VANGUARD GROUP INC - 30 Sep 2025 SCHEDULE 13G/A Report for Koppers Holdings Inc Common Stock (KOP)

Filing Manager
VANGUARD GROUP INC
Reporting Manager
The Vanguard Group
Symbol
KOP
Shares outstanding
19.7M shares
Disclosed Ownership
1.54M shares
Ownership
7.8%
Form type
SCHEDULE 13G/A
Filing time
31 Oct 2025, 11:04:23 UTC
Date of event
30 Sep 2025
Previous filing
30 Apr 2025

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
The Vanguard Group 7.8% 1.54M 0 151K Ashley Grim Head of Global Fund Administration