Susan Y. Kim - Director, Member of 10% owner group (6), 10%+ Owner at AMKOR TECHNOLOGY, INC.

Issuer-level insider activity

Role: Director, Member of 10% owner group (6), 10%+ Owner
Issuer symbol: AMKR on Nasdaq
Entity type: Individual
SEC filing history: Open SEC filing history

Past-year transaction volume for Susan Y. Kim in AMKOR TECHNOLOGY, INC.

Buys

Open market

Shares: +441,589
Avg price: $21.85
Total value: +$9,648,720

Sells

Open market

Shares
Avg price
Total value

Net

Past year

Shares: +441,589
Share %: 100%
Total value: +$9,648,720

Reported holdings for Susan Y. Kim in AMKOR TECHNOLOGY, INC.

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 19,484,809
Estimated value: $877,400,949
Report date: 13 May 2026
Price: $45.03
Ownership: By Sujochil, LP

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 6,110,494
Estimated value: $275,155,544
Report date: 13 May 2026
Price: $45.03
Ownership: Direct

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 3,789,479
Estimated value: $170,640,239
Report date: 13 May 2026
Price: $45.03
Ownership: By Sujoda Investments, LP

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 3,713,610
Estimated value: $167,223,858
Report date: 13 May 2026
Price: $45.03
Ownership: By trusts (excl. GRATs)

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 3,244,594
Estimated value: $146,104,067
Report date: 13 May 2026
Price: $45.03
Ownership: 2025 Grantor Retained Annuity Trust No. 1 of James J. Kim

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 2,538,000
Estimated value: $114,286,140
Report date: 13 May 2026
Price: $45.03
Ownership: 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. Kim

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 1,235,000
Estimated value: $55,612,050
Report date: 13 May 2026
Price: $45.03
Ownership: By James J. Kim 2024 GRAT dtd. 8/5/24

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 1,124,000
Estimated value: $50,613,720
Report date: 13 May 2026
Price: $45.03
Ownership: By own GRATs

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 895,000
Estimated value: $40,301,850
Report date: 13 May 2026
Price: $45.03
Ownership: By Agnes C. Kim 2024 GRAT dtd. 8/5/24

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Restricted Stock Units
Shares / value: 2,613
Estimated value: $40,976
Report date: 13 May 2026
Price: $6.81
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Common Stock
Shares / value: 0
Estimated value: $0
Report date: 31 Mar 2026
Price: $39.48
Ownership: By Kim Capital Partners - KCP, LLC

Form 4 holding Director, Member of 10% owner group (6), 10%+ Owner

AMKOR TECHNOLOGY, INC.

Security class: Director stock option (right to buy)
Shares / value: 0
Estimated value
Report date: 07 Apr 2026
Price
Ownership: Direct
Underlying class: Common Stock
Underlying amount

Transaction history for Susan Y. Kim in AMKOR TECHNOLOGY, INC.

Sym	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares after	Date	Ownership

^* marks a reported price that did not pass the local price check.