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CME Group Shareholder Relations is available to answer administrative questions regarding your common Class A shares. You may contact via phone, email or mail:

Phone: +1 312 930 3484
Email: shareholder.relations@cmegroup.com

Mail:
CME Group Inc.
Shareholder Relations
20 South Wacker Drive
Chicago, IL 60606

For dividend payment information, direct deposit of dividends, address changes and other general inquiries, please contact our transfer agent, Computershare Investor Services.

Class B shareholders should contact the following:  

For confirmation statements, contact CME Group Membership Services Team
Phone: +1 312 435 3480
Email: Seatmarket@cmegroup.com

For questions including administrative questions regarding your CME Group Class B shares, contact CME Group Concierge Team
Phone: +1 312 435 3555
Email: Conciergeteam@cmegroup.com

For questions regarding voting at the CME Group annual meeting, including proxy materials and voting your Class B shares, email Annualmeeting@cmegroup.com.

Mail:
CME Group Inc.
Membership Services
20 South Wacker Drive
Chicago, IL 60606

Institutional investors should contact the CME Group Investor Relations Department. You may contact via phone, email or mail:

Phone: +1 312 466 7459
Email: investors@cmegroup.com

Mail:
CME Group Inc.
Investor Relations
20 South Wacker Drive
Chicago, IL 60606