Koppers enters transition agreement with departing CFO Jimmi Sue Smith; details separation payments

Koppers Holdings Inc.

CFO Jimmi Sue Smith retired Jan 5, 2026; continues as Treasurer through Feb 28, 2026.
Transition agreement signed March 9, 2026, effective March 17, covering transition services through Feb 28, 2027.
Smith to receive $440,000 over transition period, plus 2025 annual cash incentive based on performance.
Additional lump sums: $123,400 for equity awards vesting value and $330,000 for target 2026 annual cash incentive.
Payments conditioned on release of claims and transition services.

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