ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q4 2025

Shares 709,923 Value ($000) $186,369 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 787,340 Value ($000) $215,621 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 822,056 Value ($000) $221,495 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 833,428 Value ($000) $211,291 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 892,902 Value ($000) $209,225 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 912,565 Value ($000) $233,005 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 1,012,767 Value ($000) $241,039 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 1,112,852 Value ($000) $256,958 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 1,142,396 Value ($000) $226,594 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 1,209,953 Value ($000) $204,966 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 1,218,671 Value ($000) $227,514 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 1,273,489 Value ($000) $210,801 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 1,255,185 Value ($000) $182,705 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 1,288,336 Value ($000) $186,062 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 1,319,269 Value ($000) $202,851 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 1,217,256 Value ($000) $214,919 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 1,218,933 Value ($000) $285,950 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 1,278,401 Value ($000) $266,700 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 1,233,028 Value ($000) $253,967 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 1,232,481 Value ($000) $263,837 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 1,222,221 Value ($000) $264,440 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 1,205,444 Value ($000) $240,896 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 1,138,308 Value ($000) $226,466 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 1,127,572 Value ($000) $175,710 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 1,195,659 Value ($000) $230,750 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 1,203,640 Value ($000) $238,369 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 1,195,415 Value ($000) $236,023 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 1,197,267 Value ($000) $211,365 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 1,170,846 Value ($000) $172,524 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 1,310,489 Value ($000) $205,458 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 1,308,740 Value ($000) $183,656 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 1,317,531 Value ($000) $180,594 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 1,221,263 Value ($000) $163,869 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 1,200,905 Value ($000) $154,448 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 1,122,122 Value ($000) $148,962 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 1,145,281 Value ($000) $143,550 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 1,062,225 Value ($000) $124,514 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 1,056,974 Value ($000) $128,655 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 1,044,383 Value ($000) $123,864 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 1,038,671 Value ($000) $115,833 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 1,047,236 Value ($000) $119,783 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 1,061,608 Value ($000) $116,480 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 1,003,663 Value ($000) $113,484 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 1,103,073 Value ($000) $126,170 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 1,115,549 Value ($000) $116,597 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 1,031,000 Value ($000) $118,390 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 1,091,250 Value ($000) $121,500 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 1,102,159 Value ($000) $119,022 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 1,104,656 Value ($000) $115,182 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 1,088,575 Value ($000) $107,508 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 1,094,315 Value ($000) $93,225 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	709,923	$186,369	$265.71	$251.04 - $281.41
Q3 2025	787,340	$215,621	$270.32	$253.71 - $284.56
Q2 2025	822,056	$221,495	$252.35	$219.93 - $269.19
Q1 2025	833,428	$211,291	$249.61	$225.31 - $270.90
Q4 2024	892,902	$209,225	$245.53	$230.70 - $259.26
Q3 2024	912,565	$233,005	$241.07	$217.65 - $253.31
Q2 2024	1,012,767	$241,039	$227.14	$213.29 - $242.24
Q1 2024	1,112,852	$256,958	$207.94	$189.63 - $227.85
Q4 2023	1,142,396	$226,594	$175.85	$153.18 - $197.06
Q3 2023	1,209,953	$204,966	$177.30	$163.22 - $186.52
Q2 2023	1,218,671	$227,514	$167.31	$156.95 - $182.94
Q1 2023	1,273,489	$210,801	$150.99	$139.35 - $161.29
Q4 2022	1,255,185	$182,705	$141.81	$126.42 - $153.48
Q3 2022	1,288,336	$186,062	$156.07	$138.29 - $171.23
Q2 2022	1,319,269	$202,851	$158.99	$137.82 - $177.76
Q1 2022	1,217,256	$214,919	$179.54	$147.91 - $226.74
Q4 2021	1,218,933	$285,950	$215.53	$199.33 - $227.72
Q3 2021	1,278,401	$266,700	$208.54	$195.25 - $219.93
Q2 2021	1,233,028	$253,967	$206.33	$194.28 - $218.25
Q1 2021	1,232,481	$263,837	$201.55	$190.45 - $215.84
Q4 2020	1,222,221	$264,440	$197.47	$171.24 - $214.73
Q3 2020	1,205,444	$240,896	$188.44	$172.53 - $201.15
Q2 2020	1,138,308	$226,466	$182.16	$136.65 - $217.57
Q1 2020	1,127,572	$175,710	$176.33	$117.17 - $198.13
Q4 2019	1,195,659	$230,750	$177.67	$169.74 - $186.58
Q3 2019	1,203,640	$238,369	$187.16	$179.22 - $195.89
Q2 2019	1,195,415	$236,023	$173.21	$164.99 - $187.12
Q1 2019	1,197,267	$211,365	$150.92	$131.24 - $169.66
Q4 2018	1,170,846	$172,524	$141.48	$126.10 - $150.86
Q3 2018	1,310,489	$205,458	$137.00	$128.06 - $148.09
Q2 2018	1,308,740	$183,656	$132.91	$122.30 - $138.58
Q1 2018	1,317,531	$180,594	$123.54	$115.47 - $129.02
Q4 2017	1,221,263	$163,869	$121.85	$117.53 - $126.30
Q3 2017	1,200,905	$154,448	$120.10	$116.11 - $122.59
Q2 2017	1,122,122	$148,962	$117.68	$113.27 - $123.01
Q1 2017	1,145,281	$143,550	$111.04	$106.47 - $114.69
Q4 2016	1,062,225	$124,514	$105.98	$100.13 - $110.74
Q3 2016	1,056,974	$128,655	$108.98	$105.46 - $112.42
Q2 2016	1,044,383	$123,864	$104.92	$98.81 - $109.58
Q1 2016	1,038,671	$115,833	$95.34	$88.43 - $102.02
Q4 2015	1,047,236	$119,783	$105.21	$98.01 - $109.49
Q3 2015	1,061,608	$116,480	$99.79	$91.88 - $104.89
Q2 2015	1,003,663	$113,484	$102.25	$97.79 - $105.41
Q1 2015	1,103,073	$126,170	$97.19	$86.65 - $103.73
Q4 2014	1,115,549	$116,597	$96.70	$89.74 - $101.94
Q3 2014	1,031,000	$118,390	$99.26	$94.57 - $104.65
Q2 2014	1,091,250	$121,500	$94.25	$89.51 - $98.33
Q1 2014	1,102,159	$119,022	$91.92	$85.62 - $98.30
Q4 2013	1,104,656	$115,182	$90.95	$84.34 - $94.74
Q3 2013	1,088,575	$107,508	$81.20	$74.57 - $86.97
Q2 2013	1,094,315	$93,225	$73.48	$68.51 - $77.84