Koppers Reports Achievements in Safety, Sustainability and Financial Performance

SEC Filings
Filing date Form Description Filing Group View
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

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
10-Q

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

Quarterly Filings
SC 13G

A statement of beneficial ownership of common stock by certain persons

Other