ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q4 2025
Shares 132,269 Value ($000) $34,723 Avg Close $265.71 Range $251.04 - $281.41
Q3 2025
Shares 134,328 Value ($000) $36,787 Avg Close $270.32 Range $253.71 - $284.56
Q2 2025
Shares 136,285 Value ($000) $36,721 Avg Close $252.35 Range $219.93 - $269.19
Q1 2025
Shares 174,611 Value ($000) $44,267 Avg Close $249.61 Range $225.31 - $270.90
Q4 2024
Shares 164,303 Value ($000) $38,499 Avg Close $245.53 Range $230.70 - $259.26
Q3 2024
Shares 249,287 Value ($000) $63,650 Avg Close $241.07 Range $217.65 - $253.31
Q2 2024
Shares 283,543 Value ($000) $67,483 Avg Close $227.14 Range $213.29 - $242.24
Q1 2024
Shares 256,004 Value ($000) $59,111 Avg Close $207.94 Range $189.63 - $227.85
Q4 2023
Shares 179,237 Value ($000) $35,552 Avg Close $175.85 Range $153.18 - $197.06
Q3 2023
Shares 136,346 Value ($000) $23,097 Avg Close $177.30 Range $163.22 - $186.52
Q2 2023
Shares 133,419 Value ($000) $24,908 Avg Close $167.31 Range $156.95 - $182.94
Q1 2023
Shares 158,204 Value ($000) $26,188 Avg Close $150.99 Range $139.35 - $161.29
Q4 2022
Shares 147,658 Value ($000) $21,493 Avg Close $141.81 Range $126.42 - $153.48
Q3 2022
Shares 141,483 Value ($000) $20,433 Avg Close $156.07 Range $138.29 - $171.23
Q2 2022
Shares 156,652 Value ($000) $24,087 Avg Close $158.99 Range $137.82 - $177.76
Q1 2022
Shares 144,344 Value ($000) $25,485 Avg Close $179.54 Range $147.91 - $226.74
Q4 2021
Shares 123,762 Value ($000) $29,033 Avg Close $215.53 Range $199.33 - $227.72
Q3 2021
Shares 124,613 Value ($000) $25,997 Avg Close $208.54 Range $195.25 - $219.93
Q2 2021
Shares 116,111 Value ($000) $23,915 Avg Close $206.33 Range $194.28 - $218.25
Q1 2021
Shares 121,268 Value ($000) $25,960 Avg Close $201.55 Range $190.45 - $215.84
Q4 2020
Shares 133,506 Value ($000) $28,885 Avg Close $197.47 Range $171.24 - $214.73
Q3 2020
Shares 136,241 Value ($000) $27,226 Avg Close $188.44 Range $172.53 - $201.15
Q2 2020
Shares 135,661 Value ($000) $26,990 Avg Close $182.16 Range $136.65 - $217.57
Q1 2020
Shares 127,001 Value ($000) $19,791 Avg Close $176.33 Range $117.17 - $198.13
Q4 2019
Shares 193,415 Value ($000) $37,327 Avg Close $177.67 Range $169.74 - $186.58
Q3 2019
Shares 171,762 Value ($000) $34,016 Avg Close $187.16 Range $179.22 - $195.89
Q2 2019
Shares 190,839 Value ($000) $37,679 Avg Close $173.21 Range $164.99 - $187.12
Q1 2019
Shares 234,877 Value ($000) $41,465 Avg Close $150.92 Range $131.24 - $169.66
Q4 2018
Shares 216,218 Value ($000) $31,860 Avg Close $141.48 Range $126.10 - $150.86
Q3 2018
Shares 254,468 Value ($000) $39,895 Avg Close $137.00 Range $128.06 - $148.09
Q2 2018
Shares 274,646 Value ($000) $38,541 Avg Close $132.91 Range $122.30 - $138.58
Q1 2018
Shares 272,248 Value ($000) $37,317 Avg Close $123.54 Range $115.47 - $129.02
Q4 2017
Shares 271,954 Value ($000) $36,491 Avg Close $121.85 Range $117.53 - $126.30
Q3 2017
Shares 271,993 Value ($000) $34,981 Avg Close $120.10 Range $116.11 - $122.59
Q2 2017
Shares 258,754 Value ($000) $34,350 Avg Close $117.68 Range $113.27 - $123.01
Q1 2017
Shares 203,784 Value ($000) $25,542 Avg Close $111.04 Range $106.47 - $114.69
Q4 2016
Shares 183,190 Value ($000) $21,474 Avg Close $105.98 Range $100.13 - $110.74
Q3 2016
Shares 240,414 Value ($000) $29,263 Avg Close $108.98 Range $105.46 - $112.42
Q2 2016
Shares 247,214 Value ($000) $29,320 Avg Close $104.92 Range $98.81 - $109.58
Q1 2016
Shares 261,054 Value ($000) $29,113 Avg Close $95.34 Range $88.43 - $102.02
Q4 2015
Shares 208,484 Value ($000) $23,846 Avg Close $105.21 Range $98.01 - $109.49
Q3 2015
Shares 239,594 Value ($000) $26,288 Avg Close $99.79 Range $91.88 - $104.89
Q2 2015
Shares 199,634 Value ($000) $22,573 Avg Close $102.25 Range $97.79 - $105.41
Q1 2015
Shares 202,414 Value ($000) $23,152 Avg Close $97.19 Range $86.65 - $103.73
Q4 2014
Shares 207,964 Value ($000) $21,736 Avg Close $96.70 Range $89.74 - $101.94
Q3 2014
Shares 176,094 Value ($000) $20,221 Avg Close $99.26 Range $94.57 - $104.65
Q2 2014
Shares 188,774 Value ($000) $21,018 Avg Close $94.25 Range $89.51 - $98.33
Q1 2014
Shares 178,454 Value ($000) $19,271 Avg Close $91.92 Range $85.62 - $98.30
Q4 2013
Shares 187,244 Value ($000) $19,524 Avg Close $90.95 Range $84.34 - $94.74
Q3 2013
Shares 189,600 Value ($000) $18,725 Avg Close $81.20 Range $74.57 - $86.97
Q2 2013
Shares 207,754 Value ($000) $17,699 Avg Close $73.48 Range $68.51 - $77.84