COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

ONTARIO TEACHERS PENSION PLAN BOARD's Holding History (CIK: 0000937567)

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

Q4 2025

Shares 6,187 Value ($000) $5,335 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 5,603 Value ($000) $5,186 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 4,403 Value ($000) $4,359 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 1,904 Value ($000) $1,801 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 2,245 Value ($000) $2,057 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 2,657 Value ($000) $2,355 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 4,955 Value ($000) $4,212 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 7,187 Value ($000) $5,265 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 7,730 Value ($000) $5,102 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 2,819 Value ($000) $1,593 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 1,883 Value ($000) $1,014 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 7,341 Value ($000) $3,648 Avg Close $471.27 Range $429.88 - $509.61

Q3 2022

Shares 2,884 Value ($000) $1,362 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 3,743 Value ($000) $1,794 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 3,949 Value ($000) $2,274 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 5,469 Value ($000) $3,105 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 5,718 Value ($000) $2,569 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 4,337 Value ($000) $1,716 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 3,301 Value ($000) $1,164 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 2,503 Value ($000) $943 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 5,893 Value ($000) $2,092 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 7,967 Value ($000) $2,416 Avg Close $279.18 Range $257.36 - $295.59

Q1 2020

Shares 11,511 Value ($000) $3,282 Avg Close $277.78 Range $248.54 - $298.00

Q4 2019

Shares 17,202 Value ($000) $5,056 Avg Close $271.52 Range $256.90 - $280.77

Q3 2019

Shares 35,895 Value ($000) $10,342 Avg Close $256.34 Range $238.19 - $280.38

Q2 2019

Shares 28,659 Value ($000) $7,573 Avg Close $226.60 Range $212.14 - $244.81

Q1 2019

Shares 4,111 Value ($000) $995 Avg Close $198.35 Range $180.94 - $220.09

Q4 2018

Shares 7,814 Value ($000) $1,592 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 4,875 Value ($000) $1,145 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 2,379 Value ($000) $497 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 1,258 Value ($000) $237 Avg Close $169.26 Range $157.50 - $179.09

Q4 2017

Shares 41,315 Value ($000) $7,690 Avg Close $154.45 Range $137.67 - $175.03

Q3 2017

Shares 49,991 Value ($000) $8,213 Avg Close $140.12 Range $133.57 - $147.68

Q2 2017

Shares 51,048 Value ($000) $8,164 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 49,189 Value ($000) $8,249 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 51,689 Value ($000) $8,276 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 53,581 Value ($000) $8,172 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 52,591 Value ($000) $8,259 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 50,854 Value ($000) $8,014 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 50,447 Value ($000) $8,147 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 50,375 Value ($000) $7,283 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 109,776 Value ($000) $14,826 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 98,297 Value ($000) $14,892 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 68,107 Value ($000) $9,654 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 78,995 Value ($000) $9,900 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 73,565 Value ($000) $8,472 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 73,384 Value ($000) $8,196 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 88,978 Value ($000) $10,590 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 104,880 Value ($000) $12,079 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 105,271 Value ($000) $11,640 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	6,187	$5,335	$905.73	$844.06 - $962.64
Q3 2025	5,603	$5,186	$956.70	$902.01 - $997.89
Q2 2025	4,403	$4,359	$990.72	$868.14 - $1064.10
Q1 2025	1,904	$1,801	$970.56	$877.95 - $1073.82
Q4 2024	2,245	$2,057	$922.64	$861.51 - $1003.02
Q3 2024	2,657	$2,355	$861.91	$787.84 - $917.81
Q2 2024	4,955	$4,212	$773.82	$690.64 - $867.04
Q1 2024	7,187	$5,265	$706.75	$633.49 - $779.59
Q4 2023	7,730	$5,102	$573.49	$521.47 - $661.25
Q3 2023	2,819	$1,593	$532.21	$505.45 - $552.31
Q2 2023	1,883	$1,014	$487.14	$459.09 - $519.84
Q1 2023	7,341	$3,648	$471.27	$429.88 - $509.61
Q3 2022	2,884	$1,362	$498.08	$444.08 - $541.06
Q2 2022	3,743	$1,794	$484.91	$388.78 - $584.62
Q1 2022	3,949	$2,274	$500.83	$447.15 - $559.84
Q4 2021	5,469	$3,105	$488.10	$415.17 - $544.86
Q3 2021	5,718	$2,569	$418.22	$374.22 - $447.84
Q2 2021	4,337	$1,716	$359.04	$333.36 - $380.48
Q1 2021	3,301	$1,164	$329.77	$291.05 - $361.01
Q4 2020	2,503	$943	$347.39	$324.71 - $367.18
Q3 2020	5,893	$2,092	$309.06	$276.17 - $334.67
Q2 2020	7,967	$2,416	$279.18	$257.36 - $295.59
Q1 2020	11,511	$3,282	$277.78	$248.54 - $298.00
Q4 2019	17,202	$5,056	$271.52	$256.90 - $280.77
Q3 2019	35,895	$10,342	$256.34	$238.19 - $280.38
Q2 2019	28,659	$7,573	$226.60	$212.14 - $244.81
Q1 2019	4,111	$995	$198.35	$180.94 - $220.09
Q4 2018	7,814	$1,592	$201.98	$171.58 - $217.57
Q3 2018	4,875	$1,145	$203.13	$185.65 - $221.43
Q2 2018	2,379	$497	$177.76	$162.55 - $191.42
Q1 2018	1,258	$237	$169.26	$157.50 - $179.09
Q4 2017	41,315	$7,690	$154.45	$137.67 - $175.03
Q3 2017	49,991	$8,213	$140.12	$133.57 - $147.68
Q2 2017	51,048	$8,164	$150.98	$139.41 - $162.71
Q1 2017	49,189	$8,249	$142.87	$134.91 - $152.51
Q4 2016	51,689	$8,276	$129.79	$120.95 - $140.39
Q3 2016	53,581	$8,172	$136.95	$124.90 - $143.90
Q2 2016	52,591	$8,259	$128.04	$117.26 - $134.37
Q1 2016	50,854	$8,014	$127.74	$119.17 - $135.67
Q4 2015	50,447	$8,147	$132.84	$119.34 - $142.82
Q3 2015	50,375	$7,283	$119.60	$98.22 - $123.53
Q2 2015	109,776	$14,826	$120.23	$112.77 - $127.67
Q1 2015	98,297	$14,892	$120.91	$111.40 - $128.73
Q4 2014	68,107	$9,654	$109.42	$98.12 - $118.34
Q3 2014	78,995	$9,900	$97.13	$92.09 - $102.72
Q2 2014	73,565	$8,472	$91.81	$88.18 - $95.25
Q1 2014	73,384	$8,196	$91.29	$87.26 - $95.07
Q4 2013	88,978	$10,590	$95.15	$87.55 - $100.50
Q3 2013	104,880	$12,079	$91.64	$87.25 - $95.29
Q2 2013	105,271	$11,640	$86.56	$81.59 - $91.78