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Kevin Turner
B. Kevin Turner (born April 3, 1965) is an American businessman and investor who is currently the chairman of Zayo Group and the vice chairman of Albertsons/Safeway Inc. From 2016 to 2017, he was the vice chairman of Citadel LLC and CEO of Citadel Securities. Prior to joining Citadel LLC, Turner served as the COO of Microsoft from 2005 to 2016. Turner came to Microsoft from Walmart in 2005. During his nearly 20 years at Walmart, Turner rose through the ranks from a store cashier to eventually becoming the company's global CIO and later CEO of Sam's Club, a $37 billion division of Walmart.As Microsoft's chief operating officer, Turner led the company’s global sales, marketing and services organization. He also managed Microsoft’s partner channels and corporate support functions, including information technology, licensing, pricing, and operations. His organization included over 70,000 employees in more than 190 countries. During his tenure as COO, Turner served through the transitions of Bill Gates, Steve Ballmer and Satya Nadella.
Source: Wikipedia