ECOLAB INC

Ticker: ECL CUSIP: 278865100 Class: COM

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 192,746 Value ($000) $51 Avg Close $265.71 Range $251.04 - $281.41

Q3 2025

Shares 192,863 Value ($000) $53 Avg Close $270.32 Range $253.71 - $284.56

Q2 2025

Shares 198,351 Value ($000) $53 Avg Close $252.35 Range $219.93 - $269.19

Q1 2025

Shares 192,111 Value ($000) $49 Avg Close $249.61 Range $225.31 - $270.90

Q4 2024

Shares 190,183 Value ($000) $45 Avg Close $245.53 Range $230.70 - $259.26

Q3 2024

Shares 201,950 Value ($000) $52 Avg Close $241.07 Range $217.65 - $253.31

Q2 2024

Shares 208,552 Value ($000) $50 Avg Close $227.14 Range $213.29 - $242.24

Q1 2024

Shares 220,868 Value ($000) $51 Avg Close $207.94 Range $189.63 - $227.85

Q4 2023

Shares 221,036 Value ($000) $44 Avg Close $175.85 Range $153.18 - $197.06

Q3 2023

Shares 230,924 Value ($000) $39 Avg Close $177.30 Range $163.22 - $186.52

Q2 2023

Shares 236,775 Value ($000) $44 Avg Close $167.31 Range $156.95 - $182.94

Q1 2023

Shares 241,348 Value ($000) $40 Avg Close $150.99 Range $139.35 - $161.29

Q4 2022

Shares 244,880 Value ($000) $36 Avg Close $141.81 Range $126.42 - $153.48

Q3 2022

Shares 247,621 Value ($000) $35,761 Avg Close $156.07 Range $138.29 - $171.23

Q2 2022

Shares 248,771 Value ($000) $38,251 Avg Close $158.99 Range $137.82 - $177.76

Q1 2022

Shares 248,924 Value ($000) $43,950 Avg Close $179.54 Range $147.91 - $226.74

Q4 2021

Shares 249,571 Value ($000) $58,547 Avg Close $215.53 Range $199.33 - $227.72

Q3 2021

Shares 254,230 Value ($000) $53,037 Avg Close $208.54 Range $195.25 - $219.93

Q2 2021

Shares 272,477 Value ($000) $56,122 Avg Close $206.33 Range $194.28 - $218.25

Q1 2021

Shares 289,552 Value ($000) $61,984 Avg Close $201.55 Range $190.45 - $215.84

Q4 2020

Shares 295,252 Value ($000) $63,881 Avg Close $197.47 Range $171.24 - $214.73

Q3 2020

Shares 309,349 Value ($000) $61,820 Avg Close $188.44 Range $172.53 - $201.15

Q2 2020

Shares 323,587 Value ($000) $64,378 Avg Close $182.16 Range $136.65 - $217.57

Q1 2020

Shares 321,303 Value ($000) $50,069 Avg Close $176.33 Range $117.17 - $198.13

Q4 2019

Shares 338,303 Value ($000) $65,289 Avg Close $177.67 Range $169.74 - $186.58

Q3 2019

Shares 344,026 Value ($000) $68,131 Avg Close $187.16 Range $179.22 - $195.89

Q2 2019

Shares 342,231 Value ($000) $67,570 Avg Close $173.21 Range $164.99 - $187.12

Q1 2019

Shares 348,319 Value ($000) $61,492 Avg Close $150.92 Range $131.24 - $169.66

Q4 2018

Shares 348,975 Value ($000) $51,421 Avg Close $141.48 Range $126.10 - $150.86

Q3 2018

Shares 359,777 Value ($000) $56,406 Avg Close $137.00 Range $128.06 - $148.09

Q2 2018

Shares 378,804 Value ($000) $53,158 Avg Close $132.91 Range $122.30 - $138.58

Q1 2018

Shares 384,100 Value ($000) $52,649 Avg Close $123.54 Range $115.47 - $129.02

Q4 2017

Shares 390,403 Value ($000) $52,384 Avg Close $121.85 Range $117.53 - $126.30

Q3 2017

Shares 393,429 Value ($000) $50,599 Avg Close $120.10 Range $116.11 - $122.59

Q2 2017

Shares 399,167 Value ($000) $52,989 Avg Close $117.68 Range $113.27 - $123.01

Q1 2017

Shares 413,960 Value ($000) $51,886 Avg Close $111.04 Range $106.47 - $114.69

Q4 2016

Shares 441,068 Value ($000) $51,702 Avg Close $105.98 Range $100.13 - $110.74

Q3 2016

Shares 450,357 Value ($000) $54,817 Avg Close $108.98 Range $105.46 - $112.42

Q2 2016

Shares 490,113 Value ($000) $58,127 Avg Close $104.92 Range $98.81 - $109.58

Q1 2016

Shares 490,441 Value ($000) $54,694 Avg Close $95.34 Range $88.43 - $102.02

Q4 2015

Shares 490,382 Value ($000) $56,090 Avg Close $105.21 Range $98.01 - $109.49

Q3 2015

Shares 490,864 Value ($000) $53,858 Avg Close $99.79 Range $91.88 - $104.89

Q2 2015

Shares 490,090 Value ($000) $55,414 Avg Close $102.25 Range $97.79 - $105.41

Q1 2015

Shares 509,316 Value ($000) $58,256 Avg Close $97.19 Range $86.65 - $103.73

Q4 2014

Shares 514,689 Value ($000) $53,795 Avg Close $96.70 Range $89.74 - $101.94

Q3 2014

Shares 523,848 Value ($000) $60,153 Avg Close $99.26 Range $94.57 - $104.65

Q2 2014

Shares 528,196 Value ($000) $58,809 Avg Close $94.25 Range $89.51 - $98.33

Q1 2014

Shares 547,109 Value ($000) $59,082 Avg Close $91.92 Range $85.62 - $98.30

Q4 2013

Shares 558,100 Value ($000) $58,193 Avg Close $90.95 Range $84.34 - $94.74

Q3 2013

Shares 568,907 Value ($000) $56,185 Avg Close $81.20 Range $74.57 - $86.97

Q2 2013

Shares 576,776 Value ($000) $49,136 Avg Close $73.48 Range $68.51 - $77.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	192,746	$51	$265.71	$251.04 - $281.41
Q3 2025	192,863	$53	$270.32	$253.71 - $284.56
Q2 2025	198,351	$53	$252.35	$219.93 - $269.19
Q1 2025	192,111	$49	$249.61	$225.31 - $270.90
Q4 2024	190,183	$45	$245.53	$230.70 - $259.26
Q3 2024	201,950	$52	$241.07	$217.65 - $253.31
Q2 2024	208,552	$50	$227.14	$213.29 - $242.24
Q1 2024	220,868	$51	$207.94	$189.63 - $227.85
Q4 2023	221,036	$44	$175.85	$153.18 - $197.06
Q3 2023	230,924	$39	$177.30	$163.22 - $186.52
Q2 2023	236,775	$44	$167.31	$156.95 - $182.94
Q1 2023	241,348	$40	$150.99	$139.35 - $161.29
Q4 2022	244,880	$36	$141.81	$126.42 - $153.48
Q3 2022	247,621	$35,761	$156.07	$138.29 - $171.23
Q2 2022	248,771	$38,251	$158.99	$137.82 - $177.76
Q1 2022	248,924	$43,950	$179.54	$147.91 - $226.74
Q4 2021	249,571	$58,547	$215.53	$199.33 - $227.72
Q3 2021	254,230	$53,037	$208.54	$195.25 - $219.93
Q2 2021	272,477	$56,122	$206.33	$194.28 - $218.25
Q1 2021	289,552	$61,984	$201.55	$190.45 - $215.84
Q4 2020	295,252	$63,881	$197.47	$171.24 - $214.73
Q3 2020	309,349	$61,820	$188.44	$172.53 - $201.15
Q2 2020	323,587	$64,378	$182.16	$136.65 - $217.57
Q1 2020	321,303	$50,069	$176.33	$117.17 - $198.13
Q4 2019	338,303	$65,289	$177.67	$169.74 - $186.58
Q3 2019	344,026	$68,131	$187.16	$179.22 - $195.89
Q2 2019	342,231	$67,570	$173.21	$164.99 - $187.12
Q1 2019	348,319	$61,492	$150.92	$131.24 - $169.66
Q4 2018	348,975	$51,421	$141.48	$126.10 - $150.86
Q3 2018	359,777	$56,406	$137.00	$128.06 - $148.09
Q2 2018	378,804	$53,158	$132.91	$122.30 - $138.58
Q1 2018	384,100	$52,649	$123.54	$115.47 - $129.02
Q4 2017	390,403	$52,384	$121.85	$117.53 - $126.30
Q3 2017	393,429	$50,599	$120.10	$116.11 - $122.59
Q2 2017	399,167	$52,989	$117.68	$113.27 - $123.01
Q1 2017	413,960	$51,886	$111.04	$106.47 - $114.69
Q4 2016	441,068	$51,702	$105.98	$100.13 - $110.74
Q3 2016	450,357	$54,817	$108.98	$105.46 - $112.42
Q2 2016	490,113	$58,127	$104.92	$98.81 - $109.58
Q1 2016	490,441	$54,694	$95.34	$88.43 - $102.02
Q4 2015	490,382	$56,090	$105.21	$98.01 - $109.49
Q3 2015	490,864	$53,858	$99.79	$91.88 - $104.89
Q2 2015	490,090	$55,414	$102.25	$97.79 - $105.41
Q1 2015	509,316	$58,256	$97.19	$86.65 - $103.73
Q4 2014	514,689	$53,795	$96.70	$89.74 - $101.94
Q3 2014	523,848	$60,153	$99.26	$94.57 - $104.65
Q2 2014	528,196	$58,809	$94.25	$89.51 - $98.33
Q1 2014	547,109	$59,082	$91.92	$85.62 - $98.30
Q4 2013	558,100	$58,193	$90.95	$84.34 - $94.74
Q3 2013	568,907	$56,185	$81.20	$74.57 - $86.97
Q2 2013	576,776	$49,136	$73.48	$68.51 - $77.84