ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

FORT WASHINGTON INVESTMENT ADVISORS INC /OH/'s Holding History (CIK: 0001009016)

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

Q4 2025

Shares 5,385 Value ($000) $1,414 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 5,305 Value ($000) $1,453 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 5,057 Value ($000) $1,363 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 5,385 Value ($000) $1,365 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 5,385 Value ($000) $1,262 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 5,385 Value ($000) $1,375 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 5,385 Value ($000) $1,282 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 5,535 Value ($000) $1,278 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 5,595 Value ($000) $1,110 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 5,595 Value ($000) $948 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 5,595 Value ($000) $1,045 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 5,655 Value ($000) $936 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 5,655 Value ($000) $1 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 5,655 Value ($000) $817 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 5,655 Value ($000) $870 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 5,730 Value ($000) $1,012 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 5,780 Value ($000) $1,356 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 6,030 Value ($000) $1,258 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 6,530 Value ($000) $1,345 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 6,605 Value ($000) $1,414 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 6,836 Value ($000) $1,479 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 6,836 Value ($000) $1,366 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 6,911 Value ($000) $1,375 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 7,005 Value ($000) $1,092 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 7,105 Value ($000) $1,371 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 7,430 Value ($000) $1,471 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 7,720 Value ($000) $1,524 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 7,820 Value ($000) $1,381 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 16,095 Value ($000) $2,372 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 16,665 Value ($000) $2,613 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 17,217 Value ($000) $2,416 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 17,377 Value ($000) $2,382 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 17,902 Value ($000) $2,402 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 19,727 Value ($000) $2,537 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 21,201 Value ($000) $2,814 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 22,646 Value ($000) $2,838 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 22,486 Value ($000) $2,636 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 23,403 Value ($000) $2,849 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 24,028 Value ($000) $2,850 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 24,656 Value ($000) $2,750 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 20,730 Value ($000) $2,371 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 20,930 Value ($000) $2,296 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 21,829 Value ($000) $2,468 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 21,629 Value ($000) $2,474 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 21,253 Value ($000) $2,221 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 19,398 Value ($000) $2,227 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 18,878 Value ($000) $2,102 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 20,080 Value ($000) $2,168 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 18,255 Value ($000) $1,903 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 20,504 Value ($000) $2,025 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 22,029 Value ($000) $1,877 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,385	$1,414	$265.71	$251.04 - $281.41
Q3 2025	5,305	$1,453	$270.32	$253.71 - $284.56
Q2 2025	5,057	$1,363	$252.35	$219.93 - $269.19
Q1 2025	5,385	$1,365	$249.61	$225.31 - $270.90
Q4 2024	5,385	$1,262	$245.53	$230.70 - $259.26
Q3 2024	5,385	$1,375	$241.07	$217.65 - $253.31
Q2 2024	5,385	$1,282	$227.14	$213.29 - $242.24
Q1 2024	5,535	$1,278	$207.94	$189.63 - $227.85
Q4 2023	5,595	$1,110	$175.85	$153.18 - $197.06
Q3 2023	5,595	$948	$177.30	$163.22 - $186.52
Q2 2023	5,595	$1,045	$167.31	$156.95 - $182.94
Q1 2023	5,655	$936	$150.99	$139.35 - $161.29
Q4 2022	5,655	$1	$141.81	$126.42 - $153.48
Q3 2022	5,655	$817	$156.07	$138.29 - $171.23
Q2 2022	5,655	$870	$158.99	$137.82 - $177.76
Q1 2022	5,730	$1,012	$179.54	$147.91 - $226.74
Q4 2021	5,780	$1,356	$215.53	$199.33 - $227.72
Q3 2021	6,030	$1,258	$208.54	$195.25 - $219.93
Q2 2021	6,530	$1,345	$206.33	$194.28 - $218.25
Q1 2021	6,605	$1,414	$201.55	$190.45 - $215.84
Q4 2020	6,836	$1,479	$197.47	$171.24 - $214.73
Q3 2020	6,836	$1,366	$188.44	$172.53 - $201.15
Q2 2020	6,911	$1,375	$182.16	$136.65 - $217.57
Q1 2020	7,005	$1,092	$176.33	$117.17 - $198.13
Q4 2019	7,105	$1,371	$177.67	$169.74 - $186.58
Q3 2019	7,430	$1,471	$187.16	$179.22 - $195.89
Q2 2019	7,720	$1,524	$173.21	$164.99 - $187.12
Q1 2019	7,820	$1,381	$150.92	$131.24 - $169.66
Q4 2018	16,095	$2,372	$141.48	$126.10 - $150.86
Q3 2018	16,665	$2,613	$137.00	$128.06 - $148.09
Q2 2018	17,217	$2,416	$132.91	$122.30 - $138.58
Q1 2018	17,377	$2,382	$123.54	$115.47 - $129.02
Q4 2017	17,902	$2,402	$121.85	$117.53 - $126.30
Q3 2017	19,727	$2,537	$120.10	$116.11 - $122.59
Q2 2017	21,201	$2,814	$117.68	$113.27 - $123.01
Q1 2017	22,646	$2,838	$111.04	$106.47 - $114.69
Q4 2016	22,486	$2,636	$105.98	$100.13 - $110.74
Q3 2016	23,403	$2,849	$108.98	$105.46 - $112.42
Q2 2016	24,028	$2,850	$104.92	$98.81 - $109.58
Q1 2016	24,656	$2,750	$95.34	$88.43 - $102.02
Q4 2015	20,730	$2,371	$105.21	$98.01 - $109.49
Q3 2015	20,930	$2,296	$99.79	$91.88 - $104.89
Q2 2015	21,829	$2,468	$102.25	$97.79 - $105.41
Q1 2015	21,629	$2,474	$97.19	$86.65 - $103.73
Q4 2014	21,253	$2,221	$96.70	$89.74 - $101.94
Q3 2014	19,398	$2,227	$99.26	$94.57 - $104.65
Q2 2014	18,878	$2,102	$94.25	$89.51 - $98.33
Q1 2014	20,080	$2,168	$91.92	$85.62 - $98.30
Q4 2013	18,255	$1,903	$90.95	$84.34 - $94.74
Q3 2013	20,504	$2,025	$81.20	$74.57 - $86.97
Q2 2013	22,029	$1,877	$73.48	$68.51 - $77.84