Annual report (10-K)Quarterly report (10-Q)Current report (8-K)Auditor changeCEO, CFO, COO or CAO changeRestatementLate filing noticeInsider purchaseCluster buy (3+ insiders)SEC comment letterShare offering (S-3, 424B)
All 30 events
- Oct 28, 202610-Q Quarterly report (10-Q) period ended Sep 30, 2026
- Oct 27, 20268-K Material agreement signed, Quarterly results, Regulation FD disclosure 8-K items 1.01, 2.02, 7.01
- Aug 21, 20268-K Regulation FD disclosure 8-K item 7.01
- Aug 5, 2026Buy FLORANCE ANDREW C (Founder and CEO) bought $2.5M open-market purchase on Aug 4, 2026
- Jul 29, 202610-Q Quarterly report (10-Q) period ended Jun 30, 2026
- Jul 28, 20268-K Quarterly results 8-K item 2.02
- Jul 13, 2026Officer CFO change (the “Company” or “CoStar Group”) appointed Robin Rossmann to serve as the Company’s Chief Financial Officer, effective July 31, 2026 (“Effective Date”).
- Jun 25, 20268-K Director or officer change, Shareholder vote results, Regulation FD disclosure 8-K items 5.02, 5.07, 7.01
- May 29, 20268-K Material agreement signed, Regulation FD disclosure 8-K items 1.01, 7.01
- May 4, 2026Buy FLORANCE ANDREW C (President and CEO) bought $2.5M open-market purchase on May 1, 2026
- Apr 29, 202610-Q Quarterly report (10-Q) period ended Mar 31, 2026
- Apr 28, 20268-K Quarterly results, Regulation FD disclosure 8-K items 2.02, 7.01
- Mar 16, 20268-K Director or officer change, Regulation FD disclosure 8-K items 5.02, 7.01
- Feb 26, 202610-K Annual report (10-K) period ended Dec 31, 2025
- Feb 24, 20268-K Quarterly results, Regulation FD disclosure 8-K items 2.02, 7.01
- Feb 13, 20268-K Director or officer change 8-K item 5.02
- Jan 7, 20268-K Director or officer change, Regulation FD disclosure 8-K items 5.02, 7.01
- Oct 29, 202510-Q Quarterly report (10-Q) period ended Sep 30, 2025
- Oct 28, 20258-K Quarterly results, Regulation FD disclosure 8-K items 2.02, 7.01
- Aug 27, 20258-K Regulation FD disclosure 8-K item 7.01
- Jul 23, 202510-Q Quarterly report (10-Q) period ended Jun 30, 2025
- Jul 22, 20258-K Quarterly results, Regulation FD disclosure 8-K items 2.02, 7.01
- Jun 27, 20258-K Director or officer change, Shareholder vote results 8-K items 5.02, 5.07
- May 9, 20258-K Material agreement signed, Regulation FD disclosure 8-K items 1.01, 7.01
- May 1, 202510-Q Quarterly report (10-Q) period ended Mar 31, 2025
- Apr 29, 20258-K Quarterly results 8-K item 2.02
- Apr 7, 20258-K Material agreement signed, Director or officer change, Regulation FD disclosure 8-K items 1.01, 5.02, 7.01
- Feb 28, 20258-K Acquisition or sale of assets completed, Regulation FD disclosure 8-K items 2.01, 7.01
- Feb 20, 202510-K Annual report (10-K) period ended Dec 31, 2024
- Feb 18, 20258-K Quarterly results, Regulation FD disclosure 8-K items 2.02, 7.01
From the SEC filing index. Insider purchases go back 180 days (the Form 4s downloaded).
Every filing CSGP made with the SEC since Jun 3, 2011, newest first, linked to the document on sec.gov. Press releases with quarterly results are attached to the 8-Ks marked "Quarterly results".
All 1002
Annual & quarterly 62Current reports (8-K) 137Insiders 614Proxy & votes 37Big owners (13D/13G) 80Shares & debt offered 23SEC letters 19Other 30
| Filed | Form | What it is | Period | |
|---|---|---|---|---|
| Oct 28, 2026 | 10-Q | Quarterly report | Sep 30, 2026 | all files · tables |
| Oct 27, 2026 | 8-K | Material agreement signed, Quarterly results, Regulation FD disclosure | Oct 27, 2026 | all files |
| Oct 16, 2026 | 4 | Insider trade | Oct 15, 2026 | all files |
| Aug 21, 2026 | 8-K | Regulation FD disclosure | Aug 21, 2026 | all files |
| Aug 14, 2026 | SCHEDULE 13G | 5%+ owner (passive) | all files | |
| Aug 10, 2026 | 4 | Insider trade | Aug 7, 2026 | all files |
| Aug 10, 2026 | 4 | Insider trade | Aug 5, 2026 | all files |
| Aug 5, 2026 | 144 | Notice of planned insider sale | all files | |
| Aug 5, 2026 | 4 | Insider trade | Aug 4, 2026 | all files |
| Aug 4, 2026 | 4 | Insider trade | Jul 31, 2026 | all files |
| Aug 4, 2026 | 3 | New insider | Jul 31, 2026 | all files |
| Aug 4, 2026 | 4 | Insider trade | Aug 1, 2026 | all files |
| Aug 4, 2026 | 4 | Insider trade | Jul 31, 2026 | all files |
| Jul 29, 2026 | S-8 | Shares registered for employee plans | all files | |
| Jul 29, 2026 | 10-Q | Quarterly report | Jun 30, 2026 | all files · tables |
| Jul 28, 2026 | 8-K | Quarterly results | Jul 28, 2026 | all files |
| Jul 13, 2026 | 8-K | Director or officer change, Regulation FD disclosure | Jul 7, 2026 | all files |
| Jul 6, 2026 | 4 | Insider trade | Jul 1, 2026 | all files |
| Jun 25, 2026 | 8-K | Director or officer change, Shareholder vote results, Regulation FD disclosure | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 24, 2026 | 4 | Insider trade | Jun 23, 2026 | all files |
| Jun 16, 2026 | 4 | Insider trade | Jun 15, 2026 | all files |
| May 29, 2026 | 8-K | Material agreement signed, Regulation FD disclosure | May 28, 2026 | all files |
| May 20, 2026 | SD | Conflict minerals report | all files | |
| May 18, 2026 | DEFA14A | Extra proxy material | all files | |
| May 4, 2026 | 4 | Insider trade | May 1, 2026 | all files |
| Apr 30, 2026 | ARS | Annual report to shareholders | Dec 31, 2025 | all files |
| Apr 30, 2026 | DEFA14A | Extra proxy material | all files | |
| Apr 30, 2026 | DEF 14A | Proxy statement | Jun 23, 2026 | all files |
| Apr 29, 2026 | SCHEDULE 13G | 5%+ owner (passive) | all files | |
| Apr 29, 2026 | SCHEDULE 13G | 5%+ owner (passive) | all files | |
| Apr 29, 2026 | 10-Q | Quarterly report | Mar 31, 2026 | all files · tables |
| Apr 28, 2026 | 8-K | Quarterly results, Regulation FD disclosure | Apr 28, 2026 | all files |
| Apr 2, 2026 | 3/A | New insider (amended) | Mar 25, 2025 | all files |
| Mar 26, 2026 | SCHEDULE 13G/A | 5%+ owner (passive), amended | all files | |
| Mar 17, 2026 | 4 | Insider trade | Mar 15, 2026 | all files |
| Mar 17, 2026 | 4 | Insider trade | Mar 15, 2026 | all files |
| Mar 17, 2026 | 4/A | Insider trade (amended) | Mar 15, 2026 | all files |
| Mar 17, 2026 | 4 | Insider trade | Mar 15, 2026 | all files |
| Mar 17, 2026 | 4 | Insider trade | Mar 15, 2026 | all files |
| Mar 17, 2026 | 3 | New insider | Mar 15, 2026 | all files |
| Mar 17, 2026 | 4 | Insider trade | Mar 15, 2026 | all files |
| Mar 16, 2026 | 8-K | Director or officer change, Regulation FD disclosure | Mar 15, 2026 | all files |
| Mar 11, 2026 | 4 | Insider trade | Mar 10, 2026 | all files |
| Mar 11, 2026 | 4 | Insider trade | Mar 10, 2026 | all files |
| Mar 11, 2026 | 4 | Insider trade | Mar 10, 2026 | all files |
| Mar 11, 2026 | 4 | Insider trade | Mar 10, 2026 | all files |
| Mar 11, 2026 | 4 | Insider trade | Mar 10, 2026 | all files |
| Mar 9, 2026 | 4 | Insider trade | Mar 6, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Mar 1, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Mar 2, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 3, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Mar 2, 2026 | 4 | Insider trade | Feb 27, 2026 | all files |
| Feb 26, 2026 | 10-K | Annual report | Dec 31, 2025 | all files · tables |
| Feb 24, 2026 | 8-K | Quarterly results, Regulation FD disclosure | Feb 24, 2026 | all files |
| Feb 23, 2026 | 4 | Insider trade | Feb 19, 2026 | all files |
| Feb 23, 2026 | 4 | Insider trade | Feb 19, 2026 | all files |
| Feb 23, 2026 | 4 | Insider trade | Feb 19, 2026 | all files |
| Feb 23, 2026 | 4 | Insider trade | Feb 19, 2026 | all files |
| Feb 18, 2026 | 4 | Insider trade | Feb 15, 2026 | all files |
| Feb 18, 2026 | 4 | Insider trade | Feb 15, 2026 | all files |
| Feb 18, 2026 | 4 | Insider trade | Feb 15, 2026 | all files |
| Feb 18, 2026 | 4 | Insider trade | Feb 15, 2026 | all files |
| Feb 13, 2026 | 8-K | Director or officer change | Feb 13, 2026 | all files |
| Jan 7, 2026 | 8-K | Director or officer change, Regulation FD disclosure | Jan 7, 2026 | all files |
| Nov 17, 2025 | 4 | Insider trade | Nov 13, 2025 | all files |
| Nov 17, 2025 | 4 | Insider trade | Nov 13, 2025 | all files |
| Nov 13, 2025 | 144 | Notice of planned insider sale | all files | |
| Oct 29, 2025 | 10-Q | Quarterly report | Sep 30, 2025 | all files · tables |
| Oct 28, 2025 | 8-K | Quarterly results, Regulation FD disclosure | Oct 28, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 11, 2025 | 4 | Insider trade | Sep 9, 2025 | all files |
| Sep 2, 2025 | 4 | Insider trade | Aug 28, 2025 | all files |
| Aug 28, 2025 | 144 | Notice of planned insider sale | all files | |
| Aug 27, 2025 | 8-K | Regulation FD disclosure | Aug 27, 2025 | all files |
| Aug 5, 2025 | 4 | Insider trade | Aug 1, 2025 | all files |
| Aug 5, 2025 | 4 | Insider trade | Aug 1, 2025 | all files |
| Jul 29, 2025 | 4 | Insider trade | Jul 28, 2025 | all files |
| Jul 29, 2025 | 4 | Insider trade | Jul 28, 2025 | all files |
| Jul 28, 2025 | 144 | Notice of planned insider sale | all files | |
| Jul 23, 2025 | S-8 | Shares registered for employee plans | all files | |
| Jul 23, 2025 | 10-Q | Quarterly report | Jun 30, 2025 | all files · tables |
| Jul 22, 2025 | 8-K | Quarterly results, Regulation FD disclosure | Jul 22, 2025 | all files |
From SEC's filing index (data.sec.gov submissions).
Work on CSGP in a spreadsheet:
Excel workbook (a sheet per section, ten years by column, charts, links to the filings) ·
CSV.
For a Google Sheet that stays up to date, paste =IMPORTDATA("https://tickdelta.com/company/CSGP/export.csv") into a cell.