516 filings
Page 4 of 26
DEFA14A
7eh 04ue81v7fk
28 Apr 21
Additional proxy soliciting materials
3:33pm
8-K
of4epohrzsn1
6 Apr 21
Amendments to Articles of Incorporation or Bylaws
3:39pm
8-K
vis4bef4l59ml
24 Feb 21
Clean Harbors Announces Fourth-Quarter and Full-Year 2020 Financial Results
8:38am
8-K
yw1s gjja2rzc96pb9
4 Nov 20
Clean Harbors Announces Third-Quarter 2020 Financial Results
8:01am
8-K
5zr3u7j8zy8i48a
30 Oct 20
Entry into a Material Definitive Agreement
3:58pm
8-K
h9ah144d
5 Aug 20
Clean Harbors Announces Second-Quarter 2020 Financial Results
7:41am
S-8
78duf27h9lhzu6
3 Jun 20
Registration of securities for employees
2:21pm
8-K
22q6xwkducl7n4jg4c2t
3 Jun 20
Departure of Directors or Certain Officers
12:59pm
8-K
5pp50pc 0lwuqf6
29 Apr 20
Clean Harbors Announces First-Quarter 2020 Financial Results
8:47am
DEFA14A
ihnwqg791xxe m7969
24 Apr 20
Additional proxy soliciting materials
5:22pm
8-K
5jznqu kvz1y1
26 Feb 20
Results of Operations and Financial Condition
8:44am
8-K
2zp7a3uq8 5b57ce0uc
17 Dec 19
Clean Harbors Appoints Robert Willett to Board of Directors
2:34pm