Koppers CFO Jimmi Sue Smith retires; Bradley Pearce named interim CFO

Koppers Holdings Inc.

Jimmi Sue Smith retired as CFO Jan 5, 2026; remains Treasurer/advisor through Feb 28, 2026.
Bradley Pearce, Chief Accounting Officer since May 2019, named interim CFO and CAO.
Company conducting external search for permanent CFO successor.
Pearce's base salary increased to $400,000; cash incentive multiplier raised to 60% from 40%.
Retirement not due to any disagreement or issues with financial statements or policies.

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