Form 4 Filing for CME Group Inc. - Deborah J. Lucas

This filing reports a transaction by Deborah J. Lucas, a director at CME Group Inc. On June 25, 2026, Ms. Lucas acquired 645 shares of Class A Common Stock at a price of $225.00 per share. This acquisition was part of the company's annual equity compensation program for non-employee directors and the shares were fully vested upon issuance. Following this transaction, Ms. Lucas holds a total of 4533 shares of Class A Common Stock. The filing also includes a Power of Attorney document, authorizing attorneys-in-fact to manage EDGAR filings on behalf of Ms. Lucas.