Meet the board of directors.
Timotheus Höttges | Chairman of the Board
Timotheus Höttges has served as a director of
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.
Marcelo Claure has served as a director of
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.
Srikant M. Datar
Srikant M. Datar has served as a director of
Mr. Datar received a Master's degree in Statistics and Economics and a Ph.D. in Business from Stanford University.
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.
Dr. Christian P. Illek
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.
James J. Kavanaugh
James J. Kavanaugh has served as a director of
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.
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).
Dominique Leroy has served as a director of
She holds a Master’s degree in Industrial Engineering and Management from the Solvay Business School in Brussels.
Letitia A. Long
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.
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.
Teresa A. Taylor
Teresa A. Taylor has served as a director of
Teresa received a Bachelor of Science degree from the University of Wisconsin-LaCrosse.
Kelvin R. Westbrook
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.