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Costar Group Inc
1201 Wilson Blvd.
Phone: (202) 346-6500p:202 346-6500 ARLINGTON, VA  22209  United States Ticker: CSGPCSGP
Business Summary
CoStar Group, Inc. is a provider of online real estate marketplaces, information, analytics, and three-dimensional (3D) digital twin technology in the property markets. The Company operates through two segments, which include Commercial Real Estate and Residential Real Estate. Its Commercial Real Estate segment offers commercial real estate information and analytics, online marketplaces, and 3D digital twin technology. Its brands include CoStar and LoopNet. Its CoStar offers subscription-based access to its platform of commercial real estate intelligence. Its LoopNet is a commercial real estate marketing site which enables property owners, landlords, and brokers to advertise properties for sale or lease on a site. Its Residential Real Estate segment hosts marketplaces which aggregate consumer demand for homes to rent or buy and sell marketing and leads to the agents, owners, landlords, and property management companies to reach consumers with offerings.
(Source: 6-K)

Scores and Ratings
FRISK®
Score		 Z''
Score		 PAYCE®
Score		 DBT
Index		 Moody's
Rating		 Fitch
Rating		 DBRS
Rating
YesYes-YesYesYes-

Financials, News and Filings
Latest
Statement		 Last
Audit
News		 SEC
Filings		 Bankruptcy
Filings		 Suit &
Judgment
Filings		 Tax
Lien
Filings
12/31/202512/31/2025YesYes-YesYes

Industries
SIC Code Description
7375 Information retrieval services
8999 Services, not elsewhere classified
7374 Computer processing and data preparation and processing services
7389 Business services, not elsewhere classified

Officers and Directors

Title
Name
Age		 Title
Date		 Start
Date
Independent Chairman of the Board Louise S.Sams 67 4/6/2025 12/12/2019
President, Chief Executive Officer, Founder, Director Andrew C.Florance 61 1/1/1995 1/1/1995
Chief Financial Officer Christian M.Lown 55 7/1/2024 7/1/2024
11 additional Officers and Directors records available in full report.

Subsidiaries
Business Name Address City State/Province Country
GLANTY LTD 4 PRINCE ALBERT ROAD LONDON UK
AGENTS' MUTUAL LIMITED PO BOX 450 155 - 157 HIGH STREET UK
Onthemarket Ltd 155-157 High Street, ALDERSHOT United Kingdom
17 additional Subsidiary records available in full report.

Business Names
Business Name
AcreValue Brokerage Services, LLC
AG-Analytics Technology Co., LLC
Ag-Analytics Technology Company, LLC
127 additional Business Names available in full report.

General Information
Number of Employees: 8,000 (As of 12/31/2025)
Outstanding Shares: 419,793,301 (As of 2/20/2026)
Shareholders: 1,620
Stock Exchange: NASD
Federal Tax Id: 522091509
Fax Number: (302) 636-5454
Email Address: info@costargroup.com


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Tuesday, March 24, 2026