Vanguard Capital Management Establishes 5.08% Passive Stake in Koppers Holdings Inc. (KOP)

On April 30, 2026, Vanguard Capital Management LLC filed a Schedule 13G reporting a new 5.08% stake in Koppers Holdings Inc. (KOP). As of the event date on March 31, 2026, the firm beneficially owns 983,577 shares of common stock. This position represents a significant increase from a previous holding of zero shares. According to the filing, Vanguard Capital Management exercises sole dispositive power over all 983,577 shares, while holding sole voting power over 143,131 shares. The filing was made under Rule 13d-1(b), indicating that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The reported holdings include shares managed by various Vanguard affiliates, including Vanguard Asset Management Limited and Vanguard Global Advisers, LLC. No other single person's interest in the reported securities exceeds 5% of the total class.