CENTENE CORP (CNC) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-29 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: CENTENE CORP (CNC) CIK: 0001071739 --- Reporting Owner --- Name: Carson Michael A CIK: 0001934743 Role: Officer (Group President, Medicare&Spec) --- Derivative Transactions --- [Transaction #1] Security: Phantom Stock Date: 2026-05-29 | Code: I (Discretionary (intra-plan)) Shares: -604.004 | Price: $59.60 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] Each share of phantom stock represents the right to receive the fair market value of one share of Centene common stock. [F3] Represents a reallocation of units under the Company's nonqualified deferred compensation plan from an investment option tracking the Company's common stock to an alternative investment option. The transaction does not represent an open market sale of securities. The transaction was effected at the closing price of the Company's common stock on the transaction date. [F4] The phantom stock has no formal expiration date. The phantom stock will be settled in cash or other non-Company securities upon Mr. Carson's termination with the Company or on such other date Mr. Carson may elect. [F4] The phantom stock has no formal expiration date. The phantom stock will be settled in cash or other non-Company securities upon Mr. Carson's termination with the Company or on such other date Mr. Carson may elect. [F3] Represents a reallocation of units under the Company's nonqualified deferred compensation plan from an investment option tracking the Company's common stock to an alternative investment option. The transaction does not represent an open market sale of securities. The transaction was effected at the closing price of the Company's common stock on the transaction date. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) Footnotes: [F1] Ownership includes 113,747 shares of previously-granted restricted stock units and performance stock units (reported at target level performance) subject to vesting requirements. [Holding #2] Security: Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: Ownership includes 113,747 shares of previously-granted restricted stock units and performance stock units (reported at target level performance) subject to vesting requirements. F2: Each share of phantom stock represents the right to receive the fair market value of one share of Centene common stock. F3: Represents a reallocation of units under the Company's nonqualified deferred compensation plan from an investment option tracking the Company's common stock to an alternative investment option. The transaction does not represent an open market sale of securities. The transaction was effected at the closing price of the Company's common stock on the transaction date. F4: The phantom stock has no formal expiration date. The phantom stock will be settled in cash or other non-Company securities upon Mr. Carson's termination with the Company or on such other date Mr. Carson may elect. --- Signature --- /s/ /s/ Christopher A. Koster (executed by attorney-in-fact) (2026-06-02)