Officer and Director Transaction Report

Christopher A. Koster, Secretary & General Counsel of CENTENE CORP (CNC), reported a disposition of 9,087 shares of Common Stock on March 15, 2026, at a price of $34.45 per share. This transaction was a disposition code "D", with 9,087 shares withheld for taxes upon vesting of previously-reported grants of restricted stock units. Following this transaction, Mr. Koster directly owns 352,835.617 shares of common stock. The report also includes holdings of 100 shares of common stock held by his spouse and 15,690 shares of common stock options. Additionally, Mr. Koster holds 3,015.544 shares of phantom stock, with each share representing the right to receive the fair market value of one share of Centene common stock.