Koppers Highlights Sustainability Achievements Including Notable Greenhouse Gas Reduction

SEC Filings
Filing date Form Description Filing Group View
424B3

Form of prospectus reflecting facts events constituting substantive change from last form

Registration Statements
4

Statement of changes in beneficial ownership of securities

3,4,5
10-K

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

Annual Filings
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
SC 13G/A

An amendment to the SC 13G filing

Other
5

Annual filing director officer or owner of more than ten percent.

3,4,5
5

Annual filing director officer or owner of more than ten percent.

3,4,5
5

Annual filing director officer or owner of more than ten percent.

3,4,5
5

Annual filing director officer or owner of more than ten percent.

3,4,5