Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionO'Brien Greene & Co. Inc
Latest Disclosed Ownership3,194 shares
Latest Disclosed Value $ 849,668
O'Brien Greene & Co. Inc ownership in ECL / Ecolab Inc.

On May 6, 2026 - O'Brien Greene & Co. Inc filed a 13F-HR form disclosing ownership of 3,194 shares of Ecolab Inc. (MX:ECL) valued at $849,668 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 3,194 shares of Ecolab Inc.. This represents a change in shares of 0.00% during the quarter.

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)
2026-05-06 2026-03-31 13F Ecolab Inc Com COM 278865100 3,194 0 0.00 850 1.31 0.1356
2026-02-05 2025-12-31 13F Ecolab Inc Com COM 278865100 3,194 0 0.00 838 -4.12 0.2489
2025-11-10 2025-09-30 13F Ecolab Inc Com COM 278865100 3,194 -86 -2.62 875 -1.02 0.2690
2025-08-06 2025-06-30 13F Ecolab Inc Com COM 278865100 3,280 0 0.00 884 6.26 0.2891
2025-05-12 2025-03-31 13F Ecolab Inc Com COM 278865100 3,280 -2 -0.06 832 8.06 0.2790
2025-02-03 2024-12-31 13F Ecolab Inc Com COM 278865100 3,282 32 0.98 769 -7.24 0.2497
2024-11-15 2024-09-30 13F Ecolab Inc Com COM 278865100 3,250 -35 -1.07 830 6.15 0.2584
2024-08-12 2024-06-30 13F Ecolab Inc Com COM 278865100 3,285 35 1.08 782 4.13 0.2476
2024-05-02 2024-03-31 13F Ecolab Inc Com COM 278865100 3,250 0 0.00 750 16.46 0.2467
2024-02-02 2023-12-31 13F Ecolab Inc Com COM 278865100 3,250 0 0.00 645 17.09 0.2267
2023-11-08 2023-09-30 13F ECOLAB INC COM COM 278865100 3,250 0 0.00 551 0.2014
2023-08-15 2023-06-30 13F/A-1 ECOLAB INC COM COM 278865100 3,250 0 0.00 1 0.2110
2023-07-20 2023-06-30 13F ECOLAB INC COM COM 278865100 9,750 6,500 2 0.2122
2023-05-03 2023-03-31 13F ECOLAB INC COM COM 278865100 3,250 0 0.00 1 0.2015
2023-02-02 2022-12-31 13F ECOLAB INC COM COM 278865100 3,250 -6,632 -67.11 0 -100.00 0.1794
2022-11-09 2022-09-30 13F ECOLAB INC COM COM 278865100 9,882 6,588 200.00 1,427 182.02 0.1891
2022-08-11 2022-06-30 13F ECOLAB INC COM COM 278865100 3,294 -875 -20.99 506 -31.25 0.1911
2022-05-18 2022-03-31 13F ECOLAB INC COM COM 278865100 4,169 -22,976 -84.64 736 -88.44 0.2430
2022-02-08 2021-12-31 13F ECOLAB INC COM COM 278865100 27,145 -460 -1.67 6,368 10.57 2.0918
2021-11-12 2021-09-30 13F ECOLAB INC COM COM 278865100 27,605 165 0.60 5,759 1.89 2.1007
2021-08-09 2021-06-30 13F ECOLAB INC COM COM 278865100 27,440 -440 -1.58 5,652 -5.29 2.0176
2021-05-12 2021-03-31 13F ECOLAB INC COM COM 278865100 27,880 -227 -0.81 5,968 -1.86 2.3647
2021-02-04 2020-12-31 13F ECOLAB INC COM COM 278865100 28,107 -425 -1.49 6,081 6.67 2.5016
2020-11-09 2020-09-30 13F ECOLAB INC COM COM 278865100 28,532 130 0.46 5,701 0.90 2.7101
2020-08-10 2020-06-30 13F ECOLAB INC COM COM 278865100 28,402 -225 -0.79 5,650 26.65 2.9904
2020-05-07 2020-03-31 13F ECOLAB INC COM COM 278865100 28,627 -72 -0.25 4,461 -19.46 2.9693
2020-02-05 2019-12-31 13F ECOLAB INC COM COM 278865100 28,699 660 2.35 5,539 -0.25 2.8129
2019-11-07 2019-09-30 13F ECOLAB INC COM COM 278865100 28,039 124 0.44 5,553 0.76 2.9800
2019-08-21 2019-06-30 13F ECOLAB INC COM COM 278865100 27,915 -1,300 -4.45 5,511 6.84 2.8887
2019-04-29 2019-03-31 13F ECOLAB INC COM COM 278865100 29,215 460 1.60 5,158 21.74 2.6030
2019-02-27 2018-12-31 13F ECOLAB INC COM COM 278865100 28,755 28,755 4,237 2.5245
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.