Effective August 6, 2008, the stock name "Sirius Satellite Radio Inc." will change to "Sirius XM Radio Inc." and the Cusip number "82966U103" will change to "82967N108."
SIRI1C will stay the same.
CME Clearing Code SI remains the same.
This action will be coordinated with the Options Clearing Corporation.
If you have any questions regarding the information provided in the document, pelase call the CME Clearing Risk Management hotline at (312) 648-3888.