Schedule 13G/A
KOP Schedule 13G/A filing by Vanguard Capital Management
Vanguard Capital Management reported beneficial ownership of 955.2K shares, representing 12% of Koppers Holdings Inc. in this filing.
FiledJul 31, 2026
Ownership dateJun 30, 2026
Reported shares955.2K
Reported ownership12%
Ownership details
Voting and dispositive power reported in the filing
These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.
Sole voting power
142.5K
Shared voting power
955.2K
Sole dispositive power
955.2K
Shared dispositive power
955.2K
Price context
Price dates alongside the ownership filing
Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.
Close near filing date$49.02as of Jul 31, 2026
Latest tracked price$51.99as of Aug 4, 2026
Source
Original filing and accession
Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.
- Reporting filer
- Vanguard Capital Management
- CIK
- CIK0002100119
- Accession
- 0002100119-26-001506
- Form
- Schedule 13G/A
Read the filing in context