Clean Harbors — Oct 29, 2025 release

We remain on track to deliver a record level of annual Adjusted EBITDA and adjusted free cash flow in 2025 with a healthy long-term market outlook.” For full-year 2025, Clean Harbors is revising its prior guidance and now expects: • Adjusted EBITDA in the range of $1.155 billion to $1.175 billion, or a midpoint of $1.165 billion, which represents 4% growth year over year. This Adjusted EBITDA range is based on anticipated GAAP net income in the range of $379 million to $400 million. • Adjusted free cash flow in the range of $455 million to $495 million, or a midpoint of $475 million, which represents more than a 30% increase from prior year. This range is based on anticipated net cash from operating activities in the range of $795 million to $865 million. Non-GAAP Results Clean Harbors reports Adjusted EBITDA, which is a non-GAAP financial measure and should not be considered an alternative to net income or other measurements under generally accepted accounting principles (GAAP) but viewed only as a supplement to those measurements. Adjusted EBITDA is not calculated identically by all companies, and therefore the Company’s measurement of Adjusted EBITDA may not be comparable to similarly titled measures reported by other companies. Clean Harbors believes that Adjusted EBITDA provides additional useful information to investors because the Company’s management routinely evaluates the performance of its businesses based upon levels of Adjusted EBITDA. The Company defines Clean Harbors • 42 Longwater Drive • PO Box 9149 • Norwell, Massachusetts 02061-9149 • 800.282.0058 • www.cleanharbors.com Adjusted EBITDA as described in the following reconciliation showing t