COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2025

Shares 389,577 Value ($000) $335,948 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 390,277 Value ($000) $361,252 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 347,877 Value ($000) $344,377 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 382,277 Value ($000) $361,550 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 387,195 Value ($000) $354,775 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 375,198 Value ($000) $332,621 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 361,627 Value ($000) $307,379 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 215,677 Value ($000) $158,011 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 317,252 Value ($000) $209,412 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 353,602 Value ($000) $199,771 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 365,096 Value ($000) $196,560 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 412,977 Value ($000) $205,196 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 420,877 Value ($000) $192,130 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 343,677 Value ($000) $162,308 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 461,577 Value ($000) $221,225 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 418,387 Value ($000) $240,928 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 470,777 Value ($000) $267,260 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 474,677 Value ($000) $213,296 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 376,368 Value ($000) $148,918 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 197,968 Value ($000) $69,780 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 297,168 Value ($000) $111,967 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 334,010 Value ($000) $118,574 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 250,110 Value ($000) $75,836 Avg Close $279.18 Range $257.36 - $295.59

Q1 2020

Shares 497,120 Value ($000) $141,744 Avg Close $277.78 Range $248.54 - $298.00

Q4 2019

Shares 508,478 Value ($000) $149,452 Avg Close $271.52 Range $256.90 - $280.77

Q3 2019

Shares 58,659 Value ($000) $16,900 Avg Close $256.34 Range $238.19 - $280.38

Q2 2019

Shares 530,334 Value ($000) $140,146 Avg Close $226.60 Range $212.14 - $244.81

Q1 2019

Shares 259,898 Value ($000) $62,932 Avg Close $198.35 Range $180.94 - $220.09

Q4 2018

Shares 535,744 Value ($000) $109,136 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 555,956 Value ($000) $130,583 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 570,756 Value ($000) $119,277 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 439,100 Value ($000) $82,740 Avg Close $169.26 Range $157.50 - $179.09

Q4 2017

Shares 378,100 Value ($000) $70,372 Avg Close $154.45 Range $137.67 - $175.03

Q3 2017

Shares 221,210 Value ($000) $36,343 Avg Close $140.12 Range $133.57 - $147.68

Q2 2017

Shares 427,710 Value ($000) $68,404 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 591,071 Value ($000) $99,117 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 609,468 Value ($000) $97,582 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 618,068 Value ($000) $94,262 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 644,268 Value ($000) $101,176 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 656,268 Value ($000) $103,415 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 648,009 Value ($000) $104,653 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 659,409 Value ($000) $95,331 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 667,609 Value ($000) $90,168 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 673,609 Value ($000) $102,048 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 444,609 Value ($000) $63,023 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 656,309 Value ($000) $82,249 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 570,177 Value ($000) $65,662 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 530,777 Value ($000) $59,277 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 662,077 Value ($000) $78,800 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 644,293 Value ($000) $74,203 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 223,809 Value ($000) $24,747 Avg Close $86.56 Range $81.59 - $91.78

Q1 2013

Shares 618,809 Value ($000) $65,662 Avg Close $80.79 Range $78.23 - $84.64

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	389,577	$335,948	$905.73	$844.06 - $962.64
Q3 2025	390,277	$361,252	$956.70	$902.01 - $997.89
Q2 2025	347,877	$344,377	$990.72	$868.14 - $1064.10
Q1 2025	382,277	$361,550	$970.56	$877.95 - $1073.82
Q4 2024	387,195	$354,775	$922.64	$861.51 - $1003.02
Q3 2024	375,198	$332,621	$861.91	$787.84 - $917.81
Q2 2024	361,627	$307,379	$773.82	$690.64 - $867.04
Q1 2024	215,677	$158,011	$706.75	$633.49 - $779.59
Q4 2023	317,252	$209,412	$573.49	$521.47 - $661.25
Q3 2023	353,602	$199,771	$532.21	$505.45 - $552.31
Q2 2023	365,096	$196,560	$487.14	$459.09 - $519.84
Q1 2023	412,977	$205,196	$471.27	$429.88 - $509.61
Q4 2022	420,877	$192,130	$468.77	$430.19 - $520.75
Q3 2022	343,677	$162,308	$498.08	$444.08 - $541.06
Q2 2022	461,577	$221,225	$484.91	$388.78 - $584.62
Q1 2022	418,387	$240,928	$500.83	$447.15 - $559.84
Q4 2021	470,777	$267,260	$488.10	$415.17 - $544.86
Q3 2021	474,677	$213,296	$418.22	$374.22 - $447.84
Q2 2021	376,368	$148,918	$359.04	$333.36 - $380.48
Q1 2021	197,968	$69,780	$329.77	$291.05 - $361.01
Q4 2020	297,168	$111,967	$347.39	$324.71 - $367.18
Q3 2020	334,010	$118,574	$309.06	$276.17 - $334.67
Q2 2020	250,110	$75,836	$279.18	$257.36 - $295.59
Q1 2020	497,120	$141,744	$277.78	$248.54 - $298.00
Q4 2019	508,478	$149,452	$271.52	$256.90 - $280.77
Q3 2019	58,659	$16,900	$256.34	$238.19 - $280.38
Q2 2019	530,334	$140,146	$226.60	$212.14 - $244.81
Q1 2019	259,898	$62,932	$198.35	$180.94 - $220.09
Q4 2018	535,744	$109,136	$201.98	$171.58 - $217.57
Q3 2018	555,956	$130,583	$203.13	$185.65 - $221.43
Q2 2018	570,756	$119,277	$177.76	$162.55 - $191.42
Q1 2018	439,100	$82,740	$169.26	$157.50 - $179.09
Q4 2017	378,100	$70,372	$154.45	$137.67 - $175.03
Q3 2017	221,210	$36,343	$140.12	$133.57 - $147.68
Q2 2017	427,710	$68,404	$150.98	$139.41 - $162.71
Q1 2017	591,071	$99,117	$142.87	$134.91 - $152.51
Q4 2016	609,468	$97,582	$129.79	$120.95 - $140.39
Q3 2016	618,068	$94,262	$136.95	$124.90 - $143.90
Q2 2016	644,268	$101,176	$128.04	$117.26 - $134.37
Q1 2016	656,268	$103,415	$127.74	$119.17 - $135.67
Q4 2015	648,009	$104,653	$132.84	$119.34 - $142.82
Q3 2015	659,409	$95,331	$119.60	$98.22 - $123.53
Q2 2015	667,609	$90,168	$120.23	$112.77 - $127.67
Q1 2015	673,609	$102,048	$120.91	$111.40 - $128.73
Q4 2014	444,609	$63,023	$109.42	$98.12 - $118.34
Q3 2014	656,309	$82,249	$97.13	$92.09 - $102.72
Q2 2014	570,177	$65,662	$91.81	$88.18 - $95.25
Q1 2014	530,777	$59,277	$91.29	$87.26 - $95.07
Q4 2013	662,077	$78,800	$95.15	$87.55 - $100.50
Q3 2013	644,293	$74,203	$91.64	$87.25 - $95.29
Q2 2013	223,809	$24,747	$86.56	$81.59 - $91.78
Q1 2013	618,809	$65,662	$80.79	$78.23 - $84.64