Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionMassmutual Trust Co Fsb/adv
Latest Disclosed Ownership94,946 shares
Latest Disclosed Value $ 25,257,535
Massmutual Trust Co Fsb/adv reports 0.63% decrease in ownership of ECL / Ecolab Inc.

On April 13, 2026 - Massmutual Trust Co Fsb/adv filed a 13F-HR form disclosing ownership of 94,946 shares of Ecolab Inc. (MX:ECL) valued at $25,257,535 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 7, 2026 disclosing 95,550 shares of Ecolab Inc.. This represents a change in shares of -0.63% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-13 2026-03-31 13F Ecolab Common / Ordinary Stock 278865100 94,946 -604 -0.63 25,258 0.69 0.6878
2026-01-07 2025-12-31 13F Ecolab Common / Ordinary Stock 278865100 95,550 -1,809 -1.86 25,084 -5.92 0.6455
2025-10-22 2025-09-30 13F Ecolab Common / Ordinary Stock 278865100 97,359 -44 -0.05 26,663 1.59 0.6791
2025-07-09 2025-06-30 13F Ecolab Common / Ordinary Stock 278865100 97,403 1,365 1.42 26,244 7.79 0.6993
2025-04-01 2025-03-31 13F Ecolab Common / Ordinary Stock 278865100 96,038 3,399 3.67 24,348 12.16 0.7043
2025-01-16 2024-12-31 13F Ecolab Common / Ordinary Stock 278865100 92,639 3,080 3.44 21,707 -5.07 0.6090
2024-10-02 2024-09-30 13F Ecolab Common / Ordinary Stock 278865100 89,559 3,117 3.61 22,867 11.15 0.6513
2024-07-02 2024-06-30 13F Ecolab Common / Ordinary Stock 278865100 86,442 619 0.72 20,573 3.82 0.6242
2024-04-09 2024-03-31 13F Ecolab Common / Ordinary Stock 278865100 85,823 3,772 4.60 19,817 21.76 0.6166
2024-01-03 2023-12-31 13F Ecolab Common / Ordinary Stock 278865100 82,051 1,155 1.43 16,275 18.76 0.5460
2023-10-04 2023-09-30 13F Ecolab Common / Ordinary Stock 278865100 80,896 2,239 2.85 13,704 -6.68 0.5060
2023-08-02 2023-06-30 13F Ecolab Common / Ordinary Stock 278865100 78,657 2,126 2.78 14,684 15.91 0.5281
2023-04-11 2023-03-31 13F Ecolab Common / Ordinary Stock 278865100 76,531 10,492 15.89 12,668 140,655.56 0.4842
2023-01-06 2022-12-31 13F Ecolab Common / Ordinary Stock 278865100 66,039 -2,003 -2.94 10 0.00 0.3954
2022-10-07 2022-09-30 13F Ecolab Common / Ordinary Stock 278865100 68,042 3,313 5.12 10 0.00 0.4459
2022-07-07 2022-06-30 13F Ecolab Common / Ordinary Stock 278865100 64,729 5,595 9.46 10 -10.00 0.4310
2022-04-08 2022-03-31 13F Ecolab Common / Ordinary Stock 278865100 59,134 4,575 8.39 10 -16.67 0.3947
2022-02-09 2021-12-31 13F Ecolab Common / Ordinary Stock 278865100 54,559 3,957 7.82 13 20.00 0.4753
2021-11-12 2021-09-30 13F Ecolab Common / Ordinary Stock 278865100 50,602 5,768 12.87 11 11.11 0.4365
2021-08-16 2021-06-30 13F Ecolab Common / Ordinary Stock 278865100 44,834 4,339 10.71 9 12.50 0.3922
2021-05-17 2021-03-31 13F Ecolab Common / Ordinary Stock 278865100 40,495 4,965 13.97 9 14.29 0.4077
2021-02-16 2020-12-31 13F Ecolab Common / Ordinary Stock 278865100 35,530 2,021 6.03 8 16.67 0.3936
2020-11-13 2020-09-30 13F Ecolab Common / Ordinary Stock 278865100 33,509 11,111 49.61 7 -99.87 0.3914
2020-08-13 2020-06-30 13F Ecolab Common / Ordinary Stock 278865100 22,398 1,342 6.37 4,456 35.81 0.2872
2020-05-15 2020-03-31 13F Ecolab Common / Ordinary Stock 278865100 21,056 -594 -2.74 3,281 -21.47 0.2619
2020-05-15 2019-12-31 13F Ecolab Common / Ordinary Stock 278865100 21,650 -717 -3.21 4,178 -5.69 0.2581
2019-11-14 2019-09-30 13F Ecolab Common / Ordinary Stock 278865100 22,367 -553 -2.41 4,430 -2.10 0.2967
2019-08-14 2019-06-30 13F Ecolab Common / Ordinary Stock 278865100 22,920 -705 -2.98 4,525 8.51 0.3129
2019-05-15 2019-03-31 13F Ecolab Common / Ordinary Stock 278865100 23,625 -29 -0.12 4,171 19.66 0.3007
2019-02-26 2018-12-31 13F Ecolab Common / Ordinary Stock 278865100 23,654 414 1.78 3,485 -4.34 0.2983
2018-11-09 2018-09-30 13F Ecolab Common / Ordinary Stock 278865100 23,240 376 1.64 3,644 13.56 0.2704
2018-08-20 2018-06-30 13F Ecolab Common / Ordinary Stock 278865100 22,864 504 2.25 3,209 4.70 0.2561
2018-05-21 2018-03-31 13F Ecolab Common / Ordinary Stock 278865100 22,360 804 3.73 3,065 5.95 0.2536
2018-03-01 2017-12-31 13F/A-1 Ecolab Common / Ordinary Stock 278865100 21,556 153 0.71 2,892 5.09 0.2396
2018-02-21 2017-12-31 13F Heroes Inc Com Stk Common / Ordinary Stock 278865100 8 -21,395 0
2018-02-13 2017-09-30 13F Ecolab common 278865100 21,403 1,386 6.92 2,753 3.58 0.2281
2017-08-14 2017-06-30 13F Ecolab common 278865100 20,017 429 2.19 2,657 8.23 0.2366
2017-05-02 2017-03-31 13F Ecolab common 278865100 19,588 -5,786 -22.80 2,455 -17.45 0.2306
2017-02-13 2016-12-31 13F Ecolab common 278865100 25,374 197 0.78 2,974 -0.37 0.3638
2016-08-10 2016-06-30 13F ECOLAB common 278865100 25,177 2,959 13.32 2,986 20.51 0.3773
2016-05-10 2016-03-31 13F ECOLAB common 278865100 22,218 -6,535 -22.73 2,478 -24.67 0.3342
2016-02-12 2015-12-31 13F ECOLAB common 278865100 28,753 22,096 331.92 3,289 330.37 0.4703
2015-11-04 2015-09-30 13F ECOLAB common 278865100 6,657 333 5.27 764 8.52 0.1613
2015-07-29 2015-06-30 13F ECOLAB common 278865100 6,324 -1,808 -22.23 704 -24.30 0.1573
2015-05-11 2015-03-31 13F ECOLAB common 278865100 8,132 8,080 15,538.46 930 18,500.00 0.1533
2015-02-05 2014-12-31 13F ECOLAB common 278865100 52 -6,605 -99.22 5 -99.35 0.0018
2014-11-04 2014-09-30 13F ECOLAB COMMON STOCK 278865100 6,657 6,605 12,701.92 764 15,180.00 0.1519
2014-07-09 2014-06-30 13F ECOLAB COMMON STOCK 278865100 52 0 0.00 6 0.00 0.0023
2014-05-15 2014-03-31 13F ECOLAB common 278865100 52 23 79.31 6 66.67 0.0033
2014-02-14 2013-12-31 13F/A-1 ECOLAB COMMON STOCK 278865100 29 29 3 0.0028
2014-02-13 2013-12-31 13F ECOLAB COMMON STOCK 278865100 29 3 0.0028
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.