Dynasil (DYSL) Appoints Chairman Peter Sulick as Interim Chief Executive Officer and President

Dynasil Corporation of America (NASDAQ: DYSL) today announced that Steven K. Ruggieri will resign as Chief Executive Officer and President and as a member of the Board of Directors effective July 6, 2012. Dynasil Chairman Peter Sulick will serve as the Company’s Interim Chief Executive Officer and President until a replacement is named by the Board.

“During his tenure with the Company, Steve helped to further the commercialization strategy for our dual mode technology, advanced our product pipeline and strengthened our business development initiatives,” Sulick said. “On behalf of the Board, I want to wish Steve success as he pursues new endeavors and thank him for his contributions to Dynasil.”

“The Board will begin the search process, which is centered on identifying the right senior executive to maximize the value of our products and technology and enhance shareholder value,” Sulick said. “Our strategy continues to focus on leveraging our research organization and accelerating the commercialization of new products.”

Sulick, 61, has been a director of the Company since 2008 and has served as the non-executive Chairman of the Board since September 2009. He chaired the Audit Committee from July 2008 to February 2012, and has served on the Nominating and Governance Committee since 2010. In addition to his new role, Sulick will remain Chairman of the Board.

Sulick is President and CEO of AmeriSite, LLC, a family-owned real estate development and Investment Company he founded in 1998 and is the Executive Chairman and former CEO of Prism Microwave, Inc., which provides RF conditioning products for the mobile wireless infrastructure industry. From 1985 to 2002, Sulick founded and led broadcasting and telecommunications companies that were later acquired by Nextel, T-Mobile and others. Earlier in his career he worked for Cablevision Systems Corporation and the Communications Operations Group of ITT. He began his career in the audit department at Arthur Andersen & Co. in New York City. A certified public accountant, Sulick received his MBA in finance from the University of Massachusetts and a B.S. in Business Administration from The Citadel.

About Dynasil

Dynasil Corporation of America (NASDAQ: DYSL) develops and manufactures detection and analysis technology, precision instruments and optical components for the homeland security, medical and industrial markets. Combining world-class technology with expertise in research and materials science, Dynasil is commercializing products including dual-mode radiation detection solutions for Homeland Security and commercial applications, probes for medical imaging and sensors for non-destructive testing. Dynasil has an impressive and growing portfolio of issued and pending U.S. patents. The Company is based in Watertown, Massachusetts, with additional operations in Mass., Minn., NY, NJ and the United Kingdom. More information about the Company is available at www.dynasil.com.

Forward-looking Statements

This news release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements regarding future events and our future results are based on current expectations, estimates, forecasts, and projections and the beliefs and assumptions of our management. These forward-looking statements may be identified by the use of words such as “may,” “could,” “expect,” “estimate,” “anticipate,” “continue” or similar terms, though not all forward-looking statements contain such words. The actual results of the future events described in such forward-looking statements could differ materially from those stated in such forward-looking statements due to a number of important factors. These factors that could cause actual results to differ from those anticipated or predicted include, without limitation, our ability to develop and commercialize our products, the size and growth of the potential markets for our products and our ability to serve those markets, the rate and degree of market acceptance of any of our products, general economic conditions, costs and availability of raw materials and management information systems, our ability to obtain and maintain intellectual property protection for our products, competition, the loss of key management personnel, litigation, the effect of governmental regulatory developments, the availability of financing sources, our ability to identify and execute on acquisition opportunities and integrate such acquisitions into our business, and seasonality, as well as the uncertainties set forth in the Company’s Annual Report on Form 10-K and from time to time in the Company’s other filings with the Securities and Exchange Commission. The Company disclaims any intention or obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.