COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

Mattson Financial Services, LLC's Holding History (CIK: 0002034595)

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

Q4 2025

Shares 2,353 Value ($000) $2,029 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 2,328 Value ($000) $2,155 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 2,250 Value ($000) $2,227 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 2,283 Value ($000) $2,159 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 2,276 Value ($000) $2,018 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 2,631 Value ($000) $2,236 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 2,647 Value ($000) $2,250 Avg Close $773.82 Range $690.64 - $867.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,353	$2,029	$905.73	$844.06 - $962.64
Q3 2025	2,328	$2,155	$956.70	$902.01 - $997.89
Q2 2025	2,250	$2,227	$990.72	$868.14 - $1064.10
Q1 2025	2,283	$2,159	$970.56	$877.95 - $1073.82
Q4 2024	2,276	$2,018	$922.64	$861.51 - $1003.02
Q3 2024	2,631	$2,236	$861.91	$787.84 - $917.81
Q2 2024	2,647	$2,250	$773.82	$690.64 - $867.04