COSTAR GROUP, INC. — Investor Relations & Filings
CoStar Group, Inc. is a provider of online real estate marketplaces, information, and analytics. The company's core mission is to digitize the world's real estate by offering a comprehensive suite of services that includes property data, market analytics, and 3D digital twin technology. These tools are designed to empower clients with the insights and connections needed to improve business decisions related to property investment and leasing. CoStar Group's platforms serve as a primary resource for professionals across the commercial real estate landscape, delivering verified information and online marketplaces to facilitate transactions and market analysis.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| SD | 2026-05-20 | English | |
| DEFA14A | 2026-05-18 | English | |
| 10-Q - COSTAR GROUP, INC. (0001057352) (Filer) | 2026-04-29 | English | |
| SCHEDULE 13G/A - COSTAR GROUP, INC. (0001057352) (Subject) | 2026-03-26 | English | |
| 4/A - COSTAR GROUP, INC. (0001057352) (Issuer) | 2026-03-17 | English | |
| 4 - COSTAR GROUP, INC. (0001057352) (Filer) | 2026-03-04 | English |
Browse filings by year
17 yearsMarket data
Market data not available
Price history
Peer group · Web search portals activities and other information service activities
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COSTAR GROUP, INC. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/30100/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=30100 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=30100 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=30100 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 30100}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for COSTAR GROUP, INC. (id: 30100)"
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