COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

Washington Trust Bank's Holding History (CIK: 0000861787)

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

Q4 2025

Shares 22,417 Value ($000) $19,331 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 22,427 Value ($000) $20,759 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 22,722 Value ($000) $22,493 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 22,748 Value ($000) $21,515 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 23,683 Value ($000) $21,700 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 25,179 Value ($000) $22,322 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 27,240 Value ($000) $23,154 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 28,560 Value ($000) $20,924 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 30,939 Value ($000) $20,422 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 32,232 Value ($000) $18,210 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 32,607 Value ($000) $17,555 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 32,968 Value ($000) $16,381 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 30,790 Value ($000) $14 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 30,758 Value ($000) $14,526 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 31,190 Value ($000) $14,949 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 31,963 Value ($000) $18,406 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 34,993 Value ($000) $19,866 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 36,180 Value ($000) $16,258 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 35,906 Value ($000) $14,207 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 36,076 Value ($000) $12,716 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 35,014 Value ($000) $13,192 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 35,021 Value ($000) $12,432 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 36,607 Value ($000) $11,099 Avg Close $279.18 Range $257.36 - $295.59

Q1 2020

Shares 38,478 Value ($000) $10,971 Avg Close $277.78 Range $248.54 - $298.00

Q4 2019

Shares 41,295 Value ($000) $12,137 Avg Close $271.52 Range $256.90 - $280.77

Q3 2019

Shares 42,477 Value ($000) $12,238 Avg Close $256.34 Range $238.19 - $280.38

Q2 2019

Shares 44,338 Value ($000) $11,717 Avg Close $226.60 Range $212.14 - $244.81

Q1 2019

Shares 46,705 Value ($000) $11,310 Avg Close $198.35 Range $180.94 - $220.09

Q4 2018

Shares 47,081 Value ($000) $9,590 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 47,613 Value ($000) $11,183 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 52,476 Value ($000) $10,966 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 51,971 Value ($000) $9,793 Avg Close $169.26 Range $157.50 - $179.09

Q4 2017

Shares 53,331 Value ($000) $9,926 Avg Close $154.45 Range $137.67 - $175.03

Q3 2017

Shares 45,570 Value ($000) $7,486 Avg Close $140.12 Range $133.57 - $147.68

Q2 2017

Shares 25,884 Value ($000) $4,140 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 20,360 Value ($000) $3,414 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 19,375 Value ($000) $3,102 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 19,403 Value ($000) $2,959 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 19,857 Value ($000) $3,118 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 19,369 Value ($000) $3,052 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 18,541 Value ($000) $2,994 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 18,826 Value ($000) $2,722 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 18,176 Value ($000) $2,455 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 17,375 Value ($000) $2,632 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 16,512 Value ($000) $2,341 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 15,400 Value ($000) $1,930 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 40,956 Value ($000) $4,716 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 41,876 Value ($000) $4,677 Avg Close $91.29 Range $87.26 - $95.07

Q3 2013

Shares 37,472 Value ($000) $4,315 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 35,055 Value ($000) $3,876 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	22,417	$19,331	$905.73	$844.06 - $962.64
Q3 2025	22,427	$20,759	$956.70	$902.01 - $997.89
Q2 2025	22,722	$22,493	$990.72	$868.14 - $1064.10
Q1 2025	22,748	$21,515	$970.56	$877.95 - $1073.82
Q4 2024	23,683	$21,700	$922.64	$861.51 - $1003.02
Q3 2024	25,179	$22,322	$861.91	$787.84 - $917.81
Q2 2024	27,240	$23,154	$773.82	$690.64 - $867.04
Q1 2024	28,560	$20,924	$706.75	$633.49 - $779.59
Q4 2023	30,939	$20,422	$573.49	$521.47 - $661.25
Q3 2023	32,232	$18,210	$532.21	$505.45 - $552.31
Q2 2023	32,607	$17,555	$487.14	$459.09 - $519.84
Q1 2023	32,968	$16,381	$471.27	$429.88 - $509.61
Q4 2022	30,790	$14	$468.77	$430.19 - $520.75
Q3 2022	30,758	$14,526	$498.08	$444.08 - $541.06
Q2 2022	31,190	$14,949	$484.91	$388.78 - $584.62
Q1 2022	31,963	$18,406	$500.83	$447.15 - $559.84
Q4 2021	34,993	$19,866	$488.10	$415.17 - $544.86
Q3 2021	36,180	$16,258	$418.22	$374.22 - $447.84
Q2 2021	35,906	$14,207	$359.04	$333.36 - $380.48
Q1 2021	36,076	$12,716	$329.77	$291.05 - $361.01
Q4 2020	35,014	$13,192	$347.39	$324.71 - $367.18
Q3 2020	35,021	$12,432	$309.06	$276.17 - $334.67
Q2 2020	36,607	$11,099	$279.18	$257.36 - $295.59
Q1 2020	38,478	$10,971	$277.78	$248.54 - $298.00
Q4 2019	41,295	$12,137	$271.52	$256.90 - $280.77
Q3 2019	42,477	$12,238	$256.34	$238.19 - $280.38
Q2 2019	44,338	$11,717	$226.60	$212.14 - $244.81
Q1 2019	46,705	$11,310	$198.35	$180.94 - $220.09
Q4 2018	47,081	$9,590	$201.98	$171.58 - $217.57
Q3 2018	47,613	$11,183	$203.13	$185.65 - $221.43
Q2 2018	52,476	$10,966	$177.76	$162.55 - $191.42
Q1 2018	51,971	$9,793	$169.26	$157.50 - $179.09
Q4 2017	53,331	$9,926	$154.45	$137.67 - $175.03
Q3 2017	45,570	$7,486	$140.12	$133.57 - $147.68
Q2 2017	25,884	$4,140	$150.98	$139.41 - $162.71
Q1 2017	20,360	$3,414	$142.87	$134.91 - $152.51
Q4 2016	19,375	$3,102	$129.79	$120.95 - $140.39
Q3 2016	19,403	$2,959	$136.95	$124.90 - $143.90
Q2 2016	19,857	$3,118	$128.04	$117.26 - $134.37
Q1 2016	19,369	$3,052	$127.74	$119.17 - $135.67
Q4 2015	18,541	$2,994	$132.84	$119.34 - $142.82
Q3 2015	18,826	$2,722	$119.60	$98.22 - $123.53
Q2 2015	18,176	$2,455	$120.23	$112.77 - $127.67
Q1 2015	17,375	$2,632	$120.91	$111.40 - $128.73
Q4 2014	16,512	$2,341	$109.42	$98.12 - $118.34
Q3 2014	15,400	$1,930	$97.13	$92.09 - $102.72
Q2 2014	40,956	$4,716	$91.81	$88.18 - $95.25
Q1 2014	41,876	$4,677	$91.29	$87.26 - $95.07
Q3 2013	37,472	$4,315	$91.64	$87.25 - $95.29
Q2 2013	35,055	$3,876	$86.56	$81.59 - $91.78