Founder of Switchbox Labs, Inc., G. Michael Sievert is a businessperson who has been the head of 5 different companies and is President, Chief Executive Officer & Director at T-Mobile US, Inc. and President & Chief Executive Officer for T-Mobile USA, Inc. and President & Chief Executive Officer at Sprint Corp. (both are subsidiaries of T-Mobile US, Inc.).

He is also on the board of Shaw Communications, Inc.

He previously held the position of Chief Executive Officer for Discovery Bay Games, Inc., Principal at Procter & Gamble Co., Vice President-Worldwide Windows Group at Microsoft Corp., Program Director at International Business Machines Corp., Chief Marketing & Sales Officer at E*TRADE Financial Corp., Chief Executive Officer at Switchbox Labs, Inc., Chief Commercial Officer at Clearwire Corp. and Chief Marketing Officer & Executive Vice President for AT&T Wireless Services, Inc.

He received an undergraduate degree from The Wharton School of the University of Pennsylvania.