Koppers Reports Achievements in Safety, Sustainability and Financial Performance

SEC Filings
Filing date Form Description Filing Group View
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.INS - XBRL INSTANCE DOCUMENT
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.INS - XBRL INSTANCE DOCUMENT
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.INS - XBRL INSTANCE DOCUMENT
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.INS - XBRL INSTANCE DOCUMENT
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.PRE - XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
10-K

Annual report which provides a comprehensive overview of the company for the past year

Annual Filings
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-K/A

Amendment to a previously filed 10-K

Annual Filings
EX-101.INS - XBRL INSTANCE DOCUMENT