CoStar Group, Inc. www.costargroup.com is the leading provider of information services to the U.S. commercial real estate industry. CoStar's suite of products offers customers the most comprehensive, verified database of commercial real estate information in 54 U.S. markets. The company's Internet strategy is driven by its commitment to harness dynamic technologies and deliver an unprecedented level of information to its customers. Additionally, with annual revenue growth in excess of 100%, CoStar has demonstrated its ability to execute on its growth strategy and deliver exceptional returns to its shareholders. CoStar's goal is to create a marketplace that will offer participants real time pricing, increased efficiency, reduced risk and improved liquidity, resulting in increased valuations for their real estate assets.

CoStar Exchange(tm), the newest product, is an interactive professional marketplace, with over 50,000 for sale properties, and enables brokers to electronically package and market commercial and investment properties on-line. Brokers and sellers can distribute property information confidentially to a targeted list of buyers. The CoStar Exchange marketplace enables a larger and more qualified universe of buyers and sellers to evaluate full offering details faster, thus helping them to complete the initial underwriting process more efficiently and cost effectively, all online through the Internet.