Form 4 Filing for CME Group Inc.

This filing details transactions made by Lynne Fitzpatrick, President and CFO of CME Group Inc. On September 15, 2026, Fitzpatrick acquired 4088 shares of Class A Common Stock under a restricted stock grant vesting over four years, with a per-share price of $275.09. The filing also reports the disposal of shares to cover tax withholdings related to previously granted restricted stock. Specifically, 249 shares were disposed of at $275.09, another 275 shares at $275.09, and 457 shares at $275.09 on the same date. On September 16, 2026, an additional 359 shares were disposed of at $272.46 for tax withholding purposes. Following these transactions, Fitzpatrick’s post-transaction share count for Class A Common Stock is 26,661.