Investor Relations

Customers come back to Koppers because they know they can depend on us for quality, timeliness and attention to detail.

About our Investor Relations

SEC Filing Keyword Search (View search tips)
Groupings Filter (View SEC Groupings descriptions)
View Section 16 Filings (3,4,5)
Filing DateFormDescriptionFiling Group
02/23/178-KReport of unscheduled material events or corporate eventCurrent Reports Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/23/17SC 13G/AAn amendment to the SC 13G filingOther Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/22/178-KReport of unscheduled material events or corporate eventCurrent Reports Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
02/21/174Statement of changes in beneficial ownership of securities3,4,5 Download SEC Filing to Adobe PDF XBRL SEC Filing Unavailable
<< First | Previous | Next | Last >>