BETHESDA, Md., Nov. 25, 2013 /PRNewswire/ -- Northwest Biotherapeutics, Inc. (NASDAQ: NWBO), a biotechnology company developing DCVax® personalized immune therapies for solid tumor cancers, has completed an underwritten public offering of 4,895,834 units at a public offering price of $4.80 per unit, resulting in gross proceeds of $23,500,000. Northwest also announced today that the underwriter has exercised in full its option to purchase an additional 734,374 units to cover over-allotments. Exercise of the over-allotment option increases the gross proceeds to the Company to $27,025,000. (Logo: http://photos.prnewswire.com/prnh/20110329/SF73084LOGO) Each unit consists of one share of common stock, and a warrant to purchase 0.5 shares of common stock at an exercise price of $6.00 per share. The warrants are immediately exercisable and expire on the fifth anniversary of the date of issuance. The shares of common stock and warrants are immediately separable and will be issued separately. Oppenheimer & Co. Inc. served as the sole book-running manager for the offering. The securities described were offered pursuant to a shelf registration statement (File No. 333-185898), which was declared effective by the United States Securities and Exchange Commission ("SEC") on February 5, 2013. A prospectus supplement and an accompanying prospectus relating to the offering was filed with the SEC. Electronic copies of the prospectus supplement and the accompanying prospectus relating to the offering may be obtained from Oppenheimer & Co. Inc., Attention: Syndicate Prospectus Department, 85 Broad Street, 26 th Floor, New York, NY 10004, or by telephone at (212) 667-8563, or by email at EquityProspectus@opco.com, or by accessing the SEC's website at www.sec.gov. About Northwest Biotherapeutics Northwest Biotherapeutics is a biotechnology company focused on developing immunotherapy products to treat cancers more effectively than current treatments, without toxicities of the kind associated with chemotherapies, and on a cost-effective basis, in both the United States and Europe.