MARSH & MCLENNAN COS INC

Ticker: MRSH CUSIP: 571748102 Class: COM

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

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

Q4 2025

Shares 10,052 Value ($000) $1,865 Avg Close $186.43 Range $173.30 - $207.83

Q3 2025

Shares 6,041 Value ($000) $1,217 Avg Close $204.01 Range $193.16 - $217.79

Q2 2025

Shares 6,120 Value ($000) $1,338 Avg Close $223.19 Range $207.03 - $245.83

Q1 2025

Shares 6,099 Value ($000) $1,488 Avg Close $223.35 Range $202.92 - $243.01

Q4 2024

Shares 6,466 Value ($000) $1,373 Avg Close $217.77 Range $205.01 - $231.80

Q3 2024

Shares 7,391 Value ($000) $1,649 Avg Close $216.92 Range $203.69 - $227.83

Q2 2024

Shares 7,391 Value ($000) $1,557 Avg Close $200.17 Range $190.69 - $211.90

Q1 2024

Shares 7,615 Value ($000) $1,569 Avg Close $193.37 Range $182.28 - $203.67

Q4 2023

Shares 7,660 Value ($000) $1,451 Avg Close $186.95 Range $177.61 - $196.74

Q3 2023

Shares 8,140 Value ($000) $1,549 Avg Close $184.60 Range $176.10 - $192.52

Q2 2023

Shares 8,695 Value ($000) $1,635 Avg Close $170.44 Range $158.35 - $182.02

Q1 2023

Shares 8,720 Value ($000) $1,452 Avg Close $159.32 Range $144.98 - $169.70

Q4 2022

Shares 9,295 Value ($000) $1,538 Avg Close $155.95 Range $140.95 - $169.03

Q3 2022

Shares 9,345 Value ($000) $1,395 Avg Close $152.34 Range $138.65 - $166.00

Q2 2022

Shares 9,345 Value ($000) $1,451 Avg Close $151.71 Range $135.36 - $173.83

Q1 2022

Shares 9,745 Value ($000) $1,643 Avg Close $148.65 Range $134.43 - $164.01

Q4 2021

Shares 9,845 Value ($000) $1,711 Avg Close $156.21 Range $141.53 - $165.13

Q3 2021

Shares 10,095 Value ($000) $1,529 Avg Close $141.63 Range $128.41 - $152.48

Q2 2021

Shares 10,190 Value ($000) $1,434 Avg Close $125.21 Range $112.59 - $132.40

Q1 2021

Shares 10,456 Value ($000) $1,306 Avg Close $107.02 Range $98.83 - $113.89

Q4 2020

Shares 10,445 Value ($000) $1,222 Avg Close $105.23 Range $94.36 - $110.82

Q3 2020

Shares 10,445 Value ($000) $1,198 Avg Close $105.63 Range $97.93 - $111.90

Q2 2020

Shares 10,645 Value ($000) $1,143 Avg Close $93.00 Range $71.99 - $103.18

Q1 2020

Shares 10,735 Value ($000) $928 Avg Close $97.35 Range $67.78 - $109.87

Q4 2019

Shares 11,285 Value ($000) $1,257 Avg Close $95.06 Range $86.01 - $104.01

Q3 2019

Shares 11,315 Value ($000) $1,132 Avg Close $90.54 Range $85.70 - $93.91

Q2 2019

Shares 11,360 Value ($000) $1,133 Avg Close $86.29 Range $82.49 - $90.62

Q1 2019

Shares 11,760 Value ($000) $1,104 Avg Close $79.33 Range $69.39 - $85.50

Q4 2018

Shares 12,660 Value ($000) $1,010 Avg Close $74.46 Range $66.23 - $80.27

Q3 2018

Shares 12,660 Value ($000) $1,047 Avg Close $75.30 Range $71.83 - $78.35

Q2 2018

Shares 12,760 Value ($000) $1,046 Avg Close $72.21 Range $69.38 - $74.98

Q1 2018

Shares 12,960 Value ($000) $1,070 Avg Close $72.87 Range $69.13 - $75.89

Q4 2017

Shares 13,160 Value ($000) $1,071 Avg Close $72.87 Range $70.08 - $76.08

Q3 2017

Shares 14,900 Value ($000) $1,249 Avg Close $69.18 Range $66.77 - $73.79

Q2 2017

Shares 16,244 Value ($000) $1,266 Avg Close $65.59 Range $62.21 - $70.09

Q1 2017

Shares 16,724 Value ($000) $1,236 Avg Close $61.73 Range $57.29 - $65.47

Q4 2016

Shares 16,824 Value ($000) $1,137 Avg Close $57.67 Range $53.49 - $60.18

Q3 2016

Shares 18,084 Value ($000) $1,216 Avg Close $57.32 Range $55.91 - $58.65

Q2 2016

Shares 18,084 Value ($000) $1,238 Avg Close $54.66 Range $50.84 - $58.55

Q1 2016

Shares 19,284 Value ($000) $1,172 Avg Close $47.39 Range $42.68 - $51.78

Q4 2015

Shares 19,284 Value ($000) $1,069 Avg Close $46.40 Range $42.63 - $48.51

Q3 2015

Shares 24,284 Value ($000) $1,268 Avg Close $46.73 Range $42.51 - $49.38

Q2 2015

Shares 26,084 Value ($000) $1,479 Avg Close $48.09 Range $46.11 - $50.08

Q1 2015

Shares 26,184 Value ($000) $1,469 Avg Close $46.67 Range $44.22 - $48.27

Q4 2014

Shares 27,023 Value ($000) $1,547 Avg Close $45.21 Range $40.02 - $48.56

Q3 2014

Shares 27,594 Value ($000) $1,444 Avg Close $42.74 Range $40.97 - $44.10

Q2 2014

Shares 27,594 Value ($000) $1,430 Avg Close $40.50 Range $38.06 - $42.84

Q1 2014

Shares 27,555 Value ($000) $1,358 Avg Close $38.81 Range $35.81 - $41.06

Q4 2013

Shares 27,555 Value ($000) $1,333 Avg Close $37.39 Range $33.79 - $39.29

Q3 2013

Shares 28,178 Value ($000) $1,227 Avg Close $33.72 Range $31.78 - $35.90

Q2 2013

Shares 28,178 Value ($000) $1,125 Avg Close $31.19 Range $29.36 - $33.32

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,052	$1,865	$186.43	$173.30 - $207.83
Q3 2025	6,041	$1,217	$204.01	$193.16 - $217.79
Q2 2025	6,120	$1,338	$223.19	$207.03 - $245.83
Q1 2025	6,099	$1,488	$223.35	$202.92 - $243.01
Q4 2024	6,466	$1,373	$217.77	$205.01 - $231.80
Q3 2024	7,391	$1,649	$216.92	$203.69 - $227.83
Q2 2024	7,391	$1,557	$200.17	$190.69 - $211.90
Q1 2024	7,615	$1,569	$193.37	$182.28 - $203.67
Q4 2023	7,660	$1,451	$186.95	$177.61 - $196.74
Q3 2023	8,140	$1,549	$184.60	$176.10 - $192.52
Q2 2023	8,695	$1,635	$170.44	$158.35 - $182.02
Q1 2023	8,720	$1,452	$159.32	$144.98 - $169.70
Q4 2022	9,295	$1,538	$155.95	$140.95 - $169.03
Q3 2022	9,345	$1,395	$152.34	$138.65 - $166.00
Q2 2022	9,345	$1,451	$151.71	$135.36 - $173.83
Q1 2022	9,745	$1,643	$148.65	$134.43 - $164.01
Q4 2021	9,845	$1,711	$156.21	$141.53 - $165.13
Q3 2021	10,095	$1,529	$141.63	$128.41 - $152.48
Q2 2021	10,190	$1,434	$125.21	$112.59 - $132.40
Q1 2021	10,456	$1,306	$107.02	$98.83 - $113.89
Q4 2020	10,445	$1,222	$105.23	$94.36 - $110.82
Q3 2020	10,445	$1,198	$105.63	$97.93 - $111.90
Q2 2020	10,645	$1,143	$93.00	$71.99 - $103.18
Q1 2020	10,735	$928	$97.35	$67.78 - $109.87
Q4 2019	11,285	$1,257	$95.06	$86.01 - $104.01
Q3 2019	11,315	$1,132	$90.54	$85.70 - $93.91
Q2 2019	11,360	$1,133	$86.29	$82.49 - $90.62
Q1 2019	11,760	$1,104	$79.33	$69.39 - $85.50
Q4 2018	12,660	$1,010	$74.46	$66.23 - $80.27
Q3 2018	12,660	$1,047	$75.30	$71.83 - $78.35
Q2 2018	12,760	$1,046	$72.21	$69.38 - $74.98
Q1 2018	12,960	$1,070	$72.87	$69.13 - $75.89
Q4 2017	13,160	$1,071	$72.87	$70.08 - $76.08
Q3 2017	14,900	$1,249	$69.18	$66.77 - $73.79
Q2 2017	16,244	$1,266	$65.59	$62.21 - $70.09
Q1 2017	16,724	$1,236	$61.73	$57.29 - $65.47
Q4 2016	16,824	$1,137	$57.67	$53.49 - $60.18
Q3 2016	18,084	$1,216	$57.32	$55.91 - $58.65
Q2 2016	18,084	$1,238	$54.66	$50.84 - $58.55
Q1 2016	19,284	$1,172	$47.39	$42.68 - $51.78
Q4 2015	19,284	$1,069	$46.40	$42.63 - $48.51
Q3 2015	24,284	$1,268	$46.73	$42.51 - $49.38
Q2 2015	26,084	$1,479	$48.09	$46.11 - $50.08
Q1 2015	26,184	$1,469	$46.67	$44.22 - $48.27
Q4 2014	27,023	$1,547	$45.21	$40.02 - $48.56
Q3 2014	27,594	$1,444	$42.74	$40.97 - $44.10
Q2 2014	27,594	$1,430	$40.50	$38.06 - $42.84
Q1 2014	27,555	$1,358	$38.81	$35.81 - $41.06
Q4 2013	27,555	$1,333	$37.39	$33.79 - $39.29
Q3 2013	28,178	$1,227	$33.72	$31.78 - $35.90
Q2 2013	28,178	$1,125	$31.19	$29.36 - $33.32