CLH (Clean Harbors, Inc)
Insider Trading Activity
Every open-market purchase and sale reported by CLH officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | ERIC W GERSTENBERG | CO-CEO | Sell | — | — |
| 2026-08-14 | ERIC W GERSTENBERG | CO-CEO | F | — | — |
| 2026-08-14 | ERIC W GERSTENBERG | CO-CEO | Sell | — | — |
| 2026-08-14 | Eric J. Dugas | EVP CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-08-14 | ERIC W GERSTENBERG | CO-CEO | Sell | — | — |
| 2026-08-14 | ERIC W GERSTENBERG | CO-CEO | MIXED | — | — |
| 2026-08-14 | Eric J. Dugas | EVP CHIEF FINANCIAL OFFICER | MIXED | — | — |
| 2026-08-14 | Eric J. Dugas | EVP CHIEF FINANCIAL OFFICER | F | — | — |
| 2026-08-12 | Michael Louis Battles | CO-CEO | F | — | — |
| 2026-08-11 | GEORGE L CURTIS | EXEC. VICE PRESIDENT (CHESI) | F | — | — |
| 2026-08-03 | Andrea Robertson | Director | Sell | — | — |
| 2026-07-20 | ALAN S MCKIM | EXEC CHAIR, CTO. | F | — | — |
| 2026-07-06 | Rebecca Underwood | PRESIDENT & EVP FACILITIES | F | — | — |
| 2026-07-06 | Eric J. Dugas | EVP CHIEF FINANCIAL OFFICER | F | — | — |
| 2026-07-06 | Brian P Weber | EVP (CHESI) | F | — | — |
| 2026-07-06 | Charles H. Geer II | EVP, Industrial Services | F | — | — |
| 2026-07-06 | Sharon M. Gabriel | EVP/CIO (CHESI) | F | — | — |
| 2026-07-06 | ALAN S MCKIM | EXEC CHAIR, CTO. | F | — | — |
| 2026-07-06 | ERIC W GERSTENBERG | CO-CEO | F | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | EXEC CHAIR, CTO. | 130,154 | — |
| — | CO-CEO | 94,355 | — |
| — | CO-CEO | 56,793 | — |
| — | EVP (CHESI) | 47,914 | — |
| — | EXEC. VICE PRESIDENT (CHESI) | 44,291 | — |
| — | EVP/CIO (CHESI) | 20,706 | — |
| — | PRESIDENT & EVP FACILITIES | 18,373 | — |
| — | EVP CHIEF FINANCIAL OFFICER | 17,620 | — |
| — | EVP, Industrial Services | 10,799 | — |
| — | Director | 8,979 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the CLH quote page; the site-wide leaderboard is on the insider transactions hub.