RADNOR, Pa., March 7, 2013 (GLOBE NEWSWIRE) -- PolyMedix, Inc. (OTCBB:PYMX), a biotechnology company developing small-molecule drugs designed to mimic the activity of host defense proteins (HDPs) for the treatment of infectious diseases and innate immune disorders, today announced that it plans to raise approximately $25 million through a public offering of its common stock. The company intends to grant the underwriters a 45-day option to purchase up to 15% in additional shares to cover over-allotments, if any. The offering is subject to market and other 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.