ISE Intl Secs Exchange Hldgs

The International Securities Exchange (NYSE: ISE) announced today that Mike Knesevitch has been appointed as Business Director, Alternative Markets. Mr. Knesevitch will head ISE's alternative markets business with primary responsibility for the commercialization and management of Longitude LLC, the recently announced derivatives platform acquisition. The alternative markets business falls within ISE's Corporate Initiatives division. Mr. Knesevitch has extensive industry experience with particular expertise in how changes in technology and regulation have redefined trading instruments. Most recently, he was Managing Partner at Advanced Solutions Group, a professional services company where he consulted to a range of trading industry clients, including Trade Exchange Network Limited, a Dublin based trading exchange. Previously, he worked at Digiterra and was an independent futures and options trader. Mr. Knesevitch has a B.S. in Chemical Engineering from the University of Pennsylvania and holds the Project Management Professional (PMP) designation from the Project Management Institute. ISE Background The International Securities Exchange (ISE) is an innovative securities market, founded on the principle that technology and competition create better, more efficient markets for investors. ISE is the largest equity options exchange and is among the leading options exchanges in the world. ISE developed a unique market structure for advanced screen-based trading systems and in May 2000 launched the first fully electronic US options exchange. The ISE Stock Exchange LLC will launch in the third quarter of 2006 with strategic partners, offering an innovative MidPoint Match platform, followed by a fully integrated displayed Best Bid Offer (BBO) market in the fourth quarter. ISE is also a majority owner of Longitude LLC, an innovative platform for events markets trading, and offers enhanced market data products for sophisticated investors. ISE continually enhances its trading systems and develops new products, including index options and market data, to provide investors with the best marketplace and investment tools to trade smarter. For more information about ISE, its options products and its technology, visit www.iseoptions.com and for more information about the ISE Stock Exchange LLC, visit www.isestock.com.