Koppers Highlights Sustainability Achievements Including Notable Greenhouse Gas Reduction

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

Report of unscheduled material events or corporate event

Current Reports
4

Statement of changes in beneficial ownership of securities

3,4,5
8-K

Report of unscheduled material events or corporate event

Current Reports
3

Initial filing by director officer or owner of more than ten percent.

3,4,5
3

Initial filing by director officer or owner of more than ten percent.

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/A

Amendment to a previously filed 4

3,4,5
4

Statement of changes in beneficial ownership of securities

3,4,5