Home > Insider Trading > Filing (0001104659-12-039059)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1167178	A123 Systems Inc.	AONE	Miscellaneous Electrical Machinery, Equipment & Supplies (3690)	043583876

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1373486	Joseph Robert Johnson	C/O A123 Systems, Inc. 200 West Street Waltham MA 02451	Vp & Gm, Energy Sol'ns Group	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2012-05-18	1,236	$0.88	407,855	No	4	S	Direct
Common Stock	Disposition	2012-05-21	6,250	$0.84	401,605	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.
These transactions were executed in multiple trades in prices ranging from $0.833 to $0.87. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.
Includes 401,605 restricted stock units ("RSUs"). Upon vesting thereof, the Reporting Person is entitled to receive one (1) share of common stock for each one (1) RSU.