0001950047-23-000957.txt : 20230525 0001950047-23-000957.hdr.sgml : 20230525 20230525160622 ACCESSION NUMBER: 0001950047-23-000957 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230525 DATE AS OF CHANGE: 20230525 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: 23960458 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: Weber Brian P CENTRAL INDEX KEY: 0001322710 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 88 PINE STREET CITY: WALPOLE STATE: MA ZIP: 02081 144 1 primary_doc.xml 144 0001322710 XXXXXXXX LIVE 0000822818 CLEAN HARBORS, INC. 001-34223 42 Longwater Drive Norwell MA 02061 (781) 792-5000 BRIAN WEBER Officer Common Morgan Stanley Smith Barney LLC

1 New York Plaza 38th Floor New York NY 10004

3131 446576.10 54104121 05/25/2023 NYSE Common 03/15/2022 Restricted Stock Issuer N 209 03/15/2022 None Common 03/15/2023 Restricted Stock Issuer N 660 03/15/2023 None Common 11/01/2022 Restricted Stock Issuer N 927 11/01/2022 None Common 12/15/2019 Restricted Stock Issuer N 1335 12/15/2019 None N BRIAN WEBER

42 Longwater Drive Norwell MA 02061

COMMON 03/15/2023 527 70127.00 05/25/2023 /s/ Brian Paul Weber