Exhibit 99.1

ICF International Reports Full Year and Fourth Quarter 2013 Results

Full Year 2013 Highlights

Fourth Quarter Highlights

Acquisitions

2014 Full Year Guidance

FOR IMMEDIATE RELEASE

Contacts: Douglas Beck, ICF International, 1.703.934.3820
Lynn Morgen/Betsy Brod, MBS Value Partners, 1.212.750.5800

FAIRFAX, Va. (February 26, 2014) — ICF International, Inc. (NASDAQ:ICFI), a leading provider of consulting services and technology solutions to government and commercial clients, reported results for the full year and fourth quarter ended December 31, 2013.

Full Year 2013 Results

“Full year 2013 was representative of our differentiated business model. For the third consecutive year, commercial revenue growth significantly outpaced total revenue growth, driven by an 18 percent increase in revenues from energy efficiency clients and solid performance across our other commercial activities. International government revenues increased 44 percent year-on-year, demonstrating our ability to successfully leverage existing expertise and qualifications and integrate acquisitions to expand our pipeline and improve win rates.”

“ICF’s increased spending on business development over the last two years has yielded excellent returns on our investments. Contract awards reached a record $1.2 billion in 2013, up 21 percent year-over-year, reflecting the importance of our domain expertise in the broad areas of health and energy and the increasing number of implementation projects that we have captured as natural follow-ons to our advisory work,” said Sudhakar Kesavan, Chairman and Chief Executive Officer.

For full year 2013, revenue was $949.3 million, up 1.3 percent over the $937.1 million reported for full year 2012. Service revenue, total revenue less subcontractor and other direct costs, increased 0.6 percent to $709.8 million. EBITDA was $85.4 million; and EBITDA margin was 9.0 percent. Operating income was $64.7 million compared to the $66.2 million reported in 2012. Net income increased 3.3 percent to $39.3 million, and earnings per diluted share were $1.95, up from $1.91. Adjusted earnings per diluted share, which exclude acquisition costs, were $1.98 in 2013, up from $1.93.

ICF experienced growth across two of its three key markets in 2013. Health, Social Programs, and Consumer/Financial increased 4.0 percent, and Energy, Environment, and Infrastructure was up 1.7 percent, together accounting for 88 percent of total revenues.

“ICF’s fourth quarter results were affected by the 16-day government shutdown in October, but were in line with the guidance we provided in November,” said Mr. Kesavan. “As anticipated, our growing commercial and international government businesses, and a pick up in state and local projects, enabled us to partially offset the revenue decline related to the government closure.”

For the fourth quarter, revenue was $229.8 million, a 1.0 percent decrease from the $232.0 million reported in the 2012 fourth quarter. Service revenue decreased 0.8 percent to $171.3 million. Fourth quarter profitability was significantly impacted by the government shutdown. EBITDA was $17.7 million, and EBITDA margin was 7.7 percent. Operating income was $12.6 million, compared to the $14.5 million reported in the 2012 fourth quarter. Net income was $7.8 million, or $0.38 per diluted share compared to $9.2 million, or $0.47 per diluted share earned in the comparable 2012 period.

Backlog and New Business Awards 

Backlog was $1.7 billion at the end of 2013, up 10 percent from $1.5 billion at 2012 year-end. Funded backlog was $697 million, or 42 percent of total backlog. The total value of contracts awarded in the fourth quarter of 2013 was $224 million, up 36 percent from the same period last year. The total value of contracts awarded in 2013 was $1.2 billion, up 21 percent over 2012 levels.

Commercial Business 2013 Highlights 

Revenues from commercial clients increased 7 percent in 2013 to $267.9 million and represented 28 percent of total revenue, up from 27 percent in 2012. Excluding a large infrastructure project that was in a slower phase of construction in 2013, commercial revenues increased 9.7 percent. Revenues from energy efficiency clients increased 18 percent and accounted for 39 percent of commercial revenues.

Key Commercial Sales Highlights for the Fourth Quarter 

Commercial sales awards were $83 million for the 2013 fourth quarter, representing 37 percent of total sales for the period, and a book-to-bill ratio of 1.2.

ICF was awarded more than 400 commercial projects globally in the fourth quarter. Individual commercial sales in excess of $1 million included:

Primary areas of additional awards included residential as well as commercial and industrial energy efficiency projects, aviation industry consulting, management consulting for health insurers, health survey research, interactive data applications for health care insurers and large financial institutions, environmental program and compliance management, and market studies for utilities and industry associations.

Government Business 2013 Highlights

Key Government Contracts Won in the Fourth Quarter 

ICF was awarded more than 100 U.S. Federal Government contracts and task orders and hundreds of additional contracts from other U.S. state and local and international governments. The largest awards included:

Additional individual government awards of greater than $1 million included educational simulation support for medical training for the U.S. Navy, strategic communications and software support to two offices of the National Institutes of Health, web support for two offices of the Department of Health and Human Services, information portal support for the Department of Education, program support for two offices of the Department of Transportation, and analytical support to the National Science Foundation.

Acquisitions of CITYTECH, Inc., and Mostra SA

ICF is announcing today that it has signed a definitive agreement to purchase CITYTECH, Inc., a Chicago-based digital interactive consultancy specializing in enterprise applications development, web experience management, mobile application development, cloud enablement, and managed services. For 2013, CITYTECH had annual revenues of approximately $16 million and 100 employees.

“A leading partner with Adobe, CITYTECH will add expertise to ICF’s content management capabilities. It is a complementary fit with ICF Interactive, which combines user experience, creative services, systems integration, marketing, and e-commerce services into an integrated suite of capabilities designed to meet commercial and government clients’ digital and interactive business needs,” Mr. Kesavan said.

This transaction follows ICF’s recent acquisition of Brussels-based Mostra SA, a fully-integrated communications firm with annual revenues of approximately $40 million and 140 employees. Mostra offers end-to-end, multi-channel communications solutions to assist government and commercial clients in reaching out to their stakeholders and customers. The firm is a key provider of strategic communications to European Union institutions, in particular the European Commission, and significantly increases ICF’s ability to deliver implementation services in Europe.

Summary and Outlook 

“In 2013, we continued to execute effectively on our strategy to drive growth by building our commercial and international government qualifications and business wins. Since the end of the year, we have announced two acquisitions that are strategically important and expected to be accretive in 2014. Both position us to further expand our implementation activities, and Mostra will also enable us to replicate the success of our program lifecycle strategy in our international operations.”

“In 2014, we expect our commercial and international government activities to further increase as a percentage of revenues. While we will continue to invest in growth initiatives, we expect to see meaningful margin improvement coming from scale benefits, a more favorable business mix, and increased productivity.”

“In 2014, we expect to exceed the $1 billion milestone in revenues and generate EBITDA around $100 million. Based on our current portfolio of business, including the acquisitions of Mostra and CITYTECH, we expect full year 2014 revenues of $1.025 billion to $1.065 billion and earnings per diluted share of $2.27 to $2.37, based on approximately 20.2 million diluted weighted average number of shares outstanding and an effective tax rate of 38.5 percent. Our operating cash flow for 2014 is expected to be $70 million to $80 million,” Mr. Kesavan noted.

About ICF International

ICF International (NASDAQ:ICFI) provides professional services and technology solutions that deliver beneficial impact in areas critical to the world’s future. ICF is fluent in the language of change, whether driven by markets, technology, or policy. Since 1969, we have combined a passion for our work with deep industry expertise to tackle our clients’ most important challenges. We partner with clients around the globe—advising, executing, innovating—to help them define and achieve success. Our more than 4,500 employees serve government and commercial clients from more than 60 offices worldwide. ICF's website is www.icfi.com.

Caution Concerning Forward-looking Statements

Statements that are not historical facts and involve known and unknown risks and uncertainties are "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Such statements may concern ICF’s current expectations about its future results, plans, operations and prospects and involve certain risks, including those related to the government contracting industry generally; ICF’s particular business, including its dependence on contracts with U.S. federal government agencies; and its ability to acquire and successfully integrate businesses. These statements include those that refer to ICF’s current expectations about the acquisitions of Mostra and CITYTECH. These and other factors that could cause ICF’s actual results to differ from those indicated in forward-looking statements are included in the "Risk Factors" section of ICF’s securities filings with the Securities and Exchange Commission. Although ICF’s expectations are based on what management believes to be reasonable assumptions, it cannot assure the expectations reflected in this document will be achieved as they are subject to risks and uncertainties that are difficult to predict and may be outside of ICF’s control. Such risks and uncertainties include the possibility that the benefits anticipated from the Mostra and CITYTECH transactions will not be fully realized, the possibility the CITYTECH transaction may not close, and other risks in connection with both the proposed CITYTECH transaction and the integration of Mostra. The forward-looking statements included herein are only made as of the date hereof, and ICF specifically disclaims any obligation to update these statements in the future.

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