0000950133-02-002886 10-Q 5 20020630 20020813 COSTAR GROUP INC 0001057352 7374 522091508 DE 1231 10-Q 34 000-24531 02728755 2 BETHESDA METRO CENTER 10TH FLOOR BETHESDA MD 20814 3012158300 2 BETHESDA METRO CENTER BETHESDA MD 20814 10-Q 1 w62833e10vq.htm FORM 10-Q EX-10.1 3 w62833exv10w1.htm STOCK INCENTIVE PLAN EX-10.2 4 w62833exv10w2.htm OFFICE SUBLEASE EX-99.1 5 w62833exv99w1.htm CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-99.2 6 w62833exv99w2.htm CERTIFICATION OF CHIEF FINANCIAL OFFICER