0000950133-00-003876 8-K 2 20000926 5 7 20000926 COSTAR GROUP INC 0001057352 7374 522091508 DE 1231 8-K 34 000-24531 728702 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 3012158300 2 BETHESDA METRO CENTER BETHESDA MD 20814 8-K 1 w40702e8-k.txt FORM 8-K FOR COSTAR GROUP, INC. EX-99.1 2 w40702ex99-1.txt PRESS RELEASE