Ducommun Incorporated (NYSE: DCO) (“Ducommun” or the “Company”) today announced that, as of July 1, 2013, it will be added to the Russell 2000 Index. “Ducommun is pleased to announce that, given the Company’s improved performance and higher market cap, our stock has been added to the Russell 2000 Index as part of its annual portfolio rebalancing,” said Anthony J. Reardon, chairman, president and chief executive officer. “We continue to focus on sustainable long-term growth, margin expansion, and free cash flow generation with a view to strengthening our balance sheet and long-term fundamentals. We welcome the opportunity to attract a broader audience of investors to our vision, our value, and our potential.” The Russell 2000 Index measures the performance of the small-cap segment of the U.S. equity universe. The Russell 2000 is a subset of the Russell 3000 Index representing approximately 10% of the total market capitalization of that index. It includes approximately 2000 of the smallest securities based on a combination of their market cap and current index membership. About Ducommun Incorporated Founded in 1849, Ducommun Incorporated provides engineering and manufacturing services to the aerospace, defense, and other industries through a wide spectrum of electronic and structural applications. The company is an established supplier of critical components and assemblies for commercial aircraft and military and space vehicles as well as for the energy market, medical field, and industrial automation. It operates through two primary business units – Ducommun AeroStructures (DAS) and Ducommun LaBarge Technologies (DLT). Additional information can be found at www.ducommun.com. Statements contained in this press release regarding other than recitation of historical facts are forward-looking statements. These statements are identified by words such as “may,” “will,” “begin,” “look forward,” “expect,” “believe,” “intend,” “anticipate,” “should,” “potential,” “estimate,” “continue,” “momentum” and other words referring to events to occur in the future. These statements reflect the Company’s current view of future events and are based on its assessment of, and are subject to, a variety of risks and uncertainties beyond its control, including, but not limited to, the state of the world financial, credit, commodities and stock markets, and uncertainties regarding the Company, its businesses and the industries in which it operates, which are described in the Company’s filings with the Securities and Exchange Commission. The Company is under no obligation to (and expressly disclaims any such obligation to) update or alter its forward-looking statements whether as a result of new information, future events or otherwise.