X0306 4 2012-08-24 0 0001140310 ZBB ENERGY CORP ZBB 0001556993 Siebert Tony N93 W14475 WHITTAKER WAY MENOMONEE FALLS MN 53051 0 1 0 0 VP-Sales and Product Marketing Common Stock 0 D Stock Option (right to buy) .38 2012-08-24 4 A 0 150000 0 A 2013-08-24 2020-08-24 Common Stock 150000 150000 D Stock Option (right to buy) .38 2012-08-24 4 A 0 50000 0 A 2013-08-24 2020-08-24 Common Stock 50000 50000 D These options will vest and become exercisable over three years with the first one-third vesting on August 24, 2013 and the remaining two-thirds vesting in 24 equal monthly installments beginning on September 24, 2012 and ending on August 24, 2015. Subject to the achievement of certain performance vesting conditions, these options will vest in full on June 30, 2013. /s/ Tony Siebert by Mark Busch, attorney-in-fact 2012-08-28