Form 4 Filing for CME Group Inc.

This filing reports a transaction by Martin J. Gepsman, a director at CME Group Inc., on June 25, 2026. Gepsman acquired 645 shares of Class A Common Stock at a price of $225 per share, increasing his post-transaction holdings to 25,644 shares. The acquired shares were part of the company's annual equity compensation program for non-employee directors and were fully vested at the time of the grant, as indicated by footnote F1. The filing also includes a power of attorney document, authorizing representatives to handle EDGAR filings on behalf of Gepsman.