ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

GW&K Investment Management, LLC's Holding History (CIK: 0001082917)

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

Q4 2025

Shares 131 Value ($000) $0 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 133 Value ($000) $0 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 126 Value ($000) $0 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 127 Value ($000) $0 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 121 Value ($000) $0 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 119 Value ($000) $0 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 113 Value ($000) $0 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 90 Value ($000) $0 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 93 Value ($000) $0 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 74 Value ($000) $0 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 72 Value ($000) $0 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 2 Value ($000) $0 Avg Close $150.99 Range $139.35 - $161.29

Q2 2022

Shares 38 Value ($000) $6 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 29 Value ($000) $5 Avg Close $179.54 Range $147.91 - $226.74

Q3 2021

Shares 391 Value ($000) $82 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 34,247 Value ($000) $7,054 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 165,062 Value ($000) $35,335 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 167,140 Value ($000) $36,162 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 168,478 Value ($000) $33,669 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 170,653 Value ($000) $33,951 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 187,196 Value ($000) $29,171 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 189,358 Value ($000) $36,544 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 189,863 Value ($000) $37,600 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 189,318 Value ($000) $37,379 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 192,752 Value ($000) $34,028 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 192,659 Value ($000) $28,388 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 115,877 Value ($000) $18,167 Avg Close $137.00 Range $128.06 - $148.09

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	131	$0	$265.71	$251.04 - $281.41
Q3 2025	133	$0	$270.32	$253.71 - $284.56
Q2 2025	126	$0	$252.35	$219.93 - $269.19
Q1 2025	127	$0	$249.61	$225.31 - $270.90
Q4 2024	121	$0	$245.53	$230.70 - $259.26
Q3 2024	119	$0	$241.07	$217.65 - $253.31
Q2 2024	113	$0	$227.14	$213.29 - $242.24
Q1 2024	90	$0	$207.94	$189.63 - $227.85
Q4 2023	93	$0	$175.85	$153.18 - $197.06
Q3 2023	74	$0	$177.30	$163.22 - $186.52
Q2 2023	72	$0	$167.31	$156.95 - $182.94
Q1 2023	2	$0	$150.99	$139.35 - $161.29
Q2 2022	38	$6	$158.99	$137.82 - $177.76
Q1 2022	29	$5	$179.54	$147.91 - $226.74
Q3 2021	391	$82	$208.54	$195.25 - $219.93
Q2 2021	34,247	$7,054	$206.33	$194.28 - $218.25
Q1 2021	165,062	$35,335	$201.55	$190.45 - $215.84
Q4 2020	167,140	$36,162	$197.47	$171.24 - $214.73
Q3 2020	168,478	$33,669	$188.44	$172.53 - $201.15
Q2 2020	170,653	$33,951	$182.16	$136.65 - $217.57
Q1 2020	187,196	$29,171	$176.33	$117.17 - $198.13
Q4 2019	189,358	$36,544	$177.67	$169.74 - $186.58
Q3 2019	189,863	$37,600	$187.16	$179.22 - $195.89
Q2 2019	189,318	$37,379	$173.21	$164.99 - $187.12
Q1 2019	192,752	$34,028	$150.92	$131.24 - $169.66
Q4 2018	192,659	$28,388	$141.48	$126.10 - $150.86
Q3 2018	115,877	$18,167	$137.00	$128.06 - $148.09