CLEAN HARBORS INC (CLH) Institutional Ownership and Insiders Activity

CLEAN HARBORS INC (CLH) is widely held by institutional investors, with 640 firms reporting positions valued at approximately $14.97B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $1.52B in CLH holdings in its latest filing.

Recent insider activity includes 11 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.