CNC: Leadership change · Company disclosure

ITEM 5.02 DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS Effective June 19, 2026, the Board of Directors (the Board) of Centene Corporation (the Company) increased the size of the Board from 9 to 10 and elected Lauren Tyler to the Board to fill the resulting vacancy, with a term expiring at the Company's 2027 annual meeting of stockholders. She is anticipated to serve as a member of the Audit Committee and the Compensation and Talent Committee, effective as of July 1, 2026. Ms. Tyler served for more than two decades at JPMorgan Chase & Co., a multinational banking institution. She most recently served as Executive Vice President, Global Head of Human Resources for JPMorgan Chase’s Asset & Wealth Management Division from 2015 to 2024. From 2014 to 2015, Ms. Tyler served as its Global Firmwide Chief Auditor. Prior to that, Ms. Tyler had served as its Global Firmwide Head of Investor Relations from 2009 to 2012. Ms. Tyler currently serves on the board of Cencora, Inc., a global pharmaceutical company and Guardian Life, a leading mutual insurance company. Ms. Tyler will participate in the Company's standard non-employee director compensation program as described in the Company's proxy statement filed with the SEC on March 27, 2026. There are no arrangements or understandings pursuant to which Ms. Tyler has been elected as a director of the Company. There are no family relationships between Ms. Tyler and any director or executive officer of the Company. There are no related party transactions in respect of the Company of the kind described in Item 404(a) of Regulation S-K in which Ms. Tyler was a participant. ITEM 7.01 REGULATION FD DISCLOSURE A copy of the press release announ