Mike Sievert
Chief Executive Officer
Chief Executive Officer
Executive Vice President, Transformation and Chief Information and Digital Officer
President of Technology
President, Business Group
President, Consumer Group
Executive Vice President & Chief Communications & Corporate Responsibility Officer
President, Marketing, Strategy and Products
Executive Vice President & Chief People Officer
Executive Vice President, Financial Planning & Analysis
Executive Vice President & General Counsel
Executive Vice President & Chief Financial Officer
Executive Vice President & Chief Technology Officer
Executive Vice President & Chief Product Officer
Timotheus Höttges has served as a director of
Mr. Höttges studied Business Administration at the University of Cologne.
Raphael Kübler has served as a director of
Mr. Kübler studied Business Administration at H.E.C. in Paris and the Universities of Bonn and Cologne. He holds a doctoral degree from the University of Cologne.
André Almeida has served as a director of
Mr. Almeida holds a Bachelor’s degree in Industrial Management Engineering from the Instituto Superior Técnico in Lisbon and a Master of Business Administration degree from Institut Européen d’Administration des Affaires.
Thorsten Langheim has served as a director of
Prior to that, from 2009 to December 2018, he first served as Senior Vice President of Corporate Development and then as Executive Vice President Group Development at Deutsche Telekom. Prior to his roles at Deutsche Telekom, Mr. Langheim was Managing Director at the Private Equity Group of The Blackstone Group, an asset management and financial services company, from May 2004 to June 2009, primarily focusing on private equity investments in Germany. Before that, Mr. Langheim was Investment Banker and Vice President of European M&A at J.P. Morgan in London and Assistant Director at WestLB in Düsseldorf between 1995 and 2004.
Mr. Langheim is a member of the Supervisory Board of Deutsche Sporthilfe and FC Bayern München AG as well as Chairman of Deutsche Funkturm. Mr. Langheim holds a Master of Science degree in International Securities, Investment, and Banking from the ISMA Centre for Education and Research at the University of Reading (United Kingdom) and a Bachelor’s degree (Hons) in European Finance and Accounting from the University of Bremen (Germany) and Leeds Business School (United Kingdom).
Marcelo Claure has served as a director of
Through his investment firm, Claure Group, Mr. Claure provides strategic capital and expertise to many of his portfolio companies’ and funds’ management teams, including SHEIN, the fastest growing on-demand fashion company globally, where he is Group Vice Chairman; Bicycle Capital, Latin America’s leading growth equity fund; Open Opportunity Fund, a fund supporting Black and Hispanic tech founders in the US; and eB Capital, a Brazil-focused investment platform.
Additionally, Mr. Claure is the Co-Chair of Digital Data Design (D^3) Institute at Harvard Business School, an organization which focuses on shaping the future of business and society through digital and AI-driven business initiatives. Mr. Claure served as the Chief Executive Officer of SoftBank International and the Chief Operating Officer of SoftBank from May 2018 until January 2022. In addition, Mr. Claure served as a director of SoftBank from 2017 to 2020. He was also Executive Chairman of WeWork from October 2019 until January 2022. Previously, Mr. Claure served as Sprint’s President and Chief Executive Officer, serving as President from August 2014 until January 2018 and as Chief Executive Officer from August 2014 until May 2018. Mr. Claure was Executive Chairman of Sprint prior to the Sprint Combination and served on the Sprint board of directors. Prior to joining Sprint, Mr. Claure was Chief Executive Officer of Brightstar Corp., a company he founded in 1997 and grew from a small Miami-based distributor of mobile device accessories into a global business with more than $10 billion in gross revenue for the year ended 2013.
Mr. Claure received a B.S. in Economics and Finance and an honorary Doctorate of Commercial Science from Bentley University. He also received an honorary Doctorate of Laws from Babson College. He is also an Executive Fellow at Harvard Business School.
Dominique Leroy has served as a director of
She holds a Master’s degree in Commercial Engineering and Management from the Solvay Business School in Brussels.
Srikant M. Datar has served as a director of
Mr. Datar holds a Master's degree in Statistics and Economics and a Ph.D. in Business from Stanford University.
Letitia A. Long has served as a director of
Ms. Long received her Bachelor of Science in Electrical Engineering from Virginia Polytechnic Institute and State University and her Master of Science in Engineering from The Catholic University of America.
Srinivasan Gopalan has served as a director of
Mr. Gopalan studied Business Administration at St. Stephen’s College in New Delhi, India and later received a Master of Business Administration at Indian Institute of Management Ahmedabad in Ahmedabad, India.
Mike Sievert is president and chief executive officer of
He most recently served as president and chief operating officer of
Mike has been actively involved in all of
Mike also serves on the board of directors of Shaw Communications in Canada. Prior to joining the Un-carrier, Mike had a nearly 25-year career in marketing, technology, and entrepreneurship. Over the years, he has served in various roles, including EVP and chief sales and marketing officer at E*TRADE, EVP and chief marketing officer at AT&T Wireless, and corporate vice president of the Windows Business Group at Microsoft.
He started his career in marketing at Procter & Gamble and IBM. He’s an avid aviator and mariner, and an enthusiastic supporter of conservation and the environment—especially in his adopted home of the Pacific Northwest. He’s a proud husband and father to two boys in their 20s. Mike owes his success to daily doses of a perfectly crafted dark roast French press, the source of all his earthly power.
Dr. Christian P. Illek has served as a director of
Dr. Illek studied chemistry and business administration in Düsseldorf and Munich, beginning his career at the University of Munich in 1989.
Teresa A. Taylor has served as a director of
Teresa received a Bachelor of Science degree from the University of Wisconsin-LaCrosse.
James J. Kavanaugh has served as a director of
Kelvin R. Westbrook has served as a director of
Mr. Westbrook is President and Chief Executive Officer of KRW Advisors, LLC, a consulting and advisory firm, a position he has held since October 2007. Mr. Westbrook also served as Chairman and Chief Strategic Officer of Millennium Digital Media Systems, L.L.C. ("MDM"), a broadband services company that later changed its name to Broadstripe LLC, from September 2006 until October 2007. Mr. Westbrook was also President and Chief Executive Officer of MDM from May 1997 until October 2006. He also currently serves on the boards of directors of Archer Daniels Midland Company, Camden Property Trust, and The Mosaic Company. He has previously served on the board of directors of Stifel Financial Corp. from 2007 to 2018.
Mr. Westbrook holds an undergraduate degree in Business Administration from the University of Washington and a Juris Doctor degree from Harvard Law School.