Clean Harbors, Inc.
Clean Harbors, Inc. (CLH) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · CLH · as of Jun 8, 2026
Activity summary
Buy transactions
2
P-Purchase only
Sell transactions
12
12 Months
Buy/Sell ratio
0.17
Buy/Sell (by trades)
Overall sentiment
Clean Harbors, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
CLH insider buying and selling by quarter
CLH insider selling · CLH insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · CLH ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
CLH executive sell shares · CLH board member insider trading · CLH insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 26, 2026 | States Lauren Director | Sale | 789 | $226K | Form 4 |
| May 20, 2026 | Willett Robert Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Welch John R. Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Stewart Shelley JR Director | Award | 652 | — | Form 4 |
| May 20, 2026 | States Lauren Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Robertson Andrea Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Reed Marcy L. Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Quirk Alison A. Director | Award | 652 | — | Form 4 |
| May 20, 2026 | PRESTON JOHN T Director | Award | 652 | — | Form 4 |
| May 20, 2026 | GALANTE EDWARD G Director | Award | 652 | — | Form 4 |
| May 20, 2026 | Polito Karyn Director | Award | 652 | — | Form 4 |
| May 11, 2026 | Polito Karyn Director | Award | 460 | $136K | Form 4 |
| May 11, 2026 | Robertson Andrea Director | Gift | 342 | — | Form 4 |
| Mar 18, 2026 | GERSTENBERG ERIC W CO-CEO | Sale | 1,000 | $293K | Form 4 |
| Mar 18, 2026 | Reed Marcy L. Director | Sale | 836 | $241K | Form 4 |
| Mar 13, 2026 | Weber Brian P EVP (CHESI) | Other | 960 | $277K | Form 4 |
| Mar 13, 2026 | Weber Brian P EVP (CHESI) | Other | 1,869 | — | Form 4 |
| Mar 17, 2026 | Weber Brian P EVP (CHESI) | Sale | 4,683 | $1.37M⚡ | Form 4 |
| Mar 13, 2026 | Underwood Rebecca PRESIDENT & EVP FACILITIES | Other | 125 | $36K | Form 4 |
| Mar 13, 2026 | Underwood Rebecca PRESIDENT & EVP FACILITIES | Other | 1,401 | — | Form 4 |
| Mar 13, 2026 | Gabriel Sharon M. EVP/CIO (CHESI) | Other | 727 | $210K | Form 4 |
| Mar 13, 2026 | Gabriel Sharon M. EVP/CIO (CHESI) | Other | 1,401 | — | Form 4 |
| Mar 13, 2026 | GERSTENBERG ERIC W CO-CEO | Other | 977 | $282K | Form 4 |
| Mar 13, 2026 | GERSTENBERG ERIC W CO-CEO | Other | 2,166 | — | Form 4 |
| Mar 13, 2026 | Harrison Robert W. EVP, EHS | Other | 18 | $5K | Form 4 |
Underwood Rebecca
PRESIDENT & EVP FACILITIES
Date
Mar 13
Shares
125
Price
$288.93
Value
$36K
Underwood Rebecca
PRESIDENT & EVP FACILITIES
Date
Mar 13
Shares
1,401
Price
—
Value
—
Gabriel Sharon M.
EVP/CIO (CHESI)
Date
Mar 13
Shares
727
Price
$288.93
Value
$210K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About CLH insider trading
CLH insider trades
Clean Harbors, Inc. (CLH) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including GERSTENBERG ERIC W (CO-CEO), Weber Brian P (EVP (CHESI)), Gabriel Sharon M. (EVP/CIO (CHESI)). Over the past 12 months, 5 insiders have filed transactions with the SEC. CLH insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Clean Harbors, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
CLH insider trading · 5 questionsThe insiders of Clean Harbors, Inc. (CLH) include executives and directors such as GERSTENBERG ERIC W (CO-CEO), Weber Brian P (EVP (CHESI)), Gabriel Sharon M. (EVP/CIO (CHESI)), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026