Koppers Reports Achievements in Safety, Sustainability and Financial Performance

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

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.LAB - XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K/A

Amendment to a previously filed 8-K

Current Reports
8-K/A

Amendment to a previously filed 8-K

Current Reports
8-K/A

Amendment to a previously filed 8-K

Current Reports
8-K/A

Amendment to a previously filed 8-K

Current Reports