X0306 4 2017-09-01 0001097864 ON SEMICONDUCTOR CORP ON 0001634640 OZCELIK TANER 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 SVP&GM, Image Sensor Group Common 2017-09-01 4 F 0 7107.0000 17.2500 D 264800.0000 D Common 2017-09-01 4 F 0 7107.0000 17.2500 D 257693.0000 D This disposition transaction represents shares withheld by the Issuer in connection with the vesting of certain performance-based restricted stock units ("PBRSUs") pursuant to the Reporting Person's 2014 PBRSU award and related award agreements. The reported 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 vesting of certain units under the September 2, 2014 restricted stock units award to the Reporting Person under the Issuer's Amended and Restated Stock Incentive Plan. The reported 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 2017-09-06