Meet the board of directors.

Question 1

Timotheus Höttges | Chairman of the Board

Accepted Answer

Timotheus Höttges has served as a director of T-Mobile and chairman of the board since April 30, 2013, and is a member and chair of the Executive Committee of T-Mobile’s Board of Directors. Since January 2014, Timotheus has served as chief executive officer of Deutsche Telekom, T-Mobile’s majority stockholder and a leading integrated telecommunications company. From March 2009 to December 2013, he served as Deutsche Telekom’s chief financial officer (CFO) and a member of the board of management. From December 2006 to March 2009, he was a member of the board of management responsible for the T-Home Unit (fixed-network and broadband business, as well as integrated sales and service in Germany). From January 2003 to December 2006, Timotheus headed European operations as a member of the board of management of T-Mobile International. Timotheus also currently serves on the boards of directors of Henkel AG & Co. KgaA and BT Group plc. Timotheus studied business administration at the University of Cologne.

Question 2

Marcelo Claure

Accepted Answer

Marcelo Claure became a member of our board of directors and compensation committee on April 1, 2020. He serves as chief executive officer of SoftBank Group International and chief operating officer of SoftBank Group Corp. SoftBank Group invests in the world’s most innovative companies that leverage artificial intelligence (AI) to redefine all industries to improve people’s quality of life. SoftBank Group is comprised of SoftBank Group Corp., a holding company with a portfolio spanning across multiple sectors including telecommunications, internet service providers, AI, asset fund managers, smart robotics, IoT, and renewable energy technology providers, among others; the SoftBank Vision Fund, the world’s largest technology growth venture fund investing up to $100 billion to power the AI revolution; and the SoftBank Latin America Fund, the largest venture fund ever in Latin America, investing $5 billion in technology-growth opportunities throughout the region. Claure, alongside Masayoshi Son, the chairman and CEO, oversees the strategic direction of the Tokyo-based company. His primary responsibilities include ensuring Group companies and investments meet their financial and operating objectives, and managing global Group synergies, joint ventures, and corporate functions. Claure oversees the vast portfolio of Group’s operating companies, including Arm, WeWork, Brightstar, Fortress, SB Energy, Boston Dynamics, among others, and SoftBank’s ownership in T-Mobile USA. He also oversees the newly formed SoftBank Latin America organization, comprised of the SoftBank Latin America Fund and the Tech Hub, which is responsible for taking Group companies and investment companies into Latin America. In addition, Claure serves as executive chairman of WeWork, the world’s largest coworking and space-as-a-service company, where Claure is responsible for overseeing the company’s long-term strategy and growth-led transformation. Claure was also the executive chairman of Sprint prior to the Sprint and T-Mobile merger and had served on the Sprint board of directors since January 2014. Prior to that, 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. He is widely recognized for delivering the best financial results in Sprint’s 120-year history and architecting the merger with T-Mobile. Claure was the founder of Brightstar and built it into the world’s largest global wireless distribution and services company, with operations in more than 50 countries and revenues exceeding $10 billion. Brightstar became the largest Hispanic-owned business in United States history. Claure is a member of the board of directors of SoftBank and ARM Limited and serves as executive chairman of WeWork, chairman of Fortress, chairman of SB Energy Global, and executive chairman of Brightstar. He also runs Club Bolivar, Bolivia’s most popular and successful soccer team and is chairman and owner of Club Internacional de Futbol Miami (Miami Beckham United), the newest major league soccer franchise. Claure was named a Young Global Leader by the World Economic Forum, recognized as the Entrepreneur of the Year by several publications, and was appointed to Ernst & Young’s Entrepreneur of the Year Hall of Fame. He was featured in the Carnegie Corporation of New York’s “Great Immigrants: The Pride of America” initiative, recognizing notable contributions by immigrants to the progress of American society.

Claure immigrated to the United States from Bolivia. He received a Bachelor of Science in economics and finance and an honorary Doctorate of Commercial Science from Bentley University. He is a member of the 2016 Class of Henry Crown Fellows and Aspen Global Leadership Network at the Aspen Institute. He is also a member of the Presidential CEO Advisory Board of MIT. Claure is married and has six children.

Question 3

Srikant M. Datar

Accepted Answer

Srikant M. Datar has served as a director of T-Mobile since April 30, 2013 and is a member and chair of the Audit Committee of T-Mobile's Board of Directors. Srikant is the Arthur Lowes Dickinson Professor at the Graduate School of Business Administration at Harvard University. Srikant is a chartered accountant and planner in industry, and has been a professor of accounting and business administration at Harvard since July 1996, and he previously served as a professor at Stanford University and Carnegie Mellon University. Srikant currently serves on the board of directors of Novartis AG, where he is also the chairman of the audit and compliance committee, and a member of the chairman's committee, the risk committee, and the compensation committee. Srikant is also a member of the boards of directors of ICF International Inc., where he is a member of the corporate governance and nominating committee; Stryker Corporation, where he is a member of the audit and finance committees; and HCL Technologies, where he is a member of the compensation committee.
Srikant received gold medals upon his graduation from the Indian Institute of Management, Ahmedabad, and the Institute of Cost and Works Accountants of India. Srikant received a master's in statistics and economics and a Ph.D. in business from Stanford University. Srikant's individual qualifications and skills that led to the conclusion that he should serve as a director include his service on boards of international companies, his substantial teaching and practical experience in accounting, governance, and risk management, and his academic and broad-based knowledge and experience of strategy, business, and finance.

Question 4

Lawrence H. Guffey

Accepted Answer

Lawrence H. Guffey has served as a director of T-Mobile April 30, 2013, and is a member of the Compensation Committee, Executive Committee, and Nominating and Corporate Governance Committee of T-Mobile’s Board of Directors. Lawrence was previously a senior managing director (partner) in the private equity group at The Blackstone Group where he worked for 22 years, the last 10 of which as one of the firm’s senior partners in Europe. Lawrence was made a partner of The Blackstone Group in 2000 at the age of 31. During his tenure as a partner at The Blackstone Group, Lawrence led or co-led many of the firm’s media and communications-related investments and had day-to-day responsibility for management of Blackstone Communications Advisors. Lawrence was a member of the supervisory board at Deutsche Telekom, T-Mobile’s majority stockholder, from June 2006 until October 2013. He was a director of New Skies Satellites Holdings Ltd. from January 2005 to December 2007, Axtel SA de CV since October 2000, FiberNet L.L.C. from 2001 until 2003, iPCS Inc. from August 2000 to September 2002, PAETEC Holding Corp. from February 2000 to 2002, and Commnet Cellular Inc. from February 1998 to December 2001. Lawrence also served as a director of TDC A/S from February 2006 to March 2013.

He holds a Bachelor of Arts magna cum laude degree from Rice University, where he was elected to Phi Beta Kappa. Lawrence’s individual qualifications and skills that led to the conclusion that he should serve as a director include his extensive experience on other company boards, particularly those of other companies in the telecommunications industry—including Deutsche Telekom, a leading integrated telecommunications company.

Question 5

Dr. Christian P. Illek

Accepted Answer

Dr. Christian P. Illek has served as the chief financial officer of Deutsche Telekom, T-Mobile’s majority stockholder and a leading integrated telecommunications company, since January 2019. Since April 2015, he has served as chief human resources officer and member of the management board of Deutsche Telekom. Christian has also served as chairman of supervisory board for T-Systems International GmbH since November 2016 (a subsidiary of Deutsche Telekom). Prior to that, he was chairman of management board at Microsoft Germany from September 2012 to March 2015. From April 2010 to September 2012, he was director of marketing at Telekom Deutschland GmbH. In this position, he was responsible for all marketing activities for both consumers and business customers in Germany. He was also in charge of the Wholesale Center and the Value-Added Services Center, as well as international product development for Deutsche Telekom’s fixed-network, IPTV, convergent and business customer portfolio. Before joining Deutsche Telekom, Christian held various managerial positions at Bain & Company and at Dell, in both Germany and in Switzerland.

He studied chemistry and business administration in Düsseldorf and Munich, beginning his career at the University of Munich in 1989.

Question 6

Raphael Kübler

Accepted Answer

Raphael Kübler has served as a director of T-Mobile since April 30, 2013, and is a member of the Compensation Committee and Executive Committee of T-Mobile’s Board of Directors. In January 2014, Mr. Kübler assumed the position of senior vice president of the corporate operating office of Deutsche Telekom, T-Mobile’s majority stockholder and a leading integrated telecommunications company, and reports directly to the chief executive officer of Deutsche Telekom. From July 2009 to December 2013, Raphael served as a senior vice president of group controlling at Deutsche Telekom. In this position, he was responsible for the financial planning, analysis, and steering of the overall Deutsche Telekom Group as well as the financial management of central headquarters and shared services. From November 2003 to June 2009, Raphael served as chief financial officer of T-Mobile Deutschland GmbH, the mobile operations of Deutsche Telekom in Germany now known as Telekom Deutschland GmbH (a wholly owned subsidiary of Deutsche Telekom). Raphael also currently serves on the board of directors of Ströer SE & Co. KGaA and he has previously served on the board of directors of Hellenic Telecommunications Organization (OTE) from 2013 to 2018.

Raphael 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.

Question 7

Thorsten Langheim

Accepted Answer

Thorsten Langheim has served as a director of T-Mobile since April 30, 2013 and is a member of the Nominating and Corporate Governance Committee and Executive Committee of T-Mobile’s Board of Directors. Thorsten joined the board of management of Deutsche Telekom, T-Mobile’s majority stockholder and a leading integrated telecommunications company, on January 1, 2019, where he is responsible for the “USA and Group Development” board department, overseeing Deutsche Telekom’s U.S. business as well as corporate development, portfolio strategy, and group M&A activities. This includes overseeing Deutsche Telekom’s 12% stake in BT Group as well as the management of Deutsche Telekom’s subsidiaries T-Mobile Netherlands and Deutsche Funkturm. In addition, Thorsten also serves as the chairman and co-founder of Deutsche Telekom Capital Partners, where he is responsible for the venture capital and private equity activities of Deutsche Telekom. Prior to that, from 2009 to December 2018, he first served as senior vice president of corporate development and then as executive vice president of group development at Deutsche Telekom. Prior to his roles at Deutsche Telekom, Thorsten 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, Thorsten 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. Thorsten is a member of the supervisory board of Deutsche Sporthilfe as well as chairman of T-Mobile Netherlands and Deutsche Funkturm.

Thorsten 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 and a bachelor’s degree (Hons) in European finance and accounting from the University of Bremen (Germany) and Leeds Business School (United Kingdom).

Question 8

Dominique Leroy

Accepted Answer

Since November 2020, Ms. Leroy has served as a member of the Board of Management of Deutsche Telekom AG. She is responsible for the Board Area Europe. Ms. Leroy has over 30 years of experience in the consumer goods and telecommunication sector. She started her career at Unilever where her last position was Managing Director for Belgium and Luxembourg. In 2011 she joined Proximus (formerly Belgacom) where she quickly became Head of the Consumer Market and held the position of CEO from 2014 to 2019. During this time she managed to turn around the company with a continuous growth phase and a strong customer experience focus. From November 2019 to November 2020, she served as an independent advisor at Bain & Company. Ms. Leroy currently serves as a director at Royal Ahold Delhaize and Compagnie de Saint Gobain. In addition, she has more than 10 years of Board experience, having been a Board Member at Lotus Bakeries, Proximus, and BICS. She holds a Master?s degree in Industrial Engineering and Management from the Solvay Business School in Brussels.

Question 9

Mike Sievert

Accepted Answer

Mike Sievert is president and chief executive officer of T-Mobile and is a member of T-Mobile’s Board of Directors. Mike leads a customer-crazed team of disruptors and innovators, working tirelessly over the last seven years to change the rules of wireless, resulting in T-Mobile becoming the fastest-growing company in its space.

He most recently served as president and chief operating officer of T-Mobile. As president and chief executive officer, Mike is responsible for leading T-Mobile into the 5G future as it joins forces with Sprint to supercharge the successful Un-carrier strategy. His focus will center around unlocking the potential of the combined companies’ increased scale, which is expected to result in over $43 billion in synergies, create lower costs, and offer the ability to deliver better services at lower prices for consumers. A centerpiece of that focus will be the transformational nationwide 5G network that the T-Mobile team is building. It will deliver massive increases in network capacity, drive innovation, and enable consumers to get both a better value and a better network. Mike and his team will continue to cultivate T-Mobile’s culture that is world-famous for putting customers first, treating them right, and changing the rules in their favor—with the goal of creating the most loved brand in the history of the telecom industry.

Mike has been actively involved in all of T-Mobile’s significant corporate decisions since he joined T-Mobile in 2012 as chief marketing officer and since he became COO in 2015. In 2018, he joined the board of directors and was appointed president of the company. Prior to being CMO at T-Mobile, Mike joined Clearwire Corporation, now part of T-Mobile, in 2009, serving as EVP and chief commercial officer. Mike has been instrumental in building T-Mobile’s purpose-driven strategy to address customer pain points, an approach that has been the foundation for T-Mobile’s unprecedented growth over the past seven years. He worked alongside prior CEO John Legere since 2012, transforming T-Mobile into the enormously successful Un-carrier. He also worked very closely with John Legere in directing the approval and integration efforts for the merger with Sprint, to create the new T-Mobile. In addition, Mike has been extensively involved in shaping T-Mobile’s internal customer-obsessed Un-carrier culture and is building on a company culture that encourages communication, diversity, opportunity, collaboration, and transparency—all of which are vital to T-Mobile remaining a disruptive force in the wireless industry.

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.

Question 10

Teresa A. Taylor

Accepted Answer

Teresa A. Taylor has served as a director of T-Mobile since April 30, 2013 and has been T-Mobile’s lead independent director since May 1, 2013. Teresa is also a member and chair of the Nominating and Corporate Governance Committee of T-Mobile’s Board of Directors, and is also a member of the Audit Committee of T-Mobile’s Board of Directors. Teresa was the chair of T-Mobile’s Compensation Committee from May 1, 2013 to June 12, 2018. Teresa served as chief operating officer of Qwest Communications, Inc., a telecommunications carrier, from August 2009 to April 2011. She served as Qwest’s executive vice president of business markets group, from January 2008 to April 2009 and served as their executive vice president and chief administrative officer from December 2005 to January 2008. Teresa served in various positions with Qwest and the former US West beginning in 1987. During her 24-year tenure with Qwest and US West, she held various leadership positions and was responsible for strategic planning and execution, sales, marketing, product, network, information technology, human resources, and corporate communications. Teresa also is a director of First Interstate BancSystem, Inc., where she serves as chair of the compensation committee, Black Hills Corporation and NiSource, Inc.

Teresa received a Bachelor of Science degree from the University of Wisconsin-LaCrosse. Her individual qualifications and skills that led to the conclusion that she should serve as a director include her extensive experience in the technology, media, and telecommunications sectors, including her knowledge regarding strategic planning and execution, technology development, human resources, labor relations, and corporate communications.

Question 11

Omar Tazi

Accepted Answer

Mr. Tazi is currently Senior Vice President at Deutsche Telekom AG in charge of Group Innovation, Products, Design & Customer Experience, as well as Global Partnerships and Devices. Prior to joining Deutsche Telekom in January 2018, he founded several fintech, e-commerce, and big data ventures focusing on MEA markets. Previously, Mr. Tazi was with Orange as Executive Vice President in charge of various areas including consumer marketing, information systems & customer experience. Prior to that, he was Oracle's chief evangelist where he was in charge of building and scaling developer communities and promoting Oracle platforms globally. Before that, he was CEO of Orbeon, a Silicon Valley-based company specializing in middleware for form-based applications. Mr. Tazi has also held several other senior management positions in Silicon Valley including at Symantec and WebGain (later acquired by Oracle). He has held several research and teaching positions at the Swiss Federal Institute of Technology (ETH - EPFL), in the fields of Artificial Intelligence (AI) and Computer Science. He is a Stanford Graduate School of Business alumnus and holds a Master of Science degree in Computer Science & Electrical Engineering from Polytech Montpellier.

Question 12

Kelvin R. Westbrook

Accepted Answer

Kelvin R. Westbrook has served as a director of T-Mobile since April 30, 2013, is a member and chair of the Compensation Committee of T-Mobile's Board of Directors, and is a member of the Audit Committee of T-Mobile's Board of Directors. Kelvin was the chair of T-Mobile's Nominating and Corporate Governance Committee from May 1, 2013 to June 12, 2018.

Kelvin is president and chief executive officer of KRW Advisors, LLC, a consulting and advisory firm, a position he has held since October 2007. Kelvin 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. Kelvin was also president and chief executive officer of MDM from May 1997 until October 2006. Broadstripe LLC (formerly MDM) and certain of its affiliates filed voluntary petitions for reorganization under Chapter 11 of the U.S. Bankruptcy Code in January 2009, approximately 15 months after Kelvin resigned. 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.

Kelvin holds an undergraduate degree in business administration from the University of Washington and a Juris Doctor degree from Harvard Law School.

Question 13

Michael Wilkens

Accepted Answer

Mr. Wilkens has served as Senior Vice President Group Controlling (FP&A) of Deutsche Telekom since October 2013. He joined Deutsche Telekom in 2001 and has since held various senior management positions in finance, as well as in international sales and marketing; he worked in Germany, Austria, UK and Poland. Mr. Wilkens is a member of the Board of Directors of the French/German Joint Venture BUYIN and rolling chairman of its finance committee, as well as member of the Board of Directors of Hellenic Telecommunications Organization (OTE) and a member of the Board of Directors of T-Mobile Netherlands B.V. Additionally, he is a member in Advisory Boards of T-Mobile Netherlands and Deutsche Telekom's Tower-Co business . Prior to his career at Deutsche Telekom, he held senior positions in finance at E-Plus Mobilfunk GmbH and Debitel AG in Germany. Mr. Wilkens holds a Bachelor of Arts (with honors) in Finance and Accounting from Hochschule Bremen and Leeds Metropolitan University.

Meet T-Mobile's executives.

Mike Sievert

N éstor Cano

Dow Draper

Peter A. Ewens

Callie Field

Jon Freier

Janice V. Kapner

Michael J. Katz

Deeanne King

Susan Loosmore

David A. Miller

Peter Osvaldik

Neville R. Ray

Abdul Saad

John Saw

Matt Staneff