Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionVerition Fund Management LLC
Latest Disclosed Ownership2,328 shares
Latest Disclosed Value $ 667,507
Verition Fund Management LLC reports 84.91% decrease in ownership of CLH1 / Clean Harbors, Inc.

On May 15, 2026 - Verition Fund Management LLC filed a 13F-HR form disclosing ownership of 2,328 shares of Clean Harbors, Inc. (MX:CLH1) valued at $667,507 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 15,428 shares of Clean Harbors, Inc.. This represents a change in shares of -84.91% 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)
2026-05-15 2026-03-31 13F CLEAN HARBORS COM 184496107 2,328 -13,100 -84.91 668 -81.56 0.0043
2026-02-13 2025-12-31 13F CLEAN HARBORS COM 184496107 15,428 -20,130 -56.61 3,618 -56.19 0.0142
2025-11-14 2025-09-30 13F CLEAN HARBORS COM 184496107 35,558 16,009 81.89 8,257 82.72 0.0341
2025-08-14 2025-06-30 13F CLEAN HARBORS COM 184496107 19,549 -217 -1.10 4,519 16.02 0.0201
2025-05-15 2025-03-31 13F CLEAN HARBORS COM 184496107 19,766 12,232 162.36 3,896 124.75 0.0181
2025-02-14 2024-12-31 13F CLEAN HARBORS COM 184496107 7,534 -2,124 -21.99 1,734 -25.75 0.0069
2024-11-14 2024-09-30 13F CLEAN HARBORS COM 184496107 9,658 -5,280 -35.35 2,334 -30.91 0.0118
2024-08-14 2024-06-30 13F CLEAN HARBORS COM 184496107 14,938 10,920 271.78 3,378 318.07 0.0185
2024-05-14 2024-03-31 13F CLEAN HARBORS COM 184496107 4,018 527 15.10 809 32.68 0.0055
2024-02-14 2023-12-31 13F CLEAN HARBORS COM 184496107 3,491 -200 -5.42 609 -1.30 0.0048
2023-11-14 2023-09-30 13F CLEAN HARBORS COM 184496107 3,691 200 5.73 618 7.49 0.0072
2023-08-14 2023-06-30 13F CLEAN HARBORS COM 184496107 3,491 -5,465 -61.02 574 -55.02 0.0077
2023-05-15 2023-03-31 13F CLEAN HARBORS COM 184496107 8,956 4,881 119.78 1,277 174.41 0.0177
2023-02-14 2022-12-31 13F CLEAN HARBORS COM 184496107 4,075 -57,077 -93.34 465 -93.09 0.0073
2023-01-18 2022-09-30 13F/A-1 CLEAN HARBORS COM 184496107 61,152 57 0.09 6,725 25.56 0.0752
2022-11-14 2022-09-30 13F CLEAN HARBORS COM 184496107 61,152 57 6,725 0.0630
2022-08-30 2022-06-30 13F/A-1 CLEAN HARBORS COM 184496107 61,095 52,903 645.79 5,356 485.36 0.1059
2022-08-15 2022-06-30 13F CLEAN HARBORS COM 184496107 61,095 52,903 5,356 0.0905
2022-06-02 2022-03-31 13F/A-1 CLEAN HARBORS COM 184496107 8,192 -15,708 -65.72 915 -61.64 0.0110
2022-05-13 2022-03-31 13F CLEAN HARBORS COM 184496107 8,192 -15,708 915 0.0105
2022-05-03 2021-12-31 13F/A-1 CLEAN HARBORS COM 184496107 23,900 -8,666 -26.61 2,385 -29.50 0.0163
2022-02-14 2021-12-31 13F CLEAN HARBORS COM 184496107 23,900 -8,666 2,385 0.0154
2021-11-15 2021-09-30 13F CLEAN HARBORS COM 184496107 32,566 23,037 241.76 3,383 280.97 0.0293
2021-08-16 2021-06-30 13F CLEAN HARBORS COM 184496107 9,529 -5,187 -35.25 888 -28.21 0.0081
2021-05-18 2021-03-31 13F CLEAN HARBORS COM 184496107 14,716 -21,675 -59.56 1,237 -55.33 0.0140
2021-02-16 2020-12-31 13F CLEAN HARBORS COM 184496107 36,391 16,612 83.99 2,769 149.91 0.0243
2020-11-16 2020-09-30 13F CLEAN HARBORS COM 184496107 19,779 19,779 1,108 0.0221
2019-08-14 2019-06-30 13F CLEAN HARBORS COM 184496107 0 -7,897 -100.00 0 -100.00
2019-05-15 2019-03-31 13F CLEAN HARBORS COM 184496107 7,897 -9,664 -55.03 565 -34.83 0.0220
2019-02-14 2018-12-31 13F CLEAN HARBORS COM 184496107 17,561 2,144 13.91 867 -21.47 0.0622
2018-11-14 2018-09-30 13F CLEAN HARBORS COM 184496107 15,417 9,577 163.99 1,104 240.74 0.0395
2018-08-15 2018-06-30 13F CLEAN HARBORS COM 184496107 5,840 -10,649 -64.58 324 -59.75 0.0198
2018-05-15 2018-03-31 13F CLEAN HARBORS COM 184496107 16,489 12,151 280.11 805 242.55 0.0599
2018-02-14 2017-12-31 13F CLEAN HARBORS COM 184496107 4,338 4,338 235 0.0217
2017-11-14 2017-09-30 13F CLEAN HARBORS COM 184496107 0 -7,335 -100.00 0 -100.00
2017-08-15 2017-06-30 13F CLEAN HARBORS COM 184496107 7,335 -2,350 -24.26 410 -23.93 0.0398
2017-05-12 2017-03-31 13F CLEAN HARBORS COM 184496107 9,685 -5,900 -37.86 539 -37.83 0.0503
2017-02-14 2016-12-31 13F CLEAN HARBORS COM 184496107 15,585 15,585 867 0.0748
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.