Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership112,106 shares
Latest Disclosed Value $ 32,144,153
Principal Financial Group Inc reports 3.79% increase in ownership of CLH1 / Clean Harbors, Inc.

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 112,106 shares of Clean Harbors, Inc. (MX:CLH1) valued at $32,144,153 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 108,009 shares of Clean Harbors, Inc.. This represents a change in shares of 3.79% 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)
2026-05-04 2026-03-31 13F CLEAN HARBORS COM 184496107 112,106 4,097 3.79 32,144 26.93 0.0172
2026-02-02 2025-12-31 13F CLEAN HARBORS COM 184496107 108,009 -3,974 -3.55 25,326 -2.61 0.0129
2025-11-04 2025-09-30 13F CLEAN HARBORS COM 184496107 111,983 -2,239 -1.96 26,005 -1.52 0.0131
2025-08-08 2025-06-30 13F CLEAN HARBORS COM 184496107 114,222 -2,381 -2.04 26,406 14.89 0.0140
2025-04-28 2025-03-31 13F CLEAN HARBORS COM 184496107 116,603 448 0.39 22,982 -14.02 0.0129
2025-01-31 2024-12-31 13F CLEAN HARBORS COM 184496107 116,155 -1,340 -1.14 26,732 -5.87 0.0146
2024-10-31 2024-09-30 13F CLEAN HARBORS COM 184496107 117,495 -49,645 -29.70 28,400 -24.87 0.0156
2024-07-29 2024-06-30 13F CLEAN HARBORS COM 184496107 167,140 -22,357 -11.80 37,799 -0.91 0.0224
2024-04-29 2024-03-31 13F CLEAN HARBORS COM 184496107 189,497 4,588 2.48 38,148 18.22 0.0224
2024-02-07 2023-12-31 13F CLEAN HARBORS COM 184496107 184,909 -893 -0.48 32,268 3.77 0.0206
2023-11-02 2023-09-30 13F CLEAN HARBORS COM 184496107 185,802 -3,208 -1.70 31,096 0.05 0.0223
2023-08-07 2023-06-30 13F CLEAN HARBORS COM 184496107 189,010 -10,066 -5.06 31,079 9.51 0.0212
2023-05-09 2023-03-31 13F CLEAN HARBORS COM 184496107 199,076 1,803 0.91 28,380 26.07 0.0203
2023-02-09 2022-12-31 13F CLEAN HARBORS COM 184496107 197,273 1,032 0.53 22,513 4.31 0.0170
2022-11-09 2022-09-30 13F CLEAN HARBORS COM 184496107 196,241 -1,015 -0.51 21,582 24.79 0.0172
2022-08-10 2022-06-30 13F CLEAN HARBORS COM 184496107 197,256 187,354 1,892.08 17,294 1,463.65 0.0128
2022-05-09 2022-03-31 13F CLEAN HARBORS COM 184496107 9,902 -160,289 -94.18 1,106 -93.49 0.0004
2022-05-09 2022-03-31 13F CLEAN HARBORS COM 184496107 170,316 19,014
2022-02-09 2021-12-31 13F CLEAN HARBORS COM 184496107 170,191 -2,915 -1.68 16,980 -5.57 0.0101
2021-11-09 2021-09-30 13F CLEAN HARBORS COM 184496107 173,106 -1,589 -0.91 17,981 10.51 0.0117
2021-08-10 2021-06-30 13F CLEAN HARBORS COM 184496107 174,695 1,290 0.74 16,271 11.63 0.0105
2021-05-10 2021-03-31 13F CLEAN HARBORS COM 184496107 173,405 22,849 15.18 14,576 27.22 0.0103
2021-02-23 2020-12-31 13F/A-1 CLEAN HARBORS COM 184496107 150,556 -1,270 -0.84 11,457 34.68 0.0085
2021-02-08 2020-12-31 13F CLEAN HARBORS COM 184496107 150,556 -1,270 11,457 4,507.3604
2020-11-06 2020-09-30 13F CLEAN HARBORS COM 184496107 151,826 -5,232 -3.33 8,507 -9.69 0.0072
2020-08-05 2020-06-30 13F CLEAN HARBORS COM 184496107 157,058 -4,220 -2.62 9,420 13.78 0.0084
2020-05-12 2020-03-31 13F CLEAN HARBORS COM 184496107 161,278 -67,595 -29.53 8,279 -57.81 0.0092
2020-02-05 2019-12-31 13F CLEAN HARBORS COM 184496107 228,873 571 0.25 19,625 11.35 0.0164
2019-11-13 2019-09-30 13F CLEAN HARBORS COM 184496107 228,302 -1,470 -0.64 17,625 7.88 0.0155
2019-08-12 2019-06-30 13F CLEAN HARBORS COM 184496107 229,772 5,088 2.26 16,337 1.65 0.0147
2019-05-10 2019-03-31 13F CLEAN HARBORS COM 184496107 224,684 770 0.34 16,072 45.45 0.0150
2019-02-14 2018-12-31 13F CLEAN HARBORS COM 184496107 223,914 -3,883 -1.70 11,050 -32.23 0.0118
2018-11-14 2018-09-30 13F CLEAN HARBORS COM 184496107 227,797 2,021 0.90 16,305 30.00 0.0144
2018-08-13 2018-06-30 13F CLEAN HARBORS COM 184496107 225,776 8,099 3.72 12,542 18.04 0.0115
2018-05-14 2018-03-31 13F CLEAN HARBORS COM 184496107 217,677 4,092 1.92 10,625 -8.22 0.0102
2018-02-12 2017-12-31 13F CLEAN HARBORS COM 184496107 213,585 -853 -0.40 11,576 -4.79 0.0107
2017-11-02 2017-09-30 13F CLEAN HARBORS COM 184496107 214,438 -8,645 -3.88 12,159 -2.38 0.0118
2017-08-08 2017-06-30 13F CLEAN HARBORS COM 184496107 223,083 18,832 9.22 12,455 9.64 0.0125
2017-05-11 2017-03-31 13F CLEAN HARBORS COM 184496107 204,251 4,981 2.50 11,360 2.44 0.0137
2017-02-13 2016-12-31 13F CLEAN HARBORS COM 184496107 199,270 -10,383 -4.95 11,089 10.24 0.0141
2016-11-10 2016-09-30 13F CLEAN HARBORS COM 184496107 209,653 21,138 11.21 10,059 2.39 0.0133
2016-08-09 2016-06-30 13F CLEAN HARBORS COM 184496107 188,515 22,979 13.88 9,824 20.27 0.0137
2016-05-10 2016-03-31 13F CLEAN HARBORS COM 184496107 165,536 -3,538 -2.09 8,168 15.99 0.0119
2016-02-09 2015-12-31 13F CLEAN HARBORS COM 184496107 169,074 379 0.22 7,042 -5.07 0.0105
2015-11-12 2015-09-30 13F/A-1 CLEAN HARBORS COM 184496107 168,695 11,762 7.49 7,418 -12.05 0.0117
2015-11-09 2015-09-30 13F CLEAN HARBORS COM 184496107 168,695 7,418
2015-08-10 2015-06-30 13F CLEAN HARBORS COM 184496107 156,933 5,306 3.50 8,434 -2.03 0.0126
2015-05-14 2015-03-31 13F/A-1 CLEAN HARBORS COM 184496107 151,627 3,880 2.63 8,609 21.25 0.0128
2015-05-12 2015-03-31 13F CLEAN HARBORS COM 184496107 151,627 8,609
2015-02-12 2014-12-31 13F CLEAN HARBORS COM 184496107 147,747 9,334 6.74 7,100 -4.86 0.0110
2014-11-13 2014-09-30 13F CLEAN HARBORS COM 184496107 138,413 6,143 4.64 7,463 -12.18 0.0127
2014-08-12 2014-06-30 13F CLEAN HARBORS COM 184496107 132,270 -21,702 -14.09 8,498 0.73 0.0143
2014-05-13 2014-03-31 13F CLEAN HARBORS COM 184496107 153,972 5,609 3.78 8,436 -5.17 0.0150
2014-02-12 2013-12-31 13F CLEAN HARBORS COM 184496107 148,363 25,926 21.17 8,896 23.87 0.0166
2013-11-05 2013-09-30 13F CLEAN HARBORS COM 184496107 122,437 -20,101 -14.10 7,182 -0.29 0.0148
2013-08-12 2013-06-30 13F CLEAN HARBORS COM 184496107 142,538 142,538 7,203 0.0160
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.