Age: 88 Director since: December 2008 Public Company Directorships: Shaw Communications Inc. (from July 2010 to April 2023) Liberty Broadband Corporation (since November 2014) GCI Liberty, Inc. (since July 2025) Other Positions: The Cable Center (honorary board member) Federal Communications Commission s Technical Advisory Council (member) Space Science Institute (director) Jones/NCTI, Inc. (director) Society of Motion Pictures and Television Engineers (fellow) Center for Medical Interoperability (director) For over 20 years, Mr. Green served as president and chief executive officer of Cable Television Laboratories, Inc., a non-profit cable television industry research and development consortium ( CableLabs ) before retiring in December 2009. While at CableLabs , Mr. Green oversaw the development of DOCSIS technology, the establishment of common specifications for digital voice and the deployment of interactive television, among other technologies for the cable industry. Prior to joining CableLabs , he was a senior vice president at PBS (1984 1988), where he was instrumental in establishing PBS as a leader in high-definition television and digital audio transmission technology, and served as a director of CBS Advanced Television Technology Laboratory (1980 1983), where he managed and produced the first high-definition television programs in December 1981, among other accomplishments. Mr. Green is the author of over 55 technical papers on a variety of topics. Mr. Green was previously a professor and the director of the Center for Technology Innovation at the University of Denver. Mr. Green s extensive professional and executive background and his particular knowledge and experience in the complex and rapidly changing field of technology for broadband communications services contribute to our board s evaluation of technological initiatives and challenges and strengthen our board s collective qualifications, skills and attributes.