Clean Harbors, Inc.
US ˙ NYSE ˙ US1844961078

SecurityCLH / Clean Harbors, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership194,039 shares
Latest Disclosed Value $ 55,584,266
Neuberger Berman Group LLC reports 11.25% increase in ownership of CLH / Clean Harbors, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 194,039 shares of Clean Harbors, Inc. (US:CLH) valued at $55,636,802 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 174,416 shares of Clean Harbors, Inc.. This represents a change in shares of 11.25% during the quarter. The current value of the position is $55,617,399 USD.

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)
2026-05-14 2026-03-31 13F CLEAN HARBORS Common 184496107 194,039 19,623 11.25 55,584 35.83 0.0216
2026-02-13 2025-12-31 13F CLEAN HARBORS Common 184496107 174,416 -71,881 -29.18 40,922 -28.46 0.0305
2025-11-12 2025-09-30 13F CLEAN HARBORS Common 184496107 246,297 -29,661 -10.75 57,205 -10.33 0.0418
2025-08-25 2025-06-30 13F/A-1 CLEAN HARBORS Common 184496107 275,958 13,736 5.24 63,796 23.42 0.0491
2025-08-13 2025-06-30 13F CLEAN HARBORS Common 184496107 275,958 13,736 63,796 0.0254
2025-05-13 2025-03-31 13F CLEAN HARBORS Common 184496107 262,222 49,284 23.14 51,691 5.48 0.0433
2025-02-13 2024-12-31 13F CLEAN HARBORS Common 184496107 212,938 29,925 16.35 49,007 10.85 0.0389
2024-11-14 2024-09-30 13F CLEAN HARBORS Common 184496107 183,013 10,201 5.90 44,210 13.12 0.0345
2024-11-14 2024-06-30 13F/A-1 CLEAN HARBORS Common 184496107 172,812 -17,520 -9.20 39,081 2.02 0.0321
2024-08-13 2024-06-30 13F CLEAN HARBORS Common 184496107 172,812 -17,520 39,081 0.0321
2024-11-14 2024-03-31 13F/A-1 CLEAN HARBORS Common 184496107 190,332 -109,838 -36.59 38,310 -26.90 0.0317
2024-05-13 2024-03-31 13F CLEAN HARBORS Common 184496107 190,332 -109,838 38,310 0.0317
2024-11-14 2023-12-31 13F/A-2 CLEAN HARBORS Common 184496107 300,170 -20,245 -6.32 52,404 -2.30 0.0457
2024-02-09 2023-12-31 13F CLEAN HARBORS Common 184496107 300,170 -20,245 52,404 0.0457
2023-11-14 2023-09-30 13F CLEAN HARBORS Common 184496107 320,415 29,325 10.07 53,639 12.17 0.0489
2023-08-11 2023-06-30 13F CLEAN HARBORS Common 184496107 291,090 -708 -0.24 47,821 15.16 0.0428
2023-05-12 2023-03-31 13F CLEAN HARBORS Common 184496107 291,798 -104,236 -26.32 41,524 -8.18 0.0385
2023-02-13 2022-12-31 13F CLEAN HARBORS Common 184496107 396,034 8,288 2.14 45,221 6.08 0.0443
2022-11-15 2022-09-30 13F CLEAN HARBORS Common 184496107 387,746 19,539 5.31 42,628 32.06 0.0445
2022-08-15 2022-06-30 13F CLEAN HARBORS Common 184496107 368,207 11,621 3.26 32,279 -18.95 0.0324
2022-05-23 2022-03-31 13F/A-1 CLEAN HARBORS Common 184496107 356,586 -10,789 -2.94 39,824 10.24 0.0337
2022-05-13 2022-03-31 13F CLEAN HARBORS Common 184496107 356,586 -10,789 39,138 0.0175
2022-02-11 2021-12-31 13F CLEAN HARBORS Common 184496107 367,375 711 0.19 36,124 -3.70 0.0283
2021-11-12 2021-09-30 13F CLEAN HARBORS Common 184496107 366,664 -6,483 -1.74 37,511 9.07 0.0328
2021-08-13 2021-06-30 13F CLEAN HARBORS Common 184496107 373,147 -6,043 -1.59 34,393 8.71 0.0300
2021-05-13 2021-03-31 13F CLEAN HARBORS Common 184496107 379,190 -21,586 -5.39 31,636 4.22 0.0302
2021-02-10 2020-12-31 13F CLEAN HARBORS Common 184496107 400,776 -4,618 -1.14 30,356 33.82 0.0315
2020-11-12 2020-09-30 13F CLEAN HARBORS Common 184496107 405,394 92,570 29.59 22,685 20.91 0.0269
2020-08-13 2020-06-30 13F CLEAN HARBORS Common 184496107 312,824 -7,005 -2.19 18,762 14.30 0.0233
2020-05-14 2020-03-31 13F CLEAN HARBORS Common 184496107 319,829 5,530 1.76 16,415 -39.10 0.0250
2020-02-12 2019-12-31 13F CLEAN HARBORS Common 184496107 314,299 -66,615 -17.49 26,953 -8.32 0.0315
2019-11-13 2019-09-30 13F CLEAN HARBORS Common 184496107 380,914 -130,060 -25.45 29,399 -19.06 0.0359
2019-08-13 2019-06-30 13F CLEAN HARBORS Common 184496107 510,974 -5,515 -1.07 36,321 -1.68 0.0434
2019-05-13 2019-03-31 13F CLEAN HARBORS Common 184496107 516,489 11,424 2.26 36,940 48.25 0.0453
2019-02-12 2018-12-31 13F CLEAN HARBORS Common 184496107 505,065 -15,015 -2.89 24,918 -33.06 0.0347
2018-11-16 2018-09-30 13F/A-1 CLEAN HARBORS Common 184496107 520,080 -17,701 -3.29 37,223 24.63 0.0422
2018-11-13 2018-09-30 13F CLEAN HARBORS Common 184496107 520,080 -17,701 37,223
2018-08-13 2018-06-30 13F CLEAN HARBORS Common 184496107 537,781 -13,709 -2.49 29,867 10.96 0.0330
2018-05-08 2018-03-31 13F CLEAN HARBORS Common 184496107 551,490 -28,068 -4.84 26,916 -14.30 0.0308
2018-02-14 2017-12-31 13F CLEAN HARBORS Common 184496107 579,558 -65,527 -10.16 31,409 -14.13 0.0361
2017-11-15 2017-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 645,085 53,950 9.13 36,576 10.83 0.0458
2017-08-08 2017-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 591,135 -25,615 -4.15 33,003 -3.79 0.0424
2017-05-10 2017-03-31 13F CLEAN HARBORS COMMON STOCK 184496107 616,750 5,190 0.85 34,304 0.80 0.0443
2017-02-06 2016-12-31 13F CLEAN HARBORS COMMON STOCK 184496107 611,560 -11,507 -1.85 34,033 13.84 0.0457
2016-11-02 2016-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 623,067 24,029 4.01 29,895 -4.23 0.0406
2016-08-05 2016-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 599,038 7,966 1.35 31,216 7.04 0.0430
2016-05-06 2016-03-31 13F CLEAN HARBORS COMMON STOCK 184496107 591,072 57,726 10.82 29,163 31.28 0.0401
2016-01-28 2015-12-31 13F CLEAN HARBORS COMMON STOCK 184496107 533,346 -2,385 -0.45 22,214 -5.70 0.0291
2015-11-10 2015-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 535,731 13,573 2.60 23,556 -16.05 0.0304
2015-07-31 2015-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 522,158 47,656 10.04 28,061 4.15 0.0312
2015-05-06 2015-03-31 13F CLEAN HARBORS COMMON STOCK 184496107 474,502 474,502 0.00 26,942 0.0288
2015-02-05 2014-12-31 13F CLEAN HARBORS COMMON STOCK 184496107 0 -354,646 -100.00 0 -100.00
2014-11-04 2014-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 354,646 502 0.14 19,123 -15.96 0.0196
2014-08-05 2014-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 354,144 -13,596 -3.70 22,754 12.93 0.0222
2014-05-05 2014-03-31 13F CLEAN HARBORS COMMON STOCK 184496107 367,740 110,612 43.02 20,148 30.69 0.0205
2014-02-11 2013-12-31 13F CLEAN HARBORS COMMON STOCK 184496107 257,128 78,787 44.18 15,417 47.38 0.0158
2013-10-29 2013-09-30 13F/A-1 CLEAN HARBORS COMMON STOCK 184496107 178,341 -75,467 -29.73 10,461 -18.43 0.0116
2013-10-29 2013-09-30 13F CLEAN HARBORS COMMON STOCK 184496107 44,600 3,003
2013-08-13 2013-06-30 13F CLEAN HARBORS COMMON STOCK 184496107 253,808 253,808 12,825 0.0152
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.