Liam Mallon to retire after 34 years of service Dan Ammann appointed President, Upstream Company Barry Engle appointed President, Low Carbon Solutions SPRING, Texas–(BUSINESS WIRE)–ExxonMobil (NYSE: XOM) today announced Liam M. Mallon, president of ExxonMobil Upstream Company and vice president Exxon Mobil Corporation, will retire effective February 1, 2025. The Board of Directors has appointed Dan … Read more