20 results
10-K
2023 FY
EX-21
KOP
Koppers Holdings Inc
Annual report
28 Feb 24
12:09pm
10-K
2022 FY
EX-21
KOP
Koppers Holdings Inc
Annual report
27 Feb 23
12:07pm
10-K
2021 FY
EX-21
KOP
Koppers Holdings Inc
Annual report
23 Feb 22
8:05am
10-K
2020 FY
EX-21
KOP
Koppers Holdings Inc
Annual report
24 Feb 21
2:08pm
10-K
2019 FY
EX-21
KOP
Koppers Holdings Inc
Annual report
27 Feb 20
6:03am
S-4
EX-21.1
zsp btrutaijf2kr
26 Feb 10
Registration of securities issued in business combination transactions
12:00am
S-4/A
EX-21
ragul zavtjcrhkgt7
18 Apr 05
Registration of securities issued in business combination transactions (amended)
12:00am
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