Welcome to our dedicated page for Clean Harbors SEC filings (Ticker: CLH), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Clean Harbors, Inc. (NYSE: CLH) SEC filings page on Stock Titan provides direct access to the company’s regulatory disclosures, along with AI-assisted summaries to help interpret key points. Clean Harbors is a Massachusetts corporation and a self-described leading provider of environmental and industrial services, with operations in the United States, Canada, Mexico, Puerto Rico and India. Its filings with the U.S. Securities and Exchange Commission offer detailed insight into the business, capital structure and risk profile.
Investors can use this page to review annual reports on Form 10-K and quarterly reports on Form 10-Q, which describe segment performance for Environmental Services and Safety-Kleen businesses, including Safety-Kleen Sustainability Solutions. These reports also discuss hazardous waste management, industrial services, used oil re-refining, PFAS-related activities and the wide range of risks the company identifies, from operational and safety issues to regulatory and financial considerations.
Current reports on Form 8-K document material events such as quarterly earnings announcements, senior notes offerings, amendments to credit agreements and other significant developments. For example, Clean Harbors has filed 8-Ks describing the issuance of 5.750% senior notes due 2033, amendments to its term loan credit facility and the release of financial results for specific quarters.
Through this page, users can also track debt and capital structure disclosures, including indentures and credit agreements referenced in exhibits to 8-K filings. Stock Titan’s AI tools summarize complex legal and financial language, highlighting items such as covenant packages, maturity profiles and redemption features, so readers can quickly understand how new financings affect Clean Harbors’ obligations.
In addition, this resource can surface insider transaction filings (Form 4) when available, giving a view into equity transactions by directors and officers. Combined with real-time updates from EDGAR and AI-generated explanations, the Clean Harbors filings page is designed to make the company’s regulatory record more accessible to investors, analysts and anyone researching CLH.
Clean Harbors Inc. ownership filing: The Vanguard Group amended its Schedule 13G/A to report 0 shares beneficially owned, representing 0% of the common stock, following an internal realignment dated January 12, 2026. The amendment states certain Vanguard subsidiaries will report holdings separately in reliance on SEC Release No. 34-39538.
Clean Harbors CO-CEO Eric W. Gerstenberg reported an open-market sale of 1,000 shares of Common Stock at $293 per share. After this transaction, he directly owns 38,877 shares. The sale represents a relatively small portion of his reported holdings and appears routine in scale.
Clean Harbors Inc. director Marcy L. Reed reported an open-market sale of 836 shares of Common Stock on March 18, 2026 at an average price of $287.94 per share. After this transaction, Reed directly holds 5,081 shares of Clean Harbors common stock.
CLH reports proposed sales of Common Stock by holders and an issuer equity‑comp transaction. The filing lists sales by Eric Gerstenberg of $699,650.00 for 2,500 shares on 02/23/2026 and $144,781.00 for 601 shares on 12/16/2025. The excerpt also shows a 1,000-share equity compensation entry dated 02/01/2026.
CLH reported a proposed sale under Form 144 of restricted common stock to be handled through Morgan Stanley Smith Barney LLC. The filing lists multiple restricted-share lots with example amounts, including 1,022 shares dated 03/15/2026 and 1,430 shares dated 02/01/2026.
The broker is shown as Morgan Stanley Smith Barney LLC and the filing references NYSE with an entry dated 03/17/2026. The excerpt lists additional restricted-share lots (1,129; 79; 1,023) with their grant dates. This notice reports proposed insider sales; timing and total aggregate amount are not stated in the provided excerpt.
Clean Harbors EVP Brian P. Weber reported several stock transactions. On March 17, 2026, he executed an open-market sale of 4,683 shares of Common Stock at $293.39 per share and held 48,728 shares directly afterward.
On March 13, 2026, 960 shares were disposed of to cover tax liabilities at $288.93 per share, and 1,869 shares were forfeited back to the company because performance targets under its Long Term Equity Incentive Program were not achieved. These March 13 events were non-market dispositions related to compensation and plan performance.
Clean Harbors executive Rebecca Underwood, President & EVP Facilities, reported two non-market dispositions of common stock tied to equity compensation mechanics.
The filing shows 125 shares withheld to cover tax liabilities upon vesting of stock, and 1,401 restricted shares forfeited because the company did not meet performance targets under its long-term equity incentive program. After these entries, she directly holds 18,684 shares of Clean Harbors common stock.
CLEAN HARBORS INC EVP/CIO (CHESI) Gabriel M. Sharon reported routine non-market share dispositions related to equity compensation. On March 13, 2026, 727 shares of common stock were withheld at $288.93 per share to cover tax liabilities upon vesting, as permitted under Rule 16b-3.
On the same date, an additional 1,401 shares of restricted stock were forfeited back to the company at $0.00 because the company did not achieve performance targets under its Long Term Equity Incentive Program. After these actions, Sharon directly holds 21,065 shares of CLEAN HARBORS common stock.
CLEAN HARBORS INC co-CEO Eric W. Gerstenberg reported routine compensation-related share dispositions. On March 13, 2026, 977 shares of common stock were withheld to cover tax liabilities upon vesting. On the same date, 2,166 shares of restricted stock were forfeited because the company did not achieve performance targets under its Long Term Equity Incentive Program. After these transactions, Gerstenberg directly owned 39,877 shares of common stock.