ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q4 2025
Shares 39,951 Value ($000) $10,488 Avg Close $265.71 Range $251.04 - $281.41
Q3 2025
Shares 38,683 Value ($000) $10,594 Avg Close $270.32 Range $253.71 - $284.56
Q2 2025
Shares 38,741 Value ($000) $10,438 Avg Close $252.35 Range $219.93 - $269.19
Q1 2025
Shares 39,467 Value ($000) $10,006 Avg Close $249.61 Range $225.31 - $270.90
Q4 2024
Shares 40,912 Value ($000) $9,587 Avg Close $245.53 Range $230.70 - $259.26
Q3 2024
Shares 41,547 Value ($000) $10,608 Avg Close $241.07 Range $217.65 - $253.31
Q2 2024
Shares 41,233 Value ($000) $9,813 Avg Close $227.14 Range $213.29 - $242.24
Q1 2024
Shares 41,160 Value ($000) $9,504 Avg Close $207.94 Range $189.63 - $227.85
Q4 2023
Shares 41,295 Value ($000) $8,191 Avg Close $175.85 Range $153.18 - $197.06
Q3 2023
Shares 41,455 Value ($000) $7,022 Avg Close $177.30 Range $163.22 - $186.52
Q2 2023
Shares 41,725 Value ($000) $7,790 Avg Close $167.31 Range $156.95 - $182.94
Q1 2023
Shares 42,530 Value ($000) $7,040 Avg Close $150.99 Range $139.35 - $161.29
Q4 2022
Shares 42,620 Value ($000) $6,204 Avg Close $141.81 Range $126.42 - $153.48
Q3 2022
Shares 42,669 Value ($000) $6,162 Avg Close $156.07 Range $138.29 - $171.23
Q2 2022
Shares 42,759 Value ($000) $6,575 Avg Close $158.99 Range $137.82 - $177.76
Q1 2022
Shares 42,944 Value ($000) $7,701 Avg Close $179.54 Range $147.91 - $226.74
Q4 2021
Shares 43,779 Value ($000) $10,270 Avg Close $215.53 Range $199.33 - $227.72
Q3 2021
Shares 43,889 Value ($000) $9,156 Avg Close $208.54 Range $195.25 - $219.93
Q2 2021
Shares 44,034 Value ($000) $9,070 Avg Close $206.33 Range $194.28 - $218.25
Q1 2021
Shares 44,349 Value ($000) $9,707 Avg Close $201.55 Range $190.45 - $215.84
Q4 2020
Shares 44,134 Value ($000) $9,549 Avg Close $197.47 Range $171.24 - $214.73
Q3 2020
Shares 44,649 Value ($000) $8,923 Avg Close $188.44 Range $172.53 - $201.15
Q2 2020
Shares 86,259 Value ($000) $17,161 Avg Close $182.16 Range $136.65 - $217.57
Q1 2020
Shares 88,179 Value ($000) $13,741 Avg Close $176.33 Range $117.17 - $198.13
Q4 2019
Shares 93,302 Value ($000) $18,006 Avg Close $177.67 Range $169.74 - $186.58
Q3 2019
Shares 92,997 Value ($000) $18,417 Avg Close $187.16 Range $179.22 - $195.89
Q2 2019
Shares 97,312 Value ($000) $19,213 Avg Close $173.21 Range $164.99 - $187.12
Q1 2019
Shares 98,507 Value ($000) $17,390 Avg Close $150.92 Range $131.24 - $169.66
Q4 2018
Shares 99,457 Value ($000) $14,655 Avg Close $141.48 Range $126.10 - $150.86
Q3 2018
Shares 106,492 Value ($000) $16,696 Avg Close $137.00 Range $128.06 - $148.09
Q2 2018
Shares 105,697 Value ($000) $14,832 Avg Close $132.91 Range $122.30 - $138.58
Q1 2018
Shares 105,912 Value ($000) $14,517 Avg Close $123.54 Range $115.47 - $129.02
Q4 2017
Shares 111,202 Value ($000) $14,921 Avg Close $121.85 Range $117.53 - $126.30
Q3 2017
Shares 114,087 Value ($000) $14,673 Avg Close $120.10 Range $116.11 - $122.59
Q2 2017
Shares 114,210 Value ($000) $15,161 Avg Close $117.68 Range $113.27 - $123.01
Q1 2017
Shares 113,180 Value ($000) $14,186 Avg Close $111.04 Range $106.47 - $114.69
Q4 2016
Shares 114,865 Value ($000) $13,464 Avg Close $105.98 Range $100.13 - $110.74
Q3 2016
Shares 116,260 Value ($000) $14,151 Avg Close $108.98 Range $105.46 - $112.42
Q2 2016
Shares 116,810 Value ($000) $13,854 Avg Close $104.92 Range $98.81 - $109.58
Q1 2016
Shares 117,500 Value ($000) $13,104 Avg Close $95.34 Range $88.43 - $102.02
Q4 2015
Shares 115,173 Value ($000) $13,173 Avg Close $105.21 Range $98.01 - $109.49
Q3 2015
Shares 132,658 Value ($000) $14,555 Avg Close $99.79 Range $91.88 - $104.89
Q2 2015
Shares 132,085 Value ($000) $14,935 Avg Close $102.25 Range $97.79 - $105.41
Q1 2015
Shares 133,520 Value ($000) $15,272 Avg Close $97.19 Range $86.65 - $103.73
Q4 2014
Shares 164,250 Value ($000) $17,167 Avg Close $96.70 Range $89.74 - $101.94
Q3 2014
Shares 164,565 Value ($000) $18,897 Avg Close $99.26 Range $94.57 - $104.65
Q2 2014
Shares 166,205 Value ($000) $18,505 Avg Close $94.25 Range $89.51 - $98.33
Q1 2014
Shares 168,700 Value ($000) $18,218 Avg Close $91.92 Range $85.62 - $98.30
Q4 2013
Shares 169,855 Value ($000) $17,711 Avg Close $90.95 Range $84.34 - $94.74
Q3 2013
Shares 171,500 Value ($000) $16,937 Avg Close $81.20 Range $74.57 - $86.97
Q2 2013
Shares 171,075 Value ($000) $14,574 Avg Close $73.48 Range $68.51 - $77.84