ICF Investor Presentation Q4 2023

We serve a roster of government clients, energy utilities and commercial clients >90% of revenues from government clients + energy utility clients¹ Provides significant opportunities for expansion US Federal 55% Non-US Government 5% 1 Based on full-year 2023 financials released on February 27, 2024 2 Includes energy utilities, commercial marketing, and other US State + Local 16% Commercial 24% 13 ICF

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