0001950047-24-005738.txt : 20240801 0001950047-24-005738.hdr.sgml : 20240801 20240801162354 ACCESSION NUMBER: 0001950047-24-005738 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240801 DATE AS OF CHANGE: 20240801 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CLEAN HARBORS INC CENTRAL INDEX KEY: 0000822818 STANDARD INDUSTRIAL CLASSIFICATION: HAZARDOUS WASTE MANAGEMENT [4955] ORGANIZATION NAME: 01 Energy & Transportation IRS NUMBER: 042997780 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-34223 FILM NUMBER: 241167105 BUSINESS ADDRESS: STREET 1: 42 LONGWATER DRIVE STREET 2: P.O. BOX 9149 CITY: NORWELL STATE: MA ZIP: 02061-9149 BUSINESS PHONE: 781-792-5000 MAIL ADDRESS: STREET 1: 42 LONGWATER DRIVE CITY: NORWELL STATE: MA ZIP: 02061-9149 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Robertson Andrea CENTRAL INDEX KEY: 0001295248 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 129 SHELTER ROCK ROAD CITY: STAMFORD STATE: CT ZIP: 06903 144 1 primary_doc.xml 144 0001295248 XXXXXXXX LIVE 0000822818 CLEAN HARBORS, INC. 001-34223 42 Longwater Drive Norwell MA 02061-9149 (781) 792-5000 ANDREA ROBERTSON Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

1148 274260.99 53972593 08/01/2024 NYSE Common 05/22/2024 Restricted Stock Issuer N 1148 05/22/2024 Not Applicable Y 08/01/2024 /s/ Andrea Robertson