Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionUs Bancorp \de\
Latest Disclosed Ownership569 shares
Latest Disclosed Value $ 163,150
Us Bancorp \de\ reports 48.95% increase in ownership of CLH1 / Clean Harbors, Inc.

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 569 shares of Clean Harbors, Inc. (MX:CLH1) valued at $163,150 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 382 shares of Clean Harbors, Inc.. This represents a change in shares of 48.95% 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 CLEAN HARBORS COM 184496107 569 187 48.95 163 83.15 0.0001
2026-01-30 2025-12-31 13F CLEAN HARBORS COM 184496107 382 8 2.14 90 3.49 0.0001
2025-11-12 2025-09-30 13F CLEAN HARBORS COM 184496107 374 54 16.88 87 17.81 0.0001
2025-07-24 2025-06-30 13F CLEAN HARBORS COM 184496107 320 -76 -19.19 74 -6.41 0.0001
2025-05-08 2025-03-31 13F CLEAN HARBORS COM 184496107 396 42 11.86 78 -3.70 0.0001
2025-02-05 2024-12-31 13F CLEAN HARBORS COM 184496107 354 -26 -6.84 81 -10.99 0.0001
2024-10-28 2024-09-30 13F CLEAN HARBORS COM 184496107 380 -373 -49.54 92 -46.47 0.0001
2024-08-07 2024-06-30 13F CLEAN HARBORS COM 184496107 753 -1,231 -62.05 170 -57.39 0.0002
2024-05-08 2024-03-31 13F CLEAN HARBORS COM 184496107 1,984 -1,446 -42.16 399 -33.28 0.0006
2024-02-09 2023-12-31 13F CLEAN HARBORS COM 184496107 3,430 -4,078 -54.32 599 -52.39 0.0009
2023-11-03 2023-09-30 13F CLEAN HARBORS COM 184496107 7,508 -3,984 -34.67 1,257 -33.51 0.0021
2023-08-10 2023-06-30 13F CLEAN HARBORS COM 184496107 11,492 -618 -5.10 1,890 9.44 0.0030
2023-05-09 2023-03-31 13F CLEAN HBRS COMMON STOCK 184496107 12,110 4,788 65.39 1,726 106.71 0.0029
2023-02-13 2022-12-31 13F CLEAN HBRS COMMON STOCK 184496107 7,322 6,881 1,560.32 836 1,604.08 0.0015
2022-10-27 2022-09-30 13F CLEAN HBRS COMMON STOCK 184496107 441 36 8.89 49 36.11 0.0001
2022-08-01 2022-06-30 13F CLEAN HBRS COMMON STOCK 184496107 405 0 0.00 36 -20.00 0.0001
2022-05-11 2022-03-31 13F CLEAN HBRS COMMON STOCK 184496107 405 31 8.29 45 21.62 0.0001
2022-02-11 2021-12-31 13F CLEAN HBRS COMMON STOCK 184496107 374 -7 -1.84 37 -7.50 0.0001
2021-11-10 2021-09-30 13F CLEAN HBRS COMMON STOCK 184496107 381 7 1.87 40 14.29 0.0001
2021-08-05 2021-06-30 13F CLEAN HBRS COMMON STOCK 184496107 374 -2,096 -84.86 35 -83.17 0.0001
2021-04-28 2021-03-31 13F CLEAN HBRS COMMON STOCK 184496107 2,470 -217 -8.08 208 1.96 0.0004
2021-02-04 2020-12-31 13F CLEAN HBRS COMMON STOCK 184496107 2,687 531 24.63 204 68.60 0.0004
2020-11-10 2020-09-30 13F CLEAN HBRS COMMON STOCK 184496107 2,156 0 0.00 121 -6.20 0.0003
2020-08-07 2020-06-30 13F CLEAN HBRS COMMON STOCK 184496107 2,156 78 3.75 129 20.56 0.0003
2020-05-13 2020-03-31 13F CLEAN HBRS COMMON STOCK 184496107 2,078 485 30.45 107 -21.90 0.0003
2020-02-04 2019-12-31 13F CLEAN HBRS COMMON STOCK 184496107 1,593 0 0.00 137 11.38 0.0004
2019-11-08 2019-09-30 13F CLEAN HBRS COMMON STOCK 184496107 1,593 -144 -8.29 123 -0.81 0.0003
2019-08-13 2019-06-30 13F CLEAN HBRS COMMON STOCK 184496107 1,737 0 0.00 124 0.00 0.0003
2019-05-08 2019-03-31 13F CLEAN HBRS COMMON STOCK 184496107 1,737 0 0.00 124 44.19 0.0004
2019-02-13 2018-12-31 13F CLEAN HBRS COMMON STOCK 184496107 1,737 -204 -10.51 86 -38.13 0.0003
2018-10-31 2018-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 1,941 0 0.00 139 28.70 0.0004
2018-08-08 2018-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 1,941 -300 -13.39 108 -0.92 0.0003
2018-05-08 2018-03-31 13F CLEAN HARBORS COMMON STOCK 184496107 2,241 -489 -17.91 109 -26.35 0.0003
2018-02-02 2017-12-31 13F CLEAN HARBORS COMMON STOCK 184496107 2,730 76 2.86 148 -1.33 0.0005
2017-11-13 2017-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 2,654 253 10.54 150 11.94 0.0005
2017-07-19 2017-06-30 13F CLEAN HBRS COMMON STOCK 184496107 2,401 0 0.00 134 0.00 0.0004
2017-05-03 2017-03-31 13F CLEAN HBRS COMMON STOCK 184496107 2,401 -300 -11.11 134 -10.67 0.0005
2017-02-08 2016-12-31 13F CLEAN HBRS COMMON STOCK 184496107 2,701 -7,693 -74.01 150 -69.94 0.0005
2016-11-04 2016-09-30 13F CLEAN HBRS COMMON STOCK 184496107 10,394 3,350 47.56 499 35.97 0.0018
2016-08-10 2016-06-30 13F CLEAN HBRS COMMON STOCK 184496107 7,044 -3,460 -32.94 367 -29.15 0.0014
2016-05-13 2016-03-31 13F CLEAN HBRS COMMON STOCK 184496107 10,504 4,402 72.14 518 103.94 0.0020
2016-02-10 2015-12-31 13F CLEAN HBRS COMMON STOCK 184496107 6,102 -11,933 -66.17 254 -67.97 0.0010
2015-11-16 2015-09-30 13F CLEAN HBRS COMMON STOCK 184496107 18,035 -768 -4.08 793 -21.49 0.0033
2015-08-10 2015-06-30 13F CLEAN HBRS COMMON STOCK 184496107 18,803 -3,550 -15.88 1,010 -20.41 0.0039
2015-05-08 2015-03-31 13F CLEAN HBRS COMMON STOCK 184496107 22,353 470 2.15 1,269 20.63 0.0049
2015-02-13 2014-12-31 13F CLEAN HBRS COMMON STOCK 184496107 21,883 6,672 43.86 1,052 28.14 0.0041
2014-11-14 2014-09-30 13F CLEAN HBRS COMMON STOCK 184496107 15,211 3,097 25.57 821 5.53 0.0033
2014-08-14 2014-06-30 13F CLEAN HBRS COMMON STOCK 184496107 12,114 -10 -0.08 778 17.17 0.0031
2014-05-14 2014-03-31 13F CLEAN HBRS COMMON STOCK 184496107 12,124 9,159 308.90 664 275.14 0.0027
2014-02-13 2013-12-31 13F CLEAN HBRS COMMON STOCK 184496107 2,965 162 5.78 177 7.93 0.0007
2013-11-07 2013-09-30 13F CLEAN HBRS COMMON STOCK 184496107 2,803 553 24.58 164 43.86 0.0007
2013-08-09 2013-06-30 13F CLEAN HBRS COMMON STOCK 184496107 2,250 2,250 114 0.0005
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.