ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

NORTH STAR ASSET MANAGEMENT INC's Holding History (CIK: 0001056559)

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

Q4 2025

Shares 79,933 Value ($000) $20,984 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 79,187 Value ($000) $21,686 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 79,837 Value ($000) $21,511 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 79,522 Value ($000) $20,160 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 79,747 Value ($000) $18,686 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 79,943 Value ($000) $20,412 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 79,614 Value ($000) $18,948 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 79,792 Value ($000) $18,424 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 79,758 Value ($000) $15,820 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 79,814 Value ($000) $13,520 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 75,166 Value ($000) $14,033 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 74,612 Value ($000) $12,351 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 75,095 Value ($000) $10,931 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 75,461 Value ($000) $10,898 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 75,057 Value ($000) $11,541 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 73,650 Value ($000) $13,004 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 68,667 Value ($000) $16,108 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 68,044 Value ($000) $14,195 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 68,037 Value ($000) $14,013 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 67,973 Value ($000) $14,551 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 67,005 Value ($000) $14,497 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 65,722 Value ($000) $13,134 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 63,937 Value ($000) $12,720 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 63,879 Value ($000) $9,954 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 61,994 Value ($000) $11,964 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 61,669 Value ($000) $12,213 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 62,303 Value ($000) $12,301 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 72,402 Value ($000) $12,782 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 72,982 Value ($000) $10,754 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 72,310 Value ($000) $11,337 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 71,946 Value ($000) $10,096 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 71,400 Value ($000) $9,787 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 70,198 Value ($000) $9,419 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 68,721 Value ($000) $8,838 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 67,693 Value ($000) $8,986 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 66,721 Value ($000) $8,362 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 65,998 Value ($000) $7,736 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 59,909 Value ($000) $7,292 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 59,166 Value ($000) $7,017 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 55,779 Value ($000) $6,221 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 50,097 Value ($000) $5,730 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 49,009 Value ($000) $5,378 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 45,158 Value ($000) $5,106 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 43,563 Value ($000) $4,983 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 41,918 Value ($000) $4,381 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 38,457 Value ($000) $4,416 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 39,220 Value ($000) $4,367 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 39,461 Value ($000) $4,261 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 37,994 Value ($000) $3,962 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 34,956 Value ($000) $3,452 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 31,306 Value ($000) $2,667 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	79,933	$20,984	$265.71	$251.04 - $281.41
Q3 2025	79,187	$21,686	$270.32	$253.71 - $284.56
Q2 2025	79,837	$21,511	$252.35	$219.93 - $269.19
Q1 2025	79,522	$20,160	$249.61	$225.31 - $270.90
Q4 2024	79,747	$18,686	$245.53	$230.70 - $259.26
Q3 2024	79,943	$20,412	$241.07	$217.65 - $253.31
Q2 2024	79,614	$18,948	$227.14	$213.29 - $242.24
Q1 2024	79,792	$18,424	$207.94	$189.63 - $227.85
Q4 2023	79,758	$15,820	$175.85	$153.18 - $197.06
Q3 2023	79,814	$13,520	$177.30	$163.22 - $186.52
Q2 2023	75,166	$14,033	$167.31	$156.95 - $182.94
Q1 2023	74,612	$12,351	$150.99	$139.35 - $161.29
Q4 2022	75,095	$10,931	$141.81	$126.42 - $153.48
Q3 2022	75,461	$10,898	$156.07	$138.29 - $171.23
Q2 2022	75,057	$11,541	$158.99	$137.82 - $177.76
Q1 2022	73,650	$13,004	$179.54	$147.91 - $226.74
Q4 2021	68,667	$16,108	$215.53	$199.33 - $227.72
Q3 2021	68,044	$14,195	$208.54	$195.25 - $219.93
Q2 2021	68,037	$14,013	$206.33	$194.28 - $218.25
Q1 2021	67,973	$14,551	$201.55	$190.45 - $215.84
Q4 2020	67,005	$14,497	$197.47	$171.24 - $214.73
Q3 2020	65,722	$13,134	$188.44	$172.53 - $201.15
Q2 2020	63,937	$12,720	$182.16	$136.65 - $217.57
Q1 2020	63,879	$9,954	$176.33	$117.17 - $198.13
Q4 2019	61,994	$11,964	$177.67	$169.74 - $186.58
Q3 2019	61,669	$12,213	$187.16	$179.22 - $195.89
Q2 2019	62,303	$12,301	$173.21	$164.99 - $187.12
Q1 2019	72,402	$12,782	$150.92	$131.24 - $169.66
Q4 2018	72,982	$10,754	$141.48	$126.10 - $150.86
Q3 2018	72,310	$11,337	$137.00	$128.06 - $148.09
Q2 2018	71,946	$10,096	$132.91	$122.30 - $138.58
Q1 2018	71,400	$9,787	$123.54	$115.47 - $129.02
Q4 2017	70,198	$9,419	$121.85	$117.53 - $126.30
Q3 2017	68,721	$8,838	$120.10	$116.11 - $122.59
Q2 2017	67,693	$8,986	$117.68	$113.27 - $123.01
Q1 2017	66,721	$8,362	$111.04	$106.47 - $114.69
Q4 2016	65,998	$7,736	$105.98	$100.13 - $110.74
Q3 2016	59,909	$7,292	$108.98	$105.46 - $112.42
Q2 2016	59,166	$7,017	$104.92	$98.81 - $109.58
Q1 2016	55,779	$6,221	$95.34	$88.43 - $102.02
Q4 2015	50,097	$5,730	$105.21	$98.01 - $109.49
Q3 2015	49,009	$5,378	$99.79	$91.88 - $104.89
Q2 2015	45,158	$5,106	$102.25	$97.79 - $105.41
Q1 2015	43,563	$4,983	$97.19	$86.65 - $103.73
Q4 2014	41,918	$4,381	$96.70	$89.74 - $101.94
Q3 2014	38,457	$4,416	$99.26	$94.57 - $104.65
Q2 2014	39,220	$4,367	$94.25	$89.51 - $98.33
Q1 2014	39,461	$4,261	$91.92	$85.62 - $98.30
Q4 2013	37,994	$3,962	$90.95	$84.34 - $94.74
Q3 2013	34,956	$3,452	$81.20	$74.57 - $86.97
Q2 2013	31,306	$2,667	$73.48	$68.51 - $77.84