HAYWARD, Calif., July 18, 2012 /PRNewswire/ -- Anthera Pharmaceuticals, Inc.(Nasdaq: ANTH), today announced that it intends to offer and sell shares of its common stock in an underwritten public offering. The Company expects to grant the underwriters a 30-day option to purchase up to an additional 15% of the shares of common stock offered in the public offering to cover over-allotments, if any. The Company intends to use the net proceeds from the offering for general corporate purposes. The offering is subject to market 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. Piper Jaffray & Co. and Leerink Swann LLC are acting as joint book-running managers in the offering. The securities described above are being offered by the Company pursuant to a shelf registration statement previously filed with, and declared effective by, the Securities and Exchange Commission (the "SEC"). A preliminary prospectus supplement relating to the offering will be filed with the SEC and will be available on the SEC's website at http://www.sec.gov. Copies of the preliminary prospectus supplement relating to these securities, when available, may be obtained from Piper Jaffray & Co., Attention: Prospectus Department, 800 Nicollet Mall, J12S03, Minneapolis, MN 55402 or by telephone at 800-747-3924 or by email at email@example.com, or from Leerink Swann LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110 or by telephone at 800-808-7525 or by email at Syndicate@Leerink.com. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, 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 jurisdiction.