Clean Harbors Inc.

CLH·NYSE·$286.67Share Price as of 11/2·$15BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/28/26 10-QQ2 ended 06/30/2607/29/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202502/18/26 10-QQ3 ended 09/30/2510/29/25

Disclosures

8-KCurrent report10/28/26 8-KCurrent report10/05/26 8-KCurrent report09/18/26 8-KCurrent report08/12/26 8-KCurrent report07/29/26

Prospectuses and Registrations

S-8Registration of securities for employees05/23/24 S-8Registration of securities for employees06/03/20

Proxies

DEF 14ADefinitive proxy04/10/26 DEFA14AAdditional proxy materials04/10/26 DEF 14ADefinitive proxy04/11/25 DEFA14AAdditional proxy materials04/11/25 DEF 14ADefinitive proxy04/10/24

Ownership

Form 4Insider transaction08/18/26 144Proposed sale of securities08/14/26 4/AInsider transaction (amended)08/14/26 4/AInsider transaction (amended)08/14/26 4/AInsider transaction (amended)08/14/26

Other

ARSAnnual report to shareholders04/10/26 ARSAnnual report to shareholders04/16/25 ARSAnnual report to shareholders04/15/24 ARSAnnual report to shareholders04/13/23