GSE Systems, Inc. (“GSE” or “the Company”) (NYSE MKT: GVP) announced that the New York Stock Exchange has notified the Company about significant and unusual trading activity in GSE’s shares on January 22, 2013 and requested the Company to respond by press release to the unusual activity. Ordinarily, it is GSE’s policy not to comment on unusual market activity or market rumors; however the Company did confirm that it is not aware of any material corporate developments beyond its most recently issued news releases which could account for the recent unusual trading activity in its shares. ABOUT GSE SYSTEMS, INC. GSE Systems Inc. is a world leader in real-time high-fidelity simulation, providing a wide range of simulation, training and engineering solutions to the energy and process industries. Its comprehensive and modular solutions help customers achieve performance excellence in design, training and operations. GSE’s products and services are tailored to meet specific client requirements such as scope, budget and timeline. The Company has over four decades of experience, more than 1,100 installations, and hundreds of customers in over 50 countries spanning the globe. GSE Systems is headquartered in Sykesville (Baltimore), Maryland, with offices in St. Marys, Georgia; Madison, New Jersey; Cary, North Carolina; Chennai, India; Nyköping, Sweden; Stockton-on-Tees, UK; Glasgow, UK; and Beijing, China. Information about GSE Systems is available at www.gses.com. FORWARD LOOKING STATEMENTS We make statements in this press release that are considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934. These statements reflect our current expectations concerning future events and results. We use words such as “expect,” “intend,” “believe,” “may,” “will,” “should,” “could,” “anticipates,” and similar expressions to identify forward-looking statements, but their absence does not mean a statement is not forward-looking. These statements are not guarantees of our future performance and are subject to risks, uncertainties, and other important factors that could cause our actual performance or achievements to be materially different from those we project. For a full discussion of these risks, uncertainties, and factors, we encourage you to read our documents on file with the Securities and Exchange Commission, including those set forth in our periodic reports under the forward-looking statements and risk factors sections. We do not intend to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.