Company:  ACTIVE POWER INC (ACPW)
Form Type:  4
Filing Date:  6/4/2012 
CIK:  0001044435 
Address:  2128 WEST BRAKER LANE, BK12 
City, State, Zip:  AUSTIN, Texas 78758 
Telephone:  (512) 836-6464 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$4.29  
Change: 
-0.11 (-2.50%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$82.63M
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES