CLEAN HARBORS (CLH) stock: insider trades, news & valuation
Net sellingShare price and insider trades
CLEAN HARBORS insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $136K and 9 sold $65.2M of CLH stock on the open market.
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CLH insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $1.1M | 2 |
| Q2 2026 | $136K | 1 | $226K | 1 |
| Q1 2026 | — | 0 | $63.8M | 12 |
| Q4 2025 | — | 0 | $145K | 1 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 CLEAN HARBORS INC insider reported open-market purchases totaling $136K, while 9 insiders reported sales totaling $65.2M. 0 of 16 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 18SEC | Eric W GerstenbergCEO | Sell | 2,50056,793 held (−4%) | $321.34 | $803K | -1.4% | — |
| Aug 14SEC | Eric J. DugasCFO | Sell | 2,78820,021 held (−12%) | $281.31 | $784K | +12.7% | — |
| Aug 14SEC | Eric W GerstenbergCEO | Sell | 2,50064,000 held (−4%) | $279.86 | $700K | +13.2% | — |
| Aug 14SEC | Eric W GerstenbergCEO | Sell | 1,00059,857 held (−2%) | $293.00 | $293K | +8.2% | — |
| Aug 3SEC | Andrea RobertsonDirector | Sell | 7898,979 held (−8%) | $314.01 | $248K | +0.9% | — |
| May 27SEC | Lauren StatesDirector | Sell | 78911,359 held (−6%) | $286.19 | $226K | +10.7% | — |
| May 14SEC | Karyn PolitoDirector | Buy | 4603,475 held (+15%) | $295.13 | $136K | +7.4% | — |
| Mar 19SEC | Eric W GerstenbergCEO | Sell | 1,00038,877 held (−3%) | $293.00 | $293K | +8.2% | — |
| Mar 19SEC | Marcy L. ReedDirector | Sell | 8365,081 held (−14%) | $287.94 | $241K | +10.1% | — |
| Mar 17SEC | Brian P WeberEvp (Chesi) | Sell | 4,68348,728 held (−9%) | $293.39 | $1.4M | +8.0% | — |
| Mar 5SEC | Alan S MckimCTO, Chair | Sell | 100,0002,065,368 held (−5%) | $292.65 | $29.3M | +8.3% | — |
| Feb 24SEC | Eric W GerstenbergCEO | Sell | 2,50043,020 held (−5%) | $279.86 | $700K | +13.2% | — |
| Feb 23SEC | Alan S MckimCTO, Chair | Sell | 100,0002,275,368 held (−4%) | $281.14 | $28.1M | +12.7% | — |
| Feb 20SEC | Sharon M. GabrielEvp/Cio (Chesi) | Sell | 3,54023,193 held (−13%) | $282.07 | $999K | +12.4% | — |
| Feb 20SEC | Eric J. DugasCFO | Sell | 2,78815,933 held (−15%) | $281.31 | $784K | +12.7% | — |
| Feb 20SEC | John R. WelchDirector | Sell | 75010,237 held (−7%) | $273.07 | $205K | +16.1% | — |
| Dec 17SEC | Eric W GerstenbergCEO | Sell | 60150,454 held (−1%) | $240.90 | $145K | +31.6% | — |
Insiders at CLEAN HARBORS INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Alan S MckimCTO, Chair | — | $57.4M | Mar 5, 2026 | — |
| Eric W GerstenbergCEO | — | $2.9M | Aug 18, 2026 | — |
| Eric J. DugasCFO | — | $1.6M | Aug 14, 2026 | — |
| Brian P WeberEvp (Chesi) | — | $1.4M | Mar 17, 2026 | — |
| Sharon M. GabrielEvp/Cio (Chesi) | — | $999K | Feb 20, 2026 | — |
| Karyn PolitoDirector | $136K | — | May 14, 2026 | — |
| Andrea RobertsonDirector | — | $248K | Aug 3, 2026 | — |
| Marcy L. ReedDirector | — | $241K | Mar 19, 2026 | — |
| Lauren StatesDirector | — | $226K | May 27, 2026 | — |
| John R. WelchDirector | — | $205K | Feb 20, 2026 | — |
CLH stock: common questions
Are CLEAN HARBORS INC insiders buying CLH stock?
In the past 12 months, 1 insiders reported open-market purchases of CLH worth $136K. The latest was Director Karyn Polito bought $136K of CLH at $295.13 — first open-market purchase in our records.
Are CLEAN HARBORS INC insiders selling CLH stock?
9 insiders reported sales worth $65.2M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is CLH's 52-week range?
Over the past year CLH has traded between $201.73 and $326.34. It last closed at $316.93 on Oct 9, 2026.