Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionEnsign Peak Advisors, Inc
Latest Disclosed Ownership12,343 shares
Latest Disclosed Value $ 3,539,108
Ensign Peak Advisors, Inc reports 337.54% increase in ownership of CLH1 / Clean Harbors, Inc.

On May 13, 2026 - Ensign Peak Advisors, Inc filed a 13F-HR form disclosing ownership of 12,343 shares of Clean Harbors, Inc. (MX:CLH1) valued at $3,539,108 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,821 shares of Clean Harbors, Inc.. This represents a change in shares of 337.54% 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)
2026-05-13 2026-03-31 13F CLEAN HARBORS COM 184496107 12,343 9,522 337.54 3,539 435.40 0.0066
2026-02-12 2025-12-31 13F CLEAN HARBORS COM 184496107 2,821 -4,750 -62.74 661 -62.40 0.0012
2025-11-13 2025-09-30 13F CLEAN HARBORS COM 184496107 7,571 -7,150 -48.57 1,758 -48.34 0.0029
2025-08-12 2025-06-30 13F CLEAN HARBORS COM 184496107 14,721 -2,800 -15.98 3,403 -1.45 0.0058
2025-05-14 2025-03-31 13F CLEAN HARBORS COM 184496107 17,521 0 0.00 3,453 -14.36 0.0066
2025-02-14 2024-12-31 13F CLEAN HARBORS COM 184496107 17,521 0 0.00 4,032 -4.79 0.0072
2024-11-14 2024-09-30 13F CLEAN HARBORS COM 184496107 17,521 0 0.00 4,235 6.89 0.0074
2024-08-13 2024-06-30 13F CLEAN HARBORS COM 184496107 17,521 0 0.00 3,962 12.33 0.0072
2024-05-14 2024-03-31 13F CLEAN HARBORS COM 184496107 17,521 -1,764 -9.15 3,527 4.81 0.0064
2024-02-14 2023-12-31 13F CLEAN HARBORS COM 184496107 19,285 3,465 21.90 3,365 27.13 0.0067
2023-11-13 2023-09-30 13F CLEAN HARBORS COM 184496107 15,820 -275 -1.71 2,648 0.04 0.0057
2023-08-14 2023-06-30 13F CLEAN HARBORS COM 184496107 16,095 -960 -5.63 2,647 8.84 0.0054
2023-05-15 2023-03-31 13F CLEAN HARBORS COM 184496107 17,055 -970 -5.38 2,431 18.18 0.0053
2023-02-13 2022-12-31 13F Clean Harbors COM 184496107 18,025 870 5.07 2,057 9.01 0.0046
2022-11-14 2022-09-30 13F Clean Harbors COM 184496107 17,155 -475 -2.69 1,887 22.06 0.0047
2022-08-12 2022-06-30 13F Clean Harbors COM 184496107 17,630 -545 -3.00 1,546 -23.80 0.0037
2022-05-16 2022-03-31 13F Clean Harbors COM 184496107 18,175 -9,025 -33.18 2,029 -25.24 0.0041
2022-02-11 2021-12-31 13F Clean Harbors COM 184496107 27,200 -26,620 -49.46 2,714 -51.45 0.0052
2021-11-12 2021-09-30 13F Clean Harbors COM 184496107 53,820 9,580 21.65 5,590 35.65 0.0117
2021-08-13 2021-06-30 13F Clean Harbors COM 184496107 44,240 3,005 7.29 4,121 18.90 0.0083
2021-05-12 2021-03-31 13F Clean Harbors COM 184496107 41,235 0 0.00 3,466 10.45 0.0075
2021-02-12 2020-12-31 13F Clean Harbors COM 184496107 41,235 -1,850 -4.29 3,138 29.99 0.0071
2020-11-12 2020-09-30 13F Clean Harbors COM 184496107 43,085 -580 -1.33 2,414 -7.83 0.0061
2020-08-12 2020-06-30 13F Clean Harbors COM 184496107 43,665 -7,197 -14.15 2,619 0.31 0.0071
2020-05-11 2020-03-31 13F Clean Harbors COM 184496107 50,862 9,627 23.35 2,611 -26.16 0.0087
2020-02-14 2019-12-31 13F Clean Harbors COM 184496107 41,235 41,235 3,536 0.0093
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.