0001950047-23-003517.txt : 20230829 0001950047-23-003517.hdr.sgml : 20230829 20230829170447 ACCESSION NUMBER: 0001950047-23-003517 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230829 DATE AS OF CHANGE: 20230829 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CLEAN HARBORS INC CENTRAL INDEX KEY: 0000822818 STANDARD INDUSTRIAL CLASSIFICATION: HAZARDOUS WASTE MANAGEMENT [4955] 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: 231222859 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: Dugas Eric J. CENTRAL INDEX KEY: 0001663307 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O CLEAN HARBORS, INC. STREET 2: 42 LONGWATER DRIVE CITY: NORWELL STATE: MA ZIP: 02061 144 1 primary_doc.xml 144 0001663307 XXXXXXXX LIVE 0000822818 CLEAN HARBORS, INC. 001-34223 42 Longwater Drive Norwell MA 02061 (781) 792-5000 ERIC J. DUGAS Officer Common Morgan Stanley Smith Barney LLC

1 New York Plaza 38th Floor New York NY 10004

3500 598500.00 54150830 08/29/2023 NYSE Common 02/01/2022 Restricted Stock Issuer N 984 02/01/2022 Not Applicable Common 03/15/2022 Restricted Stock Issuer N 105 03/15/2022 Not Applicable Common 04/01/2022 Restricted Stock Issuer N 588 04/01/2022 Not Applicable Common 07/01/2022 Restricted Stock Issuer N 947 07/01/2022 Not Applicable Common 12/15/2021 Restricted Stock Issuer N 876 12/15/2021 Not Applicable N ERIC J. DUGAS

42 Longwater Drive Norwell MA 02061

COMMON 07/03/2023 898 147658.00 08/29/2023 /s/ Eric James Dugas