Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionHemenway Trust Co LLC
Latest Disclosed Ownership7,610 shares
Latest Disclosed Value $ 2,024,412
Hemenway Trust Co LLC reports 4.92% decrease in ownership of ECL / Ecolab Inc.

On May 7, 2026 - Hemenway Trust Co LLC filed a 13F-HR form disclosing ownership of 7,610 shares of Ecolab Inc. (MX:ECL) valued at $2,024,412 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 8,004 shares of Ecolab Inc.. This represents a change in shares of -4.92% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ECOLAB COM 278865100 7,610 -394 -4.92 2,024 -3.66 0.1629
2026-02-03 2025-12-31 13F ECOLAB COM 278865100 8,004 -107 -1.32 2,101 -5.40 0.1608
2025-11-07 2025-09-30 13F ECOLAB COM 278865100 8,111 -105 -1.28 2,221 0.36 0.1700
2025-07-23 2025-06-30 13F ECOLAB COM 278865100 8,216 -500 -5.74 2,214 0.18 0.1713
2025-04-18 2025-03-31 13F ECOLAB COM 278865100 8,716 -145 -1.64 2,210 6.41 0.1799
2025-02-13 2024-12-31 13F ECOLAB COM 278865100 8,861 -4 -0.05 2,076 -8.26 0.1684
2024-11-05 2024-09-30 13F ECOLAB COM 278865100 8,865 5 0.06 2,264 7.35 0.1790
2024-08-05 2024-06-30 13F ECOLAB COM 278865100 8,860 90 1.03 2,109 4.15 0.1805
2024-05-06 2024-03-31 13F ECOLAB COM 278865100 8,770 -230 -2.56 2,025 13.39 0.1754
2024-02-13 2023-12-31 13F ECOLAB COM 278865100 9,000 -41 -0.45 1,785 16.59 0.1707
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 9,041 410 4.75 1,532 -4.97 0.1606
2023-08-11 2023-06-30 13F ECOLAB COM 278865100 8,631 -220 -2.49 1,611 9.97 0.1581
2023-05-10 2023-03-31 13F ECOLAB COM 278865100 8,851 -671 -7.05 1,465 5.70 0.1553
2023-02-08 2022-12-31 13F ECOLAB COM 278865100 9,522 -2,570 -21.25 1,386 -20.62 0.1541
2022-11-08 2022-09-30 13F ECOLAB COM 278865100 12,092 -100 -0.82 1,746 -6.88 0.2051
2022-07-19 2022-06-30 13F ECOLAB COM 278865100 12,192 -1,979 -13.97 1,875 -25.06 0.2134
2022-05-16 2022-03-31 13F ECOLAB COM 278865100 14,171 425 3.09 2,502 -22.42 0.2404
2022-02-08 2021-12-31 13F ECOLAB COM 278865100 13,746 -10 -0.07 3,225 12.37 0.2937
2021-11-10 2021-09-30 13F ECOLAB COM 278865100 13,756 28 0.20 2,870 1.49 0.2899
2021-08-09 2021-06-30 13F ECOLAB COM 278865100 13,728 1,117 8.86 2,828 4.74 0.2851
2021-05-17 2021-03-31 13F ECOLAB COM 278865100 12,611 -259 -2.01 2,700 -3.05 0.2953
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 12,870 329 2.62 2,785 11.13 0.3187
2020-10-28 2020-09-30 13F ECOLAB COM 278865100 12,541 500 4.15 2,506 4.59 0.3258
2020-07-28 2020-06-30 13F ECOLAB COM 278865100 12,041 -6 -0.05 2,396 27.65 0.3331
2020-05-07 2020-03-31 13F ECOLAB COM 278865100 12,047 135 1.13 1,877 -18.36 0.3173
2020-01-15 2019-12-31 13F ECOLAB COM 278865100 11,912 -3 -0.03 2,299 -2.58 0.3306
2019-11-04 2019-09-30 13F ECOLAB COM 278865100 11,915 -1,128 -8.65 2,360 -8.35 0.3698
2019-07-24 2019-06-30 13F ECOLAB COM 278865100 13,043 -25 -0.19 2,575 11.62 0.3976
2019-04-29 2019-03-31 13F/A-1 ECOLAB COM 278865100 13,068 123 0.95 2,307 20.98 0.3719
2019-04-29 2019-03-31 13F ECOLAB COM 278865100 13,068 2,307
2019-01-24 2018-12-31 13F ECOLAB COM 278865100 12,945 -57 -0.44 1,907 -6.43 0.3894
2018-10-15 2018-09-30 13F ECOLAB COM 278865100 13,002 856 7.05 2,038 19.60 0.3433
2018-07-30 2018-06-30 13F ECOLAB COM 278865100 12,146 174 1.45 1,704 3.84 0.3145
2018-04-24 2018-03-31 13F ECOLAB COM 278865100 11,972 1,777 17.43 1,641 19.96 0.3122
2018-02-02 2017-12-31 13F ECOLAB COM 278865100 10,195 1,675 19.66 1,368 24.82 0.2606
2017-10-26 2017-09-30 13F ECOLAB COM 278865100 8,520 -150 -1.73 1,096 -4.78 0.2288
2017-07-21 2017-06-30 13F ECOLAB COM 278865100 8,670 89 1.04 1,151 6.97 0.2559
2017-05-15 2017-03-31 13F ECOLAB COM 278865100 8,581 100 1.18 1,076 8.25 0.2478
2017-02-10 2016-12-31 13F ECOLAB Common Stock 278865100 8,481 -362 -4.09 994 -7.62 0.2507
2016-11-14 2016-09-30 13F ECOLAB Common Stock 278865100 8,843 0 0.00 1,076 2.57 0.2693
2016-08-08 2016-06-30 13F ECOLAB Common Stock 278865100 8,843 0 0.00 1,049 6.39 0.2735
2016-05-27 2016-03-31 13F ECOLAB Common Stock 278865100 8,843 400 4.74 986 2.07 0.2662
2016-02-08 2015-12-31 13F ECOLAB Common Stock 278865100 8,443 -1,150 -11.99 966 -8.26 0.2549
2015-11-13 2015-09-30 13F ECOLAB Common Stock 278865100 9,593 1,040 12.16 1,053 8.89 0.2908
2015-07-31 2015-06-30 13F ECOLAB Common Stock 278865100 8,553 180 2.15 967 0.94 0.2482
2015-05-22 2015-03-31 13F ECOLAB Common Stock 278865100 8,373 7,248 644.27 958 711.86 0.2508
2015-02-13 2014-12-31 13F ECOLAB Common Stock 278865100 1,125 25 2.27 118 -6.35 0.0353
2014-11-24 2014-09-30 13F ECOLAB Common Stock 278865100 1,100 120 12.24 126 15.60 0.0394
2014-07-23 2014-06-30 13F ECOLAB Common Stock 278865100 980 40 4.26 109 6.86 0.0331
2014-05-23 2014-03-31 13F ECOLAB Common Stock 278865100 940 0 0.00 102 4.08 0.0321
2014-02-27 2013-12-31 13F ECOLAB Common Stock 278865100 940 940 98 0.0314
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.