ICF Investor Presentation Q4 2023

We work with a broad array of government clients Government revenues 76% of total revenues¹ US federal revenues primarily from civilian agencies HHS 26% DOS 6% DOD 3% EPA 3% 14 US State + Local 15% Commercial 24%2 1 Based on full-year 2023 financials released on February 27, 2024 2 Includes energy utilities, commercial marketing, and other DHS 2% USDA 2% GSA 2% TREAS 2% Other Fed 10% Non-US Government 5% ICF

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