ITEM 8.01 OTHER EVENTS

Company

COSTAR GROUP, INC.

Filed

October 20, 2009

Period of Report

October 19, 2009

Accession Number

0001057352-09-000069

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 →