Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership30,220 shares
Latest Disclosed Value $ 8,039,359
Vestmark Advisory Solutions, Inc. reports 8.86% increase in ownership of ECL / Ecolab Inc.

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 30,220 shares of Ecolab Inc. (US:ECL) valued at $8,039,124 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 27,760 shares of Ecolab Inc.. This represents a change in shares of 8.86% during the quarter. The current value of the position is $7,726,347 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.

Upgrade to unlock premium data and export to Excel .

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 30,220 2,460 8.86 8,039 10.32 0.0553
2026-02-06 2025-12-31 13F ECOLAB COM 278865100 27,760 15,601 128.31 7,288 118.89 0.0984
2025-11-10 2025-09-30 13F ECOLAB COM 278865100 12,159 -3,106 -20.35 3,330 -19.06 0.0635
2025-08-06 2025-06-30 13F ECOLAB COM 278865100 15,265 -11,157 -42.23 4,113 -38.59 0.0594
2025-05-13 2025-03-31 13F ECOLAB COM 278865100 26,422 12,580 90.88 6,699 106.54 0.1725
2025-02-06 2024-12-31 13F ECOLAB COM 278865100 13,842 -1,305 -8.62 3,243 -16.14 0.1117
2024-11-14 2024-09-30 13F ECOLAB COM 278865100 15,147 121 0.81 3,867 8.14 0.1440
2024-08-12 2024-06-30 13F ECOLAB COM 278865100 15,026 12,988 637.29 3,576 660.85 0.1493
2024-05-15 2024-03-31 13F ECOLAB COM 278865100 2,038 806 65.42 471 92.62 0.0203
2024-02-06 2023-12-31 13F ECOLAB COM 278865100 1,232 -39 -3.07 244 13.49 0.0124
2023-11-06 2023-09-30 13F ECOLAB COM 278865100 1,271 -10,986 -89.63 215 -90.60 0.0157
2023-08-07 2023-06-30 13F ECOLAB COM 278865100 12,257 314 2.63 2,288 15.73 0.0871
2023-05-09 2023-03-31 13F ECOLAB COM 278865100 11,943 2,076 21.04 1,977 37.67 0.0856
2023-01-20 2022-12-31 13F ECOLAB COM 278865100 9,867 -40 -0.40 1,436 0.35 0.0700
2022-11-03 2022-09-30 13F ECOLAB COM 278865100 9,907 -1,306 -11.65 1,431 -17.00 0.0798
2022-08-04 2022-06-30 13F ECOLAB COM 278865100 11,213 206 1.87 1,724 -11.27 0.0985
2022-04-27 2022-03-31 13F ECOLAB COM 278865100 11,007 497 4.73 1,943 -21.21 0.1100
2022-01-31 2021-12-31 13F ECOLAB COM 278865100 10,510 -4,039 -27.76 2,466 -18.75 0.1391
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 14,549 1,139 8.49 3,035 9.88 0.2056
2021-08-09 2021-06-30 13F ECOLAB COM 278865100 13,410 471 3.64 2,762 -0.29 0.1965
2021-05-10 2021-03-31 13F ECOLAB COM 278865100 12,939 738 6.05 2,770 4.92 0.2457
2021-02-04 2020-12-31 13F ECOLAB COM 278865100 12,201 483 4.12 2,640 12.72 0.2962
2020-10-19 2020-09-30 13F ECOLAB COM 278865100 11,718 1,334 12.85 2,342 13.36 0.3146
2020-08-13 2020-06-30 13F ECOLAB COM 278865100 10,384 1,010 10.77 2,066 41.41 0.3197
2020-05-06 2020-03-31 13F ECOLAB COM 278865100 9,374 9,374 1,461 0.2856
2020-02-14 2019-12-31 13F ECOLAB COM 278865100 0 -9,261 -100.00 0 -100.00
2019-11-05 2019-09-30 13F ECOLAB COM 278865100 9,261 66 0.72 1,834 0.99 0.2974
2019-08-20 2019-06-30 13F ECOLAB COM 278865100 9,195 330 3.72 1,816 16.04 0.3107
2019-05-14 2019-03-31 13F ECOLAB COM 278865100 8,865 8,865 1,565 0.2790
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.