Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionComerica Bank
Latest Disclosed Ownership14,937 shares
Latest Disclosed Value $ 3,502,319
Comerica Bank reports 84.14% decrease in ownership of CLH1 / Clean Harbors, Inc.

On January 29, 2026 - Comerica Bank filed a 13F-HR form disclosing ownership of 14,937 shares of Clean Harbors, Inc. (MX:CLH1) valued at $3,502,319 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 94,192 shares of Clean Harbors, Inc.. This represents a change in shares of -84.14% 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)
2026-01-29 2025-12-31 13F CLEAN HARBORS COM 184496107 14,937 -79,255 -84.14 3,502 -83.99 0.0114
2025-11-14 2025-09-30 13F CLEAN HARBORS COM 184496107 94,192 19,815 26.64 21,873 27.21 0.0823
2025-08-14 2025-06-30 13F CLEAN HARBORS COM 184496107 74,377 57,148 331.70 17,194 406.45 0.0667
2025-05-14 2025-03-31 13F CLEAN HARBORS COM 184496107 17,229 -417 -2.36 3,396 -16.40 0.0143
2025-02-14 2024-12-31 13F/A-1 CLEAN HARBORS COM 184496107 17,646 -710 -3.87 4,061 -8.45 0.0164
2025-02-14 2024-12-31 13F CLEAN HARBORS COM 184496107 17,646 -710 4,061 0.0136
2024-11-14 2024-09-30 13F CLEAN HARBORS COM 184496107 18,356 -1,513 -7.61 4,437 -1.27 0.0175
2024-08-15 2024-06-30 13F CLEAN HARBORS COMMON 184496107 19,869 -1,171 -5.57 4,493 6.09 0.0187
2024-05-16 2024-03-31 13F CLEAN HARBORS COMMON 184496107 21,040 -644 -2.97 4,236 11.92 0.0183
2024-02-14 2023-12-31 13F CLEAN HARBORS COMMON 184496107 21,684 -26 -0.12 3,784 4.16 0.0174
2023-11-21 2023-09-30 13F CLEAN HARBORS COMMON 184496107 21,710 14,257 191.29 3,633 0.0189
2023-08-22 2023-06-30 13F CLEAN HARBORS EQU 184496107 7,453 -30,887 -80.56 0 -100.00 0.0001
2023-01-26 2022-12-31 13F CLEAN HARBORS COM 184496107 38,340 -6,192 -13.90 5 -99.92 0.0365
2022-10-28 2022-09-30 13F CLEAN HARBORS COM 184496107 44,532 -4,286 -8.78 5,277 20.01 0.0445
2022-08-02 2022-06-30 13F CLEAN HARBORS COM 184496107 48,818 -518 -1.05 4,397 -19.02 0.0361
2022-04-27 2022-03-31 13F CLEAN HARBORS COM 184496107 49,336 -1,328 -2.62 5,430 17.38 0.0394
2022-02-18 2021-12-31 13F CLEAN HARBORS COM 184496107 50,664 -218 -0.43 4,626 -20.79 0.0340
2021-11-22 2021-09-30 13F CLEAN HARBORS COM 184496107 50,882 -5,892 -10.38 5,840 2.40 0.0352
2021-08-26 2021-06-30 13F CLEAN HARBORS COM 184496107 56,774 -13,598 -19.32 5,703 -8.85 0.0340
2021-04-28 2021-03-31 13F CLEAN HARBORS COM 184496107 70,372 -4,757 -6.33 6,257 -0.65 0.0373
2021-01-28 2020-12-31 13F CLEAN HARBORS COM 184496107 75,129 -1,459 -1.90 6,298 39.52 0.0400
2020-10-30 2020-09-30 13F CLEAN HARBORS COM 184496107 76,588 892 1.18 4,514 -0.22 0.0328
2020-07-31 2020-06-30 13F CLEAN HARBORS COM 184496107 75,696 2,458 3.36 4,524 22.01 0.0349
2020-05-01 2020-03-31 13F CLEAN HARBORS COM 184496107 73,238 3,311 4.73 3,708 -37.89 0.0340
2020-02-07 2019-12-31 13F CLEAN HARBORS COM 184496107 69,927 -1,889 -2.63 5,970 8.66 0.0452
2019-10-31 2019-09-30 13F CLEAN HARBORS COM 184496107 71,816 -4,602 -6.02 5,494 2.63 0.0434
2019-08-02 2019-06-30 13F CLEAN HARBORS COM 184496107 76,418 -5,177 -6.34 5,353 -9.38 0.0429
2019-05-02 2019-03-31 13F CLEAN HARBORS COM 184496107 81,595 -2,933 -3.47 5,907 19.36 0.0479
2019-02-06 2018-12-31 13F CLEAN HARBORS COM 184496107 84,528 -7,257 -7.91 4,949 -16.30 0.0420
2018-11-01 2018-09-30 13F CLEAN HARBORS COM 184496107 91,785 -8,685 -8.64 5,913 4.34 0.0477
2018-08-01 2018-06-30 13F CLEAN HARBORS COM 184496107 100,470 -4,100 -3.92 5,667 12.15 0.0396
2018-05-01 2018-03-31 13F CLEAN HARBORS COM 184496107 104,570 -3,359 -3.11 5,053 -16.73 0.0361
2018-02-02 2017-12-31 13F CLEAN HARBORS COM 184496107 107,929 18,682 20.93 6,068 28.91 0.0404
2017-11-06 2017-09-30 13F CLEAN HARBORS COM 184496107 89,247 3,868 4.53 4,707 -2.04 0.0341
2017-08-03 2017-06-30 13F CLEAN HARBORS COM 184496107 85,379 -5,727 -6.29 4,805 -10.05 0.0360
2017-05-03 2017-03-31 13F CLEAN HARBORS COM 184496107 91,106 12,308 15.62 5,342 25.19 0.0405
2017-02-08 2016-12-31 13F CLEAN HARBORS COM 184496107 78,798 36,631 86.87 4,267 103.19 0.0338
2016-08-11 2016-06-30 13F CLEAN HARBORS COM 184496107 42,167 886 2.15 2,100 2.29 0.0181
2016-05-11 2016-03-31 13F CLEAN HARBORS COM 184496107 41,281 -4,133 -9.10 2,053 8.05 0.0183
2016-02-05 2015-12-31 13F CLEAN HARBORS COM 184496107 45,414 -713 -1.55 1,900 -6.31 0.0186
2015-11-12 2015-09-30 13F CLEAN HARBORS COM 184496107 46,127 -47,615 -50.79 2,028 -59.73 0.0192
2015-08-13 2015-06-30 13F CLEAN HARBORS COM 184496107 93,742 45,033 92.45 5,036 82.13 0.0216
2015-05-15 2015-03-31 13F CLEAN HARBORS COM 184496107 48,709 -55,011 -53.04 2,765 -44.50 0.0234
2015-02-13 2014-12-31 13F CLEAN HARBORS COM 184496107 103,720 48,132 86.59 4,982 66.23 0.0215
2014-10-21 2014-09-30 13F CLEAN HARBORS COM 184496107 55,588 2,220 4.16 2,997 -12.60 0.0265
2014-08-12 2014-06-30 13F CLEAN HARBORS COM 184496107 53,368 -913 -1.68 3,429 15.30 0.0292
2014-05-15 2014-03-31 13F CLEAN HARBORS COM 184496107 54,281 6,970 14.73 2,974 4.83 0.0228
2014-02-11 2013-12-31 13F CLEAN HARBORS COM 184496107 47,311 -14,790 -23.82 2,837 -22.12 0.0220
2013-11-12 2013-09-30 13F CLEAN HARBORS COM 184496107 62,101 11,255 22.14 3,643 41.75 0.0254
2013-08-13 2013-06-30 13F/A-1 CLEAN HARBORS COM 184496107 50,846 50,846 2,570 0.0210
2013-08-08 2013-06-30 13F CLEAN HARBORS COM 184496107 302,636 15,295
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.