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

Eduardo Castellon has two decades of experience helping public sector clients—from the U.S. Agency for International Development (USAID) and the U.S. Postal Service (USPS) to the Department of Housing and Urban Development—grow and refine their operations and impact. He has extensive experience delivering consulting expertise focused on artificial intelligence (AI), supply chain, procurement, financial management, and advanced analytics. His technological, consultative, and entrepreneurial skills help clients find new ways to address challenges ranging from affordable housing to homelessness to guaranteed income. He also has extensive expertise in technical assistance and implementation (TA&I) approaches. And his management experience includes developing high-performing teams through skills and career development and succession planning.

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.”

Leonard M. Hicks, whose 20+ years of experience in business operations and financial management includes leading large-scale growth and transformation for Lockheed Martin and the Mission Essential Group, is Abt Global’s chief financial officer and a member of the executive management team. He is a proven entrepreneur who brings best-in-class leadership and collaborative approaches to problem solving.

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.

Jessen Carroll is a human resources (HR) professional with more than 20 years of experience overseeing all aspects of HR, organizational communications, governance, and administration functions. She has experience leading organizational integrations and change management efforts. She also has operations management, business analysis, business process improvement, and project management experience. She can balance tactical day-to-day operational needs with a strategic grasp of long-term business objectives. 

Eric Reading leads major initiatives at the enterprise level for Abt Global, particularly in areas of strategic priority including digital transformation. He previously led Abt Global’s International Development Division, the largest division of the firm.

Jake Zebell is a technology leader with more than 20 years of experience in federal modernization, enterprise architecture, applied AI, and secure system delivery.

Gerald Adolph is an expert in growth strategy, acquisition strategy and merger integration planning for corporate and mission driven organizations. He led the Global Mergers & Restructuring Practice and was elected senior partner over a 35-year career with Booz Allen Hamilton and its successor strategy companies.Adolph was one of the lead practitioners and developers of Booz's very successful capabilities-driven approach to strategy.  During his consulting career he has primarily focused on assisting clients with growth strategies, new business development, innovation strategy and business redefinition. He often works with companies/entities undergoing very significant industry disruption.

Chris has more than 20 years' experience with leading international law firms and major corporates across Asia Pacific, the United Kingdom and the United States.