Form 4 Filing for Seifu Rahael

This filing reports a transaction by Seifu Rahael, a director at CME GROUP INC. On June 25, 2026, Mr. Rahael acquired 645 shares of Class A Common Stock at a price of $225.00 per share, bringing his total post-transaction holdings to 4739 shares. The shares were received as part of the Issuer's annual equity compensation program for non-employee directors and are fully vested, as indicated by footnote F1. The filing also includes a Power of Attorney document authorizing representatives to act on behalf of Mr. Rahael for EDGAR filings.