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As CoStar Group, Inc. (Nasdaq:CSGP) announced during its Third Quarter 2008 Earnings Conference call held on Thursday, October 30, 2008, it has formally withdrawn its proposal to acquire all the outstanding shares of REIS, Inc. for $8.75 per share in cash.

CoStar Group, Inc. (Nasdaq: CSGP), the number one provider of information/marketing services to the commercial real estate industry, today announced that its third quarter 2008 net income increased 104% to $6.6 million, or $0.34 per diluted share, compared to $3.3 million, or $0.17 per diluted share for the same period a year ago.

CoStar Group, Inc. (Nasdaq:CSGP), the number one provider of information/marketing services to the commercial real estate industry, today announced it has been recognized as one of the fastest growing technology companies by Deloitte's Technology Fast 50 for Maryland. With its selection, CoStar becomes one of only two Maryland-based companies to be ranked among the 50 fastest growing technology, media, telecommunications, and life sciences companies for 10 consecutive years.

CoStar Group, Inc. (Nasdaq:CSGP), the number one provider of information/marketing services to the commercial real estate industry, will announce its third quarter 2008 financial results following the market close on Wednesday, October 29, 2008. Management will hold an investor conference call to discuss the quarterly results and the company's outlook for the fourth quarter at 11:00 AM EDT on Thursday, October 30th.

CoStar Group, Inc. (Nasdaq: CSGP) today announced that it has made a proposal to REIS, Inc. (Nasdaq: REIS), a provider of commercial real estate market information based in New York, NY, to acquire all the fully diluted shares of REIS common stock for a per share consideration of $8.75, all cash with no financing contingency. The all cash proposal represents a premium of approximately 97% above the closing price of REIS common stock on August 12, 2008.

CoStar Group, Inc. (Nasdaq:CSGP), the number one provider of information/marketing services to the commercial real estate industry, today announced the appointment of Michael J. Glosserman by the Board of Directors to serve on CoStar's Audit Committee. As previously announced, Glosserman was elected to the Board of Directors at CoStar Group's 2008 Annual Stockholders Meeting held on June 10.

CoStar Group, Inc. (Nasdaq: CSGP), the number one provider of information/marketing services to the commercial real estate industry, today announced that its second quarter 2008 net income increased 363% to $5.4 million, or $0.28 per diluted share, compared to $1.2 million, or $0.06 per diluted share for the same period a year ago. EBITDA (earnings before interest, taxes, depreciation and amortization) for the second quarter of 2008 was $12.8 million, an increase of 204% compared to EBITDA of $4.2 million for the second quarter of 2007.

CoStar Group, Inc. (Nasdaq: CSGP), the number one provider of information/ marketing services to the commercial real estate industry, will announce its second quarter 2008 financial results following the market close on Tuesday, July 15, 2008. Management will conduct a conference call to discuss the quarterly results and the company's outlook for the third quarter at 11:00 AM EDT on Wednesday, July 16.

CoStar Group, Inc. (Nasdaq: CSGP), the number one provider of commercial real estate information/marketing solutions, today announced the promotion of John L. Stanfill to Senior Vice President of Sales and Customer Service.  Stanfill, who previously served as Senior Vice President of Marketing and Product Management, will continue to report directly to Andrew C. Florance, the company's Founder and Chief Executive Officer, in his newly expanded role on CoStar's executive management team.

CoStar Group, Inc. (Nasdaq: CSGP), the number one provider of commercial real estate information/marketing solutions, today announced that CoStar’s stockholders elected Michael J. Glosserman to serve on CoStar's Board of Directors. The election was held at CoStar’s 2008 Annual Stockholders Meeting at its headquarters in Bethesda, Maryland.