Apple, Tim Cook
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Apple has had a number of high-profile changes this year among its top executive team. Longtime Cook confidante, chief financial officer Luca Maestri, stepped back from his role at the start of this year. Jeff Williams, a Cook protégé, announced he was stepping down as chief operating officer in July.
On Friday, Apple Chief Operating Officer Jeff Williams clocked out for the last time at Apple Park, and is now officially retired.