Form 4 Filing for CME Group Inc. by Derek Sammann

This filing details transactions made by Derek Sammann, Sr MD Gl Hd Commodities Mkts at CME Group Inc. On May 25, 2026, there were dispositions and acquisitions of Common Stock Class A, with no price indicated, potentially related to a change in ownership form to indirect via a trust. On September 15, 2026, 2864 shares of Common Stock Class A were acquired at $275.09 per share. Additionally, on the same date, several dispositions of Common Stock Class A occurred at $275.09 per share, totaling 1056 shares, which appear to be related to tax withholding obligations upon vesting of restricted stock. A further disposition of 359 shares occurred on September 16, 2026, at $272.46 per share. The filing also includes a power of attorney authorizing certain individuals to act on Mr. Sammann's behalf for EDGAR filings.