Receptos Announces Proposed Underwritten Public Offering Of Common Stock

Receptos, Inc.

, a biopharmaceutical company developing therapeutic candidates for the treatment of immune and metabolic diseases, announced today that it intends to offer shares of its common stock in an underwritten public offering. All of the shares of common stock to be sold in the offering will be offered by Receptos. 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. Receptos intends to use the net proceeds received from this offering to fund continued development of its product candidate RPC1063 in ongoing and planned clinical trials for Relapsing Multiple Sclerosis, Ulcerative Colitis and Crohn's Disease, continued development of its in-licensed product candidate RPC4046 in an ongoing clinical trial for Eosinophilic Esophagitis, ongoing preclinical and research programs, and working capital and other general corporate purposes. Credit Suisse Securities (USA) LLC and Leerink Partners LLC are acting as joint lead book-running managers for the offering. Evercore Group L.L.C. and BMO Capital Markets Corp. are acting as book-running managers. Wedbush PacGrow Life Sciences and Nomura Securities International, Inc. are acting as co-managers. The offering is made pursuant to a shelf registration statement on Form S-3ASR that was filed by Receptos with the Securities and Exchange Commission (SEC) and became effective on July 16, 2014. The offering will be made only by means of a prospectus supplement and an accompanying prospectus. Copies of the preliminary prospectus supplement and the accompanying prospectus relating to and describing the terms of the offering may be obtained from Credit Suisse Securities (USA) LLC, Attention: Prospectus Department, One Madison Avenue, New York, NY 10010, Telephone: (800) 221-1037, Email: newyork.prospectus@credit-suisse.com; from Leerink Partners LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, Telephone: (800) 808-7525, Email: syndicate@leerink.com; from Evercore Group L.L.C., Attention: Equity Capital Markets, 55 East 52nd Street, New York, NY 10055, Telephone: (877) 993-2673, Email: ecm@evercore.com; or from BMO Capital Markets Corp., Attention: Equity Syndicate Department, 3 Times Square, New York, NY 10036, Telephone: (800) 414-3627, Email: bmoprospectus@bmo.com. This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.