Dynavax Announces Proposed Public Offering of Common Stock 
  BERKELEY, CA, May 08, 2012 (MARKETWIRE via COMTEX) -- Dynavax Technologies  Corporation (DVAX) today announced that it intends to offer and sell shares of  its common stock, subject to market and other conditions, in an underwritten  public offering. Dynavax also expects to grant the underwriters a 30-day option  to purchase additional shares of its common stock to cover over-allotments, if  any. All of the shares in the offering are being offered by Dynavax. 
  J.P. Morgan Securities LLC is acting as sole book-running manager for the  offering. Cowen and Company, LLC is acting as co-manager. 
  The securities described above are being offered by Dynavax pursuant to two shelf  registration statements previously filed with and declared effective by the  Securities and Exchange Commission (the "SEC"). Preliminary prospectus  supplements related to the offering will be filed with the SEC and will be  available on the SEC's website located at sec.gov. Copies of the  preliminary prospectus supplements and the accompanying prospectuses relating to  this offering, when available, may be obtained from J.P. Morgan Securities LLC,  c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York  11717, or by telephone at 1-866-803-9204.  |