Greg Sullivan

Founder and CEO

Greg Sullivan is the founding partner at CIOSO Global, specializing in cybersecurity and technology risk management. He advises clients on regulatory compliance and cybersecurity strategies, helping organizations design and implement risk-based cybersecurity capabilities. Previously, Sullivan served as senior vice president & global chief information officer at Carnival Corp., leading global IT, innovation and cybersecurity efforts. He also held leadership roles as CEO and CTO at Global Velocity, focusing on enterprise and cloud security.