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Report Concerns

Any stockholder or other interested party who has a concern, inquiry or complaint, or would otherwise like to communicate regarding the Company's accounting, internal accounting controls or auditing matters, may communicate directly to the Audit Committee. The chair of the Audit Committee will receive all communications on behalf of the Audit Committee. Any communications should be submitted in writing to the chair of the Audit Committee in care of the secretary of the Company at the address set forth below, or should be submitted via e-mail as noted below:

CBOE Holdings, Inc.
400 South LaSalle Street
Chicago, IL 60605
Attention: Corporate Secretary

Email: corporatesecretary@cboe.com

If desired, communications may be submitted on an anonymous basis. All communications will be received and processed by the Company's secretary and all substantive communications will be referred to the chair of the Audit Committee.

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