CURRENT REPORT, ITEMS 2.02, 3.02, 8.01 AND 9.01

Company

COSTAR GROUP, INC.

Filed

July 22, 2009

Period of Report

July 17, 2009

Accession Number

0001057352-09-000054

An 8-K is a current report used to announce material events that shareholders should know about — such as earnings releases, mergers, executive changes, or bankruptcy. Learn more about 8-K filings →