COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

GRANDFIELD & DODD, LLC's Holding History (CIK: 0001308016)

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

Q4 2025

Shares 4,820 Value ($000) $4,156 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 4,837 Value ($000) $4,477 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 4,883 Value ($000) $4,834 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 4,662 Value ($000) $4,409 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 4,697 Value ($000) $4,304 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 4,742 Value ($000) $4,204 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 5,197 Value ($000) $4,418 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 5,212 Value ($000) $3,819 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 5,237 Value ($000) $3,457 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 5,185 Value ($000) $2,929 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 5,190 Value ($000) $2,794 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 4,918 Value ($000) $2,444 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 4,938 Value ($000) $2,254 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 5,112 Value ($000) $2,410 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 5,112 Value ($000) $2,450 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 5,112 Value ($000) $2,940 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 5,177 Value ($000) $2,940 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 5,251 Value ($000) $2,360 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 5,061 Value ($000) $2,000 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 5,005 Value ($000) $1,760 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 5,005 Value ($000) $1,890 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 5,040 Value ($000) $1,790 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 5,018 Value ($000) $1,520 Avg Close $279.18 Range $257.36 - $295.59

Q4 2014

Shares 10,055 Value ($000) $1,425 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 10,085 Value ($000) $1,264 Avg Close $97.13 Range $92.09 - $102.72

Q3 2013

Shares 14,095 Value ($000) $1,623 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 13,945 Value ($000) $1,542 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,820	$4,156	$905.73	$844.06 - $962.64
Q3 2025	4,837	$4,477	$956.70	$902.01 - $997.89
Q2 2025	4,883	$4,834	$990.72	$868.14 - $1064.10
Q1 2025	4,662	$4,409	$970.56	$877.95 - $1073.82
Q4 2024	4,697	$4,304	$922.64	$861.51 - $1003.02
Q3 2024	4,742	$4,204	$861.91	$787.84 - $917.81
Q2 2024	5,197	$4,418	$773.82	$690.64 - $867.04
Q1 2024	5,212	$3,819	$706.75	$633.49 - $779.59
Q4 2023	5,237	$3,457	$573.49	$521.47 - $661.25
Q3 2023	5,185	$2,929	$532.21	$505.45 - $552.31
Q2 2023	5,190	$2,794	$487.14	$459.09 - $519.84
Q1 2023	4,918	$2,444	$471.27	$429.88 - $509.61
Q4 2022	4,938	$2,254	$468.77	$430.19 - $520.75
Q3 2022	5,112	$2,410	$498.08	$444.08 - $541.06
Q2 2022	5,112	$2,450	$484.91	$388.78 - $584.62
Q1 2022	5,112	$2,940	$500.83	$447.15 - $559.84
Q4 2021	5,177	$2,940	$488.10	$415.17 - $544.86
Q3 2021	5,251	$2,360	$418.22	$374.22 - $447.84
Q2 2021	5,061	$2,000	$359.04	$333.36 - $380.48
Q1 2021	5,005	$1,760	$329.77	$291.05 - $361.01
Q4 2020	5,005	$1,890	$347.39	$324.71 - $367.18
Q3 2020	5,040	$1,790	$309.06	$276.17 - $334.67
Q2 2020	5,018	$1,520	$279.18	$257.36 - $295.59
Q4 2014	10,055	$1,425	$109.42	$98.12 - $118.34
Q3 2014	10,085	$1,264	$97.13	$92.09 - $102.72
Q3 2013	14,095	$1,623	$91.64	$87.25 - $95.29
Q2 2013	13,945	$1,542	$86.56	$81.59 - $91.78