John W. Thompson joined the Microsoft Board in February 2012 and became independent chairman of Microsoft Corporation on Feb. 4, 2014.
Thompson is the chief executive officer of privately held Virtual Instruments, whose products are designed to ensure the performance and availability of applications deployed in virtualized and private cloud computing environments. Thompson is also the former chairman and CEO of Symantec Corp.
Since 2009, Thompson has been an active investor in early-stage technology companies in Silicon Valley.
During his 10-year tenure as CEO of Symantec.