On December 4, 2023, ICF International, Inc. announced that Mr. Mark Lee, Executive Vice President, would be leaving the Company to pursue other opportunities. Mr. Lee?s departure is not due to any disagreement or dispute with the Company. Mr. Lee will continue to serve in his role with the Company through January 5, 2024, to support the Company in transitioning his responsibilities.

Mr. Lee will receive compensation and benefits in accordance with previously filed agreements and as set out in the Separation Agreement and Release filed herewith.