Clean Harbors, Inc
A North American environmental and industrial services company that collects, treats, and disposes of hazardous and non-hazardous waste, and through its Safety-Kleen arm re-refines used oil into fresh base oil and lubricants for manufacturers, refineries, and others. It began in 1980 when Alan McKim started a four-person tank-cleaning business in the Boston area with a single truck. One of its early jobs was cleaning up the 1984 oil spill from the beached tanker Eldia off Cape Cod, helping launch its emergency-response reputation.
Granted 13.1K · Sold 758.0K
Granted 116.8K · Bought 4.0K · Sold 27.1K
Granted 39.2K · Sold 29.1K
Granted 13.4K · Sold 11.2K
Granted 114.3K · Sold 75.1K
Granted 5.2K · Sold 2.3K
Granted 2.1K
Granted 5.5K
Granted 22.9K · Sold 11.6K
Granted 10.4K
Granted 32.8K · Sold 14.0K
Granted 19.5K
Granted 27.3K · Bought 1.1K · Sold 17.3K
Granted 5.5K · Sold 5.9K
Granted 5.5K · Sold 3.0K
Granted 2.3K
Granted 11.0K · Sold 945
Granted 5.5K
Granted 5.5K · Sold 5.3K
Granted 5.5K · Sold 9.9K
Granted 7.7K · Sold 122
Granted 6.6K · Sold 836
Granted 2.1K · Sold 20.0K
Granted 4.5K
Granted 3.7K · Bought 460
Granted 4.5K · Sold 893
Sold 3.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| McKim Alan SEXEC CHAIR, CTO., Director · 52 transactions | — | 2.32M | 13.1K | — | 758.0K |
| Battles Michael LouisCO-CEO, Director · 41 transactions | +70.1% | 97.5K | 116.8K | 4.0K | 27.1K |
| Weber Brian PEVP (CHESI) · 41 transactions | -19.9% | 48.7K | 39.2K | — | 29.1K |
| Curtis George LEXEC. VICE PRESIDENT (CHESI) · 26 transactions | -11.9% | 46.0K | 13.4K | — | 11.2K |
| Gerstenberg Eric WCO-CEO · 43 transactions | -49% | 38.9K | 114.3K | — | 75.1K |
| Twohig Michael JEVP (CHESI) · 10 transactions | +4.6% | 28.9Kas of Mar 2023 | 5.2K | — | 2.3K |
| Shields Thomas JDirector · 2 transactions | +7.9% | 28.8Kas of May 2022 | 2.1K | — | — |
| Galante Edward GDirector · 7 transactions | +3.3% | 25.5K | 5.5K | — | — |
| Gabriel Sharon M.EVP/CIO (CHESI) · 38 transactions | -6.2% | 22.5K | 22.9K | — | 11.6K |
| Underwood RebeccaPRESIDENT & EVP FACILITIES · 17 transactions | — | 18.7K | 10.4K | — | — |
| Speights RobertPRESIDENT, INDUSTRIAL SERVICES · 31 transactions | -49.9% | 16.3Kas of May 2025 | 32.8K | — | 14.0K |
| Diderich JeroenEVP&President of Sales&Service · 8 transactions | — | 16.2K | 19.5K | — | — |
| Dugas Eric J.EVP CHIEF FINANCIAL OFFICER · 47 transactions | -28.9% | 15.3K | 27.3K | 1.1K | 17.3K |
| States LaurenDirector · 22 transactions | -11.4% | 11.4K | 5.5K | — | 5.9K |
| Welch John R.Director · 11 transactions | +7% | 10.9K | 5.5K | — | 3.0K |
| Geer Charles H. IIEVP, Industrial Services · 6 transactions | — | 10.8K | 2.3K | — | — |
| McDuffie MelkeyaEVP, HUMAN RESOURCES OFFICER · 6 transactions | — | 10.1Kas of May 2023 | 11.0K | — | 945 |
| Willett RobertDirector · 6 transactions | +123% | 10.0K | 5.5K | — | — |
| Robertson AndreaDirector · 15 transactions | -12.8% | 9.8K | 5.5K | — | 5.3K |
| Preston John TDirector · 10 transactions | -38.4% | 7.0K | 5.5K | — | 9.9K |
| Harrison Robert W.EVP, EHS · 19 transactions | — | 7.0K | 7.7K | — | 122 |
| Reed Marcy L.Director · 8 transactions | — | 5.7K | 6.6K | — | 836 |
| Banucci Eugene GDirector · 5 transactions | -76.2% | 5.6Kas of Jun 2023 | 2.1K | — | 20.0K |
| Stewart Shelley JRDirector · 5 transactions | — | 4.5K | 4.5K | — | — |
| Polito KarynDirector · 6 transactions | — | 4.1K | 3.7K | 460 | — |
| Quirk Alison A.Director · 6 transactions | — | 3.6K | 4.5K | — | 893 |
| Knapp Jeffrey HerbertEVP - HR (CHESI) · 6 transactions | -81.7% | 2.9Kas of Dec 2021 | — | — | 3.0K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -990.1K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.