Primary Job Title Founding Partner Primary Organization Global Security and Intelligence Strategies
Location Arlington, Virginia, United States Regions Washington DC Metro Area, East Coast, Southern US Gender Male
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Mark Sullivan is a Founding Partner at GSIS. Prior to co-founding GSIS, Mark Sullivan was a federal law enforcement agent for nearly 35 years. Mark Sullivan concluded his federal service as the Director of the United States Secret Service (USSS), beginning as an entry level field agent and ultimately serving in a variety of leadership roles in the
organization for nearly 30 years. As an effective and strategic chief executive, Mark Sullivan led high impact initiatives in criminal investigations and protective operations, strategic planning, threat assessment and risk management, human capital management, technology deployment, IT modernization and budget development and execution.
At GSIS, Mark Sullivan works with clients on a variety of domestic and international security issues including financial and intellectual property investigations, business due diligence, major event planning, security vulnerability assessments for sports venues, buildings and critical infrastructure, risk management consultation, and security training and executive protection. Mark Sullivan also chaired a panel of security experts, convened by the US Department of State, which was charged with identifying best security practices when operating in high threat areas. Mark Sullivan currently serves on the Board of Directors for Uber, LiveSafe and Evolv Technology.
Mark Sullivan is a graduate of St. Anselm College, Manchester, NH. He is a graduate of the Senior Executive Fellows program at Harvard’s John F. Kennedy School of Government.
