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Sarah Gibson is a project-management specialist with 23 years of experience in public policy research. She has more than 20 years of experience managing complex projects, implementing random assignment studies and researching and analyzing policy for clients such as the Social Security Administration and the Department of Housing and Urban Development. She is proficient in project management, including resource management, budgeting and quality control.

Chris Long has over 35  years of management consulting and service delivery expertise in the public-sector market. At Abt, he is focused on shaping and driving delivery of strategy and transformation solutions to our clients. He provides executive oversight of operations, growth, delivery, and innovation, while fostering collaboration enterprise-wide.

Harold Poston has more than 25 years of experience in federal IT, with deep subject matter expertise across Health IT modernization, Defense Health Agency programs, and Army enterprise IT transformation. Poston leads Abt’s growth strategy for Military Health and VA, connecting federal clients to Abt’s capabilities in digital transformation, data services, and program modernization.

Katharine Witgert is a health policy researcher with 20 years of public health and health care policy experience. Witgert manages research and analysis of health system innovations, conducting program evaluations for federal clients, including design, implementation, and reporting of findings. She provides technical assistance to state officials, primarily in the areas of Medicaid reforms and building Medicaid agency partnerships with public health, behavioral health, and social services programs.

Dr. Reerink has more than 25 years of experience in promoting gender equality and social inclusion in international development, with a strong focus on the Asia-Pacific region.

Jennifer S. Riggs, Ph.D., brings her extensive research, policy, and nursing experience to improve care for patients, especially older adults. Her clinical area of expertise is Medicare-certified home health and home and community-based care for adults and older adults with multiple co-occurring chronic conditions and complex care coordination needs.

James Gilling, regional vice president, East Asia and Pacific, has almost 40 years of experience in social and economic development in low- and middle-income countries. He has overseen Australian aid programs worth hundreds of millions of dollars and managed large teams of Australian and overseas staff, including as head of the Australian aid program in Indonesia. James has worked for United Kingdom (UK) and Papua New Guinea governments as an agricultural economist. He has also worked as a consultant economist with Oxford Policy Management in the UK and was an economic analyst with the Office of National Assessments in Australia.

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. 

Gary L. Perlin, the retired chief financial officer of Capital One Financial Corporation, is the non-executive chairman of Abt Global’s Board of Directors.Perlin has more than three decades of experience in senior finance roles in for-profit and not-for-profit organizations. As CFO of Capital One – one of the largest financial services companies in the nation – Perlin was responsible for the company’s overall financial management. He was named “Best Finance Company CFO” for four years by Institutional Investor magazine between 2007 and 2011.