X0607 3 2026-05-15 0 0001097864 ON SEMICONDUCTOR CORP ON 0002135923 SHAH ACHYUT false 5701 NORTH PIMA ROAD SCOTTSDALE AZ 85250 1 Group President, PSG Common 15207.0000 D Represents time-based restricted stock units that were granted on May 14, 2026 and will vest in three equal installments beginnin on the first anniversary of the grant date, subject to the Reporting Person's continued employment through the applicable vesting date. 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 2026-05-22