#1Q3 2022 00 * 600.000 600 0000000 0000000 ICF Investor Presentation 0000000000 0000000 0000 0000000 0000000 00000000000000 00000000000000000 000000 000 0000000 0000 000002 00000 000000000 90 司 ICF November 2022#2Cautionary statement Certain statements made by us in this presentation that are not historical facts or that relate to future plans, events, or performances are forward-looking statements within the meaning of the federal securities laws. Our actual results may differ materially from those expressed in any forward-looking statements made by us. All statements made by us in this presentation are qualified in all respects by the information disclosed in our filings with the Securities and Exchange Commission and specifically, the risks described therein under the heading "Risk Factors". We are under no duty to update or revise any forward-looking statements pursuant to actual results or events, and do not intend to do so. VICE 2#3ICF: A professional + technology services firm VICE Serve a roster of government clients with social + environmental missions, energy utilities + commercial clients Deliver strong cross- cutting capabilities in technology + engagement A growth platform combining organic initiatives + acquisitions Leverage deep domain expertise to achieve superior results for clients Benefit from visibility of a substantial backlog + growth profile of commercial revenues 3#4Synergy in markets + capabilities ICF's work across core service areas including climate, energy efficiency, disaster management, public health and social programs addresses environmental and social issues Energy, Environment + Infrastructure 39% Health + Advisory + Strategy Social Programs 49% Consumer + Financial 5% Safety + Security 7% VICE Based on Q3 2022 TTM financials released on November 3, 2022 Program Management Technology, Analytics + Engagement#5Track record of strong revenue + EPS growth VICE Revenue: 5-year CAGR 5.6% Non-GAAP EPS: 5-year CAGR 10.9% GAAP EPS: 5-year CAGR 9.2% 5-year Total Revenue, Non-GAAP EPS, and GAAP EPS CAGRS calculated over 2016-2021 5#6Multiple catalysts for long-term organic growth VICE IT modernization / digital transformation. Public health Disaster management Energy efficiency + utility consulting Climate, environment + infrastructure consulting >70% of service revenue in 2022 expected to represent work in these key growth areas + expected to grow 10% or more over the next several years#7ICF IT modernization / digital transformation AD-58457-DJ-JK Acquisitions have significantly expanded our qualifications qualific 88888 ITG Creative Systems SemanticBits Expertise in >30 technology platforms. IT modernization is a bipartisan priority Provide significant revenue synergies in our federal civilian agency markets ICF is now a recognized leader in the most widely used low-code / no-code and open-source platforms in the federal government 7#8SemanticBits acquisition Leading provider of agile software development and digital transformation services to key U.S. federal health agencies High teens EBITDA margin expected as part of ICF 430 Employees 135+ Software engineers 100% FFP and T&M contracts ~90% of revenues with CMS semanticbits CMS CENTERS FOR MEDICARE & MEDICAID SERVICES FDA GSA Addressing Critical Health Domains CD C CENTERS FOR DISEASE. CONTROL AND PREVENTION SNUCLEAR UNITED S REGULATORY ***** AY COMMISSION Leading Technology Services Agile software development and delivery Data science, analytics, and machine learning/Al Data engineering and DataOps DevOps and cloud Human-centered design Healthcare and federal policy expertise راد ICF BA Health IT Biospecimen management Clinical genomics Bioinformatics Clinical trials 8#9. Public health HHS is ICF's largest federal agency client - 22% of total revenues* 11% budget increase at HHS for FY22 Recognized expertise in addressing critical health issues- opioid abuse, obesity, cancer ICF has contract vehicles in all federal agencies actively involved in preparations for the next pandemic: Modernization of disease surveillance systems Guidelines for government roles and responsibilities in a pandemic VICF ICF is recognized for deep domain expertise in public health and its expanded IT modernization capabilities *Based on Q3 2022 TTM financials released on November 3, 2022#10AUK56450010 Disaster management 00 JL OF ICF is a leader in disaster management with a long track record of managing post-disaster federally funded recovery programs Federal funding for mitigation programs provides potential for steady flow of longer-term opportunities Currently running disaster recovery programs in 20+ states and territories Working on mitigation efforts for 30+ clients in 14 states Expect continued growth as appropriated disaster recovery and mitigation funds are released ICF's expertise in recovery and resilience is closely aligned with efforts to manage the effects of climate change ICF 10#11Energy efficiency and utility consulting Energy efficiency programs for utilities: State-mandated New awards from CA utilities Utility transformation: distributed energy + grid modernization Majority long- term contracts VICE United States Location of ICF Clients Canada N 11#12Biden administration priorities create additional opportunities Overarching goal of decarbonizing U.S. economy ⚫ 2021 Infrastructure Investment and Jobs Act + FY 2022 federal budget • Focus on climate change, environmental stewardship, and infrastructure • Inflation Reduction Act of 2022 provides significant climate and energy-related opportunities ICF is one of the largest full-service climate consulting practices in the U.S., with additional expertise in adjacent services closely connected to climate + infrastructure Climate-adjacent services Disaster mitigation Decarbonization Public health impacts Environmental justice Infrastructure-adjacent services Environment Water Transportation VICE 12#13را ICF Blanton & Associates acquisition An environmental consulting firm providing a broad range of environmental consulting, permitting, and planning services in Texas Strengthens ICF's presence in a state that is set to receive significant federal investment dollars under the IIJA >75 Employees 1997 Year founded Blanton & Associates, Inc. ENVIRONMENTAL CONSULTING PLANNING . PROJECT MANAGEMENT Austin HQ + 2 other offices in San Antonio and Houston Domain areas M Transportation Energy ཅད Water Representative clients LCRA ENERGY-WATER COMMUNITY SERVICES APEX CLEAN ENERGY RWE Luminant Other Texas Department of Transportation GBRA GUADALUPE-BLANCO RIVER AUTHORITY HDR FLATIRON DRAGADOS Worsted ALLIANCE WATER TEXAS PARKS & WILDLIFE 13#14We serve a roster of government clients, energy utilities + commercial clients* >90% of revenues from government clients + energy utility clients Provides significant opportunities for expansion US Federal 53% ICF Non-US Government 7% * Based on Q3 2022 TTM financials released on November 3, 2022 US State + Local 15% Commercial 25%* ** **Includes energy utilities, commercial marketing, + other 14#15We work with a broad array of government clients Government revenues 75% of total revenues* HHS 22% DOS 6% US federal revenues DOD 4% primarily from civilian agencies EPA 3% Based on Q3 2022 TTM financials released on November 3, 2022 GSA 2% USDA 2% DHS 2% TREAS 2% Other Fed 10% ICF US State + Local 15% Commercial 25%* ** Non-US Government 7% **Includes energy utilities, commercial marketing, + other 15#16ICF *nex+ ICF Next: our go-to-market brand for digital and engagement services X+ Business Transformation Combines creativity of an agency with deep domain expertise of a consultancy J3 Loyalty Designs solutions that drive real participation with customers, citizens, colleagues Integrated Communications Successfully integrating engagement services with our legacy energy and health clients 16#17Drivers of long-standing client relationships VICE Institutional memory of government + utility programs Workforce of long-time industry experts Long-term contract vehicles with government + utility clients Proprietary IP/loyalty programs 17#18MARKETING Our culture: a source of competitive advantage Purpose To build a more prosperous and resilient world for all. ICF Values Interact with integrity Bring your passion Embrace differences Challenge assumptions Work together Be greater than#19At ICF, our business, environmental + social responsibilities are intertwined We create impact through our client work... $654M+* Revenue from services supporting energy saving, carbon reduction, and natural resource protection programs $678M+* Revenue from services supporting health, education, development, and social justice programs VICE *Together represent ~85% of 2021 revenue 19#20Impact through program support/execution ENERGY STAR® (2020 data) 400 million metric tons of greenhouse gas reduction $42 billion energy costs avoided 5% of total U.S. emissions of greenhouse gases Smokefree.gov 213,000 American subscribers to the service 14% quit rate that's double the national average of 7% راد BioSense 5,800+ health care facilities nationwide contribute data 1 day data available within 24 hours of patient visits 6-8 million electronic health messages processed daily Head Start 1 million+ children and families from low- income households enrolled Utility Energy Efficiency Programs (2021 data) 180 programs delivered nationwide 5.4 million lifetime metric tons of CO2 avoided $1.9 billion total financial impact ICF 6 regions served by ICF, including 40 states, the District of Columbia, and 140 tribes $63 billion+ Disaster Management Programs 100,000 disaster recovery funds managed homeowners helped 20#21...and in the way we operate ICF is proud of how we operate in our communities and in society Environment Carbon neutral since 2006 – high quality RECs & offsets CDP "A" list CDP Climate Leadership Award Total & per-employee emissions declining since 2013 80% 60% 40% 20% 0% -20% -40% -60% -80% -100% 2013 2014 2015 2016 2017 2018 2019 2020 Global Revenue Global FTE Employees Global Square Feet Total Emissions --Emissions/Sq Ft --Emissions/FTE --Emissions/MUSD Social Forbes list for "Best Employers for Diversity" 2021 and 2022 ICF philanthropy driven primarily by employee giving choices - 100% match and cash support for volunteer efforts 8 Employee Community Networks • Black Employees • Women . LGBTQIA+ ⚫ First Nation & Indigenous • Veteran ⚫ Asian • Hispanic O Different abilities Governance Strong Lead Independent Director with clearly articulated responsibilities 37.5% female Directors 37.5% minority Directors Board oversees Enterprise risk management process Management succession planning and development Regular executive sessions of independent directors 21#22Financial Performance#23Track record of consistent revenue + earnings Revenue ($ Millions) EPS GAAP EPS $1,553 Non-GAAP Adj.* $1,507 $1,479 $1,338 $1,229 $1,185 $4.82 $4.15 $4.17 $3.73 $3.59 $3.72 | $3.27 1 $3.18 $2.87 $2.87 $3.02 $2.40 5.6% 5 yr. CAGR 10.9% 5 yr. CAGR -- Non-GAAP 2016 2017 2018 2019 2020 2021 2016 2017 ** 2018 2019 2020 2021 ICF *Non-GAAP EPS: GAAP EPS plus tax-affected impact of acquisition-related charges, special charges, and amortization of intangibles **2017 Non-GAAP EPS excludes the one-time benefit of a Deferred Tax Liability (DTL) revaluation for 2017, as a result of the 2017 Tax Reform Act 23 23#24Q3 2022 performance Revenue ($ Millions)* EPS* $1,304.4 $1,165.1 $4.23 $3.64 $1.61 $467.8 $394.1 $946.3 $1.32 $3.10 $2.91 $836.5 $275.6 $335.4 $1.07 $1.01 Q3 2021 Q3 2022 Service Revenue YTD 2021 YTD 2022 ■Total Revenue Q3 2021 Q3 2022 GAAP EPS YTD 2021 YTD 2022 Non-GAAP EPS VICE Service revenue is equal to total revenue less subcontractor and other direct costs excluding direct labor and fringe Non-GAAP EPS: GAAP EPS plus tax-affected impact of acquisition-related charges, special charges, and amortization of intangibles *Based on Q3 2022 financial performance released on November 3, 2022 24#25Contract awards ($ Millions)* Book-to-bill ratio (TTM) Q3 20211.33 Q3 20221.31 VICE $604 $865 $1,598 $1,572 Q3 2021 Q3 2022 YTD 2021 YTD 2022 Backlog ($ Billions)* *Based on Q3 2022 financial performance released on November 3, 2022 Funded Unfunded $3.7 $3.1 $1.9 $1.4 $1.8 $1.7 Q3 2021 Q3 2022 25#262022 guidance* Revenue $1.760B - $1.790B Service revenue 1 $1.275B $1.300B GAAP EPS $3.90 - $4.10** Non-GAAP EPS $5.70 - $5.90 Operating cash flow $120M - $140M *Based on Q3 2022 financial performance released on and as of November 3, 2022 VICE 700 D ** Exclusive of special charges 26#27Pipeline ($B) $7.1 $6.8 $6.8 $6.5 $6.3 $6.0 $9.0 $8.7 $7.9 $7.2 $7.3 $7.1 Q4-19 Q1-20 Q2-20 Q3-20 Q4-20 Q1-21 Q2-21 Q3-21 Q4-21 Q1-22 Q2-22 Q3-22 Strong pipeline of qualified opportunities, the majority relating to federal government clients ICF 27#28Operating cash flow, 2017 - 2022 $M Dividends ■Debt Repayment + Other ■Share Repurchase CAPEX $173.1 $10.5 $120.0 $140.0 $117.2 $110.2 $91.4 $113.5 $10.6 $70.2 $74.7 $10.5 $7.9 $62.5 $31.9 $30.0 $20.5 $27.7 $11.3 $29.7 $17.2 $19.3 $25.5 $28.5 $19.4 $19.9 2017 2018 2019 2020 2021 2022 GUIDANCE* Net Debt $194.4 $188.7 $159.0 $301.9 $415.3 EBITDA $111.0 $119.5 $129.6 $122.9 $142.9 Net Debt/ 1.75x 1.58x 1.23x 2.46x 2.91x EBITDA VICE 2020 included ~$50M of accelerated collections and deferral of $20M of employer social security tax liabilities to 2021/2022 under the CARES Act *Based on Q3 2022 financials released on November 3, 2022 28#29Historical cash flow conversion at ~100% $ Millions $180.0 106% $160.0 $140.0 $120.0 $100.0 $80.0 $60.0 $40.0 $20.0 $84.8 94% $0.0 2016A $80.1 $101.7 $117.2 $100.1 95% $112.9 110% $173.1 106% 104% 105% $116.3 100% $110.2 $106.3 $91.4 $74.7 91% 2017A 2018 A 2019A 2020A 95% 90% 85% 80% 2021A Historical cash conversion 2016A 2017A 2018A 2019A 2020A 2021A Net Income $46.6 $62.9 $61.4 $68.9 $55.0 $71.1 Non-Cash Comp $9.1 $10.3 $11.5 $15.8 $17.6 $13.2 Depr & Amort $29.1 $28.6 $27.2 $28.2 $33.7 $32.0 Adj. Net Income* $84.8 $101.7 $100.1 $112.9 $106.3 $116.3 Operating Cash Flow (Op CF) $80.1 $117.2 $74.7 $91.4 $173.1 $110.2 ICF Cum. Op CF as % of Adj. Net Inc. 94% 106% 95% 91% 106% 104% • Over past six years, we have converted ~100% of our net income (adjusted for non-cash items) and generated strong Operating Cash Flow... ⚫ ...While growing our top line from $1.2B in 2016 to $1.6B in 2021 at a 5.6% CAGR (which required an investment in working capital) • We continue to expect our Operating Cash Flow in 2022 to remain strong at ~$140M, maintaining our conversion trend of ~100%. 29 29#30Our roadmap for long-term value creation ICF 1 Capture organic growth enabled by strong positions in high growth markets and expanded addressable market 2 Drive revenue synergies and larger contract wins through ability to execute at scale 3 Make strategic and accretive acquisitions in areas we know 4 Gain operating efficiencies LO 5 6 Continue to invest in our people Uniquely positive impact 30#31VICF#32VICE icf.com ☑twitter.com/ICF in linkedin.com/company/icf-international f facebook.com/ThisIsICF O #thisisicf VICF About ICF ICF (NASDAQ:ICFI) is a global consulting and digital services company with approximately 8,000 full- and part-time employees, but we are not your typical consultants. At ICF, business analysts and policy specialists work together with digital strategists, data scientists, and creatives. We combine unmatched industry expertise with cutting-edge engagement capabilities to help organizations solve their most complex challenges. Since 1969, public and private sector clients have worked with ICF to navigate change and shape the future.