Form 424B2 - Prospectus [Rule 424(b)(2)]:
SEC Accession No. 0000950123-11-054420
Filing Date
2011-05-26
Accepted
2011-05-26 16:12:08
Documents
3

Document Format Files

Seq Description Document Type Size
1 424(B)(2) w82658bbe424b2.htm 424B2 788433
2 GRAPHIC w82658bbx8265801.gif GRAPHIC 2416
3 GRAPHIC w82658bbw8265800a.gif GRAPHIC 3121
  Complete submission text file 0000950123-11-054420.txt   797308
Mailing Address 1331 L STREET NW WASHINGTON DC 20005
Business Address 1331 L STREET NW WASHINGTON DC 20005 2023466500
COSTAR GROUP INC (Filer) CIK: 0001057352 (see all company filings)

EIN.: 522091509 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 424B2 | Act: 33 | File No.: 333-174407 | Film No.: 11874220
SIC: 7389 Services-Business Services, NEC