HAYWARD, CA -- (MARKET WIRE) -- November 06, 2006 -- The Board of Directors of Aradigm Corporation (NASDAQ: ARDM) today announced the appointment of John M. Siebert, Ph.D. to the Board of Directors. Dr. Siebert is currently the Chairman and CEO of CyDex, a privately-held company that has been successfully out-licensing its substituted cyclodextrin technology for use in drug development and formulation to a number of major pharmaceutical companies. CyDex also uses that technology to develop proprietary products which are out-licensed or may be brought to market by CyDex in the future.