Mr. Callahan has served as a director since March 2002 and is chair of the compensation committee as well as vice chair of the CBOT regulatory compliance committee. He is currently an independent trader. From December 1999 to July 2001, Mr. Callahan was a Managing Member of Callahan DPM, LLC at the CBOE. Mr. Callahan holds one Series B-1 (Full) membership in the CBOT.
