Guillaume Marie Jean Rutten - 30 Sep 2025 Form 4 Insider Report for AMKOR TECHNOLOGY, INC. (AMKR)

Role
President and CEO, Director
Signature
/s/ Mark N. Rogers, Attorney-in-Fact for Guillaume Marie Jean Rutten
Issuer symbol
AMKR
Transactions as of
30 Sep 2025
Transactions value $
$0
Form type
4
Filing time
02 Oct 2025, 16:35:15 UTC
Previous filing
23 Sep 2025
Next filing
17 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Rutten Guillaume Marie Jean President and CEO, Director 2045 EAST INNOVATION CIRCLE, TEMPE /s/ Mark N. Rogers, Attorney-in-Fact for Guillaume Marie Jean Rutten 02 Oct 2025 0001596796

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMKR Common Stock Options Exercise $0 +8.69K +2.43% $0.00 367K 30 Sep 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 Restricted Stock Units Options Exercise $0 -8.69K -25% $0.00 26.1K 30 Sep 2025 Common Stock 8.69K $0.00 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On February 20, 2025, the Reporting Person was granted 43,459 restricted stock units which vest in five equal quarterly installments on each of June 30, 2025, September 30, 2025, December 31, 2025, March 31, 2026, and June 30, 2026, such that 100% will be vested on June 30, 2026.