X0609 4 2026-05-14 0001097864 ON SEMICONDUCTOR CORP ON 0001417291 Deitrich Thomas false 5701 NORTH PIMA ROAD SCOTTSDALE AZ 85250 1 0 Common 2026-05-14 4 A 0 1986.0000 0.0000 A 26060.0000 D Represents restricted stock granted under the Issuer's Amended and Restated Stock Incentive Plan on May 14, 2026. The stock will vest on the day prior to the Issuer's next Annual Meeting of Stockholders. Hope M. Spencer is signing on behalf of the Reporting Person pursuant to a Power of Attorney attached hereto as Exhibit 24. /s/ Hope M. Spencer, Attorney-in-Fact 2026-05-18