X0306 4 2023-02-20 0001097864 ON SEMICONDUCTOR CORP ON 0001826559 Jatou Ross 5005 EAST MCDOWELL ROAD PHOENIX AZ 85008 1 SVP & GM, ISG Common 2023-02-20 4 A 0 10091.0000 0.0000 A 97328.0000 D Represents time-based restricted stock units that will vest in three equal annual installments beginning on the first anniversary of the grant date, subject to the Reporting Person's continued employment through the applicable vesting date. /s/ Pamela L. Tondreau, Attorney-in-Fact 2023-02-22