Kostas G.

Kostas G. is an experienced information security executive currently serving as the Chief Information Security Officer at Pfizer since August 2025. Prior to this role, Kostas held dual positions as Chief Technology Officer and Chief Information Security Officer at Mondelēz International from March 2021 to August 2025. Previously, Kostas served as Chief Information Security Officer at Procter & Gamble from July 2015 to March 2021 and was the Americas Head of Security IT at UBS from June 2012 to July 2015. Kostas also worked as the CISO at NASDAQ from August 2010 to December 2011. Kostas holds a Master of Arts in Law and Diplomacy (MALD) in International Law from The Fletcher School at Tufts University, completed in January 1992.