Form 4 Filing for CME Group Inc. - Officer Transaction

Jonathan L. Marcus, Sr. MD General Counsel at CME Group Inc., reported a series of transactions on March 15, 2026. He acquired 5,270 shares of Common Stock Class A upon the vesting of performance shares granted in 2022, with the number of shares determined by the company's total shareholder return relative to the S&P 500 over a three-year period ending December 31, 2025. Concurrently, Marcus surrendered 2,377 shares to fulfill tax withholding obligations related to this award. Additionally, he surrendered 261 shares to cover tax withholding obligations upon the vesting of restricted stock on the same date. These transactions were executed at a price of $311.40 per share. Following these transactions, Marcus directly owns 10,483 shares of Common Stock Class A.