CME Group Director William R. Shepard Receives Equity Compensation and Dividend Reinvestment

This Form 4 filing reports equity transactions by CME Group Inc. director William R. Shepard on June 25, 2026. Shepard received 645 fully vested shares of Class A Common Stock as part of the company's annual equity compensation program for non-employee directors under the CME Group Director Stock Plan. He also elected to receive 422 shares in lieu of a portion of his annual cash retainer for board service, with the number determined by dividing the retainer by the closing price on the grant date. Additionally, Shepard acquired 14.318 shares through a broker-administered dividend reinvestment plan in his direct holdings, and 324.782 shares through the same plan in indirect holdings via a trust. Following these transactions, Shepard's direct holdings increased to 3,620.768 shares, while his indirect holdings through the trust reached 260,442.322 shares. The filing includes a power of attorney document authorizing company representatives to file Section 16 reports on Shepard's behalf.