CME Group Director Martin J. Gepsman Files Form 144 to Sell 400 Shares

Executive Summary

On October 22, 2026, CME Group Inc. Director Martin J. Gepsman filed a Form 144 with the SEC indicating an intention to sell 400 shares of CME Group common stock through Morgan Stanley Smith Barney LLC. The estimated aggregate market value of the proposed transaction is $121,000.00, representing an implied share price of approximately $302.50.

Transaction & Position Details

• Security: Common Stock
• Number of Shares Proposed to be Sold: 400
• Aggregate Market Value: $121,000.00
• Securities Outstanding: 359,576,125 shares
• Relative Size: Negligible (<0.0001% of outstanding shares)
• Origin of Securities: Restricted stock acquired from the issuer on June 25, 2026.
• Past 3 Months Activity: Filer reported no other sales during the preceding 3 months.

Market Impact & Significance

The transaction is categorized as Low significance due to the modest monetary amount ($121,000) and the de minimis percentage of total shares outstanding. This transaction appears to be a routine liquidation of vested director equity compensation and does not indicate a shift in fundamental sentiment.