Ecolab Inc.
US ˙ NYSE ˙ US2788651006

SecurityECL / Ecolab Inc.
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership212,011 shares
Latest Disclosed Value $ 56,399,373
D.a. Davidson & Co. reports 0.97% increase in ownership of ECL / Ecolab Inc.

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 212,011 shares of Ecolab Inc. (US:ECL) valued at $56,399,166 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 209,979 shares of Ecolab Inc.. This represents a change in shares of 0.97% during the quarter. The current value of the position is $54,204,852 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)
2026-05-05 2026-03-31 13F ECOLAB COM 278865100 212,011 2,032 0.97 56,399 2.31 0.3419
2026-01-29 2025-12-31 13F ECOLAB COM 278865100 209,979 4,028 1.96 55,124 -2.27 0.3377
2025-10-22 2025-09-30 13F ECOLAB COM 278865100 205,951 4,670 2.32 56,402 4.00 0.3609
2025-07-30 2025-06-30 13F ECOLAB COM 278865100 201,281 112,030 125.52 54,233 139.69 0.3819
2025-04-28 2025-03-31 13F ECOLAB COM 278865100 89,251 9,396 11.77 22,627 20.92 0.1817
2025-01-31 2024-12-31 13F ECOLAB COM 278865100 79,855 11,026 16.02 18,712 6.47 0.1523
2024-11-13 2024-09-30 13F ECOLAB COM 278865100 68,829 970 1.43 17,574 8.82 0.1451
2024-08-01 2024-06-30 13F ECOLAB COM 278865100 67,859 1,508 2.27 16,150 5.42 0.1432
2024-05-13 2024-03-31 13F ECOLAB COM 278865100 66,351 6,266 10.43 15,321 28.56 0.1380
2024-02-09 2023-12-31 13F ECOLAB COM 278865100 60,085 4,440 7.98 11,918 26.43 0.1168
2023-11-08 2023-09-30 13F ECOLAB COM 278865100 55,645 5,370 10.68 9,426 0.44 0.1023
2023-08-11 2023-06-30 13F ECOLAB COM 278865100 50,275 7,737 18.19 9,386 33.29 0.0991
2023-04-25 2023-03-31 13F ECOLAB COM 278865100 42,538 38,098 858.06 7,041 989.94 0.0792
2023-02-03 2022-12-31 13F ECOLAB COM 278865100 4,440 -1,963 -30.66 646 -30.16 0.0076
2022-11-07 2022-09-30 13F ECOLAB COM 278865100 6,403 1,177 22.52 925 15.05 0.0121
2022-07-28 2022-06-30 13F ECOLAB COM 278865100 5,226 951 22.25 804 6.49 0.0101
2022-05-12 2022-03-31 13F ECOLAB COM 278865100 4,275 186 4.55 755 -21.27 0.0082
2022-01-31 2021-12-31 13F ECOLAB COM 278865100 4,089 781 23.61 959 38.99 0.0102
2021-11-15 2021-09-30 13F ECOLAB COM 278865100 3,308 426 14.78 690 16.16 0.0080
2021-08-10 2021-06-30 13F ECOLAB COM 278865100 2,882 186 6.90 594 2.95 0.0070
2021-05-07 2021-03-31 13F ECOLAB COM 278865100 2,696 75 2.86 577 1.76 0.0074
2021-02-10 2020-12-31 13F ECOLAB COM 278865100 2,621 487 22.82 567 32.79 0.0087
2020-11-02 2020-09-30 13F ECOLAB COM 278865100 2,134 -415 -16.28 427 -15.78 0.0074
2020-08-10 2020-06-30 13F ECOLAB COM 278865100 2,549 371 17.03 507 49.56 0.0095
2020-05-05 2020-03-31 13F ECOLAB COM 278865100 2,178 -10 -0.46 339 -19.67 0.0066
2020-02-14 2019-12-31 13F ECOLAB COM 278865100 2,188 6 0.27 422 -2.31 0.0068
2019-11-05 2019-09-30 13F ECOLAB COM 278865100 2,182 29 1.35 432 1.65 0.0077
2019-08-13 2019-06-30 13F ECOLAB COM 278865100 2,153 -17,754 -89.18 425 -87.91 0.0079
2019-05-13 2019-03-31 13F ECOLAB COM 278865100 19,907 -1,592 -7.40 3,514 10.92 0.0604
2019-01-29 2018-12-31 13F ECOLAB COM 278865100 21,499 -7,022 -24.62 3,168 -29.16 0.0618
2018-11-13 2018-09-30 13F ECOLAB COM 278865100 28,521 551 1.97 4,472 13.94 0.0796
2018-08-02 2018-06-30 13F ECOLAB COM 278865100 27,970 -3,823 -12.02 3,925 -9.94 0.0769
2018-05-04 2018-03-31 13F ECOLAB COM 278865100 31,793 1,074 3.50 4,358 5.73 0.0901
2018-02-08 2017-12-31 13F ECOLAB COM 278865100 30,719 635 2.11 4,122 6.54 0.0864
2017-11-08 2017-09-30 13F ECOLAB COM 278865100 30,084 1,936 6.88 3,869 3.56 0.0759
2017-08-11 2017-06-30 13F ECOLAB COM 278865100 28,148 201 0.72 3,736 6.68 0.0844
2017-05-12 2017-03-31 13F ECOLAB COM 278865100 27,947 -32,945 -54.10 3,502 -50.89 0.0849
2017-02-15 2016-12-31 13F ECOLAB COM 278865100 60,892 1,490 2.51 7,131 -1.29 0.1617
2016-11-18 2016-09-30 13F/A-1 ECOLAB COM 278865100 59,402 1,626 2.81 7,224 5.51 0.1798
2016-11-14 2016-09-30 13F ECOLAB COM 278865100 59,402 7,224
2016-08-13 2016-06-30 13F ECOLAB COM 278865100 57,776 -3,643 -5.93 6,847 0.01 0.2015
2016-05-13 2016-03-31 13F ECOLAB COM 278865100 61,419 4,870 8.61 6,846 5.89 0.2132
2016-02-12 2015-12-31 13F ECOLAB COM 278865100 56,549 288 0.51 6,465 4.78 0.2106
2015-11-13 2015-09-30 13F ECOLAB COM 278865100 56,261 1,326 2.41 6,170 -0.61 0.2159
2015-08-14 2015-06-30 13F ECOLAB COM 278865100 54,935 548 1.01 6,208 -0.14 0.2040
2015-05-06 2015-03-31 13F ECOLAB COM 278865100 54,387 531 0.99 6,217 10.52 0.2041
2015-02-12 2014-12-31 13F ECOLAB COM 278865100 53,856 3,097 6.10 5,625 -3.43 0.1839
2014-11-12 2014-09-30 13F ECOLAB COM 278865100 50,759 5,712 12.68 5,825 16.27 0.1974
2014-07-29 2014-06-30 13F ECOLAB COM 278865100 45,047 196 0.44 5,010 3.56 0.1697
2014-05-05 2014-03-31 13F ECOLAB COM 278865100 44,851 8 0.02 4,838 3.60 0.1730
2014-02-13 2013-12-31 13F/A-1 ECOLAB COM 278865100 44,843 8,469 23.28 4,670 30.16 0.1744
2014-02-12 2013-12-31 13F ECOLAB COM 278865100 44,843 4,670
2013-11-14 2013-09-30 13F ECOLAB COM 278865100 36,374 2,976 8.91 3,588 26.20 0.1614
2013-08-16 2013-06-30 13F ECOLAB COM 278865100 33,398 33,398 2,843 0.1373
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.