $76.45 per share Average price for 7,000 shares sold

Post-transaction holdings 18,888 shares Direct ownership after reported sale

Transaction code S Sale in open market or private transaction

Key Terms

Common Stock, open-market sale, Form 4, transaction code "S", +1 more

5 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open-market sale financial

"transaction_action: "open-market sale""

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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

transaction code "S" regulatory

"transaction_code: "S""

direct ownership financial

"ownership_type: "direct" and ownership_code: "D""

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).

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^*

CHURCHILL WINSTON J

(Last) (First) (Middle)

500 SE MIZNER BLVD.

APT 305A

(Street)

BOCA RATON FLORIDA 33432-6083

(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)
05/05/2026

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	05/05/2026		S		7,000	D	$76.45	18,888	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

Explanation of Responses:

Remarks:

	/s/ Mark N. Rogers, Attorney-in-Fact for Winston J. Churchill	05/07/2026
	** 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 Amkor Technology (AMKR) report on this Form 4?

Amkor Technology reported that director Winston J. Churchill completed an open-market sale of 7,000 shares of Common Stock at an average price of $76.45 per share, as disclosed in the Form 4 insider filing.

How many Amkor Technology (AMKR) shares did Winston J. Churchill sell?

Winston J. Churchill sold 7,000 shares of Amkor Technology Common Stock. The transaction was reported as an open-market sale, meaning the shares were sold through normal trading on the market rather than via a private or off-market transaction.

At what price were Winston J. Churchill’s Amkor (AMKR) shares sold?

The 7,000 Amkor Technology shares sold by Winston J. Churchill were transacted at an average price of $76.45 per share. This pricing reflects the execution price reported for the open-market sale in the Form 4 filing.

How many Amkor Technology (AMKR) shares does Winston J. Churchill own after the sale?

Following the sale, Winston J. Churchill directly owns 18,888 shares of Amkor Technology Common Stock. This post-transaction holding reflects his remaining direct ownership as reported in the insider Form 4 filing.

What is the nature of Winston J. Churchill’s ownership in Amkor Technology (AMKR) after the transaction?

After the transaction, Winston J. Churchill’s reported 18,888 Amkor Technology shares are held as direct ownership. The Form 4 lists the ownership type as “D” for direct, indicating the shares are not held through an intermediary entity.