ISE Intl Secs Exchange Hldgs

The Board of Directors of the International Securities Exchange (NYSE:ISE) today declared a quarterly dividend of $0.05 per outstanding share of its Class A Common Stock. The dividend is payable on March 31, 2006, to holders of record as of the close of business on March 23, 2006. ISE Background The International Securities Exchange, the world's largest equity options exchange, was founded on the principle that technology fosters and infuses new efficiencies and operational innovations into securities trading. After developing an innovative market structure that integrated auction market principles into an advanced screen-based trading system, ISE launched the first fully electronic US options exchange in May 2000. ISE continually enhances its trading systems to provide investors with the best marketplace to execute their options orders. For more information about ISE, its products and its technology, visit www.iseoptions.com.