Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionArgent Trust Co
Latest Disclosed Ownership10,446 shares
Latest Disclosed Value $ 2,778,824
Argent Trust Co reports 1.11% increase in ownership of ECL / Ecolab Inc.

On May 13, 2026 - Argent Trust Co filed a 13F-HR form disclosing ownership of 10,446 shares of Ecolab Inc. (US:ECL) valued at $2,778,845 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 10,331 shares of Ecolab Inc.. This represents a change in shares of 1.11% during the quarter. The current value of the position is $2,670,729 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)
2026-05-13 2026-03-31 13F ECOLAB COMMON STOCK 278865100 10,446 115 1.11 2,779 2.43 0.0367
2026-02-10 2025-12-31 13F ECOLAB COMMON STOCK 278865100 10,331 883 9.35 2,712 4.83 0.0930
2025-11-12 2025-09-30 13F ECOLAB COMMON STOCK 278865100 9,448 253 2.75 2,587 4.44 0.0917
2025-08-12 2025-06-30 13F ECOLAB COMMON STOCK 278865100 9,195 874 10.50 2,478 17.45 0.0935
2025-05-09 2025-03-31 13F ECOLAB COMMON STOCK 278865100 8,321 736 9.70 2,110 18.68 0.0866
2025-02-13 2024-12-31 13F ECOLAB COMMON STOCK 278865100 7,585 933 14.03 1,777 4.65 0.0725
2024-11-13 2024-09-30 13F ECOLAB COMMON STOCK 278865100 6,652 140 2.15 1,698 9.62 0.0703
2024-08-12 2024-06-30 13F ECOLAB COMMON STOCK 278865100 6,512 2,424 59.30 1,550 64.26 0.0682
2024-05-10 2024-03-31 13F ECOLAB COMMON STOCK 278865100 4,088 -46 -1.11 944 15.14 0.0425
2024-02-09 2023-12-31 13F ECOLAB COMMON STOCK 278865100 4,134 159 4.00 820 21.69 0.0408
2023-11-08 2023-09-30 13F ECOLAB COMMON STOCK 278865100 3,975 -112 -2.74 673 -11.80 0.0369
2023-08-11 2023-06-30 13F ECOLAB COMMON STOCK 278865100 4,087 4 0.10 763 13.04 0.0413
2023-05-12 2023-03-31 13F ECOLAB COMMON STOCK 278865100 4,083 5 0.12 676 13.83 0.0428
2023-02-10 2022-12-31 13F ECOLAB COMMON STOCK 278865100 4,078 1,509 58.74 594 59.84 0.0393
2022-11-10 2022-09-30 13F ECOLAB COMMON STOCK 278865100 2,569 765 42.41 371 33.45 0.0269
2022-08-11 2022-06-30 13F ECOLAB COMMON STOCK 278865100 1,804 -134 -6.91 278 -18.71 0.0191
2022-05-11 2022-03-31 13F ECOLAB COMMON STOCK 278865100 1,938 0 0.00 342 -24.67 0.0208
2022-02-09 2021-12-31 13F ECOLAB COMMON STOCK 278865100 1,938 -45 -2.27 454 9.66 0.0266
2021-11-09 2021-09-30 13F ECOLAB COMMON STOCK 278865100 1,983 -304 -13.29 414 -12.10 0.0266
2021-08-09 2021-06-30 13F ECOLAB COMMON STOCK 278865100 2,287 -26 -1.12 471 -4.85 0.0309
2021-05-12 2021-03-31 13F ECOLAB COMMON STOCK 278865100 2,313 66 2.94 495 1.85 0.0348
2021-02-11 2020-12-31 13F ECOLAB COMMON STOCK 278865100 2,247 -6 -0.27 486 7.76 0.0376
2020-11-13 2020-09-30 13F ECOLAB COMMON STOCK 278865100 2,253 0 0.00 451 0.89 0.0397
2020-08-04 2020-06-30 13F ECOLAB COMMON STOCK 278865100 2,253 -65 -2.80 447 23.82 0.0419
2020-05-11 2020-03-31 13F ECOLAB COMMON STOCK 278865100 2,318 30 1.31 361 -18.33 0.0406
2020-02-11 2019-12-31 13F ECOLAB COMMON STOCK 278865100 2,288 89 4.05 442 1.61 0.0393
2019-11-12 2019-09-30 13F ECOLAB COMMON STOCK 278865100 2,199 215 10.84 435 10.97 0.0419
2019-08-13 2019-06-30 13F ECOLAB COMMON STOCK 278865100 1,984 0 0.00 392 12.00 0.0398
2019-05-15 2019-03-31 13F ECOLAB COMMON STOCK 278865100 1,984 187 10.41 350 32.08 0.0366
2019-02-06 2018-12-31 13F ECOLAB COMMON STOCK 278865100 1,797 0 0.00 265 -5.02 0.0311
2018-11-14 2018-09-30 13F ECOLAB COM 278865100 1,797 -70 -3.75 279 7.31 0.0322
2019-04-15 2018-06-30 13F/A-1 ECOLAB COM 278865100 1,867 1,867 260 0.0317
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.