0001057352-08-000090 8-K 3 20081029 2.02 9.01 20081030 20081029 COSTAR GROUP INC 0001057352 7389 522091509 1231 8-K 34 000-24531 081148814 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 3012158300 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 8-K 1 form_8k.htm CURRENT REPORT, ITEMS 2.02 AND 9.01 EX-99.1 2 press_release.htm PRESS RELEASE GRAPHIC 3 costarlogo-sml.jpg LOGO