CME Group Director William R. Shepard Acquires Shares via Dividend Reinvestment Plan

Executive Summary

On September 28, 2026, CME Group Inc. Director William R. Shepard reported transactions involving Class A Common Stock across two categories:

1. Routine Dividend Reinvestment: On September 25, 2026, Shepard acquired 292.55 shares at $268.76 per share (~$78,626 total) through a broker-administered dividend reinvestment plan (DRIP).
2. Change in Form of Beneficial Ownership: On August 18, 2026, Shepard transferred 2,553.779 shares from direct ownership to his revocable living trust (exempt under Rule 16a-13).

Transaction Details

• Primary Purchase (Code P):
  • Date: September 25, 2026
  • Shares Acquired: 292.55
  • Price Per Share: $268.76
  • Transaction Value: $78,625.75
  • Beneficial Ownership: Indirect (by Trust)
• Trust Transfer (Code J):
  • Date: August 18, 2026
  • Shares Reallocated: 2,553.779 shares moved from direct to indirect ownership at $0.00.

Ownership Post-Transaction

• Direct Ownership: 1,067 shares
• Indirect Ownership (by Trust): 263,288.642 shares
• Total Beneficial Ownership: 264,355.642 shares

Market Impact & Significance

This filing carries Low trading significance. The reported open transaction represents automated dividend reinvestment rather than a discretionary open-market buy order, while the preceding transaction reflects an administrative change in beneficial ownership form for estate-planning purposes.