Hyperion Therapeutics Closes Follow-On Offering, Underwriters' Exercised Option

Hyperion Therapeutics, Inc.

announced today the completion of its follow-on offering of 2,875,000 shares of common stock. In addition, the underwriters exercised their over-allotment option in full and purchased an additional 431,250 shares of common stock. All such shares were sold by Hyperion at the follow-on offering price of $20.75 per share. The net proceeds to Hyperion from this offering are approximately $64.5 million, after deducting underwriter discounts and commissions. Leerink Swann LLC and Cowen and Company, LLC acted as joint book-running managers for the offering, and Needham & Company, LLC and JMP Securities LLC acted as co-managers for the offering.