Transfer Agent

Computershare is the transfer agent, registrar and dividend disbursing agent for CBOE Holdings, Inc.

Registered shareholders should contact Computershare regarding account inquiries or address changes using one of the methods below.

By Telephone:
Inside U.S. call toll free: (866) 301-8223
Outside of the U.S. dial: (201) 680-6578
Representatives are available Monday-Friday 9:00 a.m. to 7:00 p.m. ET.
Automated voice response is available 24 hours a day, seven days a week with holder account number.

By Internet:
www.computershare.com/investor If you hold your shares through a brokerage firm, please contact your broker.