X0407 4 2023-06-15 0001097864 ON SEMICONDUCTOR CORP ON 0001558882 El-Khoury Hassane 5701 NORTH PIMA ROAD SCOTTSDALE AZ 85250 1 1 CEO & President 1 Common 2023-06-15 4 S 0 600.0000 91.8667 D 573212.0000 D Common 2023-06-15 4 S 0 21900.0000 91.4109 D 551312.0000 D This disposition transaction was executed in multiple trades at prices ranging from $91.86 to $91.90. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes 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. This disposition transaction was executed in multiple trades at prices ranging from $90.86 to $91.85. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes 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. /s/ Pamela L. Tondreau, Attorney-in-Fact 2023-06-20