| $1B | ||
| $100M | ||
| $54M | ||
| $40M | ||
| $32M | ||
| $31M |
Buys | $175,114 | 2 | 13 |
Sells | $63,395,624 | 13 | 87 |
| Polito Karyn | director | 2 | $175,114 | 0 | $0 | $175,114 |
| Welch John R. | director | 0 | $0 | 1 | $204,803 | $-204,803 |
| States Lauren | director | 0 | $0 | 1 | $225,804 | $-225,804 |
| Reed Marcy L. | director | 0 | $0 | 1 | $240,718 | $-240,718 |
| Robertson Andrea | director | 0 | $0 | 1 | $247,754 | $-247,754 |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | 0 | $0 | 1 | $784,292 | $-784,292 |
| Gabriel Sharon M. | EVP/CIO (CHESI) | 0 | $0 | 1 | $998,528 | $-998,528 |
| Weber Brian P | EVP (CHESI) | 0 | $0 | 1 | $1.37M | $-1.37M |
| GERSTENBERG ERIC W | CO-CEO | 0 | $0 | 4 | $1.94M | $-1.94M |
| MCKIM ALAN S | EXEC CHAIR, CTO. | 0 | $0 | 2 | $57.38M | $-57.38M |
Clean Harbors, Inc. delivers a comprehensive range of environmental and industrial services across North America. The company is structured into two primary divisions: Environmental Services and Safety-Kleen Sustainability Solutions. The Environmental Services segment manages the entire lifecycle of waste, from collection and transportation to treatment and final disposal of both hazardous and non-hazardous materials. This involves employing various techniques including resource reclamation, physical processing, fuel blending, incineration, …
Over the last 12 months, insiders at Clean Harbors, Inc. have bought $175,114 and sold $63.4M worth of Clean Harbors, Inc. stock.
On average, over the past 5 years, insiders at Clean Harbors, Inc. have bought $339,921 and sold $37.92M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Polito Karyn (director) — $175,114.
The last purchase of 125 shares for transaction amount of $39,354 was made by Polito Karyn (director) on 2026‑10‑29.
| 2026-10-29 | Polito Karyn | director | 125 0.0002% | $314.83 | $39,354 | -4.29% | ||
| 2026-08-14 | Sale | GERSTENBERG ERIC W | CO-CEO | 2,500 0.0047% | $321.34 | $803,350 | -1.80% | |
| 2026-08-03 | Sale | Robertson Andrea | director | 789 0.0015% | $314.01 | $247,754 | +1.61% | |
| 2026-05-26 | Sale | States Lauren | director | 789 0.0015% | $286.19 | $225,804 | +8.56% | |
| 2026-05-11 | Polito Karyn | director | 460 0.0009% | $295.13 | $135,760 | +5.78% | ||
| 2026-03-18 | Sale | GERSTENBERG ERIC W | CO-CEO | 1,000 0.0019% | $293.00 | $293,000 | +5.25% | |
| 2026-03-18 | Sale | Reed Marcy L. | director | 836 0.0015% | $287.94 | $240,718 | +5.25% | |
| 2026-03-17 | Sale | Weber Brian P | EVP (CHESI) | 4,683 0.0089% | $293.39 | $1.37M | +5.40% | |
| 2026-03-04 | Sale | MCKIM ALAN S | EXEC CHAIR, CTO. | 100,000 0.1872% | $292.65 | $29.27M | +3.89% | |
| 2026-02-23 | Sale | GERSTENBERG ERIC W | CO-CEO | 2,500 0.0046% | $279.86 | $699,650 | +8.17% | |
| 2026-02-20 | Sale | Gabriel Sharon M. | EVP/CIO (CHESI) | 3,540 0.0065% | $282.07 | $998,528 | +6.69% | |
| 2026-02-20 | Sale | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | 2,788 0.0051% | $281.31 | $784,292 | +6.69% | |
| 2026-02-19 | Sale | MCKIM ALAN S | EXEC CHAIR, CTO. | 100,000 0.1897% | $281.14 | $28.11M | +7.95% | |
| 2026-02-19 | Sale | Welch John R. | director | 750 0.0014% | $273.07 | $204,803 | +7.95% | |
| 2025-12-16 | Sale | GERSTENBERG ERIC W | CO-CEO | 601 0.0011% | $240.90 | $144,781 | +24.47% | |
| 2025-08-01 | Battles Michael Louis | CO-CEO | 2,000 0.0037% | $233.50 | $467,000 | +11.68% | ||
| 2025-07-31 | Sale | Robertson Andrea | director | 836 0.0015% | $233.64 | $195,323 | +10.89% | |
| 2025-06-13 | Sale | Weber Brian P | EVP (CHESI) | 3,035 0.0057% | $227.17 | $689,461 | +7.34% | |
| 2025-06-06 | Sale | GERSTENBERG ERIC W | CO-CEO | 8,076 0.015% | $225.23 | $1.82M | +7.27% | |
| 2025-06-05 | Sale | MCKIM ALAN S | EXEC CHAIR, CTO. | 58,156 0.1081% | $223.80 | $13.02M | +7.86% |
| MCKIM ALAN S | EXEC CHAIR, CTO. | 2065368 3.9169% | $608.89M | 1 | 87 | +5.89% |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | 20021 0.038% | $5.9M | 1 | 17 | +23.79% |
| Polito Karyn | director | 4252 0.0081% | $1.25M | 2 | 0 | |
| Battles Michael Louis | CO-CEO | 82911 0.1572% | $24.44M | 4 | 17 | +31.14% |
| FEINBERG STEPHEN | 20000 0.0379% | $5.9M | 3 | 12 | <0.0001% | |
| Speights Robert | PRESIDENT, INDUSTRIAL SERVICES | 16310 0.0309% | $4.81M | 3 | 9 | +60.57% |
| Knapp Jeffrey Herbert | EVP - HR (CHESI) | 2853 0.0054% | $841,092.93 | 6 | 3 | +20.9% |
$2,507,840,963 | 181 | 4.06% | $74.37B | |
$3,024,833 | 146 | 33.01% | $276.9M | |
$11,235,644 | 118 | 14.56% | $21.3M | |
$1,292,796 | 47 | -6.29% | $5.06M | |
$1,400,134 | 21 | 15.07% | $6.03B |
| Increased Positions | 249 | +33.24% | 7M | +13.17% |
| Decreased Positions | 326 | -43.52% | 5M | -10.17% |
| New Positions | 86 | New | 3M | New |
| Sold Out Positions | 97 | Sold Out | 1M | Sold Out |
| Total Postitions | 672 | -10.28% | 52M | +3% |
| Wellington Management Group Llp | $1.36M | 10.52% | 5.57M | -190,853 | -3.31% | 2025-09-30 |
| Vanguard Group Inc | $1.11M | 8.59% | 4.55M | -30,868 | -0.67% | 2025-09-30 |
| Blackrock, Inc. | $1.1M | 8.56% | 4.53M | -10,831 | -0.24% | 2025-09-30 |
| D1 Capital Partners L.P. | $595,353.00 | 4.61% | 2.45M | +1M | +69.4% | 2025-09-30 |
| Janus Henderson Group Plc | $525,935.00 | 4.08% | 2.16M | +7,203 | +0.34% | 2025-09-30 |
| Pictet Asset Management Holding Sa | $504,290.00 | 3.91% | 2.07M | +159,336 | +8.33% | 2025-09-30 |
| State Street Corp | $368,963.00 | 2.86% | 1.52M | +12,452 | +0.83% | 2025-09-30 |
| Clearbridge Investments, Llc | $347,231.00 | 2.69% | 1.43M | +102,208 | +7.72% | 2025-09-30 |
| Snyder Capital Management L P | $279,592.00 | 2.17% | 1.15M | +83,638 | +7.85% | 2025-09-30 |
| Bessemer Group Inc | $267,225.00 | 2.07% | 1.1M | +87,322 | +8.64% | 2025-09-30 |