CHURCHILL WINSTON J - 15 Dec 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
Director
Signature
/s/ Mark N. Rogers, Attorney-in-Fact for Winston J. Churchill
Issuer symbol
AMKR
Transactions as of
15 Dec 2025
Net transactions value
-$124,500
Form type
4
Filing time
17 Dec 2025, 16:09:46 UTC
Previous filing
25 Sep 2025
Next filing
29 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
CHURCHILL WINSTON J Director 500 SE MIZNER BLVD., APT 305A, BOCA RATON /s/ Mark N. Rogers, Attorney-in-Fact for Winston J. Churchill 17 Dec 2025 0000923792

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Options Exercise $96,950 +5,000 +19% $19.39 30,888 15 Dec 2025 Direct
transaction AMKR Common Stock Sale $221,450 -5,000 -16% $44.29 25,888 15 Dec 2025 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMKR Director Stock Option (Right-to-Buy) Options Exercise $0 -5,000 -25% $0.000000 15,000 15 Dec 2025 Common Stock 5,000 $19.39 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This stock option to acquire 20,000 shares of Common Stock of Amkor Technology, Inc. was granted on May 18, 2021 and vested in full on May 17, 2022.