BioSante to offer and sell shares of common stock in an underwritten public offering

BioSante Pharmaceuticals, Inc. (NASDAQ: BPAX) today announced that it intends to offer and sell shares of its common stock in an underwritten public offering. All of the shares in the offering will be sold by BioSante. The offering is subject to market conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering. The shares will be offered pursuant to a shelf registration statement on Form S-3 that was previously declared effective by the Securities and Exchange Commission (SEC).

Jefferies & Company, Inc. is acting as the sole book-running manager for the proposed offering.