A123 SYSTEMS, INC.·4

Dec 21, 2:09 PM ET

Pyenson Eric J. 4

4 · A123 SYSTEMS, INC. · Filed Dec 21, 2011

Insider Transaction Report

Form 4
Period: 2011-12-19
Pyenson Eric J.
Vice President and General Cou
Transactions
  • Award

    Common Stock

    2011-12-19+61,78499,149 total
Footnotes (3)
  • [F1]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.
  • [F2]25% of the RSUs will vest on December 19, 2012, and 6.25% of the total number of RSUs will vest at the end of each three-month period thereafter, so that 100% of the RSUs will be fully vested on December 19, 2015.
  • [F3]Includes 99,149 RSUs.

Documents

1 file
  • 4
    a4.xmlPrimary

    4