Dr. John L. Hennessy is a Chairman at Alphabet, Inc., a Member at National Academy of Engineering and a Member at National Academy of Sciences.

He is on the Board of Directors at Gordon & Betty Moore Foundation and Chan Zuckerberg Biohub. Dr. Hennessy was previously employed as an Independent Director by Cisco Systems, Inc., a President by Stanford University, and a Chairman by Atheros Communications, Inc.

He received his undergraduate degree from Villanova University, a graduate degree from Stony Brook University and a doctorate degree from Stony Brook University.