A123 Systems Names David Prystash Chief Financial Officer

A123 Systems, Inc. (Nasdaq:AONE), a developer and manufacturer of advanced Nanophosphate® lithium ion batteries and systems, today announced that David Prystash has accepted an offer to become the Company’s Chief Financial Officer. Prystash, who is expected to join A123 effective May 12, 2011, has more than 25 years of financial and operational leadership, including more than two decades at Ford Motor Company.

"David Prystash brings considerable financial and executive leadership skills to A123, and we are thrilled that he will be joining as our new Chief Financial Officer," said David Vieau, Chief Executive Officer of A123 Systems. "David has managed multi-billion dollar organizations as an executive in both financial and operational roles. He also has more than two decades of experience in the automotive industry, which is the market we expect to represent the largest portion of our revenue over the long-term. We look forward to David’s contributions as we move A123 toward its long-term profitability objectives in the years ahead."

Prior to joining A123, Prystash served as Chief Financial Officer for NewPage Corporation, the largest coated paper manufacturer in North America with $3.6 billion in sales and 7,300 employees. Before that, Prystash spent more than 20 years at Ford Motor Company, where he held a variety of senior financial and operational leadership positions. Prystash served as Chief Financial Officer of Ford’s global product development and purchasing where he was responsible for managing multi-billion dollar annual capital investment and engineering budgets, in addition to capital allocation for Ford Motor Company globally. He also served as an Executive Director of Ford’s Pre-Owned and Vehicle Remarketing. David’s leadership experience also includes serving on the Board of Directors for Ballard Power Systems and NewPage.

Prystash received a bachelor’s degree in administrative and managerial science with a major in economics and a master’s degree in industrial administration from Carnegie Mellon University.

"I am extremely excited to join A123 Systems, which has established a technology and market leadership position for advanced battery systems," said Prystash. "With the ramping production of A123’s new facilities in Michigan, the company is at an exciting inflection point. I look forward to helping manage A123’s rapid growth, capacity investment and growth initiatives."

A123 Systems, Inc. (Nasdaq:AONE) develops and manufactures advanced lithium ion batteries and battery systems for the electric vehicles, electric grid services and commercial markets. Headquartered in Massachusetts and founded in 2001, A123’s proprietary nanoscale electrode technology is built on initial developments from the Massachusetts Institute of Technology.

www.a123systems.com