Lori J. Ryerkerk is the chairman, president and chief executive officer of Celanese Corporation, a global chemical and specialty materials company. Prior to joining Celanese Corporation in 2019, Ms. Ryerkerk served as executive vice president of global manufacturing of Shell Downstream Inc., a business of Royal Dutch Shell plc. She served as senior vice president, refining, supply and terminals at Hess Corporation. Prior to that, she spent 24 years with ExxonMobil and served in a variety of operational and senior leadership roles. Director since 2020.