David Cook joined GCS as CEO in October 2023. Prior to joining GCS, Cook served as a chief executive, senior leader, and non-executive board member for several global, publicly traded, and private companies. Most recently, Cook was a Director of Vaalco Energy, following its merger with TransGlobe Energy Corporation of which he was Chair from 2019 to 2022. Previously, he served as CEO of Noreco in London and INEOS DENOS in Copenhagen. Earlier in his career, he spent more than 20 years with BP in various international assignments. Cook earned a bachelor’s degree in Geophysics and a Ph.D. in Geological Sciences from Michigan State University.