International Securities Exchange Announces Date Of Second Quarter 2005 Earnings Release And Conference Call

The International Securities Exchange (NYSE:ISE) announced today that it will issue its earnings release for the second quarter before the financial markets open on Thursday, July 28, 2005. The company will host a conference call at 11:00 a.m. (Eastern Daylight Time) to discuss the results with the investment community. All interested parties can listen to a live audio webcast that will be hosted on the Investor Relations section of the Company's web site at www.iseoptions.com. An investor presentation that will be referenced during the call will also be posted to the web site.

The conference call can also be accessed by calling (800) 435-1398 and dialing the participant passcode 30963972. Please reserve a line 15 minutes prior to the start of the conference call. The conference call replay will be available from 1:00 p.m. on July 28, 2005 until midnight on July 29, 2005 and can be accessed by calling (888) 286-8010 and dialing the participant passcode 61218887. An archived replay of the call will be available on the Investor Relations section of the Company's web site at www.iseoptions.com.