Exhibit 99.1 N E W S R E L E A S E Contact: Investor Relations Inquiries Media Inquiries Jennifer Gilligan Sara Garland Senior Vice President, Finance & Investor Relations Chief Communications Officer (212) 549-1306 (314) 445-0790 FOR IMMEDIATE RELEASE CENTENE CORPORATION REPORTS THIRD QUARTER 2025 RESULTS -- GAAP Diluted Loss Per Share of $(13.50); Adjusted Diluted Earnings Per Share of$0.50 -- ST. LOUIS, October 29, 2025 -- Centene Corporation (NYSE: CNC) (the Company) announced today its financial resul ...