CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 93,718 Value ($000) $21,975 Avg Close $228.49 Range $201.34 - $248.07

Q3 2025

Shares 65,644 Value ($000) $15,244 Avg Close $236.75 Range $218.46 - $251.43

Q2 2025

Shares 39,014 Value ($000) $9,019 Avg Close $218.92 Range $178.29 - $235.43

Q1 2025

Shares 39,265 Value ($000) $7,739 Avg Close $218.84 Range $186.54 - $247.51

Q4 2024

Shares 41,410 Value ($000) $9,530 Avg Close $248.40 Range $220.10 - $267.11

Q3 2024

Shares 40,629 Value ($000) $9,687 Avg Close $235.10 Range $217.36 - $251.65

Q2 2024

Shares 36,569 Value ($000) $8,394 Avg Close $209.64 Range $189.32 - $231.15

Q1 2024

Shares 34,246 Value ($000) $6,926 Avg Close $179.73 Range $161.39 - $202.58

Q4 2023

Shares 33,615 Value ($000) $5,924 Avg Close $164.14 Range $132.92 - $179.49

Q3 2023

Shares 34,372 Value ($000) $5,800 Avg Close $168.59 Range $160.37 - $178.33

Q2 2023

Shares 60,966 Value ($000) $10,036 Avg Close $146.18 Range $129.70 - $164.80

Q1 2023

Shares 17,054 Value ($000) $2,434 Avg Close $130.22 Range $110.96 - $144.20

Q4 2022

Shares 31,294 Value ($000) $3,612 Avg Close $116.83 Range $109.07 - $125.41

Q3 2022

Shares 61,730 Value ($000) $7,188 Avg Close $107.08 Range $83.56 - $124.49

Q2 2022

Shares 21,135 Value ($000) $1,872 Avg Close $96.49 Range $81.56 - $115.00

Q1 2022

Shares 18,204 Value ($000) $2,050 Avg Close $98.73 Range $87.11 - $113.71

Q4 2021

Shares 25,179 Value ($000) $2,494 Avg Close $105.37 Range $90.25 - $118.89

Q3 2021

Shares 489,086 Value ($000) $51,614 Avg Close $98.39 Range $89.03 - $106.90

Q2 2021

Shares 499,619 Value ($000) $45,435 Avg Close $90.87 Range $83.56 - $96.47

Q1 2021

Shares 401,438 Value ($000) $35,376 Avg Close $84.13 Range $73.69 - $91.94

Q4 2020

Shares 318,803 Value ($000) $26,155 Avg Close $67.02 Range $52.22 - $77.16

Q3 2020

Shares 410,020 Value ($000) $23,696 Avg Close $59.23 Range $52.29 - $67.07

Q2 2020

Shares 476,022 Value ($000) $26,175 Avg Close $55.73 Range $44.36 - $71.22

Q1 2020

Shares 220,755 Value ($000) $10,723 Avg Close $73.03 Range $29.45 - $88.40

Q4 2019

Shares 25,501 Value ($000) $2,187 Avg Close $81.27 Range $71.31 - $88.01

Q3 2019

Shares 21,791 Value ($000) $1,682 Avg Close $73.96 Range $67.83 - $80.06

Q2 2019

Shares 26,115 Value ($000) $1,856 Avg Close $69.62 Range $62.54 - $77.24

Q1 2019

Shares 28,848 Value ($000) $2,064 Avg Close $61.79 Range $48.13 - $72.26

Q4 2018

Shares 33,048 Value ($000) $1,632 Avg Close $62.29 Range $46.21 - $72.46

Q3 2018

Shares 37,613 Value ($000) $2,694 Avg Close $63.60 Range $54.90 - $72.50

Q2 2018

Shares 54,791 Value ($000) $3,043 Avg Close $51.36 Range $44.75 - $56.00

Q1 2018

Shares 48,462 Value ($000) $2,367 Avg Close $52.41 Range $46.62 - $57.97

Q4 2017

Shares 46,499 Value ($000) $2,521 Avg Close $54.14 Range $51.43 - $58.22

Q3 2017

Shares 35,195 Value ($000) $1,996 Avg Close $54.44 Range $49.63 - $58.28

Q2 2017

Shares 1,602 Value ($000) $89 Avg Close $57.50 Range $53.17 - $61.62

Q1 2017

Shares 1,801 Value ($000) $100 Avg Close $55.34 Range $52.77 - $59.17

Q4 2016

Shares 2,043 Value ($000) $109 Avg Close $50.41 Range $43.03 - $58.23

Q3 2016

Shares 2,043 Value ($000) $98 Avg Close $49.57 Range $44.91 - $53.79

Q2 2016

Shares 2,110 Value ($000) $111 Avg Close $50.01 Range $46.40 - $54.54

Q1 2016

Shares 2,588 Value ($000) $128 Avg Close $43.78 Range $37.09 - $49.97

Q4 2015

Shares 1,099 Value ($000) $46 Avg Close $43.45 Range $39.89 - $48.05

Q3 2015

Shares 1,078 Value ($000) $47 Avg Close $49.63 Range $43.00 - $54.31

Q2 2015

Shares 6,158 Value ($000) $331 Avg Close $55.82 Range $50.65 - $59.29

Q1 2015

Shares 201,274 Value ($000) $11,428 Avg Close $51.78 Range $44.70 - $58.44

Q4 2014

Shares 164,269 Value ($000) $7,893 Avg Close $48.74 Range $43.05 - $53.84

Q3 2014

Shares 181,775 Value ($000) $9,802 Avg Close $58.81 Range $53.66 - $65.53

Q2 2014

Shares 191,705 Value ($000) $12,317 Avg Close $59.46 Range $52.02 - $64.30

Q1 2014

Shares 176,738 Value ($000) $9,684 Avg Close $54.49 Range $44.95 - $60.47

Q4 2013

Shares 2,019 Value ($000) $121 Avg Close $57.66 Range $51.77 - $64.12

Q3 2013

Shares 1,867 Value ($000) $109 Avg Close $55.80 Range $50.23 - $59.80

Q2 2013

Shares 4,450 Value ($000) $225 Avg Close $55.73 Range $50.37 - $61.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	93,718	$21,975	$228.49	$201.34 - $248.07
Q3 2025	65,644	$15,244	$236.75	$218.46 - $251.43
Q2 2025	39,014	$9,019	$218.92	$178.29 - $235.43
Q1 2025	39,265	$7,739	$218.84	$186.54 - $247.51
Q4 2024	41,410	$9,530	$248.40	$220.10 - $267.11
Q3 2024	40,629	$9,687	$235.10	$217.36 - $251.65
Q2 2024	36,569	$8,394	$209.64	$189.32 - $231.15
Q1 2024	34,246	$6,926	$179.73	$161.39 - $202.58
Q4 2023	33,615	$5,924	$164.14	$132.92 - $179.49
Q3 2023	34,372	$5,800	$168.59	$160.37 - $178.33
Q2 2023	60,966	$10,036	$146.18	$129.70 - $164.80
Q1 2023	17,054	$2,434	$130.22	$110.96 - $144.20
Q4 2022	31,294	$3,612	$116.83	$109.07 - $125.41
Q3 2022	61,730	$7,188	$107.08	$83.56 - $124.49
Q2 2022	21,135	$1,872	$96.49	$81.56 - $115.00
Q1 2022	18,204	$2,050	$98.73	$87.11 - $113.71
Q4 2021	25,179	$2,494	$105.37	$90.25 - $118.89
Q3 2021	489,086	$51,614	$98.39	$89.03 - $106.90
Q2 2021	499,619	$45,435	$90.87	$83.56 - $96.47
Q1 2021	401,438	$35,376	$84.13	$73.69 - $91.94
Q4 2020	318,803	$26,155	$67.02	$52.22 - $77.16
Q3 2020	410,020	$23,696	$59.23	$52.29 - $67.07
Q2 2020	476,022	$26,175	$55.73	$44.36 - $71.22
Q1 2020	220,755	$10,723	$73.03	$29.45 - $88.40
Q4 2019	25,501	$2,187	$81.27	$71.31 - $88.01
Q3 2019	21,791	$1,682	$73.96	$67.83 - $80.06
Q2 2019	26,115	$1,856	$69.62	$62.54 - $77.24
Q1 2019	28,848	$2,064	$61.79	$48.13 - $72.26
Q4 2018	33,048	$1,632	$62.29	$46.21 - $72.46
Q3 2018	37,613	$2,694	$63.60	$54.90 - $72.50
Q2 2018	54,791	$3,043	$51.36	$44.75 - $56.00
Q1 2018	48,462	$2,367	$52.41	$46.62 - $57.97
Q4 2017	46,499	$2,521	$54.14	$51.43 - $58.22
Q3 2017	35,195	$1,996	$54.44	$49.63 - $58.28
Q2 2017	1,602	$89	$57.50	$53.17 - $61.62
Q1 2017	1,801	$100	$55.34	$52.77 - $59.17
Q4 2016	2,043	$109	$50.41	$43.03 - $58.23
Q3 2016	2,043	$98	$49.57	$44.91 - $53.79
Q2 2016	2,110	$111	$50.01	$46.40 - $54.54
Q1 2016	2,588	$128	$43.78	$37.09 - $49.97
Q4 2015	1,099	$46	$43.45	$39.89 - $48.05
Q3 2015	1,078	$47	$49.63	$43.00 - $54.31
Q2 2015	6,158	$331	$55.82	$50.65 - $59.29
Q1 2015	201,274	$11,428	$51.78	$44.70 - $58.44
Q4 2014	164,269	$7,893	$48.74	$43.05 - $53.84
Q3 2014	181,775	$9,802	$58.81	$53.66 - $65.53
Q2 2014	191,705	$12,317	$59.46	$52.02 - $64.30
Q1 2014	176,738	$9,684	$54.49	$44.95 - $60.47
Q4 2013	2,019	$121	$57.66	$51.77 - $64.12
Q3 2013	1,867	$109	$55.80	$50.23 - $59.80
Q2 2013	4,450	$225	$55.73	$50.37 - $61.28