X0303 4 2011-02-24 0 0001044435 ACTIVE POWER INC ACPW 0001318924 Penver John K C/O ACTIVE POWER, INC. 2128 W. BRAKER LANE, BK12 AUSTIN TX 78758 0 1 0 0 Chief Financial Officer Employee Stock Option (right to buy) 0.79 2011-02-24 4 A 0 292500 0 A 2020-02-25 Common Stock 292500 292500 D On February 25, 2010, the reporting person was granted an option to purchase shares of common stock, of which 292,500 option shares became eligible for vesting on February 24, 2011 upon Active Power's satisfaction of certain performance criteria for the fiscal year ending December 31, 2010. With continued service, the number of option shares eligible for vesting shall vest as follows: (i) 50% on the first anniversary of the date of grant, (ii) 25% on the second anniversary of the date of grant, and (iii) 25% on the third anniversary of the date of grant. /S/ John K. Penver 2011-02-24