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Kevin O’Reilly is Abt’s principal accounting officer and a member of both the Pension and 401(k) Advisory Committees. He oversees financial reporting, global tax compliance, government accounting compliance, retirement services, billing, general accounting, payroll and accounts payable. O’Reilly joined Abt Global from Ropes & Gray, LLP, an $800-million law firm, where he was director of finance. Earlier in his career, O’Reilly spent more than 12 years in progressively more responsible roles at Private Healthcare Systems, Inc. He began as manager of accounting and was vice president and controller before the company was sold. O’Reilly also serves as the chairman of the advisory board at St. Francis Xavier School.

Colleen Grogan Moore has over 30 years of experience implementing community development and housing-based programs in collaboration with state and local governments and nonprofit organizations. She has expertise in providing technical assistance (TA) and training, including to recipients of Department of Housing and Urban Development (HUD) community development, housing, and homeless program funding. She has experience building strong relationships with state and local program grantees and managers and supporting communities in effectively using resources.

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.

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.

Philippa Venning has more than 25 years of experience working in international development across the Asia Pacific for government, the private sector, multilateral organisations and NGOs.

Michael R. Anderson is Chief Executive Officer of MedAccess, a not-for-profit social-finance company based in London. He has expertise in global development, health, nutrition, and climate issues. Anderson has worked in the public, private, and nonprofit sectors in Africa, the Middle East, and India. He held multiple roles within the U.K.’s Department for International Development (DFID) from 2003 to 2013, the final one being Director General . He subsequently became the first salaried CEO of the Children’s Investment Fund Foundation, one of the largest philanthropies in Europe. 

Peta Leonard is an experienced technology leader with more than 20 years of success guiding IT modernization programs.

Ally Lynch has nine years of experience managing international development and humanitarian projects in the Asia Pacific region. She has led programming across a range of impact areas, including nature-based solutions for climate, food security, livelihoods, climate resilience, and disaster risk reduction.

Baris Yener has more than 25 years of experience in executive leadership, growth strategy development, and organizational transformation. His business-development and project work has involved a wide range of clients, including the World Bank, Department of Defense, Department of Homeland Security, Centers for Disease Control and Prevention, and other private sector and federal agencies.As Chief Client Officer at Abt, Yener leads client strategy and growth to ensure the voice of the customer drives investment decisions, capability development, and market execution.