Koppers Holdings INC 10-K annual reports

Annual reports — audited financials, the full risk-factor list, and management’s account of the year.

NYSE
Koppers Holdings Inc. reported a decrease in net sales and adjusted EBITDA for 2025, alongside an increase in net income, as it embarks on a multi-year transformation to enhance profitability and streamline operations.
NYSE
Koppers Holdings Inc.'s 2024 10-K filing reveals a slight revenue decrease, strategic shifts including phthalic anhydride production discontinuation, and a new share repurchase program.
NYSE
Koppers Holdings Inc. has issued restricted stock unit agreements to selected employees, board members, and consultants, outlining vesting schedules and conditions.