Canadian Broadcasting Corporation | Australian Broadcasting Corporation | Oracle Corporation | International Finance Corporation | Chevron Corporation | Digital Equipment Corporation | Comcast | News Corporation | Lockheed Corporation | corporation | Hearst Corporation | Scholastic Corporation | Northrop Corporation | Munhwa Broadcasting Corporation | Gibson Guitar Corporation | CBS Corporation | Fender Musical Instruments Corporation | ITT Corporation | Sharp Corporation | RAND Corporation | NCR Corporation | Federal Deposit Insurance Corporation | Sperry Corporation | Singer Corporation | Case Corporation | Science Applications International Corporation | Polaroid Corporation | Multinational corporation | Burroughs Corporation | Bendix Corporation |
Clarke worked as the Senior Advisor of Communications and Government Relations for Comcast Corporation before moving to SAP AG to take the role of Head of Corporate Affairs.
A large percentage of Clearwire shares were previously owned by a number of large companies including Sprint Nextel Corporation (now Sprint Corporation), Comcast Corporation, Time Warner Cable Inc., Bright House Networks, LLC, Google Inc. and Intel Corporation.