2013 Annual Meeting of Stockholders
Thursday, May 23, 2013, at 9:30 a.m. CDT
Chicago Board Options Exchange
Fourth Floor Lounge
400 South LaSalle Street
Chicago, Illinois 60605
Your vote is important. To vote your proxy, please follow the instructions provided in the meeting notice that was mailed on or around April 4, 2013, to stockholders of record on March 26, 2013.
Please note that if you hold stock in different accounts, you may need to complete multiple proxy cards to vote all of your shares.
If you are a Registered Stockholder, you may vote your proxy online now by clicking the website link noted below. You must have your proxy card on hand to refer to the control number printed on the card.
You are a Registered Stockholder if your shares are held at our transfer agent, Computershare.
Registered stockholders may vote by proxy in one of the following three ways:
You are a Beneficial Stockholder if you maintain your position in the Company within a brokerage account.
If you hold your shares through a broker or other third party you may vote your proxy by internet, phone or mail by following the directions provided on the voting instruction form you received from your broker or other third party.
You may view the documents here: