GSE Systems, Inc. (“GSE” or “the Company”) (NYSE Amex: GVP), a global energy services solutions provider, today announced that it has been selected to provide a real-time, high-fidelity engineering simulator for the B&W mPower™ Small Modular Reactor (SMR) design. The simulator will be used as a platform for validation of plant system designs and the development of control and logic strategies, and serve as a key part of the human factors engineering program. Generation mPower LLC is working to fully develop and deploy the B&W mPower™ reactor technology. The reactor is a First-of-a-Kind (FOAK), scalable, modular, passively safe, advanced light water system. The B&W mPower™ reactor is being designed to provide 160 MWe of clean, zero-emissions energy for four years of operation without refueling. Jim Eberle, Chief Executive Officer of GSE, commented, “This agreement with B&W solidifies GSE’s position as the industry leader in providing high-fidelity engineering simulation for FOAK reactor designs. Our flexible platform helps mitigate risk by allowing customers to verify and validate systems and processes at the design stage, when changes can be made more easily and cost-effectively than during plant construction. GSE and B&W will work together beyond this initial phase to expand the scope of the simulator and synchronize throughout the design process.” Mr. Eberle concluded, “We view the application of our high-fidelity simulation in the engineering phase as a natural, and increasingly necessary, extension of its use in existing nuclear and non-nuclear energy facilities. This agreement represents our ongoing efforts to diversify our business model, and leverage GSE’s benchmark technical and human assets.” ABOUT GSE SYSTEMS, INC. GSE Systems, Inc. provides a wide range of simulation and training solutions to the global energy (nuclear and non-nuclear) industry, and is the world leader in nuclear simulation. The Company has over four decades of experience, more than 1,000 installations, and hundreds of customers in over 50 countries spanning the globe. Our software, hardware and integrated training solutions leverage proven technologies to deliver real-world business advantages to the energy, process, manufacturing and government sectors worldwide. GSE Systems is headquartered in Sykesville (Baltimore), Maryland, with offices in St. Marys and Augusta, Georgia; Tarrytown, New York; Madison, New Jersey; Chennai, India; Nyköping, Sweden; Stockton-on-Tees, UK; and Beijing, China. Information about GSE Systems is available via the Internet at http://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.