0000950133-00-003418 10-Q 4 20000630 20000814 COSTAR GROUP INC 0001057352 7374 522091508 DE 1231 10-Q 34 000-24531 696879 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 3012158300 2 BETHESDA METRO CENTER BETHESDA MD 20814 10-Q 1 e10-q.txt FORM 10-Q EX-10.1 2 ex10-1.txt COSTAR GROUP, INC. 1998 STOCK INCENTIVE PLAN EX-10.2 3 ex10-2.txt EMPLOYMENT AGREEMENT FOR JOHN PLACE EX-27 4 ex27.txt FINANCIAL DATA SCHEDULE