Koppers Highlights Sustainability Achievements Including Notable Greenhouse Gas Reduction

SEC Filings
Filing date Form Description Filing Group View
4

Statement of changes in beneficial ownership of securities

3,4,5
4

Statement of changes in beneficial ownership of securities

3,4,5
4

Statement of changes in beneficial ownership of securities

3,4,5
4

Statement of changes in beneficial ownership of securities

3,4,5
4

Statement of changes in beneficial ownership of securities

3,4,5
8-K

Report of unscheduled material events or corporate event

Current Reports
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
10-Q

Quarterly report which provides a continuing view of a company's financial position

Quarterly Filings
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
8-K/A

Amendment to a previously filed 8-K

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
4

Statement of changes in beneficial ownership of securities

3,4,5