Ecolab Inc.
MX ˙ BMV ˙ US2788651006
SecurityMX:ECL / Ecolab Inc.
InstitutionFuller & Thaler Asset Management, Inc.
Latest Disclosed Ownership110,247 shares
Latest Disclosed Value $ 29,327,907
Fuller & Thaler Asset Management, Inc. reports 31.70% increase in ownership of ECL / Ecolab Inc.

On May 14, 2026 - Fuller & Thaler Asset Management, Inc. filed a 13F-HR form disclosing ownership of 110,247 shares of Ecolab Inc. (MX:ECL) valued at $29,327,907 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 18, 2026 disclosing 83,713 shares of Ecolab Inc.. This represents a change in shares of 31.70% 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)
2026-05-14 2026-03-31 13F ECOLAB COM 278865100 110,247 26,534 31.70 29,328 33.45 0.0987
2026-02-18 2025-12-31 13F/A-1 Ecolab Com 278865100 83,713 30,879 58.45 21,976 51.88 0.0742
2026-02-12 2025-12-31 13F Ecolab Com 278865100 83,713 30,879 21,976
2025-11-13 2025-09-30 13F ECOLAB COM 278865100 52,834 2,073 4.08 14,469 5.79 0.0492
2025-08-14 2025-06-30 13F Ecolab Com 278865100 50,761 7,245 16.65 13,677 23.98 0.0499
2025-05-13 2025-03-31 13F Ecolab Com 278865100 43,516 -799 -1.80 11,032 6.25 0.0428
2025-02-14 2024-12-31 13F Ecolab Com 278865100 44,315 2,668 6.41 10,384 -2.35 0.0393
2024-11-13 2024-09-30 13F Ecolab Com 278865100 41,647 -12,278 -22.77 10,634 -17.15 0.0417
2024-08-09 2024-06-30 13F Ecolab Com 278865100 53,925 310 0.58 12,834 3.68 0.0550
2024-05-13 2024-03-31 13F Ecolab Com 278865100 53,615 1,503 2.88 12,380 19.77 0.0540
2024-02-13 2023-12-31 13F Ecolab Com 278865100 52,112 4,520 9.50 10,336 28.21 0.0524
2023-11-13 2023-09-30 13F Ecolab Com 278865100 47,592 -489 -1.02 8,062 -10.18 0.0464
2023-08-14 2023-06-30 13F Ecolab Com 278865100 48,081 5,749 13.58 8,976 28.10 0.0510
2023-05-15 2023-03-31 13F Ecolab Com 278865100 42,332 3,170 8.09 7,007 140,040.00 0.0404
2023-02-13 2022-12-31 13F Ecolab Com 278865100 39,162 -6,391 -14.03 6 -99.92 0.0362
2022-11-14 2022-09-30 13F Ecolab Com 278865100 45,553 2,841 6.65 6,579 0.18 0.0474
2022-08-12 2022-06-30 13F Ecolab Com 278865100 42,712 979 2.35 6,567 -10.87 0.0452
2022-05-13 2022-03-31 13F Ecolab Com 278865100 41,733 13,154 46.03 7,368 9.90 0.0437
2022-02-09 2021-12-31 13F Ecolab Com 278865100 28,579 -1,576 -5.23 6,704 6.56 0.0390
2021-11-10 2021-09-30 13F Ecolab Com 278865100 30,155 654 2.22 6,291 3.54 0.0406
2021-08-13 2021-06-30 13F Ecolab Com 278865100 29,501 1,302 4.62 6,076 0.65 0.0394
2021-05-13 2021-03-31 13F Ecolab Com 278865100 28,199 4,635 19.67 6,037 18.42 0.0424
2021-02-11 2020-12-31 13F Ecolab Com 278865100 23,564 219 0.94 5,098 9.28 0.0472
2020-11-09 2020-09-30 13F Ecolab Com 278865100 23,345 228 0.99 4,665 1.44 0.0591
2020-08-13 2020-06-30 13F Ecolab Com 278865100 23,117 977 4.41 4,599 33.30 0.0603
2020-05-06 2020-03-31 13F Ecolab Com 278865100 22,140 -2,669 -10.76 3,450 -27.94 0.0582
2020-02-14 2019-12-31 13F Ecolab Com 278865100 24,809 4,314 21.05 4,788 17.96 0.0534
2019-11-13 2019-09-30 13F Ecolab Com 278865100 20,495 979 5.02 4,059 5.35 0.0481
2019-08-13 2019-06-30 13F Ecolab Com 278865100 19,516 1,085 5.89 3,853 18.41 0.0449
2019-05-14 2019-03-31 13F Ecolab Com 278865100 18,431 -4,070 -18.09 3,254 -1.87 0.0412
2019-02-14 2018-12-31 13F Ecolab Com 278865100 22,501 -5,102 -18.48 3,316 -23.38 0.0477
2018-11-13 2018-09-30 13F Ecolab Com 278865100 27,603 -3,105 -10.11 4,328 0.44 0.0447
2018-08-07 2018-06-30 13F Ecolab Com 278865100 30,708 1,143 3.87 4,309 6.34 0.0466
2018-05-14 2018-03-31 13F Ecolab Com 278865100 29,565 29,565 4,052 0.0475
2017-08-11 2017-06-30 13F Ecolab Com 278865100 0 -2,000 -100.00 0 -100.00
2017-05-15 2017-03-31 13F Ecolab Com 278865100 2,000 0 0.00 251 7.26 0.0034
2017-02-14 2016-12-31 13F/A-1 Ecolab Com 278865100 2,000 2,000 0.00 234 0.0035
2017-02-07 2016-12-31 13F Ecolab Com 278865100 2,000 234
2015-02-12 2014-12-31 13F Ecolab Com 278865100 0 -1,400 -100.00 0 -100.00
2014-11-14 2014-09-30 13F Ecolab Com 278865100 1,400 1,400 100.00 161 168.33 0.0069
2013-11-12 2013-09-30 13F Ecolab Com 278865100 0 -700 -100.00 0 -100.00
2013-08-13 2013-06-30 13F/A-1 Ecolab Com 278865100 700 700 60 0.0042
2013-08-13 2013-06-30 13F Ecolab Com 278865100 700 59,633 0.0054
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.