SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Hyperion Therapeutics, Inc. (NASDAQ:HPTX) announced today the completion of its initial public offering of 5,000,000 shares of common stock. In addition, the underwriters of its initial public offering exercised their over-allotment option in full and purchased an additional 750,000 shares of common stock. All of such shares were sold by Hyperion Therapeutics at the initial public offering price of $10.00 per share. Leerink Swann LLC and Cowen and Company, LLC acted as joint book-running managers for the proposed offering, and Needham & Company, LLC acted as co-manager of the offering.