Costar Group, Inc. SEC filings CSGP
Costar Group, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Jun 7, 2011. Its latest annual report, Form ARS, was filed on Apr 30, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (material agreement, results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SD | Specialized disclosure (conflict minerals) | May 20, 2026 | — |
| EFFECT | Filing | Jun 10, 2024 | — |
| CORRESP | Letter to the SEC | Jun 7, 2024 | — |
| UPLOAD | Letter from the SEC | May 30, 2024 | — |
| 425 | Filing | Apr 24, 2024 | — |
| 425 | Filing | Apr 24, 2024 | — |
| 425 | Filing | Apr 22, 2024 | — |
| PX14A6G | Filing | May 12, 2023 | — |
| 425 | Filing | Mar 1, 2021 | — |
| 425 | Filing | Feb 24, 2021 | — |
| 425 | Filing | Feb 16, 2021 | — |
| UPLOAD | Letter from the SEC | Sep 30, 2015 | — |
| CORRESP | Letter to the SEC | Jul 16, 2015 | — |
| UPLOAD | Letter from the SEC | Jul 2, 2015 | — |
| UPLOAD | Letter from the SEC | Oct 11, 2013 | — |
| CORRESP | Letter to the SEC | Oct 4, 2013 | — |
| UPLOAD | Letter from the SEC | Sep 25, 2013 | — |
| CORRESP | Letter to the SEC | Aug 30, 2013 | — |
| UPLOAD | Letter from the SEC | Aug 20, 2013 | — |
| CORRESP | Letter to the SEC | Jul 16, 2013 | — |
| UPLOAD | Letter from the SEC | Jul 2, 2013 | — |
| UPLOAD | Letter from the SEC | Oct 18, 2012 | — |
| CORRESP | Letter to the SEC | Oct 4, 2012 | — |
| UPLOAD | Letter from the SEC | Sep 21, 2012 | — |
| CORRESP | Letter to the SEC | Sep 7, 2012 | — |
| UPLOAD | Letter from the SEC | Aug 30, 2012 | — |
| CORRESP | Letter to the SEC | Aug 14, 2012 | — |
| UPLOAD | Letter from the SEC | Aug 7, 2012 | — |
| 425 | Current report, items 1.01, 2.01, 2.03, 8.01, 9.01 | Apr 30, 2012 | — |
| 425 | Current report, item 8.01 | Apr 26, 2012 | — |
| 425 | Current report, items 2.02, 9.01 | Apr 26, 2012 | — |
| 425 | Current report, item 8.01 | Apr 17, 2012 | — |
| 425 | Current report, items 1.01, 2.02, 2.03, 9.01 | Feb 23, 2012 | — |
| 425 | Current report, item 8.01 | Jan 31, 2012 | — |
| 425 | Current report, item 8.01 | Jan 4, 2012 | — |
| 425 | Current report, item 8.01 | Nov 4, 2011 | — |
| 425 | Current report, items 2.02, 8.01, 9.01 | Oct 27, 2011 | — |
| 425 | Current report | Jul 11, 2011 | — |
| 425 | Current report, item 8.01 | Jul 1, 2011 | — |
Showing 39 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Services-Business Services, NEC (SIC 7389)
- Listed as
- CSGP (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Arlington, VA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1057352
- Former names
- COSTAR GROUP, INC. (until Oct 28, 2026); COSTAR GROUP INC (until Jun 25, 2019); REALTY INFORMATION GROUP INC (until May 5, 1999)
Other Services-Business Services, NEC companies
- Visa Inc. V
- Mastercard Inc MA
- Alibaba Group Holding Ltd BABA
- Accenture plc ACN
- Uber Technologies, Inc UBER
- PDD Holdings Inc. PDD
- Mercadolibre Inc MELI
- DoorDash, Inc. DASH
Source: SEC EDGAR filings. This is company-reported data, not investment advice.