Clean Harbors — Jul 30, 2025 release

For full-year 2025, Clean Harbors is reiterating the midpoints of its prior guidance and expects: Clean Harbors • 42 Longwater Drive • PO Box 9149 • Norwell, Massachusetts 02061-9149 • 800.282.0058 • www.cleanharbors.com • Adjusted EBITDA in the range of $1.16 billion to $1.20 billion, or a midpoint of $1.18 billion, which represents 6% growth year over year. This Adjusted EBITDA range is based on anticipated GAAP net income in the range of $383 million to $419 million. • Adjusted free cash flow in the range of $430 million to $490 million, or a midpoint of $460 million, which represents a nearly 30% increase from prior year. This range is based on anticipated net cash from operating activities in the range of $775 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 Adjusted