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Executive Leadership Team

Charles L. Harrington

Chairman and Chief Executive Officer

Charles Harrington was appointed Chief Executive Officer in May 2008. He was named Chairman of the Parsons Board of Directors later that year and President of the corporation in 2009. Before his appointment in 2006 to the position of Executive Vice President, Chief Financial Officer, and Treasurer of Parsons, Mr. Harrington was the founding President of one of Parsons’ business units. In addition to his responsibilities at Parsons, Mr. Harrington serves on the boards of AES Corporation and J.G. Boswell Company. He also serves on several nonprofit boards, including the Business-Higher Education Forum, the California Science Center Foundation Board of Trustees, and the California Polytechnic State University San Luis Obispo Foundation Board of Directors.


Garold B. "Gary" Adams

President – MEA

Gary Adams is President of Parsons Middle East Africa (MEA) business unit and is responsible for leading the company’s operations throughout the MEA region. Before his role as President of MEA, Mr. Adams held positions with increasing levels of responsibility, most recently as Executive Vice President and Global Operations Director of Parsons Transportation Group (now the Infrastructure business unit). In California, he served on several regional boards, including a toll road agency, and lectured at two universities on engineering and transportation topics. Mr. Adams is a fellow in both the American Society of Civil Engineers and the Institute of Transportation Engineers.


George L. Ball

Sr. EVP, Corp – Finance

George Ball was appointed Chief Financial Officer and Executive Vice President in 2008. Since joining the company in 1983, he has served in a variety of financial and operational positions. In addition to his responsibilities at Parsons, he serves on the Board of Directors of NCI Building Systems, Inc., Wells Fargo Real Estate Investment Corporation, Ronald McDonald House Charities of Southern California, and the Los Angeles Arboretum Foundation Board of Trustees.


Clyde E. "Sonny" Ellis, Jr.

SVP, Corp – General Counsel and Secretary

Sonny Ellis serves as Senior Vice President, General Counsel, and Secretary of Parsons Corporation. He joined Parsons in 2005 as Senior Legal Counsel for Parsons Transportation Group (now Parsons Infrastructure). Before that, he held legal positions such as Counsel for General Electric Company’s Transportation division, as well as an associate and then partner with the international law firm of Bryan Cave LLP, where he specialized in corporate and international business transactions, technology transfers, and regulatory trade matters.


Debra A. Fiori

SVP, Corp – Talent Management

Debra Fiori serves as Corporate Senior Vice President of Talent Management and is responsible for leadership development, succession planning, organizational design, reward systems, talent acquisition, and human resources operations. Ms. Fiori joined Parsons in 2007 as Talent Management Director and then progressed to Vice President. Ms. Fiori is a member of the Society for Human Resources Management, G100, the Human Resources Roundtable at the University of California at Los Angeles, and the Women Transportation Seminar. She currently serves on the Board of Kidspace Children’s Museum.


Donald D. "Don" Graul

President – Construction

Don Graul is President of Parsons’ Construction business unit and leads the corporation’s infrastructure construction business throughout North America. He rejoined Parsons in February 2015 as Executive Vice President of Design-Build Construction, and he previously served as Senior Executive for Alternative Project Delivery. Mr. Graul is a member of the Construction Industry Round Table, the American Road & Transportation Builders Association, the Transportation Research Board, the American Society of Civil Engineers, and the Design-Build Institute of America.


Virginia Grebbien

EVP, Corp – Chief of Staff

Virginia Grebbien is Executive Vice President and Chief of Staff. She oversees the corporation’s strategy development, key account management, marketing and communications, and government relations functions. She joined Parsons in 2008 and most recently served as the President of one of Parsons’ business units. In addition to her water sector experience, Ms. Grebbien has considerable experience in government relations, public policy, strategic customer development, business development, project development and finance, and project management. She currently serves on the boards of the California Science Center, the Southern California Water Committee, and the Los Angeles Sports Council.


Dean Harwood

EVP, Corp – Operations

Dean Harwood is Executive Vice President of Operations, responsible for managing operations and business support across the global organization, including enterprise safety, quality, sustainability, innovation, information services, security, and project management; concession roles in public-private partnerships; and mergers and acquisitions. Mr. Harwood joined Parsons in 2001 as Chief Financial Officer for one of Parsons’ business units. He has also served as President of Parsons Enterprises and as Vice President of Strategy & Development, where he worked with company management to develop and implement overall corporate strategy as well as market-specific strategies.


Michael W. "Mike" Johnson

President – Infrastructure

Mike Johnson is President of Parsons Infrastructure, a primary business unit providing full-service engineering, management, and technical services in the North American transportation, infrastructure, oil and gas, water, and wastewater markets. Mr. Johnson has more than 25 years of progressive experience, ascending from the management of multimodal projects and corridor/infrastructure development for complex projects to his most recent position as Executive Vice President of Business Development. He is a member of several professional organizations such as the International Bridge, Tunnel and Turnpike Association; the Design-Build Institute of America; the American Public Transit Association; and the American Road and Transportation Builders Association.


Thomas L. "Tom" Roell

Vice Chairman – Chief Risk Advisor

Tom Roell is Vice Chairman and Chief Risk Advisor of Parsons Corporation. In this role, Mr. Roell is responsible for the corporation’s enterprise, portfolio, and project risk functions. Prior to this position, he served as Group Executive for Operations & Risk, where he was responsible for worldwide business unit operations, enterprise risk, quality management, and global initiatives focused on sustainability, innovation, and project management. Before that, Mr. Roell served as President of Parsons Infrastructure & Technology Group (now the Federal business unit). He is Chairman of the Board of Directors of the Engineering & Construction Risk Institute. Mr. Roell is also a recipient of the Pennsylvania State University 2012 Outstanding Engineering Alumnus Award.


Carey A. Smith

President – Federal

Carey Smith is President of Parsons’ Federal business unit, with responsibility for its global operations. Federal delivers services to a broad range of government customers across the engineering and technical services, security, intelligence, infrastructure, environmental, training, and logistics markets. Before joining Parsons, she served in progressive leadership roles at Honeywell, including President of the Defense and Space business unit, Vice President of Honeywell Aerospace Customer and Product Support, and President of Honeywell Technology Solutions, Inc. Prior to joining Honeywell, Ms. Smith held various positions with Lockheed Martin Corporation. She is a member of the Professional Services Council's Executive Committee and Board of Directors.