Allen Martirossian, former vice president of financial planning and analysis at Constellis, has joined security firm System High as executive vice president and chief financial officer.

Beth Skoletsky, a more than 20-year human resources executive, has joined Reston, Va.-based risk management and operational support services contractor Constellis as chief HR officer.

Jim Garrettson, founder and CEO of Executive Mosaic, presented Tim Reardon, chief executive officer of Constellis, with his third Wash100 Award on Tuesday. Executive Mosaic recognizes Reardon for his leadership and experience in the defense and intelligence industries creating organic growth for several companies. We are proud to present the …

Constellis has made a series of appointments as part of an organizational realignment. Constellis CEO Tim Reardon said in a statement published Friday the organizational changes seek to accelerate the company’s growth, optimize client mission focus and build up operational efficiency. Paul Donahue, chief operating officer at Constellis and president …

Sharon Watts, formerly an executive at Leidos (NYSE: LDOS) and Lockheed Martin (NYSE: LMT), has joined Constellis as chief administrative officer. Constellis CEO Tim Reardon said in a statement released Monday Watts brings to the company “a strong background in information systems, human resources, staffing and optimizing merger and acquisition synergies.” She …

Michael Armbrecht, former chief financial officer of Israel Aerospace Industries’s North American subsidiary, has joined Constellis as chief accounting officer at the Reston, Va.-based risk management and operational support services contractor. He brings more than 25 years of financial and global team leadership experience to Constellis and will oversee its accounting strategy and functions in his …

Gordon Foster, formerly executive vice president and chief financial officer of ASRC Federal, has joined Constellis as CFO. He brings more than two decades of finance, accounting, mergers and acquisitions, operations and business strategy experience to his new position, Constellis said Thursday. “His experience and qualifications in financial strategy and business management …

Tim Reardon, formerly president of defense and intelligence business at Leidos (NYSE: LDOS), has joined Constellis as CEO. Reardon succeeds the retiring Jason DeYonker, Constellis co-founder who has been serving as CEO since October 2015, the company said Wednesday. DeYonker and the retiring Dean Bosacki, Constellis co-founder and president, will …

Deborah Ricci, formerly senior vice president of finance and accounting at Constellis, has been promoted to chief financial officer of the Reston, Virginia-based risk management and operational support services contractor. Constellis said Thursday Ricci succeeds Barry Broadus and will oversee the company’s financial strategy and operations as CFO. “Debbie is extremely qualified for this …

Reston, Virginia-based risk management and operational support services contractor Constellis has agreed to purchase OMNIPLEX World Services for an undisclosed sum in a push to add the latter’s investigative services to its portfolio and expand its client base in the U.S. intelligence community. Constellis said Monday both companies’ board of directors approved …