Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionUtah Retirement Systems
Latest Disclosed Ownership2,700 shares
Latest Disclosed Value $ 774,171
Utah Retirement Systems ownership in CLH1 / Clean Harbors, Inc.

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 2,700 shares of Clean Harbors, Inc. (MX:CLH1) valued at $774,171 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,700 shares of Clean Harbors, Inc.. This represents a change in shares of 0.00% 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 2,700 0 0.00 774 22.27 0.0079
2026-02-17 2025-12-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 633 1.12 0.0060
2025-11-14 2025-09-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 627 0.32 0.0061
2025-08-14 2025-06-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 624 17.29 0.0065
2025-05-15 2025-03-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 532 -14.33 0.0061
2025-02-14 2024-12-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 621 -4.75 0.0068
2024-11-14 2024-09-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 653 6.89 0.0074
2024-08-14 2024-06-30 13F CLEAN HARBORS COM 184496107 2,700 -100 -3.57 611 8.35 0.0073
2024-05-15 2024-03-31 13F CLEAN HARBORS COM 184496107 2,800 0 0.00 564 15.37 0.0066
2024-02-14 2023-12-31 13F CLEAN HARBORS COM 184496107 2,800 0 0.00 489 4.27 0.0062
2023-11-14 2023-09-30 13F CLEAN HARBORS COM 184496107 2,800 0 0.00 469 1.74 0.0067
2023-08-14 2023-06-30 13F CLEAN HARBORS COM 184496107 2,800 0 0.00 460 15.29 0.0064
2023-05-16 2023-03-31 13F CLEAN HARBORS COM 184496107 2,800 100 3.70 399 29.55 0.0058
2023-02-15 2022-12-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 308 3.70 0.0049
2022-11-14 2022-09-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 297 25.32 0.0050
2022-08-16 2022-06-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 237 -21.26 0.0038
2022-05-13 2022-03-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 301 11.90 0.0040
2022-02-14 2021-12-31 13F CLEAN HARBORS COM 184496107 2,700 100 3.85 269 -0.37 0.0033
2021-11-16 2021-09-30 13F CLEAN HARBORS COM 184496107 2,600 -100 -3.70 270 7.57 0.0037
2021-08-16 2021-06-30 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 251 10.57 0.0032
2021-05-17 2021-03-31 13F CLEAN HARBORS COM 184496107 2,700 0 0.00 227 10.73 0.0032
2021-02-16 2020-12-31 13F CLEAN HARBORS COM 184496107 2,700 2,700 205 0.0029
2020-11-16 2020-09-30 13F CLEAN HARBORS COM 184496107 0 -9,770 -100.00 0 -100.00
2020-08-13 2020-06-30 13F/A-1 CLEAN HARBORS COM 184496107 9,770 -100 -1.01 586 15.58 0.0108
2020-08-13 2020-06-30 13F CLEAN HARBORS COM 184496107 9,770 -100 586 10,755.4709
2020-05-15 2020-03-31 13F CLEAN HARBORS COM 184496107 9,870 0 0.00 507 -40.14 0.0110
2020-02-12 2019-12-31 13F CLEAN HARBORS COM 184496107 9,870 100 1.02 847 12.33 0.0149
2019-11-14 2019-09-30 13F CLEAN HARBORS COM 184496107 9,770 0 0.00 754 8.65 0.0143
2019-08-14 2019-06-30 13F CLEAN HARBORS COM 184496107 9,770 47 0.48 694 -0.14 0.0133
2019-05-15 2019-03-31 13F CLEAN HARBORS COM 184496107 9,723 123 1.28 695 46.62 0.0138
2019-02-08 2018-12-31 13F CLEAN HARBORS COM 184496107 9,600 0 0.00 474 -31.00 0.0107
2018-11-13 2018-09-30 13F CLEAN HARBORS COM 184496107 9,600 100 1.05 687 30.11 0.0133
2018-08-10 2018-06-30 13F CLEAN HARBORS COM 184496107 9,500 -200 -2.06 528 11.63 0.0109
2018-05-15 2018-03-31 13F CLEAN HARBORS COM 184496107 9,700 0 0.00 473 -10.08 0.0101
2018-02-14 2017-12-31 13F CLEAN HARBORS COM 184496107 9,700 100 1.04 526 -3.31 0.0111
2017-11-13 2017-09-30 13F CLEAN HARBORS COM 184496107 9,600 0 0.00 544 1.49 0.0122
2017-08-08 2017-06-30 13F CLEAN HARBORS COM 184496107 9,600 0 0.00 536 0.37 0.0125
2017-05-11 2017-03-31 13F CLEAN HARBORS COM 184496107 9,600 100 1.05 534 1.14 0.0128
2017-02-10 2016-12-31 13F CLEAN HARBORS COM 184496107 9,500 0 0.00 528 15.79 0.0133
2016-11-07 2016-09-30 13F CLEAN HARBORS COM 184496107 9,500 0 0.00 456 -7.88 0.0118
2016-08-03 2016-06-30 13F CLEAN HARBORS COM 184496107 9,500 -900 -8.65 495 -3.70 0.0132
2016-05-10 2016-03-31 13F CLEAN HARBORS COM 184496107 10,400 0 0.00 514 18.43 0.0139
2016-02-11 2015-12-31 13F CLEAN HARBORS COM 184496107 10,400 0 0.00 434 -5.24 0.0118
2015-11-03 2015-09-30 13F CLEAN HARBORS COM 184496107 10,400 0 0.00 458 -18.07 0.0131
2015-08-11 2015-06-30 13F CLEAN HARBORS COM 184496107 10,400 -400 -3.70 559 -8.96 0.0149
2015-05-14 2015-03-31 13F CLEAN HARBORS COM 184496107 10,800 300 2.86 614 21.83 0.0161
2015-02-11 2014-12-31 13F CLEAN HARBORS COM 184496107 10,500 0 0.00 504 -10.95 0.0139
2014-11-06 2014-09-30 13F CLEAN HARBORS COM 184496107 10,500 0 0.00 566 -16.02 0.0162
2014-08-08 2014-06-30 13F CLEAN HARBORS COM 184496107 10,500 -300 -2.78 674 13.85 0.0193
2014-05-08 2014-03-31 13F CLEAN HARBORS COM 184496107 10,800 0 0.00 592 -8.64 0.0171
2014-02-05 2013-12-31 13F CLEAN HARBORS COM 184496107 10,800 0 0.00 648 2.37 0.0192
2013-11-06 2013-09-30 13F CLEAN HARBORS COM 184496107 10,800 -100 -0.92 633 14.88 0.0205
2013-08-02 2013-06-30 13F CLEAN HARBORS COM 184496107 10,900 10,900 551 0.0186
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.