ISE Hires New Business Director for Alternative Markets

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.