News Release Details

Supernus Announces Pricing of Public Offering

November 29, 2012 at 11:49 PM EST

ROCKVILLE, Md., Nov. 29, 2012 (GLOBE NEWSWIRE) -- Supernus Pharmaceuticals, Inc. (Nasdaq:SUPN), a specialty pharmaceutical company announced the pricing of the underwritten public offering of 6,000,000 shares of its common stock at a price to the public of $8.00 per share. Supernus has granted the underwriters a 30-day option to purchase up to 900,000 additional shares to cover over-allotments, if any.

Jefferies & Company, Inc., Piper Jaffray & Co. and Cowen and Company, LLC are acting as joint book-running managers for the offering. Stifel Nicolaus Weisel and Lazard Capital Markets LLC are acting as co-managers.

A registration statement relating to these securities has been filed with, and declared effective by, the Securities and Exchange Commission. This press release shall not constitute an offer to sell or a 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 such state.

This offering is being made only by means of a prospectus. Copies of the preliminary prospectus or, when available, the final prospectus for this offering, may be obtained from the offices of Jefferies & Company, Inc., Equity Syndicate Prospectus Department, at 520 Madison Avenue, New York, NY 10022, or by calling (877) 547-6340, or by emailing Prospectus_Department@Jefferies.com; 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 prospectus@pjc.com; or from Cowen and Company, LLC, c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY 11717, Attention: Prospectus Department, or by telephone at (631) 274-2806, or by fax at (631) 254-7140.

About Supernus Pharmaceuticals, Inc.

Supernus Pharmaceuticals, Inc. is a specialty pharmaceutical company focused on developing and commercializing products for the treatment of central nervous system, or CNS, diseases. The company has one approved product for epilepsy, Oxtellar XR™ (extended-release oxcarbazepine), and one tentatively approved product for epilepsy, Trokendi XR™ (extended-release topiramate). The company is also developing several product candidates in psychiatry to address large market opportunities in ADHD, including ADHD patients with impulsive aggression. These product candidates include SPN-810 for impulsive aggression in ADHD and SPN-812 for ADHD.

CONTACT: Jack Khattar, President & CEO

         Gregory S. Patrick, Vice President and CFO

         Supernus Pharmaceuticals, Inc.

         Tel: (301) 838-2500
Source: Supernus Pharmaceuticals, Inc.

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