Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionNorthstar Group, Inc.
Latest Disclosed Ownership23,131 shares
Latest Disclosed Value $ 6,153,361
Northstar Group, Inc. reports 5.44% decrease in ownership of ECL / Ecolab Inc.

On April 28, 2026 - Northstar Group, Inc. filed a 13F-HR form disclosing ownership of 23,131 shares of Ecolab Inc. (US:ECL) valued at $6,153,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 24,462 shares of Ecolab Inc.. This represents a change in shares of -5.44% during the quarter. The current value of the position is $5,913,903 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)
2026-04-28 2026-03-31 13F ECOLAB COM 278865100 23,131 -1,331 -5.44 6,153 -4.19 0.8698
2026-02-13 2025-12-31 13F ECOLAB COM 278865100 24,462 -274 -1.11 6,422 -5.20 0.8747
2025-10-22 2025-09-30 13F ECOLAB COM 278865100 24,736 -34 -0.14 6,774 1.51 0.9867
2025-07-18 2025-06-30 13F ECOLAB COM 278865100 24,770 -160 -0.64 6,674 5.59 1.0307
2025-04-17 2025-03-31 13F ECOLAB COM 278865100 24,930 -96 -0.38 6,320 7.78 1.0247
2025-01-28 2024-12-31 13F ECOLAB COM 278865100 25,026 28 0.11 5,864 -8.12 0.9821
2024-10-09 2024-09-30 13F ECOLAB COM 278865100 24,998 8 0.03 6,383 7.31 1.1118
2024-07-18 2024-06-30 13F ECOLAB COM 278865100 24,990 -39 -0.16 5,948 2.91 1.1243
2024-04-18 2024-03-31 13F ECOLAB COM 278865100 25,029 10 0.04 5,779 16.47 1.1351
2024-01-10 2023-12-31 13F ECOLAB COM 278865100 25,019 13 0.05 4,963 17.14 1.0780
2023-10-19 2023-09-30 13F ECOLAB COM 278865100 25,006 27 0.11 4,236 -9.16 1.0043
2023-08-03 2023-06-30 13F ECOLAB COM 278865100 24,979 -542 -2.12 4,664 10.39 1.0935
2023-04-27 2023-03-31 13F ECOLAB COM 278865100 25,521 -1,711 -6.28 4,225 6.59 1.0834
2023-01-26 2022-12-31 13F ECOLAB COM 278865100 27,232 -1,240 -4.36 3,964 -3.62 1.1239
2022-10-26 2022-09-30 13F ECOLAB COM 278865100 28,472 -327 -1.14 4,112 -7.14 1.2322
2022-07-27 2022-06-30 13F ECOLAB COM 278865100 28,799 -383 -1.31 4,428 -14.07 1.2804
2022-05-05 2022-03-31 13F ECOLAB COM 278865100 29,182 25 0.09 5,153 -24.66 1.2382
2022-01-31 2021-12-31 13F ECOLAB COM 278865100 29,157 426 1.48 6,840 14.11 1.6318
2021-11-02 2021-09-30 13F ECOLAB COM 278865100 28,731 798 2.86 5,994 4.19 1.5581
2021-07-28 2021-06-30 13F ECOLAB COM 278865100 27,933 961 3.56 5,753 -0.36 1.5060
2021-05-10 2021-03-31 13F ECOLAB COM 278865100 26,972 1,688 6.68 5,774 5.56 1.6288
2021-02-09 2020-12-31 13F ECOLAB COM 278865100 25,284 245 0.98 5,470 9.31 1.6786
2020-11-12 2020-09-30 13F ECOLAB COM 278865100 25,039 1,484 6.30 5,004 6.79 1.7244
2020-08-11 2020-06-30 13F ECOLAB COM 278865100 23,555 -88 -0.37 4,686 27.03 1.8894
2020-05-04 2020-03-31 13F ECOLAB COM 278865100 23,643 2,065 9.57 3,689 -11.43 1.6843
2020-01-21 2019-12-31 13F ECOLAB COM 278865100 21,578 2,654 14.02 4,165 11.16 1.5908
2019-11-01 2019-09-30 13F ECOLAB COM 278865100 18,924 1,293 7.33 3,747 7.64 1.5564
2019-07-12 2019-06-30 13F ECOLAB COM 278865100 17,631 1,316 8.07 3,481 20.66 1.4722
2019-04-16 2019-03-31 13F ECOLAB COM 278865100 16,315 738 4.74 2,885 25.71 1.2884
2019-01-22 2018-12-31 13F ECOLAB COM 278865100 15,577 188 1.22 2,295 -4.85 1.1672
2018-10-26 2018-09-30 13F ECOLAB COM 278865100 15,389 833 5.72 2,412 18.12 1.1023
2018-07-27 2018-06-30 13F ECOLAB COM 278865100 14,556 1,591 12.27 2,042 14.91 1.0396
2018-04-13 2018-03-31 13F ECOLAB COM 278865100 12,965 2,110 19.44 1,777 21.46 0.9235
2018-01-31 2017-12-31 13F/A-1 ECOLAB COM 278865100 10,855 925 9.32 1,463 12.28 0.7710
2018-01-23 2017-12-31 13F ECOLAB COM 278865100 10,855 925 1,463
2017-10-16 2017-09-30 13F ECOLAB COM 278865100 9,930 2,390 31.70 1,303 30.17 0.7517
2017-07-12 2017-06-30 13F ECOLAB COM 278865100 7,540 4,215 126.77 1,001 139.47 0.6178
2017-04-06 2017-03-31 13F ECOLAB COM 278865100 3,325 3,325 418 0.2769
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.