Optimer Pharmaceuticals, Inc. Prices Public Offering of Common Stock

Optimer Pharmaceuticals, Inc. OPTR today announced the pricing of a previously announced underwritten public offering of 6,000,000 shares of its common stock, offered at a price to the public of $11.25 per share. The gross proceeds to Optimer from this offering are expected to be $67.5 million, before deducting the underwriting discounts and commissions and other estimated offering expenses payable by Optimer. The offering is expected to close on or about February 16, 2011, subject to customary closing conditions.