ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

CONNING INC.'s Holding History (CIK: 0000801051)

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

Q4 2025

Shares 18,788 Value ($000) $4,932 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 16,832 Value ($000) $4,610 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 17,874 Value ($000) $4,816 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 16,842 Value ($000) $4,270 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 20,554 Value ($000) $4,816 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 19,742 Value ($000) $5,041 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 18,792 Value ($000) $4,472 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 21,360 Value ($000) $4,932 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 1,876 Value ($000) $372 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 1,846 Value ($000) $313 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 1,886 Value ($000) $352 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 2,116 Value ($000) $350 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 2,138 Value ($000) $311 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 2,145 Value ($000) $310 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 2,355 Value ($000) $362 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 39,376 Value ($000) $6,952 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 31,222 Value ($000) $7,324 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 2,923 Value ($000) $610 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 3,083 Value ($000) $635 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 3,428 Value ($000) $734 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 3,718 Value ($000) $804 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 3,848 Value ($000) $769 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 3,778 Value ($000) $752 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 4,025 Value ($000) $627 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 4,024 Value ($000) $777 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 4,263 Value ($000) $844 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 4,213 Value ($000) $832 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 4,862 Value ($000) $858 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 4,882 Value ($000) $719 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 5,522 Value ($000) $866 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 5,877 Value ($000) $825 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 6,107 Value ($000) $837 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 6,237 Value ($000) $837 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 6,317 Value ($000) $812 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 6,427 Value ($000) $853 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 6,427 Value ($000) $806 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 6,536 Value ($000) $766 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 6,466 Value ($000) $787 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 6,516 Value ($000) $773 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 6,496 Value ($000) $724 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 6,486 Value ($000) $742 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 6,856 Value ($000) $752 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 7,546 Value ($000) $853 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 7,616 Value ($000) $871 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 7,656 Value ($000) $800 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 7,826 Value ($000) $899 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 7,766 Value ($000) $865 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 8,176 Value ($000) $883 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 7,786 Value ($000) $812 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 6,366 Value ($000) $629 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 6,306 Value ($000) $537 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,788	$4,932	$265.71	$251.04 - $281.41
Q3 2025	16,832	$4,610	$270.32	$253.71 - $284.56
Q2 2025	17,874	$4,816	$252.35	$219.93 - $269.19
Q1 2025	16,842	$4,270	$249.61	$225.31 - $270.90
Q4 2024	20,554	$4,816	$245.53	$230.70 - $259.26
Q3 2024	19,742	$5,041	$241.07	$217.65 - $253.31
Q2 2024	18,792	$4,472	$227.14	$213.29 - $242.24
Q1 2024	21,360	$4,932	$207.94	$189.63 - $227.85
Q4 2023	1,876	$372	$175.85	$153.18 - $197.06
Q3 2023	1,846	$313	$177.30	$163.22 - $186.52
Q2 2023	1,886	$352	$167.31	$156.95 - $182.94
Q1 2023	2,116	$350	$150.99	$139.35 - $161.29
Q4 2022	2,138	$311	$141.81	$126.42 - $153.48
Q3 2022	2,145	$310	$156.07	$138.29 - $171.23
Q2 2022	2,355	$362	$158.99	$137.82 - $177.76
Q1 2022	39,376	$6,952	$179.54	$147.91 - $226.74
Q4 2021	31,222	$7,324	$215.53	$199.33 - $227.72
Q3 2021	2,923	$610	$208.54	$195.25 - $219.93
Q2 2021	3,083	$635	$206.33	$194.28 - $218.25
Q1 2021	3,428	$734	$201.55	$190.45 - $215.84
Q4 2020	3,718	$804	$197.47	$171.24 - $214.73
Q3 2020	3,848	$769	$188.44	$172.53 - $201.15
Q2 2020	3,778	$752	$182.16	$136.65 - $217.57
Q1 2020	4,025	$627	$176.33	$117.17 - $198.13
Q4 2019	4,024	$777	$177.67	$169.74 - $186.58
Q3 2019	4,263	$844	$187.16	$179.22 - $195.89
Q2 2019	4,213	$832	$173.21	$164.99 - $187.12
Q1 2019	4,862	$858	$150.92	$131.24 - $169.66
Q4 2018	4,882	$719	$141.48	$126.10 - $150.86
Q3 2018	5,522	$866	$137.00	$128.06 - $148.09
Q2 2018	5,877	$825	$132.91	$122.30 - $138.58
Q1 2018	6,107	$837	$123.54	$115.47 - $129.02
Q4 2017	6,237	$837	$121.85	$117.53 - $126.30
Q3 2017	6,317	$812	$120.10	$116.11 - $122.59
Q2 2017	6,427	$853	$117.68	$113.27 - $123.01
Q1 2017	6,427	$806	$111.04	$106.47 - $114.69
Q4 2016	6,536	$766	$105.98	$100.13 - $110.74
Q3 2016	6,466	$787	$108.98	$105.46 - $112.42
Q2 2016	6,516	$773	$104.92	$98.81 - $109.58
Q1 2016	6,496	$724	$95.34	$88.43 - $102.02
Q4 2015	6,486	$742	$105.21	$98.01 - $109.49
Q3 2015	6,856	$752	$99.79	$91.88 - $104.89
Q2 2015	7,546	$853	$102.25	$97.79 - $105.41
Q1 2015	7,616	$871	$97.19	$86.65 - $103.73
Q4 2014	7,656	$800	$96.70	$89.74 - $101.94
Q3 2014	7,826	$899	$99.26	$94.57 - $104.65
Q2 2014	7,766	$865	$94.25	$89.51 - $98.33
Q1 2014	8,176	$883	$91.92	$85.62 - $98.30
Q4 2013	7,786	$812	$90.95	$84.34 - $94.74
Q3 2013	6,366	$629	$81.20	$74.57 - $86.97
Q2 2013	6,306	$537	$73.48	$68.51 - $77.84