CDW CORP

Ticker: CDW CUSIP: 12514G108 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q4 2025

Shares 4,827 Value ($000) $657 Avg Close $147.03 Range $135.03 - $161.75

Q3 2025

Shares 5,527 Value ($000) $880 Avg Close $168.81 Range $155.96 - $182.41

Q2 2025

Shares 7,277 Value ($000) $1,300 Avg Close $168.13 Range $135.72 - $190.08

Q1 2025

Shares 6,462 Value ($000) $1,036 Avg Close $179.25 Range $156.93 - $219.61

Q4 2024

Shares 4,517 Value ($000) $786 Avg Close $190.95 Range $168.14 - $222.64

Q3 2024

Shares 5,492 Value ($000) $1,243 Avg Close $217.57 Range $201.61 - $236.21

Q2 2024

Shares 5,627 Value ($000) $1,260 Avg Close $226.70 Range $208.03 - $257.18

Q1 2024

Shares 4,952 Value ($000) $1,267 Avg Close $231.59 Range $207.20 - $253.28

Q4 2023

Shares 4,637 Value ($000) $1,054 Avg Close $206.08 Range $179.72 - $223.46

Q3 2023

Shares 3,905 Value ($000) $788 Avg Close $193.29 Range $174.69 - $209.50

Q2 2023

Shares 2,700 Value ($000) $495 Avg Close $168.84 Range $155.05 - $188.65

Q1 2023

Shares 66,623 Value ($000) $12,984 Avg Close $189.24 Range $170.92 - $206.90

Q4 2022

Shares 66,510 Value ($000) $11,877 Avg Close $168.86 Range $141.89 - $189.58

Q3 2022

Shares 66,677 Value ($000) $10,407 Avg Close $164.20 Range $145.56 - $180.72

Q2 2022

Shares 66,748 Value ($000) $10,517 Avg Close $160.53 Range $147.46 - $172.65

Q1 2022

Shares 67,423 Value ($000) $11,573 Avg Close $174.21 Range $155.37 - $198.47

Q4 2021

Shares 67,348 Value ($000) $13,792 Avg Close $180.53 Range $163.37 - $197.48

Q3 2021

Shares 66,806 Value ($000) $12,160 Avg Close $178.95 Range $162.18 - $193.32

Q2 2021

Shares 66,935 Value ($000) $11,690 Avg Close $162.84 Range $153.52 - $174.30

Q1 2021

Shares 67,510 Value ($000) $11,580 Avg Close $140.79 Range $118.17 - $159.55

Q4 2020

Shares 68,710 Value ($000) $9,055 Avg Close $123.09 Range $109.89 - $137.99

Q3 2020

Shares 62,420 Value ($000) $7,461 Avg Close $107.20 Range $99.42 - $114.46

Q2 2020

Shares 62,430 Value ($000) $7,253 Avg Close $101.20 Range $80.00 - $120.94

Q1 2020

Shares 4,510 Value ($000) $421 Avg Close $114.00 Range $68.44 - $135.85

Q4 2019

Shares 3,995 Value ($000) $571 Avg Close $122.84 Range $109.01 - $134.79

Q3 2019

Shares 2,560 Value ($000) $315 Avg Close $106.19 Range $98.04 - $115.31

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,827	$657	$147.03	$135.03 - $161.75
Q3 2025	5,527	$880	$168.81	$155.96 - $182.41
Q2 2025	7,277	$1,300	$168.13	$135.72 - $190.08
Q1 2025	6,462	$1,036	$179.25	$156.93 - $219.61
Q4 2024	4,517	$786	$190.95	$168.14 - $222.64
Q3 2024	5,492	$1,243	$217.57	$201.61 - $236.21
Q2 2024	5,627	$1,260	$226.70	$208.03 - $257.18
Q1 2024	4,952	$1,267	$231.59	$207.20 - $253.28
Q4 2023	4,637	$1,054	$206.08	$179.72 - $223.46
Q3 2023	3,905	$788	$193.29	$174.69 - $209.50
Q2 2023	2,700	$495	$168.84	$155.05 - $188.65
Q1 2023	66,623	$12,984	$189.24	$170.92 - $206.90
Q4 2022	66,510	$11,877	$168.86	$141.89 - $189.58
Q3 2022	66,677	$10,407	$164.20	$145.56 - $180.72
Q2 2022	66,748	$10,517	$160.53	$147.46 - $172.65
Q1 2022	67,423	$11,573	$174.21	$155.37 - $198.47
Q4 2021	67,348	$13,792	$180.53	$163.37 - $197.48
Q3 2021	66,806	$12,160	$178.95	$162.18 - $193.32
Q2 2021	66,935	$11,690	$162.84	$153.52 - $174.30
Q1 2021	67,510	$11,580	$140.79	$118.17 - $159.55
Q4 2020	68,710	$9,055	$123.09	$109.89 - $137.99
Q3 2020	62,420	$7,461	$107.20	$99.42 - $114.46
Q2 2020	62,430	$7,253	$101.20	$80.00 - $120.94
Q1 2020	4,510	$421	$114.00	$68.44 - $135.85
Q4 2019	3,995	$571	$122.84	$109.01 - $134.79
Q3 2019	2,560	$315	$106.19	$98.04 - $115.31