Our Board
Industry experts providing governance oversight to ensure operational integrity
Abel Avellan
Mr. Avellan is AST’s Chairman, founder and Chief Executive Officer since its inception in 2017. Prior to founding AST, Mr. Avellan served as the founder and Chief Executive Officer of Emerging Markets Communications (EMC), a satellite-based communications services provider to maritime and other mobility markets, from 2000 until its sale for $550 million in July 2016. Mr. Avellan has over 25 years of success in the space industry and is an inventor on 24 U.S. patents. He was appointed as a Commissioner to the ITU/UNESCO Broadband Commission for Sustainable Development in 2024, named Satellite Teleport Executive of the Year in 2017, and received the Satellite Transaction of the Year award by Euroconsult in 2015. A proud United States citizen, Mr. Avellan resides in Florida with his family.
Luke Ibbetson
Luke Ibbetson has worked with Vodafone since 1996 and has led the Vodafone Group Research and Development organisation since 2013, which is responsible for all aspects of future research, including trials of emerging technologies. Mr. Ibbetson serves on the Board of several industry groups and initiatives, including the 5G Automotive Alliance, and serves as Chairman of the Next Generation Mobile Networks Alliance Board Strategy committee. Mr. Ibbetson holds a B.Sc. in electronic engineering and a M.Sc. in telecommunications from the University of Leeds.
Mickey (Hiroshi) Mikitani
Mickey (Hiroshi) Mikitani is the founder, chairman and CEO of Rakuten Group, Inc. Founded in Japan in 1997 with the mission to contribute to society by creating value through innovation and entrepreneurship, Rakuten has grown to become one of the world’s leading internet services companies.
Rakuten has a dynamic ecosystem of more than 70 services, spanning e-commerce, fintech, digital content and communications, bringing the joy of discovery to more than 1.7 billion members around the world. Rakuten also become Japan’s newest mobile network operator in 2019. In September 2017, Rakuten became the first-ever jersey partner of the NBA’s Golden State Warriors.
Born in Kobe, Mikitani was educated at Hitotsubashi University in Tokyo, began his career in investment banking, and earned his MBA at Harvard Business School. In 2012, he was awarded the HBS Alumni Achievement Award, one of the school’s highest honors.
Mikitani is also a recipient of the Legion of Honour, awarded by the French government in recognition of contributions to the economy and culture of France. In 2011, he was appointed Chairman of the Tokyo Philharmonic Orchestra, which has the longest history and tradition of any orchestra in Japan, and serves as Representative Director of the Japan Association of New Economy (JANE). Mikitani was appointed to the Board of Directors at AST SpaceMobile, Inc. in 2021.
He also serves as Vice Chairman and co-Chief Executive Officer of Rakuten Medical, Inc., a global biotechnology company developing precision, cell-targeting investigational therapies on its Alluminox™ platform.
Adriana Cisneros
Adriana Cisneros is CEO of Cisneros, a third-generation, family owned and operated business with a global footprint and operations in Latin America and the United States. The company has three areas of focus: Media, Interactive, and Real Estate.
Adriana is also president of Fundación Cisneros, the family’s educational not-for-profit organization dedicated to improving education in Latin America. Adriana is co-chair of Endeavor Miami, an organization that promotes high-impact entrepreneurship. She is a director and executive committee member of the Board of the International Academy of Television Arts & Sciences, and a trustee of the Paley Center for Media.
She is on the board of MoMA PS1 and MoMA’s Latin American Acquisitions Committee. Adriana is a Henry Crown Fellow, as well as a Term Member at the Council of Foreign Relations, and an Advisory Board Member of Wyncode.
Adriana is the daughter of Gustavo Cisneros, the company’s Chairman, and granddaughter of Diego Cisneros, who founded the business in 1929. She lives in Miami, Florida, where the company is headquartered, with her husband and two children. Adriana holds a BA from Columbia University (2002) and a Master’s Degree in journalism from New York University (2005). She is also a graduate of Harvard Business School’s Program for Leadership Development (PLD – 2010).
Chris Sambar
Christopher Sambar is a corporate executive with extensive leadership experience spanning Network & Technology Operations, Capital Planning, Sales and Distribution, Investor Relations, Human Resources, Communications, and Corporate Strategy.
Mr. Sambar currently serves as the Executive Vice President-Network. In this role he leads AT&T’s Global Network organization and teams responsible for technology architecture design, engineering, building, and operating AT&T’s next-generation mobile and fiber networks. His responsibilities include overseeing one of the world’s largest network infrastructure capital deployments (~$15B) as well as for the 24/7 global operations team ensuring service continuity for more than 100 million AT&T mobile and broadband customers, and millions of business customers.
Previously, Mr. Sambar was Executive Vice President – Technology Operations, responsible for long-term technology initiatives and global planning, construction and engineering of AT&T’s mobile, fiber and core network infrastructure build programs. He has also held senior executive positions in AT&T’s FirstNet, Business Solutions, Consumer Broadband, Retail, Human Resources, and Corporate Strategy teams.
Mr. Sambar serves on the Board for the National Medal of Honor Museum Foundation which is dedicated to honoring Medal of Honor recipients through the design, build, and maintaining of the museum, monument, and institute.
He holds an MBA from the University of Southern California and a Bachelor of Science degree from The United States Naval Academy. Following graduation from the Naval Academy, Mr. Sambar served 7 years on active duty and 16 years in the reserves (Navy SEAL) with multiple deployments throughout Europe, the Middle East and one tour of duty during the Iraq war in 2005 and 2006.
Ed Knapp
Ed Knapp is the corporate CTO for American Tower. He is responsible for leading the company’s global innovation program, technology investments and strategy.
Prior to joining American Tower in 2017, as Senior Vice President of Engineering at Qualcomm, Ed Knapp was responsible for their New Jersey Corporate Research Center from which he managed a diverse engineering team with researchers and product engineering staff across India, Israel and the US. Mr. Knapp has more than 38 years of communications technology experience with over 30 years invested in the development of the global wireless industry from 1G to 5G, including CxO leadership roles in three start-ups.
At Qualcomm, Ed established the FSMTM small cell product line and managed advanced R&D projects including mmW 5G, mobile and vehicular device to device (V2X) technology, localization technology as well as various licensed and unlicensed spectrum applications. Ed joined Qualcomm with the acquisition of OFDMA leading start-up Flarion Technologies in 2006. Before joining Flarion, Knapp was the chief technology officer of PacketVideo Corporation, a pioneer in delivering end-to-end multimedia software for streaming of MPEG4 video to mobile devices.
Prior to PacketVideo, Knapp co-founded and served as the senior vice president of engineering and chief technology officer of the MVNO operator NextWave Telecom, Inc. Mr. Knapp also served as the executive director of technical services for Bell Atlantic/NYNEX Mobile (Verizon Wireless) where he was responsible for design, buildout and operation of the New York Metro area 1G and 2G cellular system.
He received a master’s of business administration from Columbia University, his master’s of science degree in electrical engineering from Polytechnic University (NYU) in New York, and a bachelor’s degree in engineering from Stony Brook University. Ed currently has 5 granted US patents and 1 pending application.
Richard Sarnoff
Richard Sarnoff is a Partner at Kohlberg Kravis Roberts & Company (KKR) and leads its Media, Entertainment, and Education investing activities for US private equity. From 2014 through 2017, Mr. Sarnoff served as Managing Director and Head of the Media and Communications industry group for KKR, leading investments in the Media, Telecom, Digital Media and Education sectors in the US. Mr. Sarnoff currently serves on the Board of Directors of Chegg, Inc., and of several private companies for KKR, as well as a number of not-for-profit organizations. Mr. Sarnoff holds a B.A. in Art and Archeology from Princeton University and an M.B.A. from Harvard Business School.
Ronald Rubin
Ronald Rubin is the Co-Founder and Managing Director of Tower Alliance, LLC, a leading provider of outsourced services to wireless infrastructure owners. Mr. Rubin is also the Co-Founder and Managing Director of Southcom Holdings I, LLC, which oversees and implements wireless infrastructure investment and management strategies in Latin America. Mr. Rubin served as Chief Financial Officer of Global Tower Partners from 2010 to 2013. Mr. Rubin holds a B.S. in Accounting from American University and a M.S. in Taxation from Florida International University and is a Certified Public Accountant.
Julio A. Torres
Julio A. Torres has served as the managing partner at Multiple Equilibria Capital, a financial advisory firm since March 2013. Mr. Torres has served as the Chief Executive Officer and member of the Board of Directors of Andina Acquisition Corp. III, since January 2019. From August 2015 to March 2018, Mr. Torres served as Chief Executive Officer and a member of the Board of Directors of Andina Acquisition Corp. II, a special-purpose acquisitions company that consummated an initial business combination with Lazy Days’ R.V. Center, Inc. From October 2011 through January 2013, Mr. Torres served as Co-Chief Executive Officer of Andina Acquisition Corp. He also served as a member of the board of Andina 1 from October 2011 until its merger in December 2013 with Tecnoglass Inc. and has continued to serve on the board of Tecnoglass Inc. since such time. Mr. Torres also serves on the board of several international public companies. Mr. Torres graduated from the Universidad de los Andes and received an M.B.A. from the Kellogg Graduate School of Management at Northwestern University and a master’s in public administration from the J.F. Kennedy School of Government at Harvard University.
Johan Wibergh
Johan Wibergh is the former Chief Technology and Information Officer of Vodafone, a global telecommunications provider. He is a seasoned technology executive with over 35 years of experience in managing large-scale operations across the globe, having served in various C-suite positions with leading global companies for more than 15 years. He brings with him a wealth of experience in technology innovation and leadership in networking and telecommunications.
Mr. Wibergh’s career includes nearly 8 years as the Group Chief Technology Officer of Vodafone and 6.5 years as EVP & Head of Business Unit Networks for Ericsson. His leadership experience spans various areas such as telecoms networks, enterprise networks, digital and IT systems, cyber security, R&D, product management, operational excellence, and large-scale 24/7 operations.
Mr. Wibergh is a member of three American boards, Trimble Inc, Inception Holding (comprising Marconi and Avanci), and Cohere Technologies. He is also a member of the board of BCE Inc and Bell Canada, the largest telecommunications company in Canada. Mr Wibergh is a member of the Executive Advisory board of Arrcus Inc.
Mr Wibergh’s previous board experience includes Vantage Towers (2020-2022), KTH Royal Institute of Technology (2010-2016) and chairman of Next Generation Mobile Networks (2016-2018). He has also served on the advisory boards of IBM, HP Enterprises and Amdocs. Mr. Wibergh has a Masters in Computer Science and Engineering from Linkoping University, Sweden.