Clean Harbors Inc
CLH- Exchange
- NYSE
- Industry
- Hazardous Waste Management
- SEC CIK
- 0000822818
In the last 90 days, Clean Harbors Inc insiders filed 0 open-market purchases and 5 sales; 663 institutions reported holding it in 13F filings for Q2 2026, worth $14.8B in total; D1 Capital Partners is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Clean Harbors Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 5 filings
- 3 insiders, $2.83M in total
- Insiders trading
- 3
- Net value
- −$2.83M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Clean Harbors Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Gerstenberg Eric W | CO-CEO | 56,793 | Aug 18, 2026 | 7 |
| Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | 17,620 | Aug 14, 2026 | 4 |
| Battles Michael Louis | CO-CEO | 94,355 | Aug 12, 2026 | 3 |
| Curtis George L | EXEC. VICE PRESIDENT (CHESI) | 44,291 | Aug 11, 2026 | 4 |
| Robertson Andrea | Director | 8,979 | Aug 3, 2026 | 3 |
| McKim Alan S | EXEC CHAIR, CTO. | 30,154 | Jul 20, 2026 | 5 |
| Gabriel Sharon M. | EVP/CIO (CHESI) | 20,706 | Jul 6, 2026 | 5 |
| Weber Brian P | EVP (CHESI) | 47,914 | Jul 6, 2026 | 3 |
| Underwood Rebecca | PRESIDENT & EVP FACILITIES | 18,373 | Jul 6, 2026 | 4 |
| Geer Charles H. II | EVP, Industrial Services | 10,799 | Jul 6, 2026 | 5 |
| Diderich Jeroen | EVP&President of Sales&Service | 16,152 | Jun 3, 2026 | 2 |
| States Lauren | Director | 11,359 | May 27, 2026 | 3 |
| Preston John T | Director | 7,044 | May 22, 2026 | 1 |
| Galante Edward G | Director | 25,461 | May 22, 2026 | 1 |
| Willett Robert | Director | 10,028 | May 22, 2026 | 1 |
| Stewart Shelley JR | Director | 4,523 | May 22, 2026 | 1 |
| Quirk Alison A. | Director | 3,630 | May 22, 2026 | 1 |
| Welch John R. | Director | 10,889 | May 22, 2026 | 3 |
| Reed Marcy L. | Director | 5,733 | May 22, 2026 | 2 |
| Polito Karyn | Director | 4,127 | May 22, 2026 | 2 |
| Harrison Robert W. | EVP, EHS | 6,648 | Mar 17, 2026 | 4 |
| Speights Robert | PRESIDENT, INDUSTRIAL SERVICES | 16,310 | May 28, 2025 | 0 |
| Banucci Eugene G | Director | 5,598 | Jun 12, 2023 | 0 |
| McDuffie Melkeya | EVP, HUMAN RESOURCES OFFICER | 10,094 | May 26, 2023 | 0 |
| Twohig Michael J | EVP (CHESI) | 28,857 | Mar 29, 2023 | 0 |
| Shields Thomas J | Director | 28,762 | May 26, 2022 | 0 |
| Knapp Jeffrey Herbert | EVP - HR (CHESI) | 2,853 | Dec 6, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 5, 2026 (view filing) | Mar 4 | 1 day | McKim Alan SEXEC CHAIR, CTO. | SSale | −100.0K | $292.65 | −$29.3M | −4.6%2.07M after | |
| Mar 17, 2026 (view filing) | Mar 17 | Same day | Weber Brian PEVP (CHESI) | SSale | −4.68K | $293.39 | −$1.37M | −8.8%48.7K after | |
| Mar 19, 2026 (view filing) | Mar 18 | 1 day | Reed Marcy L.Director | SSale | −836 | $287.94 | −$240.7K | −14.1%5.08K after | |
| May 14, 2026 (view filing) | May 11 | 3 days | Polito KarynDirector | PPurchase | +460 | $295.13 | +$135.8K | +15.3%3.48K after | Amended |
| May 27, 2026 (view filing) | May 26 | 1 day | States LaurenDirector | SSale | −789 | $286.19 | −$225.8K | −6.5%11.4K after | |
| Aug 3, 2026 (view filing)12:04 PM ET | Aug 3 | Same day | Robertson AndreaDirector | SSale | −789 | $314.01 | −$247.8K | −8.1%8.98K after | |
| Aug 14, 2026 (view filing)9:03 AM ET | Feb 20 | 175 days | Dugas Eric J.EVP CHIEF FINANCIAL OFFICER | SSale | −2.79K | $281.31 | −$784.3K | −12.2%20.0K after | Amended |
| Aug 14, 2026 (view filing)9:13 AM ET | Feb 23 | 172 days | Gerstenberg Eric WCO-CEO | SSale | −2.50K | $279.86 | −$699.6K | −3.8%64.0K after | Amended |
| Aug 14, 2026 (view filing)9:20 AM ET | Mar 18 | 149 days | Gerstenberg Eric WCO-CEO | SSale | −1.00K | $293.00 | −$293.0K | −1.6%59.9K after | Amended |
| Aug 18, 2026 (view filing)2:47 PM ET | Aug 14 | 4 days | Gerstenberg Eric WCO-CEO | SSale | −2.50K | $321.34 | −$803.4K | −4.2%56.8K after |