X0202 3 2006-06-29 0 0001097864 ON SEMICONDUCTOR CORP ONNN 0001368095 Mahoney Robert Charles ON SEMICONDUCTOR (M/D A700) 5005 E. MCDOWELL ROAD PHOENIX AZ 85008 0 1 0 0 Executive VP, Sales & Mktg. Common Stock 20000 D Stock Option (right to buy) 1.94 2002-11-20 2012-11-20 Common Stock 200000 D Stock Option (right to buy) 1.25 2003-02-05 2013-02-05 Common Stock 17500 D Stock Option (right to buy) 7.02 2004-02-05 2014-02-05 Common Stock 43000 D Stock Option (right to buy) 3.55 2004-08-18 2014-08-18 Common Stock 8000 D Stock Option (right to buy) 4.23 2004-11-17 2014-11-17 Common Stock 12000 D Stock Option (right to buy) 4.80 2005-02-17 2015-02-17 Common Stock 40000 D Stock Option (right to buy) 6.83 2006-03-23 2016-03-23 Common Stock 40850 D Includes 20,000 restricted stock units granted to the Reporting Person effective June 5, 2006 under the Issuer's 2000 Stock Incentive Plan with one-third vesting on March 23, 2007, one-third vesting on March 23, 2008, and the remaining units vesting on March 23, 2009. Granted on November 20, 2002 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Granted on February 5, 2003 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Granted on February 5, 2004 under the Issuer's 2000 Stock Incentive Plan. The option is fully vested and exercisable. Granted on August 18, 2004 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Granted on November 17, 2004 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Granted on February 17, 2005 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Granted on March 23, 2006 under the Issuer's 2000 Stock Incentive Plan. The option is exercisable in four (4) equal installments on each of the first through fourth anniversaries of the Grant Date, subject to continued employment with the Issuers and other terms and conditions of the plan and the related stock option agreement. Judith A. Boyle is signing on behalf of the Reporting Person pursuant to a Power of Attorney attached herein as an exhibit. Robert Charles Mahoney by Judith A. Boyle as Attorney-in-Fact 2006-07-05