REDWOOD CITY, Calif., March 11, 2011 (GLOBE NEWSWIRE) -- Threshold Pharmaceuticals, Inc. (Nasdaq:THLD), today announced that it has agreed to sell approximately $30 million of its common stock and warrants in a registered direct offering. Threshold will issue an aggregate of 14,313,081 shares of common stock to investors together with warrants to purchase an additional 5,725,227 shares of common stock.