ON SEMICONDUCTOR CORP (ON) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-14 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: ON SEMICONDUCTOR CORP (ON) CIK: 0001097864 --- Reporting Owner --- Name: MASCARENAS PAUL ANTHONY CIK: 0001625756 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Date: 2026-05-14 | Code: A (Grant or award) Shares: +1,986 | Price: $0.00 Shares Owned After: 57,474 | Ownership: D (Direct) Footnotes: [F1] 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. --- Footnotes (Complete Index) --- F1: 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. --- Signature --- /s/ /s/ Hope M. Spencer, Attorney-in-Fact (2026-05-18)