Form 4 Filing for CME Group Inc.

This filing details a transaction by Dennis Suskind, a director at CME Group Inc., involving 645 shares of Class A Common Stock acquired on June 25, 2026, at a price of $225.00 per share. This acquisition, part of the annual equity compensation program for non-employee directors, brings Suskind's post-transaction holdings to 3,344 shares. The shares were fully vested at the time of the grant and are not subject to further vesting conditions. The filing also includes a power of attorney document authorizing representatives to act on Suskind's behalf for SEC filings.