Apple's C-suite undergoes major reshuffle — here's what it means for CEO Tim Cook

Williams, Cook's most trusted deputy, will exit in December. Sabih Khan, Apple's senior vice president of operations, who is in his late 50s, is slated to assume the COO title. Meanwhile, Chief Financial Officer Luca Maestri has been succeeded by Kevan Parekh, and longtime product executive Dan Riccio departed at the end of last year. The company is seeing its biggest management shake-up in decades. Apple has quietly undergone a major restructuring of its management team that has sparked speculation about t ...