Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership9,828 shares
Latest Disclosed Value $ 2,614,445
Northwestern Mutual Wealth Management Co reports 4.70% increase in ownership of ECL / Ecolab Inc.

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 9,828 shares of Ecolab Inc. (MX:ECL) valued at $2,614,445 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 9,387 shares of Ecolab Inc.. This represents a change in shares of 4.70% 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 9,828 441 4.70 2,614 6.09 0.0016
2026-02-10 2025-12-31 13F/A-1 ECOLAB COM 278865100 9,387 -930 -9.01 2,464 -12.78 0.0016
2026-02-05 2025-12-31 13F ECOLAB COM 278865100 280,723 270,406 6,598 0.0042
2025-11-14 2025-09-30 13F ECOLAB COM 278865100 10,317 -235 -2.23 2,825 -0.63 0.0019
2025-08-13 2025-06-30 13F ECOLAB COM 278865100 10,552 1,605 17.94 2,843 25.35 0.0021
2025-05-14 2025-03-31 13F ECOLAB COM 278865100 8,947 -520 -5.49 2,268 2.25 0.0019
2025-02-11 2024-12-31 13F ECOLAB COM 278865100 9,467 684 7.79 2,218 -1.07 0.0019
2024-11-12 2024-09-30 13F ECOLAB COM 278865100 8,783 711 8.81 2,243 16.77 0.0020
2024-08-16 2024-06-30 13F ECOLAB COM 278865100 8,072 -33 -0.41 1,921 2.67 0.0019
2024-05-15 2024-03-31 13F ECOLAB COM 278865100 8,105 -486 -5.66 1,871 9.81 0.0019
2024-02-13 2023-12-31 13F ECOLAB COM 278865100 8,591 -47 -0.54 1,704 16.40 0.0019
2023-11-14 2023-09-30 13F ECOLAB COM 278865100 8,638 1,226 16.54 1,463 5.78 0.0019
2023-08-14 2023-06-30 13F ECOLAB COM 278865100 7,412 -222 -2.91 1,384 9.50 0.0018
2023-05-15 2023-03-31 13F ECOLAB COM 278865100 7,634 -201 -2.57 1,264 10.79 0.0018
2023-02-21 2022-12-31 13F ECOLAB COM 278865100 7,835 78 1.01 1,140 1.79 0.0017
2022-11-14 2022-09-30 13F ECOLAB COM 278865100 7,757 -385 -4.73 1,120 -10.54 0.0020
2022-08-04 2022-06-30 13F ECOLAB COM 278865100 8,142 -771 -8.65 1,252 -20.51 0.0022
2022-05-09 2022-03-31 13F ECOLAB COM 278865100 8,913 -570 -6.01 1,575 -29.21 0.0025
2022-02-03 2021-12-31 13F ECOLAB COM 278865100 9,483 1,651 21.08 2,225 36.25 0.0036
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 7,832 -368 -4.49 1,633 -3.26 0.0030
2021-08-13 2021-06-30 13F ECOLAB COM 278865100 8,200 1,252 18.02 1,688 13.52 0.0032
2021-05-14 2021-03-31 13F ECOLAB COM 278865100 6,948 45 0.65 1,487 -0.54 0.0032
2021-02-12 2020-12-31 13F ECOLAB COM 278865100 6,903 -85 -1.22 1,495 7.09 0.0035
2020-11-13 2020-09-30 13F ECOLAB COM 278865100 6,988 -3,844 -35.49 1,396 -35.22 0.0038
2020-08-14 2020-06-30 13F ECOLAB COM 278865100 10,832 -255 -2.30 2,155 24.71 0.0066
2020-05-08 2020-03-31 13F ECOLAB COM 278865100 11,087 733 7.08 1,728 -13.47 0.0067
2020-02-13 2019-12-31 13F ECOLAB COM 278865100 10,354 1,063 11.44 1,997 8.53 0.0068
2019-11-12 2019-09-30 13F ECOLAB COM 278865100 9,291 630 7.27 1,840 7.60 0.0070
2019-08-12 2019-06-30 13F ECOLAB COM 278865100 8,661 -1,677 -16.22 1,710 -6.30 0.0069
2019-05-10 2019-03-31 13F ECOLAB COM 278865100 10,338 162 1.59 1,825 21.75 0.0080
2019-02-12 2018-12-31 13F ECOLAB COM 278865100 10,176 -427 -4.03 1,499 -9.86 0.0075
2018-11-01 2018-09-30 13F ECOLAB COM 278865100 10,603 2,562 31.86 1,663 47.43 0.0084
2018-08-10 2018-06-30 13F ECOLAB COM 278865100 8,041 527 7.01 1,128 9.51 0.0063
2018-05-14 2018-03-31 13F ECOLAB COM 278865100 7,514 781 11.60 1,030 14.06 0.0062
2018-01-31 2017-12-31 13F ECOLAB COM 278865100 6,733 -1,748 -20.61 903 -17.23 0.0058
2017-11-07 2017-09-30 13F ECOLAB COM 278865100 8,481 3,214 61.02 1,091 56.08 0.0078
2017-08-10 2017-06-30 13F ECOLAB COM 278865100 5,267 -1,198 -18.53 699 -13.81 0.0056
2017-05-09 2017-03-31 13F ECOLAB COM 278865100 6,465 -2,640 -29.00 811 -24.06 0.0074
2017-02-15 2016-12-31 13F ECOLAB COM 278865100 9,105 1,764 24.03 1,068 19.60 0.0116
2016-11-14 2016-09-30 13F ECOLAB COM 278865100 7,341 4,129 128.55 893 135.00 0.0137
2016-08-29 2016-06-30 13F ECOLAB COM 278865100 3,212 -400 -11.07 380 -5.71 0.0054
2016-05-16 2016-03-31 13F ECOLAB COM 278865100 3,612 1,088 43.11 403 39.45 0.0065
2016-02-16 2015-12-31 13F ECOLAB COM 278865100 2,524 331 15.09 289 19.92 0.0058
2015-11-16 2015-09-30 13F ECOLAB COM 278865100 2,193 346 18.73 241 15.31 0.0057
2015-09-30 2015-06-30 13F/A-1 ECOLAB COM 278865100 1,847 -32 -1.70 209 -2.79 0.0054
2015-08-14 2015-06-30 13F ECOLAB COM 278865100 1,879 215
2015-05-15 2015-03-31 13F ECOLAB COM 278865100 1,879 -1,746 -48.17 215 -43.27 0.0060
2015-02-13 2014-12-31 13F ECOLAB COM 278865100 3,625 1,287 55.05 379 41.42 0.0117
2014-11-14 2014-09-30 13F ECOLAB COM 278865100 2,338 85 3.77 268 6.77 0.0094
2014-08-05 2014-06-30 13F ECOLAB COM 278865100 2,253 -355 -13.61 251 -10.68 0.0098
2014-05-15 2014-03-31 13F ECOLAB COM 278865100 2,608 -253 -8.84 281 -5.70 0.0118
2014-02-14 2013-12-31 13F ECOLAB COM 278865100 2,861 327 12.90 298 19.20 0.0135
2013-11-14 2013-09-30 13F ECOLAB COM 278865100 2,534 -446 -14.97 250 -1.57 0.0131
2013-08-21 2013-06-30 13F/A-1 ECOLAB COM 278865100 2,980 2,980 254 0.0152
2013-08-14 2013-06-30 13F ECOLAB COM 278865100 56,230 4,790 0.0527
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.