# Costar Group, Inc.: filings

CSGP · Nasdaq · CIK 1057352 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/csgp.md) · [Financials](/companies/csgp/financials.md) · [Filings](/companies/csgp/filings.md) · [Insiders](/companies/csgp/insiders.md)

## Reports and events: 252 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 663, 8-K 157, SC 13G/A 70, 10-Q 54, 144 25, 425 25, 3 23, SC 13G 21, 10-K 18, DEF 14A 18, DEFA14A 18, UPLOAD 14, ARS 11, CORRESP 11, 424B2 10, S-8 9, 5 6, 4/A 4, S-3ASR 4, 8-K/A 3, PRE 14A 3, SCHEDULE 13G 3, 424B3 2, EFFECT 2, FWP 2, S-4 2, S-4/A 2, SCHEDULE 13G/A 2, 10-K/A 1, 3/A 1, PX14A6G 1, SC 13D 1, SD 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-28 | 17:11 ET | [10-Q](/filings/0001057352-26-000083.md) | Quarterly report, period 2026-09-30 | 0001057352-26-000083 |
| 2026-10-27 | 16:05 ET | [8-K](/filings/0001057352-26-000078.md) | 1.01 Entry into a material agreement; 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000078 |
| 2026-08-21 | 16:03 ET | [8-K](/filings/0001057352-26-000072.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000072 |
| 2026-07-29 | 16:06 ET | [10-Q](/filings/0001057352-26-000066.md) | Quarterly report, period 2026-06-30 | 0001057352-26-000066 |
| 2026-07-28 | 16:05 ET | [8-K](/filings/0001057352-26-000061.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001057352-26-000061 |
| 2026-07-13 | 17:06 ET | [8-K](/filings/0001057352-26-000054.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000054 |
| 2026-06-25 | 09:00 ET | [8-K](/filings/0001057352-26-000048.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000048 |
| 2026-05-29 | 08:05 ET | [8-K](/filings/0001193125-26-246361.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-246361 |
| 2026-04-30 | 16:07 ET | [DEF 14A](/filings/0001193125-26-197205.md) | Proxy statement, period 2026-06-23 | 0001193125-26-197205 |
| 2026-04-29 | 16:09 ET | [10-Q](/filings/0001057352-26-000035.md) | Quarterly report, period 2026-03-31 | 0001057352-26-000035 |
| 2026-04-28 | 16:05 ET | [8-K](/filings/0001057352-26-000030.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000030 |
| 2026-03-16 | 06:05 ET | [8-K](/filings/0001057352-26-000024.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure | 0001057352-26-000024 |
| 2026-02-26 | 18:14 ET | [10-K](/filings/0001057352-26-000020.md) | Annual report, period 2025-12-31 | 0001057352-26-000020 |
| 2026-02-24 | 16:04 ET | [8-K](/filings/0001057352-26-000012.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000012 |
| 2026-02-13 | 16:01 ET | [8-K](/filings/0001057352-26-000008.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001057352-26-000008 |
| 2026-01-07 | 07:31 ET | [8-K](/filings/0001057352-26-000004.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-26-000004 |
| 2025-10-29 | 16:51 ET | [10-Q](/filings/0001057352-25-000120.md) | Quarterly report, period 2025-09-30 | 0001057352-25-000120 |
| 2025-10-28 | 16:03 ET | [8-K](/filings/0001057352-25-000116.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure | 0001057352-25-000116 |
| 2025-08-27 | 09:01 ET | [8-K](/filings/0001057352-25-000102.md) | 7.01 Regulation FD disclosure | 0001057352-25-000102 |
| 2025-07-23 | 16:00 ET | [10-Q](/filings/0001057352-25-000097.md) | Quarterly report, period 2025-06-30 | 0001057352-25-000097 |
| 2025-07-22 | 16:12 ET | [8-K](/filings/0001057352-25-000095.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-25-000095 |
| 2025-06-27 | 16:24 ET | [8-K](/filings/0001057352-25-000083.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001057352-25-000083 |
| 2025-05-09 | 08:54 ET | [8-K](/filings/0001057352-25-000069.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-25-000069 |
| 2025-05-01 | 18:06 ET | [10-Q](/filings/0001057352-25-000067.md) | Quarterly report, period 2025-03-31 | 0001057352-25-000067 |
| 2025-04-30 | 16:38 ET | [DEF 14A](/filings/0001193125-25-107493.md) | Proxy statement, period 2025-06-26 | 0001193125-25-107493 |
| 2025-04-29 | 16:34 ET | [8-K](/filings/0001057352-25-000063.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001057352-25-000063 |
| 2025-04-07 | 08:59 ET | [8-K](/filings/0001193125-25-074119.md) | 1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-074119 |
| 2025-02-28 | 16:04 ET | [8-K](/filings/0001193125-25-042465.md) | 2.01 Completion of an acquisition or disposition; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-042465 |
| 2025-02-20 | 17:48 ET | [10-K](/filings/0001057352-25-000016.md) | Annual report, period 2024-12-31 | 0001057352-25-000016 |
| 2025-02-18 | 16:08 ET | [8-K](/filings/0001057352-25-000004.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-25-000004 |
| 2024-10-23 | 16:52 ET | [10-Q](/filings/0001057352-24-000125.md) | Quarterly report, period 2024-09-30 | 0001057352-24-000125 |
| 2024-10-22 | 16:12 ET | [8-K](/filings/0001057352-24-000122.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-24-000122 |
| 2024-07-25 | 17:31 ET | [10-Q](/filings/0001057352-24-000091.md) | Quarterly report, period 2024-06-30 | 0001057352-24-000091 |
| 2024-07-23 | 16:29 ET | [8-K](/filings/0001193125-24-182891.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-182891 |
| 2024-07-11 | 16:09 ET | [8-K](/filings/0001057352-24-000084.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure | 0001057352-24-000084 |
| 2024-06-18 | 16:20 ET | [8-K](/filings/0001057352-24-000077.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-24-000077 |
| 2024-06-07 | 16:39 ET | [8-K](/filings/0001057352-24-000074.md) | 5.07 Shareholder vote results | 0001057352-24-000074 |
| 2024-05-31 | 16:01 ET | [8-K](/filings/0001193125-24-151700.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-24-151700 |
| 2024-04-26 | 15:29 ET | [DEF 14A](/filings/0001193125-24-117787.md) | Proxy statement, period 2024-06-06 | 0001193125-24-117787 |
| 2024-04-24 | 17:30 ET | [10-Q](/filings/0001057352-24-000059.md) | Quarterly report, period 2024-03-31 | 0001057352-24-000059 |
| 2024-04-23 | 17:00 ET | [8-K](/filings/0001193125-24-107185.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-107185 |
| 2024-04-22 | 09:11 ET | [8-K](/filings/0001193125-24-103937.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-103937 |
| 2024-02-22 | 18:04 ET | [10-K](/filings/0001057352-24-000013.md) | Annual report, period 2023-12-31 | 0001057352-24-000013 |
| 2024-02-21 | 08:12 ET | [8-K](/filings/0001193125-24-040767.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-24-040767 |
| 2024-02-20 | 16:32 ET | [8-K](/filings/0001193125-24-040030.md) | 2.02 Results of operations; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-24-040030 |
| 2023-10-25 | 15:35 ET | [10-Q](/filings/0001057352-23-000127.md) | Quarterly report, period 2023-09-30 | 0001057352-23-000127 |
| 2023-10-24 | 16:15 ET | [8-K](/filings/0001193125-23-261675.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-23-261675 |
| 2023-08-01 | 09:20 ET | [8-K](/filings/0001057352-23-000118.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001057352-23-000118 |
| 2023-07-26 | 15:50 ET | [10-Q](/filings/0001057352-23-000111.md) | Quarterly report, period 2023-06-30 | 0001057352-23-000111 |
| 2023-07-25 | 16:10 ET | [8-K](/filings/0001057352-23-000108.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001057352-23-000108 |

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Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 29, 2026, 05:28 ET. No prices; not investment advice.