CENTENE CORP

(a) Centene Corporation (the Company) announced today that, as of December 2, 2024, Dave Thomas, the Company's CEO of Markets & Medicaid, will no longer be employed by the Company. Until his departure, Mr. Thomas will assist with the transition of his role and will advise on other matters. During his more than 25 years with Fidelis Care in New York and Centene Corporation, Mr. Thomas was influential in the Company’s success and dedication to its mission, building a team of exceptional market leaders and advancing our uniquely local approach. Subject to Mr. Thomas' compliance with the release of claims and other conditions set forth in the Executive Severance and Change in Control Plan filed with the Company's Form 10-K for the fiscal year ended December 31, 2023, Mr. Thomas is expected to receive severance and other benefits applicable to his separation and pursuant to the benefits for Tier I eligible employees set forth in Section V of the plan, including vesting of his outstanding performance-based restricted stock units prorated through his departure date based on actual performance during the performance period, consistent with his outstanding award agreements.

(b) None.

(c) During the three months ended June 30, 2024, no director or officer of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408(a) of Regulation S-K.