GALLAGHER ARTHUR J & CO

Ticker: AJG CUSIP: 363576109 Class: COM

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q4 2025

Shares 3,746 Value ($000) $969 Avg Close $264.22 Range $236.34 - $312.72

Q3 2025

Shares 3,887 Value ($000) $1,204 Avg Close $300.20 Range $276.20 - $321.70

Q2 2025

Shares 3,887 Value ($000) $1,244 Avg Close $327.56 Range $299.17 - $348.85

Q1 2025

Shares 3,887 Value ($000) $1,342 Avg Close $313.31 Range $273.17 - $344.60

Q4 2024

Shares 3,880 Value ($000) $1,101 Avg Close $288.06 Range $274.49 - $313.35

Q3 2024

Shares 3,880 Value ($000) $1,092 Avg Close $278.61 Range $254.32 - $297.84

Q2 2024

Shares 3,986 Value ($000) $1,034 Avg Close $244.50 Range $226.63 - $263.02

Q1 2024

Shares 4,902 Value ($000) $1,226 Avg Close $236.41 Range $219.54 - $252.26

Q4 2023

Shares 4,902 Value ($000) $1,102 Avg Close $232.39 Range $214.82 - $249.02

Q3 2023

Shares 5,080 Value ($000) $1,158 Avg Close $219.09 Range $207.73 - $232.98

Q2 2023

Shares 5,080 Value ($000) $1,115 Avg Close $203.16 Range $185.32 - $215.79

Q1 2023

Shares 5,872 Value ($000) $1,123 Avg Close $184.71 Range $170.15 - $196.81

Q4 2022

Shares 5,900 Value ($000) $1 Avg Close $181.58 Range $163.94 - $195.97

Q3 2022

Shares 5,900 Value ($000) $1,010 Avg Close $171.86 Range $155.35 - $185.72

Q2 2022

Shares 5,928 Value ($000) $967 Avg Close $160.18 Range $143.39 - $180.33

Q1 2022

Shares 6,730 Value ($000) $1,175 Avg Close $153.40 Range $141.59 - $170.78

Q4 2021

Shares 6,880 Value ($000) $1,167 Avg Close $156.75 Range $142.44 - $164.55

Q3 2021

Shares 6,880 Value ($000) $1,023 Avg Close $136.81 Range $129.42 - $147.92

Q2 2021

Shares 6,880 Value ($000) $964 Avg Close $134.67 Range $118.24 - $146.63

Q1 2021

Shares 6,880 Value ($000) $858 Avg Close $114.59 Range $107.07 - $122.80

Q4 2020

Shares 7,257 Value ($000) $898 Avg Close $107.71 Range $96.30 - $122.43

Q3 2020

Shares 7,290 Value ($000) $770 Avg Close $97.68 Range $90.30 - $102.85

Q2 2020

Shares 7,290 Value ($000) $711 Avg Close $83.03 Range $68.97 - $96.18

Q1 2020

Shares 31,594 Value ($000) $2,575 Avg Close $89.38 Range $60.94 - $102.05

Q4 2019

Shares 31,594 Value ($000) $3,009 Avg Close $85.11 Range $79.19 - $89.69

Q3 2019

Shares 31,594 Value ($000) $2,830 Avg Close $83.14 Range $79.33 - $85.65

Q2 2019

Shares 31,721 Value ($000) $2,778 Avg Close $76.79 Range $71.30 - $81.81

Q1 2019

Shares 32,945 Value ($000) $2,573 Avg Close $70.56 Range $64.39 - $74.18

Q4 2018

Shares 32,945 Value ($000) $2,428 Avg Close $67.97 Range $62.33 - $71.85

Q3 2018

Shares 33,758 Value ($000) $2,513 Avg Close $64.92 Range $58.77 - $69.54

Q2 2018

Shares 33,758 Value ($000) $2,204 Avg Close $60.98 Range $58.35 - $63.75

Q1 2018

Shares 33,758 Value ($000) $2,320 Avg Close $60.39 Range $55.42 - $65.39

Q4 2017

Shares 33,758 Value ($000) $2,136 Avg Close $56.83 Range $54.05 - $60.12

Q3 2017

Shares 33,758 Value ($000) $2,078 Avg Close $52.01 Range $49.57 - $54.94

Q2 2017

Shares 35,072 Value ($000) $2,008 Avg Close $49.64 Range $47.74 - $52.14

Q1 2017

Shares 36,276 Value ($000) $2,051 Avg Close $48.08 Range $45.07 - $50.65

Q4 2016

Shares 37,776 Value ($000) $1,963 Avg Close $43.55 Range $40.73 - $45.38

Q3 2016

Shares 39,681 Value ($000) $2,019 Avg Close $42.42 Range $40.40 - $44.25

Q2 2016

Shares 39,681 Value ($000) $1,889 Avg Close $39.55 Range $36.70 - $41.44

Q1 2016

Shares 39,734 Value ($000) $1,767 Avg Close $33.74 Range $30.29 - $37.98

Q4 2015

Shares 39,734 Value ($000) $1,627 Avg Close $35.98 Range $33.21 - $37.20

Q3 2015

Shares 39,734 Value ($000) $1,640 Avg Close $37.63 Range $33.11 - $40.01

Q2 2015

Shares 39,734 Value ($000) $1,879 Avg Close $39.66 Range $38.04 - $40.98

Q1 2015

Shares 39,734 Value ($000) $1,858 Avg Close $38.18 Range $36.06 - $39.70

Q4 2014

Shares 39,734 Value ($000) $1,871 Avg Close $38.03 Range $35.07 - $40.13

Q3 2014

Shares 39,734 Value ($000) $1,802 Avg Close $37.00 Range $35.50 - $38.49

Q2 2014

Shares 46,351 Value ($000) $2,160 Avg Close $36.40 Range $34.22 - $38.53

Q1 2014

Shares 46,422 Value ($000) $2,209 Avg Close $36.99 Range $34.79 - $39.33

Q4 2013

Shares 48,840 Value ($000) $2,292 Avg Close $36.51 Range $34.17 - $38.03

Q3 2013

Shares 49,500 Value ($000) $2,161 Avg Close $34.24 Range $32.24 - $35.69

Q2 2013

Shares 49,219 Value ($000) $2,150 Avg Close $33.49 Range $31.26 - $35.40

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,746	$969	$264.22	$236.34 - $312.72
Q3 2025	3,887	$1,204	$300.20	$276.20 - $321.70
Q2 2025	3,887	$1,244	$327.56	$299.17 - $348.85
Q1 2025	3,887	$1,342	$313.31	$273.17 - $344.60
Q4 2024	3,880	$1,101	$288.06	$274.49 - $313.35
Q3 2024	3,880	$1,092	$278.61	$254.32 - $297.84
Q2 2024	3,986	$1,034	$244.50	$226.63 - $263.02
Q1 2024	4,902	$1,226	$236.41	$219.54 - $252.26
Q4 2023	4,902	$1,102	$232.39	$214.82 - $249.02
Q3 2023	5,080	$1,158	$219.09	$207.73 - $232.98
Q2 2023	5,080	$1,115	$203.16	$185.32 - $215.79
Q1 2023	5,872	$1,123	$184.71	$170.15 - $196.81
Q4 2022	5,900	$1	$181.58	$163.94 - $195.97
Q3 2022	5,900	$1,010	$171.86	$155.35 - $185.72
Q2 2022	5,928	$967	$160.18	$143.39 - $180.33
Q1 2022	6,730	$1,175	$153.40	$141.59 - $170.78
Q4 2021	6,880	$1,167	$156.75	$142.44 - $164.55
Q3 2021	6,880	$1,023	$136.81	$129.42 - $147.92
Q2 2021	6,880	$964	$134.67	$118.24 - $146.63
Q1 2021	6,880	$858	$114.59	$107.07 - $122.80
Q4 2020	7,257	$898	$107.71	$96.30 - $122.43
Q3 2020	7,290	$770	$97.68	$90.30 - $102.85
Q2 2020	7,290	$711	$83.03	$68.97 - $96.18
Q1 2020	31,594	$2,575	$89.38	$60.94 - $102.05
Q4 2019	31,594	$3,009	$85.11	$79.19 - $89.69
Q3 2019	31,594	$2,830	$83.14	$79.33 - $85.65
Q2 2019	31,721	$2,778	$76.79	$71.30 - $81.81
Q1 2019	32,945	$2,573	$70.56	$64.39 - $74.18
Q4 2018	32,945	$2,428	$67.97	$62.33 - $71.85
Q3 2018	33,758	$2,513	$64.92	$58.77 - $69.54
Q2 2018	33,758	$2,204	$60.98	$58.35 - $63.75
Q1 2018	33,758	$2,320	$60.39	$55.42 - $65.39
Q4 2017	33,758	$2,136	$56.83	$54.05 - $60.12
Q3 2017	33,758	$2,078	$52.01	$49.57 - $54.94
Q2 2017	35,072	$2,008	$49.64	$47.74 - $52.14
Q1 2017	36,276	$2,051	$48.08	$45.07 - $50.65
Q4 2016	37,776	$1,963	$43.55	$40.73 - $45.38
Q3 2016	39,681	$2,019	$42.42	$40.40 - $44.25
Q2 2016	39,681	$1,889	$39.55	$36.70 - $41.44
Q1 2016	39,734	$1,767	$33.74	$30.29 - $37.98
Q4 2015	39,734	$1,627	$35.98	$33.21 - $37.20
Q3 2015	39,734	$1,640	$37.63	$33.11 - $40.01
Q2 2015	39,734	$1,879	$39.66	$38.04 - $40.98
Q1 2015	39,734	$1,858	$38.18	$36.06 - $39.70
Q4 2014	39,734	$1,871	$38.03	$35.07 - $40.13
Q3 2014	39,734	$1,802	$37.00	$35.50 - $38.49
Q2 2014	46,351	$2,160	$36.40	$34.22 - $38.53
Q1 2014	46,422	$2,209	$36.99	$34.79 - $39.33
Q4 2013	48,840	$2,292	$36.51	$34.17 - $38.03
Q3 2013	49,500	$2,161	$34.24	$32.24 - $35.69
Q2 2013	49,219	$2,150	$33.49	$31.26 - $35.40