Form 4 Filing for CME Group Inc. by Michael G. Dennis

This filing details transactions of Common Stock Class A by Michael G. Dennis, Global Head of Fixed Income at CME Group Inc. On September 15, 2026, 2592 shares were acquired at $275.09 per share, followed by the disposal of 274 shares at the same price. On September 16, 2026, an additional 274 shares were disposed of at $272.46 per share. Following these transactions, Mr. Dennis holds 10682.3766 shares directly. Additionally, 40.81 shares are held indirectly by his spouse. The filing also includes a Power of Attorney document authorizing representatives to handle EDGAR filings on behalf of Mr. Dennis.