PRESS RELEASE DETAIL


Jan 07, 2008

Commercial Property News Publisher Mark Klionsky Joins CoStar Management Team

2000-05-04 2000 Commercial Property News Publisher Mark Klionsky Joins CoStar Management Team Klionsky to Grow the Electronic Media Division by Leveraging Industry Des...

2000-05-04 2000 Commercial Property News Publisher Mark Klionsky Joins CoStar Management Team Klionsky to Grow the Electronic Media Division by Leveraging Industry Desire To Market Properties and Services Online

BETHESDA, MD -- CoStar Group (Nasdaq: CSGP) announced today that Mark Klionsky, publisher of leading industry publication Commercial Property News, joins CoStar's management team as Senior Vice President of Electronic Media.

"Mark is a key player in the commercial real estate industry, having grown Commercial Property News and its programs into a powerful brand throughout the industry," said CoStar CEO Andrew C. Florance. "With the industry rushing to market their properties and services online, Mark will be here to grow this advertising revenue stream into additional value for the company."

Klionsky will oversee the advertising sales and editorial teams, leveraging CoStar's existing comprehensive information products, including news content, to promote online advertising in CoStar Marketplace™. CoStar's goal is to create new tools and content such as an Internet newsletter and in-depth features including market profiles, trends and analysis -- with the intent of making CoStar the first, and only, true e-zine covering commercial real estate.

"Given that CoStar's products are used by over 7,500 firms representing the most active companies in commercial real estate, it makes sense to leverage such an attractive marketplace and allow our customers to market properties and services to this targeted audience while simultaneously generating advertising revenue for CoStar," said Florance. "Mark's 19 years of building advertising and other revenue for a premier industry publication makes him the perfect person to execute this initiative."

Klionsky joins CoStar Group after 19 years in business-to-business media, including 13 years of specializing in commercial real estate at Miller Freeman Inc., the U.S. subsidiary of United News & Media, plc. Klionsky most recently served as Senior Vice President and Group Publisher of Miller Freeman's Real Estate, Building, Design, Travel and Wood Technology groups, where he managed a portfolio consisting of 14 magazines, five newsletters, 12 web sites, seven trade shows and 30 conferences. In addition, he served on Miller Freeman USA's Board of Directors and was Chairman of the New York division's management committee, the company's largest operating unit.

Klionsky began his professional career in 1981 as an editor at Gralla Publications, a United News & Media subsidiary that later merged with Miller Freeman. There, he held editorial positions covering a variety of commercial and financial industries, and in 1987, he joined the launch team for Commercial Property News. Under his leadership as Editor-in-Chief and Publisher, Commercial Property News became the real estate industry's premier newsmagazine.

Headquartered in Bethesda, MD, CoStar Group, Inc. (Nasdaq: CSGP), is the leading provider of information services to the U.S. commercial real estate industry. CoStar's suite of products offers customers access via the Internet to the most comprehensive, verified database of commercial real estate information in over 50 U.S. markets. The company has more than 1,000 employees and contractors nationally, including over 700 highly trained commercial real estate research professionals in 27 offices. For more information, please visit http://www.costargroup.com.

This news release includes "forward-looking statements," which involve many risks and uncertainties that could cause actual results to differ materially from these statements. Important factors that could cause actual results to differ materially include, but are not limited to, those stated in CoStar's Form 10-K for the year ended December 31, 1999. In addition, there can be no assurance that CoStar's electronic media division will be successful, will contain the features described herein or that CoStar's advertising revenues will increase or result in additional value for the company.
'