AMKOR TECHNOLOGY INC

Ticker: AMKR CUSIP: 031652100 Class: Common Stock

Cornerstone Planning Group LLC's Holding History (CIK: 0001822587)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 25 Value ($000) $1 Avg Close $35.54 Range $28.11 - $47.28

Q3 2025

Shares 25 Value ($000) $1 Avg Close $23.96 Range $20.48 - $30.29

Q2 2025

Shares 25 Value ($000) $1 Avg Close $18.29 Range $13.89 - $21.19

Q1 2025

Shares 138 Value ($000) $2 Avg Close $22.28 Range $17.44 - $27.31

Q4 2024

Shares 14 Value ($000) $0 Avg Close $26.77 Range $23.33 - $30.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	25	$1	$35.54	$28.11 - $47.28
Q3 2025	25	$1	$23.96	$20.48 - $30.29
Q2 2025	25	$1	$18.29	$13.89 - $21.19
Q1 2025	138	$2	$22.28	$17.44 - $27.31
Q4 2024	14	$0	$26.77	$23.33 - $30.71