# EDGAR Filing Document

**Accession Number:** 0001057352
**File Stem:** 0001193125-26-197274
**Filing Date:** 2026-4
**Character Count:** 1222
**Document Hash:** 5e06eb99849d4a40e65c13120647e357
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-197274.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001193125-26-197274

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COSTAR GROUP, INC.
- **CENTRAL INDEX KEY:** 0001057352
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-BUSINESS SERVICES, NEC [7389]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 522091509
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-24531
- **FILM NUMBER:** 26925338

**BUSINESS ADDRESS:**
- **STREET 1:** 1201 WILSON BLVD.
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22209
- **BUSINESS PHONE:** 2023466500

**MAIL ADDRESS:**
- **STREET 1:** 1201 WILSON BLVD.
- **CITY:** ARLINGTON
- **STATE:** VA
- **ZIP:** 22209

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COSTAR GROUP INC
- **DATE OF NAME CHANGE:** 19990805

### Attached PDF Documents

**Attachment 1:** `d903162dars.pdf`

_No text found in this document._