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In his career as a senior finance and operations executive, Rehberger most recently served as the Senior Vice President, Chief Financial Officer of Engility, a Virginia-based government contractor.  He held similar positions with TASC from 2010 until its merger with Engility in 2015.  Rehberger helped guide both companies as the government industry cycled through a severe downturn and recovery, counseling the Board of Directors regarding strategy, enterprise risk management, cyber security, and compensation.  He previously held executive positions with telecommunications firms XO Communications and MCI. In 2017, Virginia Business awarded Rehberger the Virginia CFO of the Year award for his outstanding commitment to financial stewardship and dedication to the success of Engility.

Clark Abt, an engineer, environmentalist, entrepreneur, educator and social scientist, is the founder and past president of Abt Global Inc. He served as Abt’s President from 1965 to 1985, Chairman of the Board of Directors from 1986 to 2005, and was then elected Chairman Emeritus. He is the author of 10 books on social and economic policies and advanced technologies, as well as many articles.Clark Abt was born in Cologne, Germany, in 1929, and came to the United States in 1937. He entered the Massachusetts Institute of Technology as a freshman in aeronautical engineering in 1947 and graduated with a bachelor's degree in general engineering in 1951. He then served four months in the Merchant Marine as an ordinary seaman, followed by a year at Johns Hopkins University as an English instructor, obtaining an M.A. from the Department of Writing, Speech and Drama for this master thesis, “A Year of Poems.”

Daniel Gubits conducts research in the areas of housing, homelessness, economic self-sufficiency and disability policy. Gubits’ expertise is in econometric modeling, data analysis, and random assignment program evaluation.Gubits serves as the director of analysis for the Family Options Study, conducted for the U.S. Department of Housing and Urban Development (HUD). He is also leading the impact analysis work for the Social Security Administration’s Benefit Offset National Demonstration (BOND) project. Both of these are random assignment impact evaluations.

Douglas W. Elmendorf, Ph.D., is Lucius N. Littauer Professor of Public Policy at Harvard University’s John F. Kennedy School of Government. He served as Dean of the Kennedy School from 2016 to 2024 and was previously Director of the Congressional Budget Office from 2009 to 2015.Elmendorf has held senior economic positions with the Federal Reserve Board, the President’s Council of Economic Advisers, and the Treasury Department, where he was Deputy Assistant Secretary for Economic Policy. He is a widely respected economist who has deep knowledge of many of Abt’s core research areas, including health care policy and approaches to increasing economic security.Elmendorf is the author of more than 30 publications and has testified before Congress on economic issues 50 times since 2005. 

Diane Fraser started out working in art departments for a marketing product manufacturer in high school and a consulting firm in college. After college, she began a career in non-profits, where she developed and managed communications, public relations, fundraising, and events.

Alan White is a nationally renowned health economist, highly respected for his rapid response to clients’ complex information and research needs with data-driven, creative solutions. As the senior health economist for the Health Policy Practice, he leads high-profile projects and guides the practice’s health economists.

T.J. Pepping is an environmental scientist with 13 years of experience working in the intersection of data analysis and communication, helping clients interpret environmental data and share important information with the public. 

Kathleen Flanagan is president and chief executive officer of Abt Global. She assumed the position on October 1, 2009, after a distinguished career working across the broad range of markets and policy areas that reflect the company's business today. Flanagan joined the company in 1983 as a policy analyst in the Health Area. In 1989 she became managing vice president of the company's Labor Economics Research Area, overseeing research on workforce development and income security programs. In the mid-1990s she launched the International Workforce and Education Practice, winning projects from clients including the U.S. Agency for International Development, World Bank and U.S. Department of Labor. In 1998, she launched the company's Housing and Community Revitalization practice and built a team of more than 75 researchers and technical assistance staff working on affordable housing and community development policies at the federal, state and local levels. In 2005, she was named group vice president for social, economic, and health policy.

William Tuleu leads strategic growth initiatives across the company's U.S. foreign assistance and domestic portfolios.