X0306 4 2013-07-25 1 0001042825 POWER ONE INC PWER 0001496851 Hogge Steven D 740 CALLE PLANO CAMARILLO CA 93012 0 1 0 0 President, Power Solutions Common Stock 2013-07-25 4 D 0 224031 6.35 D 0 D Non-Qualified Stock Option 4.265 2013-07-25 4 D 0 133000 D 2022-04-30 Common Stock 133000 0 D Non-Qualified Stock Option 9.04 2013-07-25 4 D 0 100000 D 2020-07-15 Common Stock 100000 0 D Non-Qualified Stock Option 8.08 2013-07-25 4 D 0 60000 D 2021-05-03 Common Stock 60000 0 D Reflects 50,178 shares of restricted stock units ("RSUs") granted to Mr. Hogge. Such RSUs can be settled for the Issuer's common stock, par value $0.001 ("Common Stock") underlying such option, and vested immediately prior to the effective time of the merger of Verdi Acquisition Corporation, an indirect wholly owned subsidiary of ABB Ltd ("ABB"), with and into Issuer, with Issuer continuing as the surviving corporation (the "Merger") pursuant to the merger agreement by and among the foregoing entities (the "Merger Agreement"). This option, which provided for vesting in three equal annual installments beginning on April 30, 2013, was assumed by ABB in the Merger and replaced with an option to purchase 37,232 shares of ABB American Depositary Shares ("ADSs") for $15.24 per ADS. This option, which provided for vesting in four equal annual installments beginning on July 15, 2011, was assumed by ABB in the Merger and replaced with an option to purchase 27,994 ADSs for $32.30 per ADS. This option, which provided for vesting in three equal annual installments beginning on May 3, 2012, was assumed by ABB in the Merger and replaced with an option to purchase 16,796 ADSs for $28.87 per ADS. /s/ Tina D. McKnight, by power of attorney for Steve Hogge 2013-07-29