CSGP · CIK 0001057352
COSTAR GROUP, INC. (CSGP) SEC Filings
Browse 1529 SEC filings for COSTAR GROUP, INC., covering Mar 13, 1998 through Jul 13, 2026, organized by filing purpose with direct links to the original EDGAR documents.
Indexed filings
1,529
Filed in the last 12 months
84
History covered
1998–2026
Latest filing
8-K
Latest important filings
Jump directly to the most recent annual, quarterly, and current reports.
Latest annual report
10-K
Annual report · Feb 26, 2026
Open original filingLatest quarterly report
10-Q
Quarterly report · Apr 29, 2026
Open original filingLatest company update
8-K
Management or director change; Regulation FD disclosure · Jul 13, 2026
Open original filingComplete filing history
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50 filings
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Search by form or description, filter by purpose and year, and open the original SEC document.
| Form | Description | Period ended | Filed |
|---|---|---|---|
| 8-K | Management or director change; Regulation FD disclosure | Jul 7, 2026 | Jul 13, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 6, 2026 |
| 8-K | Management or director change; Shareholder vote; Regulation FD disclosure | Jun 23, 2026 | Jun 25, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 23, 2026 | Jun 24, 2026 |
| 4 | Change in insider ownership | Jun 15, 2026 | Jun 16, 2026 |
| 8-K | Material agreement; Regulation FD disclosure | May 28, 2026 | May 29, 2026 |
| SD | Specialized disclosure report | — | May 20, 2026 |
| DEFA14A | Additional proxy materials | — | May 18, 2026 |
| 4 | Change in insider ownership | May 1, 2026 | May 4, 2026 |
| ARS | ARS filing | Dec 31, 2025 | Apr 30, 2026 |
| DEFA14A | Additional proxy materials | — | Apr 30, 2026 |
| DEF 14A | Definitive proxy statement | Jun 23, 2026 | Apr 30, 2026 |
| SCHEDULE 13G | SCHEDULE 13G filing | — | Apr 29, 2026 |
| 10-Q | Quarterly report | Mar 31, 2026 | Apr 29, 2026 |
| SCHEDULE 13G | SCHEDULE 13G filing | — | Apr 29, 2026 |
| 8-K | Results of operations; Regulation FD disclosure | Apr 28, 2026 | Apr 28, 2026 |
| 3/A Amended | Initial insider ownership statement | Mar 25, 2025 | Apr 2, 2026 |
| SCHEDULE 13G/A Amended | SCHEDULE 13G filing | — | Mar 26, 2026 |
| 4/A Amended | Change in insider ownership | Mar 15, 2026 | Mar 17, 2026 |
Page 1 of 2
Recent filing activity
Annual filing counts derived from this company's SEC history.
2026
61 filings
2025
73 filings
2024
89 filings
2023
73 filings
2022
52 filings
2021
58 filings
2020
66 filings
2019
59 filings
Sources and methodology
How this filing index is assembled and checked.
Filing metadata comes from SEC EDGAR submissions. Categories and plain-language labels are generated deterministically from SEC form and item codes; filing content is not summarized on this page.
Index updated: 7/15/2026
For research and education only. Always review the original SEC filing before making a decision.