CME GROUP INC.

CME Group Inc. announced a leadership transition where Terrence A. Duffy will step down as Chairman and CEO to become Executive Chairman, effective March 1, 2027. Lynne C. Fitzpatrick, current President and CFO, will succeed Mr. Duffy as CEO and join the Board of Directors. The company will also begin a search for a new Chief Financial Officer. Ms. Fitzpatrick's new compensation package includes an annual base salary of $1.2 million, an annual bonus opportunity of 200% of her base salary, and an annual long-term incentive opportunity of 700% of her base salary.

CME GROUP INC. executed Amendment No. 11 to its Credit Agreement, dated April 22, 2026, which amends and consolidates the existing credit facility from November 2, 2017. This amendment integrates previous modifications into a new Consolidated Form Credit Agreement and related annexes. The agreement involves Bank of America, N.A. as Administrative Agent and Citibank, N.A. as Collateral Agent, and includes provisions for new banks to join and for the reallocation of Applicable Tranche Commitments among all participating banks.

CME Group Inc.'s Chief Executive Officer, Terrence A. Duffy, and President and Chief Financial Officer, Lynne Fitzpatrick, have certified the company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2026. This certification, made pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, affirms that the report fully complies with the Securities Exchange Act of 1934 and fairly presents the company's financial condition and results of operations in all material respects.

CME Group Inc. announced the release of its financial results for the quarter ended March 31, 2026. The company issued a press release on April 22, 2026, detailing these results. The release, attached as Exhibit 99.1, includes both GAAP and non-GAAP financial measures, with management stating that non-GAAP figures offer important supplemental information and comparability with prior reports.