22 insiders reported 186 Form 4 transactions for CLEAN HARBORS INC (CLH) over the past 18 months (most recent 2026-08-18). Recent activity: GERSTENBERG ERIC W (CO-CEO) Sell 2,500 shares, GERSTENBERG ERIC W (CO-CEO) Sell 2,500 shares, GERSTENBERG ERIC W (CO-CEO) Sell 977 shares, GERSTENBERG ERIC W (CO-CEO) Sell 1,000 shares, GERSTENBERG ERIC W (CO-CEO) Sell 564 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | GERSTENBERG ERIC W | CO-CEO | Sell | 2,500 | $803,350 |
| 2026-08-14 | GERSTENBERG ERIC W | CO-CEO | Sell | 2,500 | $699,650 |
| 2026-08-14 | GERSTENBERG ERIC W | CO-CEO | Sell | 977 | $282,285 |
| 2026-08-14 | GERSTENBERG ERIC W | CO-CEO | Sell | 1,000 | $293,000 |
| 2026-08-14 | GERSTENBERG ERIC W | CO-CEO | Sell | 564 | $163,977 |
| 2026-08-14 | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | Sell | 2,788 | $784,292 |
| 2026-08-14 | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | Sell | 630 | $182,026 |
| 2026-08-14 | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | Sell | 447 | $129,961 |
| 2026-08-14 | GERSTENBERG ERIC W | CO-CEO | Sell | 2,166 | $0 |
| 2026-08-14 | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | Sell | 1,324 | $0 |
| 2026-08-12 | Battles Michael Louis | CO-CEO | Sell | 1,032 | $300,044 |
| 2026-08-11 | CURTIS GEORGE L | EXEC. VICE PRESIDENT (CHESI) | Sell | 1,757 | $510,830 |
| 2026-08-03 | Robertson Andrea | Director | Sell | 789 | $247,754 |
| 2026-07-20 | MCKIM ALAN S | EXEC CHAIR, CTO. | Sell | 1,265 | $392,884 |
| 2026-07-06 | MCKIM ALAN S | EXEC CHAIR, CTO. | Sell | 1,343 | $390,464 |
| 2026-07-06 | GERSTENBERG ERIC W | CO-CEO | Sell | 564 | $163,977 |
| 2026-07-06 | Weber Brian P | EVP (CHESI) | Sell | 814 | $236,662 |
| 2026-07-06 | Dugas Eric J. | EVP CHIEF FINANCIAL OFFICER | Sell | 447 | $129,961 |
| 2026-07-06 | Gabriel Sharon M. | EVP/CIO (CHESI) | Sell | 359 | $104,376 |
| 2026-07-06 | Underwood Rebecca | PRESIDENT & EVP FACILITIES | Sell | 311 | $90,420 |
| 2026-07-06 | Geer Charles H. II | EVP, Industrial Services | Sell | 40 | $11,630 |
| 2026-06-03 | Diderich Jeroen | EVP&President of Sales&Service | Sell | 1,717 | $482,477 |
| 2026-05-27 | States Lauren | Director | Sell | 789 | $225,804 |
| 2026-05-22 | Robertson Andrea | Director | Buy | 652 | $0 |
| 2026-05-22 | GALANTE EDWARD G | Director | Buy | 652 | $0 |
Source: SEC Form 4 filings · as of 2026-08-18