CME GROUP INC

On February 18, 2025, Jonathan Marcus, Senior Managing Director and General Counsel adopted a trading plan intended to satisfy the affirmative defense of Rule 10b5-1(c). The plan provides for the potential sale of up to 6,568 shares of the company's Class A common stock. The actual number of shares sold under Mr. Marcus' plan will depend on the number of shares delivered at the time that certain of his equity awards vest during the term of the plan following the fulfillment of tax withholding obligations and subject to other conditions as set forth in the plan. The plan expires on March 31, 2026 or upon the earlier completion of all authorized transactions under the plan. In determining the number of shares that may be sold under the plan it is assumed that the performance shares vesting during the plan vest at target.