ON: Leadership change

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. (b) As previously disclosed by ON Semiconductor Corporation ( the “ Company ” and, together with its affiliates, “ onsemi ”), Simon Keeton, the former Group President, Power Solutions Group, of onsemi, stepped down from all officer positions with onsemi effective March 9, 2026, as mutually agreed between the parties. Mr. Keeton’s final day of full employment with onsemi was ​expected to be June 30, 2026; however, on May 14, 2026, onsemi and Mr. Keeton agreed to extend his last day of employment to September 30, 2026, in order to support an orderly transition to his successor. Item 5.07. Submission of Matters to a Vote of Security Holders. (a) The 2026 Annual Meeting of Stockholders (the “ Annual Meeting ”) of the Company was held on May 14, 2026. The proposals submitted to the stockholders of the Company at the Annual Meeting and the final voting results for each are set forth below. The proposals are described in detail in the Company’s definitive proxy statement filed with the Securities and Exchange Commission on April 2, 2026. (b) Proposal No. 1. The Company’s stockholders elected seven directors of the Company, each for a one-year term expiring at the 2027 annual meeting of stockholders and until their successors are duly elected and qualified, or until the earlier time of their death, resignation or removal, as set forth below: Name Votes For Votes Against Abstentions Broker Non-Votes Susan K. Carter 329,795,834 11,686,093 317,809 19,260,396 Thomas L. Deitrich 327,348,905 14,326,260 124,571 19,260,396 Hassane El-Khoury 340,627,665 1,064,027 108,044 19,260,396 Bruce E. Kiddoo 325,217,404 16,200,456 381,876 19,