Kahn Swick & Foti, LLC ("KSF") and KSF partner, the former Attorney General of Louisiana, Charles C. Foti, Jr., remind investors that they have until June 1, 2012 to file lead plaintiff applications in a securities class action lawsuit against A123 Systems, Inc. ("A123" or the "Company") (Nasdaq:AONE), if they purchased the Company’s securities between February 28, 2011 and March 23, 2012 inclusive (the "Class Period"). What You May Do If you purchased shares of A123 Systems and would like to discuss your legal rights and how this case might affect you and your right to recover for your economic loss, you may, without obligation or cost to you, e-mail or call KSF Managing Partner, Lewis Kahn ( firstname.lastname@example.org), toll free, 877-515-1850, or via cell phone any time at 504-301-7900, or KSF Director of Client Relations, Neil Rothstein, Esq. ( email@example.com), toll free at 877-694-9510, or via cell phone any time at 330-860-4092. If you wish to serve as a lead plaintiff in this class action by overseeing lead counsel with the goal of obtaining a fair and just resolution, you must request this position by application to the Court by June 1, 2012. About the Lawsuit A123 and certain of its senior executives are charged with issuing a series of materially false and misleading statements, during the Class Period, in violation of federal securities laws. On March 26, 2012, Company shares declined more than 12%, to close at $1.49 per share, after A123 disclosed it would incur costs of over $55.0 million to replace defective and recalled battery modules and packs. $55.0 million is an amount equal to 25% of A123’s projected annual revenue for 2012. About Kahn Swick & Foti, LLC To learn more about KSF, whose partners include the Former Louisiana Attorney General, Charles C. Foti, Jr., and other lawyers with significant experience litigating complex securities class actions nationwide on behalf of both institutional and individual shareholders, you may visit www.ksfcounsel.com.