X0306 4 2022-02-10 0001097864 ON SEMICONDUCTOR CORP ON 0001826559 Jatou Ross 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 SVP & GM, ISG Common 2022-02-10 4 A 0 8831.0000 0.0000 A 59413.0000 D Represents common stock granted under the Issuer's Amended and Restated Stock Incentive Plan on February 10, 2022. The grant will vest in three equal annual installments beginning on the first anniversary of the grant date. The award was for no consideration other than service as an officer of the Issuer. Includes 137 shares acquired by the Reporting Person under the Issuer's Employee Stock Purchase Plan for the calendar quarter ended December 31, 2021. Lauren C. Bellerjeau is signing on behalf of the Reporting Person pursuant to a Power of Attorney attached hereto as Exhibit 24. /s/ Lauren C. Bellerjeau, Attorney-in-Fact 2022-02-14