X0306 4 2017-01-10 0001097864 ON SEMICONDUCTOR CORP ON 0001565015 RASHID MAMOON 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 SVP, Strategic Bus Ventures Common 2017-01-10 4 M 0 17500.0000 9.2080 A 252411.0000 D Common 2017-01-10 4 S 0 17500.0000 13.3410 D 234911.0000 D Stock Option (right to buy) 9.2080 2017-01-10 4 M 0 17500.0000 0.0000 D 2008-03-05 2017-03-05 Common 17500.0000 0.0000 D This transaction was made pursuant to the Reporting Person's existing Rule 10b5-1 plan (i.e., a stock trading plan designed to comply with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended). This disposition tranaction was executed in multiple trades at pricing ranging from $13.27 to $13.46. The price reported above reflects the weighted average sale price. The Reporting Person hereby understakes to provide, upon request, to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected. Includes an aggregate of 959 shares acquired by Reporting Person under the Issuer's Employee Stock Purchase Plan for the quarters ended September 30, 2016 and December 31, 2016. Mark N. Rogers, Attorney-in-Fact 2017-01-12