COSTCO WHSL CORP NEW

Ticker: COST CUSIP: 22160K105 Class: COM

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q4 2025

Shares 269,502 Value ($000) $232,402 Avg Close $905.73 Range $844.06 - $962.64

Q3 2025

Shares 378,354 Value ($000) $350,216 Avg Close $956.70 Range $902.01 - $997.89

Q2 2025

Shares 436,708 Value ($000) $432,315 Avg Close $990.72 Range $868.14 - $1064.10

Q1 2025

Shares 453,339 Value ($000) $428,759 Avg Close $970.56 Range $877.95 - $1073.82

Q4 2024

Shares 586,584 Value ($000) $537,469 Avg Close $922.64 Range $861.51 - $1003.02

Q3 2024

Shares 627,348 Value ($000) $556,157 Avg Close $861.91 Range $787.84 - $917.81

Q2 2024

Shares 691,694 Value ($000) $587,933 Avg Close $773.82 Range $690.64 - $867.04

Q1 2024

Shares 822,444 Value ($000) $602,547 Avg Close $706.75 Range $633.49 - $779.59

Q4 2023

Shares 627,356 Value ($000) $414,105 Avg Close $573.49 Range $521.47 - $661.25

Q3 2023

Shares 664,531 Value ($000) $375,433 Avg Close $532.21 Range $505.45 - $552.31

Q2 2023

Shares 663,465 Value ($000) $357,196 Avg Close $487.14 Range $459.09 - $519.84

Q1 2023

Shares 581,163 Value ($000) $288,762 Avg Close $471.27 Range $429.88 - $509.61

Q4 2022

Shares 700,467 Value ($000) $319,763 Avg Close $468.77 Range $430.19 - $520.75

Q3 2022

Shares 911,411 Value ($000) $430,432 Avg Close $498.08 Range $444.08 - $541.06

Q2 2022

Shares 804,161 Value ($000) $385,414 Avg Close $484.91 Range $388.78 - $584.62

Q1 2022

Shares 795,191 Value ($000) $457,911 Avg Close $500.83 Range $447.15 - $559.84

Q4 2021

Shares 759,253 Value ($000) $431,030 Avg Close $488.10 Range $415.17 - $544.86

Q3 2021

Shares 732,480 Value ($000) $329,139 Avg Close $418.22 Range $374.22 - $447.84

Q2 2021

Shares 706,940 Value ($000) $279,714 Avg Close $359.04 Range $333.36 - $380.48

Q1 2021

Shares 706,597 Value ($000) $249,061 Avg Close $329.77 Range $291.05 - $361.01

Q4 2020

Shares 649,492 Value ($000) $244,713 Avg Close $347.39 Range $324.71 - $367.18

Q3 2020

Shares 535,738 Value ($000) $190,186 Avg Close $309.06 Range $276.17 - $334.67

Q2 2020

Shares 565,825 Value ($000) $171,565 Avg Close $279.18 Range $257.36 - $295.59

Q1 2020

Shares 468,422 Value ($000) $133,562 Avg Close $277.78 Range $248.54 - $298.00

Q4 2019

Shares 461,408 Value ($000) $135,616 Avg Close $271.52 Range $256.90 - $280.77

Q3 2019

Shares 386,361 Value ($000) $111,314 Avg Close $256.34 Range $238.19 - $280.38

Q2 2019

Shares 372,936 Value ($000) $98,552 Avg Close $226.60 Range $212.14 - $244.81

Q1 2019

Shares 377,451 Value ($000) $91,397 Avg Close $198.35 Range $180.94 - $220.09

Q4 2018

Shares 373,986 Value ($000) $76,172 Avg Close $201.98 Range $171.58 - $217.57

Q3 2018

Shares 179,708 Value ($000) $42,208 Avg Close $203.13 Range $185.65 - $221.43

Q2 2018

Shares 115,927 Value ($000) $24,226 Avg Close $177.76 Range $162.55 - $191.42

Q1 2018

Shares 117,460 Value ($000) $22,132 Avg Close $169.26 Range $157.50 - $179.09

Q4 2017

Shares 101,746 Value ($000) $18,940 Avg Close $154.45 Range $137.67 - $175.03

Q3 2017

Shares 28,588 Value ($000) $4,696 Avg Close $140.12 Range $133.57 - $147.68

Q2 2017

Shares 22,858 Value ($000) $3,655 Avg Close $150.98 Range $139.41 - $162.71

Q1 2017

Shares 23,460 Value ($000) $3,935 Avg Close $142.87 Range $134.91 - $152.51

Q4 2016

Shares 5,325 Value ($000) $852 Avg Close $129.79 Range $120.95 - $140.39

Q3 2016

Shares 21,060 Value ($000) $3,212 Avg Close $136.95 Range $124.90 - $143.90

Q2 2016

Shares 22,859 Value ($000) $3,590 Avg Close $128.04 Range $117.26 - $134.37

Q1 2016

Shares 22,859 Value ($000) $3,602 Avg Close $127.74 Range $119.17 - $135.67

Q4 2015

Shares 22,859 Value ($000) $3,691 Avg Close $132.84 Range $119.34 - $142.82

Q3 2015

Shares 19,377 Value ($000) $2,801 Avg Close $119.60 Range $98.22 - $123.53

Q2 2015

Shares 35,732 Value ($000) $4,824 Avg Close $120.23 Range $112.77 - $127.67

Q1 2015

Shares 37,638 Value ($000) $5,702 Avg Close $120.91 Range $111.40 - $128.73

Q4 2014

Shares 27,964 Value ($000) $3,964 Avg Close $109.42 Range $98.12 - $118.34

Q3 2014

Shares 63,435 Value ($000) $7,950 Avg Close $97.13 Range $92.09 - $102.72

Q2 2014

Shares 64,800 Value ($000) $7,462 Avg Close $91.81 Range $88.18 - $95.25

Q1 2014

Shares 57,396 Value ($000) $6,410 Avg Close $91.29 Range $87.26 - $95.07

Q4 2013

Shares 50,454 Value ($000) $6,005 Avg Close $95.15 Range $87.55 - $100.50

Q3 2013

Shares 50,943 Value ($000) $5,864 Avg Close $91.64 Range $87.25 - $95.29

Q2 2013

Shares 54,320 Value ($000) $6,007 Avg Close $86.56 Range $81.59 - $91.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	269,502	$232,402	$905.73	$844.06 - $962.64
Q3 2025	378,354	$350,216	$956.70	$902.01 - $997.89
Q2 2025	436,708	$432,315	$990.72	$868.14 - $1064.10
Q1 2025	453,339	$428,759	$970.56	$877.95 - $1073.82
Q4 2024	586,584	$537,469	$922.64	$861.51 - $1003.02
Q3 2024	627,348	$556,157	$861.91	$787.84 - $917.81
Q2 2024	691,694	$587,933	$773.82	$690.64 - $867.04
Q1 2024	822,444	$602,547	$706.75	$633.49 - $779.59
Q4 2023	627,356	$414,105	$573.49	$521.47 - $661.25
Q3 2023	664,531	$375,433	$532.21	$505.45 - $552.31
Q2 2023	663,465	$357,196	$487.14	$459.09 - $519.84
Q1 2023	581,163	$288,762	$471.27	$429.88 - $509.61
Q4 2022	700,467	$319,763	$468.77	$430.19 - $520.75
Q3 2022	911,411	$430,432	$498.08	$444.08 - $541.06
Q2 2022	804,161	$385,414	$484.91	$388.78 - $584.62
Q1 2022	795,191	$457,911	$500.83	$447.15 - $559.84
Q4 2021	759,253	$431,030	$488.10	$415.17 - $544.86
Q3 2021	732,480	$329,139	$418.22	$374.22 - $447.84
Q2 2021	706,940	$279,714	$359.04	$333.36 - $380.48
Q1 2021	706,597	$249,061	$329.77	$291.05 - $361.01
Q4 2020	649,492	$244,713	$347.39	$324.71 - $367.18
Q3 2020	535,738	$190,186	$309.06	$276.17 - $334.67
Q2 2020	565,825	$171,565	$279.18	$257.36 - $295.59
Q1 2020	468,422	$133,562	$277.78	$248.54 - $298.00
Q4 2019	461,408	$135,616	$271.52	$256.90 - $280.77
Q3 2019	386,361	$111,314	$256.34	$238.19 - $280.38
Q2 2019	372,936	$98,552	$226.60	$212.14 - $244.81
Q1 2019	377,451	$91,397	$198.35	$180.94 - $220.09
Q4 2018	373,986	$76,172	$201.98	$171.58 - $217.57
Q3 2018	179,708	$42,208	$203.13	$185.65 - $221.43
Q2 2018	115,927	$24,226	$177.76	$162.55 - $191.42
Q1 2018	117,460	$22,132	$169.26	$157.50 - $179.09
Q4 2017	101,746	$18,940	$154.45	$137.67 - $175.03
Q3 2017	28,588	$4,696	$140.12	$133.57 - $147.68
Q2 2017	22,858	$3,655	$150.98	$139.41 - $162.71
Q1 2017	23,460	$3,935	$142.87	$134.91 - $152.51
Q4 2016	5,325	$852	$129.79	$120.95 - $140.39
Q3 2016	21,060	$3,212	$136.95	$124.90 - $143.90
Q2 2016	22,859	$3,590	$128.04	$117.26 - $134.37
Q1 2016	22,859	$3,602	$127.74	$119.17 - $135.67
Q4 2015	22,859	$3,691	$132.84	$119.34 - $142.82
Q3 2015	19,377	$2,801	$119.60	$98.22 - $123.53
Q2 2015	35,732	$4,824	$120.23	$112.77 - $127.67
Q1 2015	37,638	$5,702	$120.91	$111.40 - $128.73
Q4 2014	27,964	$3,964	$109.42	$98.12 - $118.34
Q3 2014	63,435	$7,950	$97.13	$92.09 - $102.72
Q2 2014	64,800	$7,462	$91.81	$88.18 - $95.25
Q1 2014	57,396	$6,410	$91.29	$87.26 - $95.07
Q4 2013	50,454	$6,005	$95.15	$87.55 - $100.50
Q3 2013	50,943	$5,864	$91.64	$87.25 - $95.29
Q2 2013	54,320	$6,007	$86.56	$81.59 - $91.78