The underwriters of the offering will be Piper Jaffray & Co., acting as book-running manager, and SG Cowen & Co., LLC and Thomas Weisel Partners LLC, acting as co-managers. The number of shares to be offered and the price range for the offering have not yet been determined.

The offering will be made only by means of a prospectus. When available, a copy of the preliminary prospectus relating to the offering may be obtained from the prospectus department of either Piper Jaffray & Co. (800 Nicollet Mall, Suite 800, Minneapolis, MN 55402, (612) 303-6000), SG Cowen & Co., LLC (c/o ADP Financial Services, Prospectus Department, 1155 Long Island Avenue, Edgewood, NY 11717 or by fax at (631) 254-7268) or Thomas Weisel Partners LLC (One Montgomery Street, Suite 3700, San Francisco, CA 94104, (415) 364-2500).

A registration statement relating to these securities has been filed with the Securities and Exchange Commission but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. 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 in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

About Hoku Scientific, Inc.

Hoku Scientific, Inc. is a technology company focused on designing, developing and manufacturing membrane electrode assemblies (MEAs) and non-fluorinated membranes for proton exchange membrane (PEM) fuel cells.
 

Dustin Shindo of Hoku Scientific, Inc., +1-808-845-780

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