Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionRobeco Schweiz AG
Latest Disclosed Ownership186,208 shares
Latest Disclosed Value $ 49,535,052
Robeco Schweiz AG reports 19.41% decrease in ownership of ECL / Ecolab Inc.

On May 7, 2026 - Robeco Schweiz AG filed a 13F-HR form disclosing ownership of 186,208 shares of Ecolab Inc. (US:ECL) valued at $49,535,052 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 231,059 shares of Ecolab Inc.. This represents a change in shares of -19.41% during the quarter. The current value of the position is $47,607,799 USD.

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 186,208 -44,851 -19.41 49,535 -18.34 1.0476
2026-02-03 2025-12-31 13F ECOLAB COM 278865100 231,059 48,390 26.49 60,658 21.25 1.3591
2025-10-27 2025-09-30 13F ECOLAB COM 278865100 182,669 -4,011 -2.15 50,026 -0.54 1.1246
2025-08-07 2025-06-30 13F ECOLAB COM 278865100 186,680 -27,206 -12.72 50,299 -7.24 1.1608
2025-04-30 2025-03-31 13F ECOLAB COM 278865100 213,886 -54,142 -20.20 54,224 -13.66 1.3340
2025-02-05 2024-12-31 13F ECOLAB COM 278865100 268,028 -74,505 -21.75 62,804 -28.19 1.3419
2024-11-04 2024-09-30 13F ECOLAB COM 278865100 342,533 -29,734 -7.99 87,459 -1.29 1.6386
2024-08-08 2024-06-30 13F ECOLAB COM 278865100 372,267 -15,098 -3.90 88,600 -0.94 1.7015
2024-04-25 2024-03-31 13F ECOLAB COM 278865100 387,365 -29,254 -7.02 89,443 8.24 1.5609
2024-02-14 2023-12-31 13F ECOLAB COM 278865100 416,619 -70,977 -14.56 82,636 0.05 1.3882
2023-11-08 2023-09-30 13F ECOLAB COM 278865100 487,596 28,394 6.18 82,599 -3.65 1.3963
2023-08-14 2023-06-30 13F ECOLAB COM 278865100 459,202 -167,369 -26.71 85,728 -17.34 1.2770
2023-05-08 2023-03-31 13F ECOLAB COM 278865100 626,571 -329 -0.05 103,716 13.66 1.6759
2023-02-07 2022-12-31 13F ECOLAB COM 278865100 626,900 -69,883 -10.03 91,252 -9.32 1.6668
2022-11-10 2022-09-30 13F ECOLAB COM 278865100 696,783 -190,439 -21.46 100,629 -26.24 1.9568
2022-08-03 2022-06-30 13F ECOLAB COM 278865100 887,222 31,426 3.67 136,419 -9.72 2.4326
2022-05-13 2022-03-31 13F ECOLAB COM 278865100 855,796 260,877 43.85 151,099 8.27 2.1290
2022-02-08 2021-12-31 13F ECOLAB COM 278865100 594,919 -39,138 -6.17 139,562 5.51 1.8090
2021-10-13 2021-09-30 13F ECOLAB COM 278865100 634,057 70,783 12.57 132,277 14.01 1.5427
2021-07-15 2021-06-30 13F ECOLAB COM 278865100 563,274 202,499 56.13 116,018 50.22 1.6162
2021-05-04 2021-03-31 13F ECOLAB COM 278865100 360,775 102,311 39.58 77,231 38.11 1.1799
2021-02-16 2020-12-31 13F ECOLAB COM 278865100 258,464 -19,860 -7.14 55,921 0.54 1.1984
2020-10-13 2020-09-30 13F ECOLAB COM 278865100 278,324 12,000 4.51 55,620 4.97 1.6476
2020-07-07 2020-06-30 13F ECOLAB COM 278865100 266,324 -159,613 -37.47 52,985 -22.93 1.9026
2020-04-10 2020-03-31 13F ECOLAB COM 278865100 425,937 41,224 10.72 68,746 -6.75 2.9445
2020-02-19 2019-12-31 13F/A-1 ECOLAB COM 278865100 384,713 55,925 17.01 73,719 13.36 2.7484
2020-02-13 2019-12-31 13F ECOLAB COM 278865100 384,713 55,925 192 1,102,751.1343
2019-10-18 2019-09-30 13F ECOLAB COM 278865100 328,788 -41,022 -11.09 65,031 -8.51 2.7926
2019-07-31 2019-06-30 13F ECOLAB COM 278865100 369,810 -51,969 -12.32 71,077 -4.54 3.0136
2019-05-14 2019-03-31 13F ECOLAB COM 278865100 421,779 -19,697 -4.46 74,461 16.83 3.0798
2019-02-01 2018-12-31 13F ECOLAB COM 278865100 441,476 1,606 0.37 63,736 -7.61 2.9477
2018-10-30 2018-09-30 13F ECOLAB COM 278865100 439,870 161,655 58.10 68,985 77.01 2.6917
2018-08-09 2018-06-30 13F ECOLAB COM 278865100 278,215 98,632 54.92 38,972 58.33 1.6614
2018-05-16 2018-03-31 13F ECOLAB COM 278865100 179,583 33,912 23.28 24,615 25.61 1.1403
2018-02-14 2017-12-31 13F ECOLAB COM 278865100 145,671 88,715 155.76 19,597 166.16 1.2938
2017-11-09 2017-09-30 13F ECOLAB COM 278865100 56,956 56,956 255.97 7,363 437.05 0.5677
2016-05-18 2016-03-31 13F ECOLAB COM 278865100 0 -70,143 -100.00 0 -100.00
2016-02-16 2015-12-31 13F ECOLAB COM 278865100 70,143 -16,147 -18.71 8,097 -13.40 0.6936
2015-10-27 2015-09-30 13F ECOLAB COM 278865100 86,290 -1,691 -1.92 9,350 -5.90 0.8724
2015-08-24 2015-06-30 13F ECOLAB COM 278865100 87,981 71,981 449.88 9,936 624.73 0.8241
2013-08-01 2013-06-30 13F ECOLAB COM 278865100 16,000 16,000 1,371 0.1232
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.