SEC Form 4 · Updated Daily
CLH
— CLEAN HARBORS, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Battles Michael Louis | Director | 94,355 | 2026-07-01 | F |
| GERSTENBERG ERIC W | Officer | 56,793 | 2026-08-14 | S |
| Weber Brian P | Officer | 47,914 | 2026-07-01 | F |
| CURTIS GEORGE L | Officer | 44,291 | 2026-07-01 | F |
| MCKIM ALAN S | Director · Officer | 30,154 | 2026-07-17 | F |
| GALANTE EDWARD G | Director | 25,461 | 2026-05-20 | A |
| Gabriel Sharon M. | Officer | 20,706 | 2026-07-01 | F |
| Underwood Rebecca | Officer | 18,373 | 2026-07-01 | F |
| Diderich Jeroen | Officer | 16,152 | 2026-06-01 | F |
| Dugas Eric J. | Officer | 13,532 | 2026-07-01 | F |
| States Lauren | Director | 11,359 | 2026-05-26 | S |
| Welch John R. | Director | 10,889 | 2026-05-20 | A |
| Geer Charles H. II | Officer | 10,799 | 2026-07-01 | F |
| Willett Robert | Director | 10,028 | 2026-05-20 | A |
| Robertson Andrea | Director | 8,979 | 2026-08-03 | S |
| PRESTON JOHN T | Director | 7,044 | 2026-05-20 | A |
| Reed Marcy L. | Director | 5,733 | 2026-05-20 | A |
| Stewart Shelley JR | Director | 4,523 | 2026-05-20 | A |
| Polito Karyn | Director | 4,127 | 2026-05-20 | A |
| Quirk Alison A. | Director | 3,630 | 2026-05-20 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-08-14 | GERSTENBERG ERIC W | Open-market sale | 2,500 | $321.34 | 56,793 |
| 2026-08-03 | Robertson Andrea | Open-market sale | 789 | $314.01 | 8,979 |
| 2026-07-17 | MCKIM ALAN S | Tax withholding | 1,265 | $310.58 | 30,154 |
| 2026-07-01 | Dugas Eric J. | Tax withholding | 447 | $290.74 | 13,532 |
| 2026-07-01 | Geer Charles H. II | Tax withholding | 40 | $290.74 | 10,799 |
| 2026-07-01 | GERSTENBERG ERIC W | Tax withholding | 564 | $290.74 | 38,313 |
| 2026-07-01 | MCKIM ALAN S | Tax withholding | 1,343 | $290.74 | 31,419 |
| 2026-07-01 | Underwood Rebecca | Tax withholding | 311 | $290.74 | 18,373 |
| 2026-07-01 | Weber Brian P | Tax withholding | 814 | $290.74 | 47,914 |
| 2026-07-01 | Gabriel Sharon M. | Tax withholding | 359 | $290.74 | 20,706 |
| 2026-07-01 | CURTIS GEORGE L | Tax withholding | 1,757 | $290.74 | 44,291 |
| 2026-07-01 | Battles Michael Louis | Tax withholding | 1,032 | $290.74 | 94,355 |
| 2026-07-01 | Dugas Eric J. | Tax withholding | 447 | $290.74 | 17,620 |
| 2026-07-01 | GERSTENBERG ERIC W | Tax withholding | 564 | $290.74 | 59,293 |
| 2026-06-01 | Diderich Jeroen | Tax withholding | 1,717 | $281.00 | 16,152 |
| 2026-05-26 | States Lauren | Open-market sale | 789 | $286.19 | 11,359 |
| 2026-05-20 | Polito Karyn | Grant / award | 652 | $0.00 | 4,127 |
| 2026-05-20 | GALANTE EDWARD G | Grant / award | 652 | $0.00 | 25,461 |
| 2026-05-20 | PRESTON JOHN T | Grant / award | 652 | $0.00 | 7,044 |
| 2026-05-20 | Quirk Alison A. | Grant / award | 652 | $0.00 | 3,630 |
| 2026-05-20 | Reed Marcy L. | Grant / award | 652 | $0.00 | 5,733 |
| 2026-05-20 | Robertson Andrea | Grant / award | 652 | $0.00 | 9,768 |
| 2026-05-20 | States Lauren | Grant / award | 652 | $0.00 | 12,148 |
| 2026-05-20 | Stewart Shelley JR | Grant / award | 652 | $0.00 | 4,523 |
| 2026-05-20 | Welch John R. | Grant / award | 652 | $0.00 | 10,889 |
| 2026-05-20 | Willett Robert | Grant / award | 652 | $0.00 | 10,028 |
| 2026-05-11 | Robertson Andrea | Gift | 342 | $0.00 | 9,116 |
| 2026-05-11 | Polito Karyn | Grant / award | 460 | $295.13 | 3,475 |
| 2026-05-11 | Polito Karyn | Open-market buy | 460 | $295.13 | 3,475 |
| 2026-03-18 | Reed Marcy L. | Open-market sale | 836 | $287.94 | 5,081 |
| 2026-03-18 | GERSTENBERG ERIC W | Open-market sale | 1,000 | $293.00 | 38,877 |
| 2026-03-18 | GERSTENBERG ERIC W | Open-market sale | 1,000 | $293.00 | 59,857 |
| 2026-03-17 | Weber Brian P | Open-market sale | 4,683 | $293.39 | 48,728 |
| 2026-03-13 | GERSTENBERG ERIC W | Disposition to issuer | 2,166 | $0.00 | 39,877 |
| 2026-03-13 | GERSTENBERG ERIC W | Tax withholding | 977 | $288.93 | 42,043 |
| 2026-03-13 | Gabriel Sharon M. | Disposition to issuer | 1,401 | $0.00 | 21,065 |
| 2026-03-13 | Gabriel Sharon M. | Tax withholding | 727 | $288.93 | 22,466 |
| 2026-03-13 | Underwood Rebecca | Disposition to issuer | 1,401 | $0.00 | 18,684 |
| 2026-03-13 | Underwood Rebecca | Tax withholding | 125 | $288.93 | 20,085 |
| 2026-03-13 | Weber Brian P | Disposition to issuer | 1,869 | $0.00 | 53,411 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.