Paris, France – January 24, 2011 – Sanofi-aventis (EURONEXT: SAN and NYSE: SNY) announced today that it has extended its tender offer for all outstanding shares of common stock of Genzyme Corporation (Nasdaq: GENZ) at $69.00 per share, net to the seller in cash, without interest and less any required withholding taxes. The tender is now scheduled to expire at 11:59 p.m., New York City time on February 15, 2011 unless it is further extended. The tender offer was previously scheduled to expire at 11:59 p.m., New York City time on January 21, 2011. All other terms and conditions of the tender offer remain unchanged.
January 24, 2011