Koppers Holdings (NYSE: KOP) insider plans Rule 144 sale of 80,000 shares

Koppers Holdings Inc. (NYSE: KOP) has filed a Form 144 indicating an insider's intention to sell 80,000 shares of common stock through Fidelity Brokerage Services LLC on or after August 7, 2026. The aggregate market value of these shares is approximately $4,000,668.23, out of 18,911,568 shares outstanding. The shares were accumulated through restricted stock vesting events, ESPP purchases, and stock option exercises between 2017 and 2025.