Opexa Therapeutics, Inc. (NASDAQ: OPXA), a company developing a novel T-cell therapy for multiple sclerosis (MS), today announced that it intends to offer shares of its common stock in an underwritten secondary public offering. All of the shares in the offering are to be sold by Opexa. 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. Opexa intends to use the net proceeds from the offering to continue funding the ongoing Abili-T clinical study of Tcelna in patients with Secondary Progressive MS and for general corporate purposes (including working capital, research and development, business development and operational purposes). Aegis Capital Corp. is acting as sole book-running manager in this offering. The offering is made pursuant to a shelf registration statement on Form S-3 that was filed by Opexa with the Securities and Exchange Commission (SEC) and declared effective by the SEC on December 5, 2012. A preliminary prospectus supplement relating to and describing the terms of the offering will be filed with the SEC and will be available on the SEC’s web site at http://www.sec.gov . Copies of the preliminary prospectus supplement relating to these securities may also be obtained from the offices of Aegis Capital Corp., Prospectus Department, 810 Seventh Avenue, 18 th Floor, New York, NY, 10019, via telephone at (212) 813-1010, or via email at firstname.lastname@example.org . This press release does not constitute an offer to sell or the solicitation of an offer to buy these securities, nor will there be any sale of these securities in any state or other 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. About Opexa Opexa’s mission is to lead the field of Precision Immunotherapy™ by aligning the interests of patients, employees and shareholders. The Company’s leading therapy candidate, Tcelna®, is a personalized T-cell immunotherapy that is in a Phase IIb clinical development program (the Abili-T trial) for the treatment of Secondary Progressive MS. Tcelna is derived from T-cells isolated from the patient’s peripheral blood, expanded ex vivo, and reintroduced into the patients via subcutaneous injections. This process triggers a potent immune response against specific subsets of autoreactive T-cells known to attack myelin.