ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q4 2025

Shares 78,960 Value ($000) $20,784 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 75,968 Value ($000) $20,854 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 79,972 Value ($000) $21,600 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 90,840 Value ($000) $23,088 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 82,660 Value ($000) $19,423 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 82,021 Value ($000) $20,989 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 80,291 Value ($000) $19,155 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 83,351 Value ($000) $19,294 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 84,556 Value ($000) $16,772 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 85,235 Value ($000) $14,439 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 86,335 Value ($000) $16,118 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 87,655 Value ($000) $15 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 88,033 Value ($000) $13 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 92,772 Value ($000) $13,417 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 88,663 Value ($000) $13,633 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 86,928 Value ($000) $15,348 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 88,328 Value ($000) $16,734 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 96,206 Value ($000) $20,070 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 97,136 Value ($000) $20,007 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 104,389 Value ($000) $22,347 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 110,439 Value ($000) $23,895 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 109,859 Value ($000) $21,954 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 110,559 Value ($000) $21,996 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 111,553 Value ($000) $17,383 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 108,053 Value ($000) $20,853 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 117,473 Value ($000) $23,264 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 119,785 Value ($000) $23,650 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 116,863 Value ($000) $20,631 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 118,069 Value ($000) $17,397 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 115,412 Value ($000) $18,093 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 115,562 Value ($000) $16,216 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 115,351 Value ($000) $15,665 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 115,451 Value ($000) $15,491 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 114,101 Value ($000) $14,674 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 115,521 Value ($000) $15,336 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 116,102 Value ($000) $14,551 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 115,717 Value ($000) $13,564 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 116,257 Value ($000) $14,151 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 116,377 Value ($000) $13,802 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 108,781 Value ($000) $12,131 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 108,781 Value ($000) $12,443 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 109,581 Value ($000) $12,018 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 108,481 Value ($000) $12,266 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 111,549 Value ($000) $12,759 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 113,049 Value ($000) $11,816 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 108,649 Value ($000) $12,476 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 109,049 Value ($000) $12,142 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 110,549 Value ($000) $11,938 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 110,549 Value ($000) $11,527 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 110,549 Value ($000) $10,918 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 113,549 Value ($000) $9,673 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	78,960	$20,784	$265.71	$251.04 - $281.41
Q3 2025	75,968	$20,854	$270.32	$253.71 - $284.56
Q2 2025	79,972	$21,600	$252.35	$219.93 - $269.19
Q1 2025	90,840	$23,088	$249.61	$225.31 - $270.90
Q4 2024	82,660	$19,423	$245.53	$230.70 - $259.26
Q3 2024	82,021	$20,989	$241.07	$217.65 - $253.31
Q2 2024	80,291	$19,155	$227.14	$213.29 - $242.24
Q1 2024	83,351	$19,294	$207.94	$189.63 - $227.85
Q4 2023	84,556	$16,772	$175.85	$153.18 - $197.06
Q3 2023	85,235	$14,439	$177.30	$163.22 - $186.52
Q2 2023	86,335	$16,118	$167.31	$156.95 - $182.94
Q1 2023	87,655	$15	$150.99	$139.35 - $161.29
Q4 2022	88,033	$13	$141.81	$126.42 - $153.48
Q3 2022	92,772	$13,417	$156.07	$138.29 - $171.23
Q2 2022	88,663	$13,633	$158.99	$137.82 - $177.76
Q1 2022	86,928	$15,348	$179.54	$147.91 - $226.74
Q4 2021	88,328	$16,734	$215.53	$199.33 - $227.72
Q3 2021	96,206	$20,070	$208.54	$195.25 - $219.93
Q2 2021	97,136	$20,007	$206.33	$194.28 - $218.25
Q1 2021	104,389	$22,347	$201.55	$190.45 - $215.84
Q4 2020	110,439	$23,895	$197.47	$171.24 - $214.73
Q3 2020	109,859	$21,954	$188.44	$172.53 - $201.15
Q2 2020	110,559	$21,996	$182.16	$136.65 - $217.57
Q1 2020	111,553	$17,383	$176.33	$117.17 - $198.13
Q4 2019	108,053	$20,853	$177.67	$169.74 - $186.58
Q3 2019	117,473	$23,264	$187.16	$179.22 - $195.89
Q2 2019	119,785	$23,650	$173.21	$164.99 - $187.12
Q1 2019	116,863	$20,631	$150.92	$131.24 - $169.66
Q4 2018	118,069	$17,397	$141.48	$126.10 - $150.86
Q3 2018	115,412	$18,093	$137.00	$128.06 - $148.09
Q2 2018	115,562	$16,216	$132.91	$122.30 - $138.58
Q1 2018	115,351	$15,665	$123.54	$115.47 - $129.02
Q4 2017	115,451	$15,491	$121.85	$117.53 - $126.30
Q3 2017	114,101	$14,674	$120.10	$116.11 - $122.59
Q2 2017	115,521	$15,336	$117.68	$113.27 - $123.01
Q1 2017	116,102	$14,551	$111.04	$106.47 - $114.69
Q4 2016	115,717	$13,564	$105.98	$100.13 - $110.74
Q3 2016	116,257	$14,151	$108.98	$105.46 - $112.42
Q2 2016	116,377	$13,802	$104.92	$98.81 - $109.58
Q1 2016	108,781	$12,131	$95.34	$88.43 - $102.02
Q4 2015	108,781	$12,443	$105.21	$98.01 - $109.49
Q3 2015	109,581	$12,018	$99.79	$91.88 - $104.89
Q2 2015	108,481	$12,266	$102.25	$97.79 - $105.41
Q1 2015	111,549	$12,759	$97.19	$86.65 - $103.73
Q4 2014	113,049	$11,816	$96.70	$89.74 - $101.94
Q3 2014	108,649	$12,476	$99.26	$94.57 - $104.65
Q2 2014	109,049	$12,142	$94.25	$89.51 - $98.33
Q1 2014	110,549	$11,938	$91.92	$85.62 - $98.30
Q4 2013	110,549	$11,527	$90.95	$84.34 - $94.74
Q3 2013	110,549	$10,918	$81.20	$74.57 - $86.97
Q2 2013	113,549	$9,673	$73.48	$68.51 - $77.84