Occidental Petroleum’s next chief executive began his career far from the Houston headquarters. On May 1, Occidental announced that COO Richard Jackson will succeed Vicki Hollub as CEO upon her retirement in June. Hollub, who became CEO in 2016, was the first woman to lead a major U.S. oil company, a landmark appointment in an industry long dominated by men. She will remain on Occidental’s board after stepping down. Jackson’s path to the top job adds another layer to the succession story. He joined Occ ...