X0609 4 2026-05-14 0001097864 ON SEMICONDUCTOR CORP ON 0001607095 Yan Christine Y false 5701 NORTH PIMA ROAD SCOTTSDALE AZ 85250 1 0 Common 2026-05-14 4 A 0 1986.0000 0.0000 A 48655.0000 D Represents restricted stock units granted under the Issuer's Amended and Restated Stock Incentive Plan on May 14, 2026. The award will vest on the day prior to the Issuer's next Annual Meeting of Stockholders; however, issuance of the shares underlying the award will be deferred to a later date in accordance with the Reporting Person's election. 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