Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionLazard Asset Management Llc
Latest Disclosed Ownership245,837 shares
Latest Disclosed Value $ 65,397,559
Lazard Asset Management Llc reports 0.69% decrease in ownership of ECL / Ecolab Inc.

On May 15, 2026 - Lazard Asset Management Llc filed a 13F-HR form disclosing ownership of 245,837 shares of Ecolab Inc. (US:ECL) valued at $65,397,559 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 247,548 shares of Ecolab Inc.. This represents a change in shares of -0.69% during the quarter. The current value of the position is $63,418,571 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)
2026-05-15 2026-03-31 13F ECOLAB COM 278865100 245,837 -1,711 -0.69 65,398 0.63 0.0561
2026-02-17 2025-12-31 13F ECOLAB COM 278865100 247,548 -2,410 -0.96 64,986 -5.06 0.1101
2025-11-14 2025-09-30 13F ECOLAB COM 278865100 249,958 30,201 13.74 68,453 115,922.03 0.0922
2025-08-14 2025-06-30 13F ECOLAB Common Stock 278865100 219,757 177,505 420.11 59 490.00 0.0815
2025-05-15 2025-03-31 13F ECOLAB Common Stock 278865100 42,252 -3,053 -6.74 11 0.00 0.0164
2025-02-14 2024-12-31 13F ECOLAB Common Stock 278865100 45,305 -4,755 -9.50 11 -16.67 0.0155
2024-11-14 2024-09-30 13F ECOLAB Common Stock 278865100 50,060 -715 -1.41 13 0.00 0.0171
2024-08-14 2024-06-30 13F ECOLAB Common Stock 278865100 50,775 -3,195 -5.92 12 0.00 0.0152
2024-07-09 2024-03-31 13F/A-1 ECOLAB Common Stock 278865100 53,970 -4,095 -7.05 12 9.09 0.0151
2024-05-14 2024-03-31 13F ECOLAB Common Stock 278865100 53,970 -4,095 12 0.0151
2024-02-14 2023-12-31 13F ECOLAB Common Stock 278865100 58,065 -80,573 -58.12 12 -52.17 0.0146
2023-11-14 2023-09-30 13F ECOLAB Common Stock 278865100 138,638 7,145 5.43 23 -4.17 0.0319
2023-08-15 2023-06-30 13F ECOLAB Common Stock 278865100 131,493 -19,342 -12.82 25 0.00 0.0302
2023-05-15 2023-03-31 13F ECOLAB Common Stock 278865100 150,835 -33,063 -17.98 25 -99.91 0.0327
2023-02-15 2022-12-31 13F ECOLAB Common Stock 278865100 183,898 -29,057 -13.64 26,766 -12.96 0.0369
2022-11-14 2022-09-30 13F ECOLAB Common Stock 278865100 212,955 -909 -0.43 30,753 -6.47 0.0449
2022-08-09 2022-06-30 13F ECOLAB Common Stock 278865100 213,864 3,147 1.49 32,882 -11.61 0.0445
2022-05-13 2022-03-31 13F ECOLAB Common Stock 278865100 210,717 -8,478 -3.87 37,203 -27.65 0.0431
2022-02-09 2021-12-31 13F ECOLAB Common Stock 278865100 219,195 20,895 10.54 51,420 24.30 0.0547
2021-11-15 2021-09-30 13F ECOLAB Common Stock 278865100 198,300 3,196 1.64 41,368 2.94 0.0467
2021-08-12 2021-06-30 13F ECOLAB Common Stock 278865100 195,104 -16,293 -7.71 40,185 -11.20 0.0451
2021-05-14 2021-03-31 13F ECOLAB Common Stock 278865100 211,397 -42,777 -16.83 45,253 -17.71 0.0548
2021-02-11 2020-12-31 13F ECOLAB Common Stock 278865100 254,174 92,643 57.35 54,992 70.36 0.0695
2020-11-13 2020-09-30 13F ECOLAB Common Stock 278865100 161,531 18,004 12.54 32,279 13.05 0.0454
2020-08-13 2020-06-30 13F ECOLAB Common Stock 278865100 143,527 24,761 20.85 28,554 54.30 0.0439
2020-05-14 2020-03-31 13F ECOLAB Common Stock 278865100 118,766 7,279 6.53 18,506 -13.99 0.0339
2020-02-13 2019-12-31 13F ECOLAB Common Stock 278865100 111,487 -24,975 -18.30 21,515 -20.38 0.0307
2019-11-14 2019-09-30 13F ECOLAB Common Stock 278865100 136,462 17,802 15.00 27,023 15.35 0.0444
2019-08-14 2019-06-30 13F ECOLAB Common Stock 278865100 118,660 -27,322 -18.72 23,427 -9.10 0.0380
2019-08-28 2019-03-31 13F/A-1 ECOLAB Common Stock 278865100 145,982 -1,974 -1.33 25,771 18.21 0.0422
2019-05-13 2019-03-31 13F ECOLAB Common Stock 278865100 145,982 -1,974 25,771
2019-08-28 2018-12-31 13F/A-1 ECOLAB Common Stock 278865100 147,956 147,956 21,801 0.0401
2019-02-13 2018-12-31 13F ECOLAB Common Stock 278865100 147,956 147,956 21,801
2019-08-30 2018-09-30 13F/A-1 ECOLAB Common Stock 278865100 0 -73,505 -100.00 0 -100.00
2019-08-30 2018-06-30 13F/A-1 ECOLAB Common Stock 278865100 73,505 73,505 10,314 0.0179
2018-08-13 2018-06-30 13F ECOLAB Common Stock 278865100 73,747 73,747 10,347
2019-08-13 2017-03-31 13F/A-1 ECOLAB Common Stock 278865100 0 -85 -100.00 0 -100.00
2019-07-30 2016-12-31 13F/A-1 ECOLAB Common Stock 278865100 85 0 0.00 9 -10.00 0.0000
2017-02-13 2016-12-31 13F ECOLAB Common Stock 278865100 85 85 9
2019-08-07 2016-09-30 13F/A-1 ECOLAB Common Stock 278865100 85 0 0.00 10 0.00 0.0000
2019-07-29 2016-06-30 13F/A-1 ECOLAB Common Stock 278865100 85 85 -96.59 10 -96.49 0.0000
2015-11-13 2015-09-30 13F ECOLAB Common Stock 278865100 0 0 0 0.0000
2015-06-09 2015-03-31 13F/A-1 ECOLAB Common Stock 278865100 0 -2,494 -100.00 0 -100.00
2019-08-29 2014-12-31 13F/A-3 ECOLAB Common Stock 278865100 2,494 0 0.00 260 -8.77 0.0006
2015-05-20 2014-12-31 13F/A-1 ECOLAB Common Stock 278865100 2,437 -57 254 0.0005
2015-06-09 2014-12-31 13F/A-2 ECOLAB Common Stock 278865100 2,494 57 259 0.0006
2015-02-12 2014-12-31 13F ECOLAB Common Stock 278865100 2,494 259
2014-11-07 2014-09-30 13F ECOLAB Common Stock 278865100 2,494 0 0.00 285 2.89 0.0006
2014-08-12 2014-06-30 13F ECOLAB Common Stock 278865100 2,494 0 0.00 277 2.97 0.0006
2014-05-12 2014-03-31 13F ECOLAB Common Stock 278865100 2,494 0 0.00 269 3.86 0.0006
2014-02-14 2013-12-31 13F ECOLAB Common Stock 278865100 2,494 0 0.00 259 5.71 0.0006
2014-01-13 2013-09-30 13F/A-1 ECOLAB Common Stock 278865100 2,494 900 56.46 245 82.84 0.0006
2013-11-13 2013-09-30 13F ECOLAB Common Stock 278865100 2,494 245
2013-08-13 2013-06-30 13F ECOLAB Common Stock 278865100 1,594 1,594 134 0.0003
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.