Investor Resources

Ernst & Young LLP

CoStar Group went public in 1998 and is traded on the NASDAQ under the symbol CSGP.

CoStar has never declared or paid any dividends on its common stock. The Company does not anticipate paying any dividends on its common stock during the foreseeable future, but intend to retain any earnings for future growth of its business.

American Stock Transfer & Trust Company, LLC’s Shareholder Services Team will be able to assist.
AST Call Center is open Monday through Friday, 8AM to 8PM ET.
Shareholder Services:
Help@astfinancial.com
(800) 937-5449 or (718) 921-8124
Teletypewriter for the hearing impaired:
(866) 703-9077
(718) 921-8386

CoStar maintains offices throughout the US, Europe and Canada, with a staff that includes the industry's largest professional research organization.

The reports CoStar Group files with or furnishes to the Securities and Exchange Commission, including its annual report, quarterly reports and current reports, as well as amendments to those reports, are available free of charge on CoStar Group’s Internet website as soon as reasonably practicable after CoStar Group electronically files such material with, or furnishes it to, the Securities and Exchange Commission. You may review and copy any of the information CoStar Group files with the Securities and Exchange Commission at the Commission's Public Reference Room at 100 F Street, NE, Washington, DC 20549. You may obtain information regarding the operation of the Public Reference Room by calling the Securities and Exchange Commission at 1-800-SEC-0330. The Securities and Exchange Commission maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the Commission at http://www.sec.gov.

CoStar Group’s CUSIP number is 22160N109.

We do not provide hard copies of annual documents. The 10k and proxy can be accessed in the Financials & Filings section.