CoStar Group (NASDAQ: CSGP) is the leading provider of commercial real estate information, analytics and marketing services. Founded in 1987, CoStar conducts expansive, ongoing research to produce and maintain the largest and most comprehensive database of commercial real estate information. Our suite of online services enables clients to analyze, interpret and gain unmatched insight on commercial property values, market conditions and current availabilities. Through LoopNet, the Company operates the most heavily trafficked commercial real estate marketplace online with more than 7 million registered members. CoStar operates websites that have over 9 million unique monthly visitors in aggregate. Headquartered in Washington, DC, CoStar maintains offices throughout the U.S. and in Europe with a staff of approximately 2,000 worldwide, including the industry's largest professional research organization. For more information, visit www.costar.com.