CLEAN HARBORS INC (CLH) Institutional Ownership and Insiders Activity

CLEAN HARBORS INC (CLH) is widely held by institutional investors, with 4 tracked firms reporting positions valued at approximately $805.99M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Lone Pine Capital is the largest disclosed holder, reporting approximately $503.20M in CLH holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Lone Pine Capital representing the majority of disclosed value.

Recent insider activity includes 20 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.