Chief Financial Officer and Chief Operating Officer, X (The Moonshot Factory)
Helen Riley
Helen Riley is the Chief Financial Officer and Chief Operating Officer at X (The Moonshot Factory), a research and development company and subsidiary of Alphabet, Inc. Helen joined X in 2015 as Vice President and Chief Financial Officer before assuming her expanded executive role in 2023. For over two decades, Helen has held various senior leadership positions at Alphabet and its subsidiaries, including in global financial strategy, analytics and sales finance. She more recently served at Google as Senior Finance Director of Global Marketing from 2013 to 2015 and as Finance Director of Global G&A from 2011 to 2013.
An experienced public company director, Helen served on the boards of directors of Eventbrite, Inc., a global live event ticketing platform, from July 2018 to April 2026, and Marqeta, Inc., a digital payment platform, from May 2020 to June 2025. Helen received her Bachelor of Arts and Master of Arts in Philosophy, Politics and Economics from the University of Oxford and a Master of Business Administration from Harvard Business School.