X0303 4 2010-02-25 0 0001044435 ACTIVE POWER INC ACPW 0001376944 Rackow Gary Paul C/O ACTIVE POWER INC. 2128 W. BRAKER LN., BK 12 AUSTIN TX 78758 0 1 0 0 VP of Sales - Americas Employee Stock Option (Right to Buy) 0.79 2010-02-25 4 A 0 90000 0 A 2020-02-25 Common Stock 90000 90000 D With continued service, 25% of the option shares shall vest and become exercisable on 2/25/2011, and the balance shall vest and become exercisable in a series of twelve equal quarterly installments upon the completion of each additional quarter of service through 2/25/2014. /s/ John K. Penver (Attorney-in-Fact) 2010-02-26