Koppers Holdings Inc. — ARS Filings
13 ARS filings on record
This page lists all ARS filings submitted to the SEC by Koppers Holdings Inc. (KOP), sorted by most recent first. Each row links to the full filing on EdgarLookup. Koppers Holdings Inc. has filed 13 ARS documents with the SEC since 2015. To view all SEC filings by Koppers Holdings Inc., see the full filings list.
All
10-K
10-K/A
10-Q
144
144/A
3
3/A
4
4/A
424B1
424B3
5
5/A
8-A12B
8-K
8-K/A
ARS
CERTNYS
CORRESP
DEF 14A
DEFA14A
EFFECT
POS AM
POSASR
PRE 14A
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| ARS | ARS | 0001315257-26-000027 | Mar 27, 2026 | Dec 31, 2025 |
| ARS | ARS | 0000950170-25-046848 | Mar 28, 2025 | Dec 31, 2024 |
| ARS | ARS | 0000950170-24-040253 | Apr 2, 2024 | Dec 31, 2023 |
| ARS | ARS | 0000950170-23-011615 | Apr 3, 2023 | Dec 31, 2022 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-15-008646 | Apr 7, 2015 | Dec 31, 2014 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-14-006191 | Mar 28, 2014 | Dec 31, 2013 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-13-007650 | Mar 28, 2013 | Dec 31, 2012 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-12-007582 | Mar 29, 2012 | Dec 31, 2011 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-11-007032 | Mar 31, 2011 | Dec 31, 2010 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-10-008705 | Apr 1, 2010 | Dec 31, 2009 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-09-016714 | Apr 2, 2009 | Dec 31, 2008 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-08-019411 | Apr 7, 2008 | Dec 31, 2007 |
| ARS | AUTO-GENERATED PAPER DOCUMENT | 9999999997-07-016247 | Apr 2, 2007 | Dec 31, 2006 |