45 results
10-Q
2023 Q3
EX-3.1
KOP
Koppers Holdings Inc
Quarterly report
3 Nov 23
12:25pm
8-K
EX-3.1
KOP
Koppers Holdings Inc
3 Aug 23
Amendments to Articles of Incorporation or Bylaws
4:34pm
8-K
EX-3.2
KOP
Koppers Holdings Inc
3 Aug 23
Amendments to Articles of Incorporation or Bylaws
4:34pm
10-Q
2017 Q2
EX-3.2
KOP
Koppers Holdings Inc
Quarterly report
3 Aug 17
12:00am
10-Q
2015 Q2
EX-3.1
KOP
Koppers Holdings Inc
Quarterly report
6 Aug 15
12:00am
S-4
EX-3.16
xei9wf2
26 Feb 10
Registration of securities issued in business combination transactions
12:00am
S-4
EX-3.15
4y8w6
26 Feb 10
Registration of securities issued in business combination transactions
12:00am