BETHESDA, Md., Nov. 20, 2013 /PRNewswire/ -- Northwest Biotherapeutics, Inc. (NASDAQ: NWBO), a biotechnology company developing DCVax® personalized immune therapies for solid tumor cancers, announced today the pricing of 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. 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. (Logo: http://photos.prnewswire.com/prnh/20110329/SF73084LOGO) The offering is expected to close on November 25, 2013, subject to the satisfaction of customary closing conditions. Northwest has granted the underwriters a 30-day option to purchase up to 734,374 additional shares of common stock and/or additional warrants to purchase up to 367,187 shares of common stock to cover over-allotments, if any. Oppenheimer & Co. Inc. is acting as the sole book-running manager for the proposed offering. The securities described above are being 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 preliminary prospectus supplement and an accompanying prospectus relating to the offering will be filed with the SEC. Electronic copies of the preliminary prospectus supplement and the accompanying prospectus relating to the offering may be obtained, when available, 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. Before investing in the offering, interested parties should read in their entirety the prospectus supplement and the accompanying prospectus and the other documents that the company has filed with the SEC that are incorporated by reference in the prospectus supplement and the accompanying prospectus, which provide more information about the company and the offering.