Holzer Holzer & Fistel, LLC is investigating whether A123 Systems Inc. ("A123" or the "Company") (OTC: AONEQ) and/or certain of its officers complied with the federal securities laws when making statements to investors. Specifically, the investigation focuses on statements issued by A123 between February 28, 2011 and October 16, 2012 regarding the Company's assets and its relationship with its largest customer, Fisker Automotive, Inc.

If you purchased A123 common stock between February 28, 2011 and October 16, 2012, inclusive, and suffered losses on that investment, you are encouraged to contact Holzer Holzer & Fistel, LLC and its attorneys Michael I. Fistel Jr., Esq. or Marshall P. Dees, Esq. via email at mfistel@holzerlaw.com, or mdees@holzerlaw.com, or via toll-free telephone at (888) 508-6832 regarding your legal rights.

Holzer Holzer & Fistel, LLC is an Atlanta, Georgia law firm that dedicates its practice to vigorous representation of shareholders and investors in litigation nationwide, including shareholder class action and derivative litigation. More information about the firm is available through its website, www.holzerlaw.com and upon request from the firm. Holzer Holzer & Fistel, LLC has paid for the dissemination of this promotional communication, and Michael I. Fistel, Jr. is the attorney responsible for its content.

Holzer Holzer & Fistel, LLC
Michael I. Fistel, Jr., Esq.
Marshall P. Dees, Esq.
888-508-6832 (toll-free)
mfistel@holzerlaw.com
mdees@holzerlaw.com