X0306 4 2013-10-01 0001097864 ON SEMICONDUCTOR CORP ONNN 0001558921 GUTMANN BERNARD 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 Exec VP & CFO Common 2013-10-01 2013-10-01 4 D 0 8586.0000 7.3600 D 127106.0000 D This disposition transaction represents shares withheld by the Issuer in connection with the October 1, 2012 restricted stock unit award to the Reporting Person under the Issuer's Amended and Restated Stock Incentive Plan. On October 1, 2013 certain of these units vested. These shares were withheld to satisfy the Reporting Person's withholding obligations for various taxes and similar items. The Issuer will pay these taxes on behalf of the Reporting Person. George H. Cave is signing on behalf of the Reporting Person pursuant to a Power of Attorney attached herein as an exhibit. gutmann2013poa.txt George H. Cave, as Attorney-in-Fact 2013-10-03