ISE Announces New Board Member

18 April 2008

The International Securities Exchange (ISE) announced today that it has appointed Mark Dehnert to serve on the ISE Board of Directors as a representative of ISE's Electronic Access Members (EAMs). Mr. Dehnert replaces Randy Frederick who previously represented ISE EAMs on the Board, and will serve for his remaining one-year term.

Mr. Dehnert is responsible for the Quantitative Equities Trading businesses in the Securities Division of Goldman Sachs & Co. Prior to Goldman Sachs, he joined the Hull Group, now part of Goldman Sachs, as a financial engineer in 1992. He relocated from Chicago to Frankfurt in 1995, where he helped Hull build its electronic equity options trading system and businesses in Europe. Mr. Dehnert was named a principal at Hull in 1996. In 1997, he relocated to Hull's joint venture with Daiwa Securities in Tokyo, where he focused on the venture's launch into single stock options. In 1999, Mr. Dehnert returned to Chicago to take up his current responsibilities at Goldman Sachs and assist with Hull's ISE implementation. Mark became a managing director in 2000 and a partner in 2002. Mark earned BS and MBA degrees from Washington University in St. Louis.

"We are very pleased that Mark has agreed to join our Board of Directors on behalf of our EAMs," said Gary Katz, President and Chief Executive Officer of ISE. "We look forward to the insight and expertise he will contribute to ISE in this position."

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