COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q3 2025

Shares 92,163 Value ($000) $85,309 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 144,626 Value ($000) $143,171 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 148,156 Value ($000) $140,123 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 148,514 Value ($000) $136,079 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 147,816 Value ($000) $131,042 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 145,392 Value ($000) $123,582 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 169,256 Value ($000) $124,002 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 185,146 Value ($000) $122,211 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 205,617 Value ($000) $116,165 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 210,882 Value ($000) $113,535 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 215,399 Value ($000) $107,025 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 222,001 Value ($000) $101,343 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 201,173 Value ($000) $95,008 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 204,540 Value ($000) $98,032 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 206,006 Value ($000) $118,629 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 233,408 Value ($000) $132,506 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 315,790 Value ($000) $141,900 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 320,503 Value ($000) $126,813 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 335,867 Value ($000) $118,386 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 3,517 Value ($000) $1,325 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 4,786 Value ($000) $1,699 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 3,656 Value ($000) $1,109 Avg Close $279.18 Range $257.36 - $295.59

Q4 2018

Shares 380,353 Value ($000) $77,482 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 557,419 Value ($000) $130,927 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 566,738 Value ($000) $118,437 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 375,714 Value ($000) $70,796 Avg Close $169.26 Range $157.50 - $179.09

Q3 2016

Shares 6,170 Value ($000) $941 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 593,085 Value ($000) $93,138 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 771,845 Value ($000) $121,627 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 797,082 Value ($000) $128,729 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 640,136 Value ($000) $92,544 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 696,474 Value ($000) $94,066 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 766,459 Value ($000) $116,115 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 1,236,182 Value ($000) $175,229 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 1,006,955 Value ($000) $126,192 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 1,021,784 Value ($000) $117,669 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 1,330,340 Value ($000) $148,572 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 1,373,134 Value ($000) $163,430 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 1,388,192 Value ($000) $159,878 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 1,570,471 Value ($000) $173,647 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	92,163	$85,309	$956.70	$902.01 - $997.89
Q2 2025	144,626	$143,171	$990.72	$868.14 - $1064.10
Q1 2025	148,156	$140,123	$970.56	$877.95 - $1073.82
Q4 2024	148,514	$136,079	$922.64	$861.51 - $1003.02
Q3 2024	147,816	$131,042	$861.91	$787.84 - $917.81
Q2 2024	145,392	$123,582	$773.82	$690.64 - $867.04
Q1 2024	169,256	$124,002	$706.75	$633.49 - $779.59
Q4 2023	185,146	$122,211	$573.49	$521.47 - $661.25
Q3 2023	205,617	$116,165	$532.21	$505.45 - $552.31
Q2 2023	210,882	$113,535	$487.14	$459.09 - $519.84
Q1 2023	215,399	$107,025	$471.27	$429.88 - $509.61
Q4 2022	222,001	$101,343	$468.77	$430.19 - $520.75
Q3 2022	201,173	$95,008	$498.08	$444.08 - $541.06
Q2 2022	204,540	$98,032	$484.91	$388.78 - $584.62
Q1 2022	206,006	$118,629	$500.83	$447.15 - $559.84
Q4 2021	233,408	$132,506	$488.10	$415.17 - $544.86
Q3 2021	315,790	$141,900	$418.22	$374.22 - $447.84
Q2 2021	320,503	$126,813	$359.04	$333.36 - $380.48
Q1 2021	335,867	$118,386	$329.77	$291.05 - $361.01
Q4 2020	3,517	$1,325	$347.39	$324.71 - $367.18
Q3 2020	4,786	$1,699	$309.06	$276.17 - $334.67
Q2 2020	3,656	$1,109	$279.18	$257.36 - $295.59
Q4 2018	380,353	$77,482	$201.98	$171.58 - $217.57
Q3 2018	557,419	$130,927	$203.13	$185.65 - $221.43
Q2 2018	566,738	$118,437	$177.76	$162.55 - $191.42
Q1 2018	375,714	$70,796	$169.26	$157.50 - $179.09
Q3 2016	6,170	$941	$136.95	$124.90 - $143.90
Q2 2016	593,085	$93,138	$128.04	$117.26 - $134.37
Q1 2016	771,845	$121,627	$127.74	$119.17 - $135.67
Q4 2015	797,082	$128,729	$132.84	$119.34 - $142.82
Q3 2015	640,136	$92,544	$119.60	$98.22 - $123.53
Q2 2015	696,474	$94,066	$120.23	$112.77 - $127.67
Q1 2015	766,459	$116,115	$120.91	$111.40 - $128.73
Q4 2014	1,236,182	$175,229	$109.42	$98.12 - $118.34
Q3 2014	1,006,955	$126,192	$97.13	$92.09 - $102.72
Q2 2014	1,021,784	$117,669	$91.81	$88.18 - $95.25
Q1 2014	1,330,340	$148,572	$91.29	$87.26 - $95.07
Q4 2013	1,373,134	$163,430	$95.15	$87.55 - $100.50
Q3 2013	1,388,192	$159,878	$91.64	$87.25 - $95.29
Q2 2013	1,570,471	$173,647	$86.56	$81.59 - $91.78