X0306 4 2017-03-02 0001097864 ON SEMICONDUCTOR CORP ON 0001558921 GUTMANN BERNARD 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 Exec VP & CFO Common 2017-03-02 4 F 0 5129.0000 15.1600 D 388577.0000 D Common 2017-03-03 4 F 0 6187.0000 15.2100 D 382390.0000 D Common 2017-03-03 4 F 0 13697.0000 15.2100 D 368693.0000 D This disposition transaction represents shares withheld by the Issuer in connection with the March 2, 2015 restricted stock units award to the Reporting Person under the Issuer's Amended and Restated Stock Incentive Plan. On March 2, 2017, certain of these units vested. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person. This disposition transaction represents shares withheld by the Issuer in connection with the March 3, 2014 restricted stock units award to the Reporting Person under the Issuer's Amended and Restated Stock Incentive Plan. On March 3, 2017, certain of these units vested. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person. This disposition transaction represents shares withheld by the Issuer in connection with the Reporting Person's 2014 Performance Based Restricted Stock Units award and related award agreements. On March 3, 2017, certain of these units vested. These shares were withheld to satisfy the Reporting Person's tax withholding obligations. The Issuer will pay these taxes on behalf of the Reporting Person. Mark N. Rogers, Attorney-in-Fact 2017-03-06