Repsol, S.A. created a new role of chief executive officer to take over day-to-day management duties from Chairman Antonio Brufau. Josu Jon Imaz, a well-known former politician from the northern Basque region who joined Repsol in 2008, will become chief executive. Brufau, who has served as executive chairman of Repsol for nearly a decade, will remain as chairman in a nonexecutive capacity.