Cerus Corporation (NASDAQ: CERS) today announced the pricing of an underwritten public offering of 8,333,333 shares of its common stock, offered at a price to the public of $4.20 per share. The gross proceeds to Cerus from this offering are expected to be approximately $35.0 million, before deducting the underwriting discount and other estimated offering expenses payable by Cerus. The offering is expected to close on or about March 19, 2013, subject to customary closing conditions. In addition, Cerus has granted the underwriters a 30-day option to purchase at the public offering price up to an aggregate of 1,250,000 additional shares of its common stock to cover overallotments, if any. Cerus anticipates using the net proceeds from the offering for clinical development and other research and development activities related to the INTERCEPT Blood System, preparatory activities for the potential commercialization of the INTERCEPT Blood System in the United States and elsewhere, and for other general corporate purposes, including regulatory activity, selling, general and administrative expenses and working capital. Cerus may also use a portion of the net proceeds from the offering to prepay the remaining outstanding indebtedness under its growth capital loan with Comerica Bank. Cowen and Company, LLC is acting as sole book-running manager for the offering. Robert W. Baird & Co. Incorporated, Wedbush PacGrow Life Sciences and Lazard Capital Markets LLC are acting as co-managers for the offering. Blueprint Life Science Group, LLC and MLV & Co. LLC are acting as Cerus’ financial advisors in connection with the offering. The securities described above are being offered by Cerus pursuant to a shelf registration statement previously filed with and declared effective by the Securities and Exchange Commission (the “SEC”). A final prospectus supplement related to the offering will be filed with the SEC and will be available on the SEC’s website located at http://www.sec.gov. Copies of the final prospectus supplement and the accompanying prospectus relating to this offering, when available, may be obtained from Cowen and Company, LLC, c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, New York 11717, Attn: Prospectus Department, or by calling 631-274-2806, or by faxing 631-254-7140. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.