ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

FIRST NATIONAL BANK OF OMAHA's Holding History (CIK: 0000036644)

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

Q4 2025

Shares 19,796 Value ($000) $5,201 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 29,480 Value ($000) $8,073 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 30,308 Value ($000) $8,166 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 30,827 Value ($000) $7,815 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 33,245 Value ($000) $7,790 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 35,533 Value ($000) $9,073 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 36,267 Value ($000) $8,632 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 30,827 Value ($000) $7,815 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 41,865 Value ($000) $8,304 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 44,551 Value ($000) $7,547 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 46,708 Value ($000) $8,720 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 52,327 Value ($000) $8,662 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 51,226 Value ($000) $7 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 31,497 Value ($000) $4,549 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 4,818 Value ($000) $741 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 4,843 Value ($000) $855 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 4,818 Value ($000) $1,130 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 4,861 Value ($000) $1,014 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 5,441 Value ($000) $1,165 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 5,441 Value ($000) $1,165 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 5,441 Value ($000) $1,177 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 5,441 Value ($000) $1,087 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 5,591 Value ($000) $1,112 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 5,651 Value ($000) $881 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 5,728 Value ($000) $1,105 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 5,804 Value ($000) $1,149 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 6,266 Value ($000) $1,237 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 6,366 Value ($000) $1,124 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 6,582 Value ($000) $969 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 6,640 Value ($000) $1,041 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 6,732 Value ($000) $945 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 7,530 Value ($000) $1,032 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 7,630 Value ($000) $1,024 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 7,630 Value ($000) $981 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 14,907 Value ($000) $1,979 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 14,493 Value ($000) $1,816 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 12,025 Value ($000) $1,409 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 11,550 Value ($000) $1,405 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 12,350 Value ($000) $1,465 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 12,270 Value ($000) $1,369 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 11,945 Value ($000) $1,367 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 11,900 Value ($000) $1,305 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 10,780 Value ($000) $1,208 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 10,780 Value ($000) $1,208 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 10,880 Value ($000) $1,137 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 10,955 Value ($000) $1,258 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 11,030 Value ($000) $1,229 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 11,030 Value ($000) $1,191 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 10,880 Value ($000) $1,134 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 11,650 Value ($000) $1,151 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 19,670 Value ($000) $1,676 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	19,796	$5,201	$265.71	$251.04 - $281.41
Q3 2025	29,480	$8,073	$270.32	$253.71 - $284.56
Q2 2025	30,308	$8,166	$252.35	$219.93 - $269.19
Q1 2025	30,827	$7,815	$249.61	$225.31 - $270.90
Q4 2024	33,245	$7,790	$245.53	$230.70 - $259.26
Q3 2024	35,533	$9,073	$241.07	$217.65 - $253.31
Q2 2024	36,267	$8,632	$227.14	$213.29 - $242.24
Q1 2024	30,827	$7,815	$207.94	$189.63 - $227.85
Q4 2023	41,865	$8,304	$175.85	$153.18 - $197.06
Q3 2023	44,551	$7,547	$177.30	$163.22 - $186.52
Q2 2023	46,708	$8,720	$167.31	$156.95 - $182.94
Q1 2023	52,327	$8,662	$150.99	$139.35 - $161.29
Q4 2022	51,226	$7	$141.81	$126.42 - $153.48
Q3 2022	31,497	$4,549	$156.07	$138.29 - $171.23
Q2 2022	4,818	$741	$158.99	$137.82 - $177.76
Q1 2022	4,843	$855	$179.54	$147.91 - $226.74
Q4 2021	4,818	$1,130	$215.53	$199.33 - $227.72
Q3 2021	4,861	$1,014	$208.54	$195.25 - $219.93
Q2 2021	5,441	$1,165	$206.33	$194.28 - $218.25
Q1 2021	5,441	$1,165	$201.55	$190.45 - $215.84
Q4 2020	5,441	$1,177	$197.47	$171.24 - $214.73
Q3 2020	5,441	$1,087	$188.44	$172.53 - $201.15
Q2 2020	5,591	$1,112	$182.16	$136.65 - $217.57
Q1 2020	5,651	$881	$176.33	$117.17 - $198.13
Q4 2019	5,728	$1,105	$177.67	$169.74 - $186.58
Q3 2019	5,804	$1,149	$187.16	$179.22 - $195.89
Q2 2019	6,266	$1,237	$173.21	$164.99 - $187.12
Q1 2019	6,366	$1,124	$150.92	$131.24 - $169.66
Q4 2018	6,582	$969	$141.48	$126.10 - $150.86
Q3 2018	6,640	$1,041	$137.00	$128.06 - $148.09
Q2 2018	6,732	$945	$132.91	$122.30 - $138.58
Q1 2018	7,530	$1,032	$123.54	$115.47 - $129.02
Q4 2017	7,630	$1,024	$121.85	$117.53 - $126.30
Q3 2017	7,630	$981	$120.10	$116.11 - $122.59
Q2 2017	14,907	$1,979	$117.68	$113.27 - $123.01
Q1 2017	14,493	$1,816	$111.04	$106.47 - $114.69
Q4 2016	12,025	$1,409	$105.98	$100.13 - $110.74
Q3 2016	11,550	$1,405	$108.98	$105.46 - $112.42
Q2 2016	12,350	$1,465	$104.92	$98.81 - $109.58
Q1 2016	12,270	$1,369	$95.34	$88.43 - $102.02
Q4 2015	11,945	$1,367	$105.21	$98.01 - $109.49
Q3 2015	11,900	$1,305	$99.79	$91.88 - $104.89
Q2 2015	10,780	$1,208	$102.25	$97.79 - $105.41
Q1 2015	10,780	$1,208	$97.19	$86.65 - $103.73
Q4 2014	10,880	$1,137	$96.70	$89.74 - $101.94
Q3 2014	10,955	$1,258	$99.26	$94.57 - $104.65
Q2 2014	11,030	$1,229	$94.25	$89.51 - $98.33
Q1 2014	11,030	$1,191	$91.92	$85.62 - $98.30
Q4 2013	10,880	$1,134	$90.95	$84.34 - $94.74
Q3 2013	11,650	$1,151	$81.20	$74.57 - $86.97
Q2 2013	19,670	$1,676	$73.48	$68.51 - $77.84