COSTAR GROUP, INC.
For the period ended Sep 30, 2026. Filed Oct 28, 2026.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2026 · Filed Oct 28, 2026
CSGP$30.55-4.7%Stored close · as of Nov 6, 2026
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Glossary of Terms
The following abbreviations or acronyms used in this Quarterly Report on Form 10-Q (this“Report”) are defined below:
| Abbreviation or Acronym | Definition |
|---|---|
| 2024 Credit Agreement | The credit agreement the Company entered into on May 24, 2024 |
| 2025 Form 10-K | CoStar Group's Annual Report on Form 10-K for the year ended December 31, 2025 filed with the SEC on February 26, 2026 |
| 2025 Plan | The CoStar Group, Inc. 2025 Stock Incentive Plan, adopted by the Board of Directors on April 28, 2025 and approved by stockholders on June 26, 2025 |
| 2026 ASR Agreement | Accelerated Share Repurchase Program established in 2026 |
| A$ | Australian dollars |
| AI | Artificial intelligence |
| AI Technologies | AI and machine learning technologies |
| AOMs | Structured equity vehicles operating under Domain's agent ownership model, which function as strategic partnership tools providing residential and commercial real estate agenciesan economic stake in Domain-affiliated entities and creating a mechanism to reward long-termengagement and performance through profit-sharing rather than traditional commissions orrebates |
| ASC | Accounting Standards Codification |
| ASU | Accounting Standards Update |
| BEAT | Base erosion and anti-abuse minimum tax |
| Board of Directors | The CoStar Group Board of Directors |
| Brown Defendants | Matterport, Gores Holdings VI, Inc. (now known as Matterport, LLC), Maker Merger Sub Inc., Maker Merger Sub II, LLC, and then-Matterport directors R.J. Pittman, David Gausebeck, Matt Bell, Peter Hebert, Jason Krikorian, Carlos Kokron, and Michael Gustafson |
| Brown Judgment | The Chancery Court awarded plaintiff William J. Brown, a former employee and a stockholder of Matterport, $79 million plus pre- and post-judgment interest as damages for losses caused by Matterport’s initial refusal to issue freely transferable shares |
| Chancery Court | Court of Chancery of the State of Delaware |
| CODM | Chief Operating Decision Maker |
| CoStar Group (also the “Company,” “we,” “us,” or “our”) | The legal entity, CoStar Group, Inc., a Delaware corporation, one or more of its consolidated subsidiaries or operating segments, or the entirety of CoStar Group, Inc. and its consolidated subsidiaries |
| CoStar Group Share | A share of the common stock of the Company, par value $0.01 per share |
| CRI | The legal entity CoStar Realty Information, Inc., a Delaware corporation, a wholly-owned subsidiary of CoStar Group, and the Company's primary operating entity in the United States |
| Domain | Domain Holdings Australia Pty Limited (formerly Domain Holdings Australia Limited) and the products it sells |
| Domain Acquisition | CoStar Group's acquisition of Domain completed on August 27, 2025, pursuant to the Scheme Implementation Deed |
| Domain Proposal | The Company’s non-binding indicative proposal to acquire 100% of the issued capital of Domain by way of scheme of arrangement for a cash consideration of A$4.43 per ordinary share of Domain |
| DSUs | Deferred Stock Units |
| EBITDA | Net income (loss) before interest income or expense, net; other income or expense, net; income taxes; depreciation; and amortization |
| EPS | Earnings per share |
| ESPP | Employee Stock Purchase Plan |
| EURIBOR | Euro Interbank Offered Rate |
| Exchange Act | The Securities Exchange Act of 1934, as amended |
| Abbreviation or Acronym | Definition |
|---|---|
| FASB | Financial Accounting Standards Board |
| FDII | Foreign Derived Intangible Income |
| GAAP | Generally accepted accounting principles in the U.S. |
| GILTI | Global intangible low-taxed income inclusion |
| Gores Transaction | The Gores merger transaction and the Agreement and Plan of Merger thereunder |
| Homes.com | One of the flagship brands of our residential products and a homes for-sale listings site, which provides marketing for residential real estate agents and brokers and allows homebuyers to view residential property listings, research communities, and connect with real estate agents and brokers |
| H.R.1 | A bill to provide for reconciliation pursuant to Title II of H. Con. Res. 14, commonly referred to as the One Big Beautiful Bill Act, and signed into law on July 4, 2025 |
| Matching RSUs | Awards of matching restricted stock units awarded under the Company's Management Stock Purchase Plan |
| Matterport | The legal entity Matterport, LLC, formerly known as Matterport Inc., a Delaware corporation and provider of a technology platform that uses spatial data to transform physical buildings and spaces into dimensionally accurate, digital images |
| Matterport Acquisition | CoStar Group's acquisition of Matterport completed on February 28, 2025, pursuant to the Matterport Merger Agreement |
| Matterport Common Stock | Matterport Class A common stock, par value $0.0001 per share |
| Matterport Merger Agreement | The Agreement and Plan of Merger and Reorganization between CoStar Group and Matterport, Matrix Merger Sub I LLC, and Matrix Merger Sub II LLC entered into on April 21, 2024 |
| Matterport Merger Exchange Ratio | A ratio of 0.03552 which was determined by the Matterport Merger Agreement and was set on the collar floor as the volume-weighted average price at which the CoStar Group Shares traded on the Nasdaq Global Select Market for the 20 consecutive Trading Days was below the Floor Price of a symmetrical collar of $77.42 |
| MLSs | Multiple listing services |
| MSPP | Management Stock Purchase Plan |
| NCI | Noncontrolling interest |
| OnTheMarket | The legal entity OnTheMarket Limited, the operator of onthemarket.com, a U.K. residential property portal |
| Prior Stock Repurchase Program | The stock repurchase program the Board of Directors approved in February 2025 that authorizes the repurchase of up to $500 million of CoStar Group Shares |
| PRSAs | Performance-based Restricted Stock Awards with market conditions |
| PRSUs | Performance-based Restricted Stock Units with market conditions |
| ROU | Right-of-use |
| RSAs | Restricted Stock Awards |
| RSUs | Restricted Stock Units |
| SaaS | Software as a Service |
| SEC | The U.S. Securities and Exchange Commission |
| Securities Act | The Securities Act of 1933, as amended |
| Senior Notes | 2.800% notes issued by CoStar Group due July 15, 2030 |
| SOFR | Secured Overnight Financing Rate |
| SONIA | Sterling Overnight Index Average |
| Stock Repurchase Program | The stock repurchase program the Board of Directors approved in December 2025 that authorizes the repurchase of up to $1.5 billion CoStar Group Shares |
| STR | The Company's brand for benchmarking hotel performance and providing market insights to the hospitality industry |
| Abbreviation or Acronym | Definition |
|---|---|
| Term SOFR | The forward-looking SOFR term rates administered by CME Group Benchmark Administration Limited |
| Transfer Restrictions | Certain transfer restrictions in connection with the Gores Transaction |
| TSR | Total shareholder return |
| U.K. | The United Kingdom of Great Britain and Northern Ireland |
| U.S. | The United States of America |
| Vexcel | Vexcel Group, Inc. and its subsidiaries, a leading provider of aerial imagery, geospatial data, and AI-powered digital property intelligence |
| Vexcel Acquisition | CoStar Group's proposed acquisition of Vexcel, pursuant to the Vexcel Merger Agreement |
| Vexcel Merger Agreement | The Agreement and Plan of Merger, dated as of October 26, 2026, among CRI, Velocity Merger Sub, Inc., and Vexcel Group, Inc., and Fortis Advisors LLC, a Delaware limited liability company, solely in its capacity as the Stockholder Representative |
| VIE | Variable Interest Entity |
| Visual Lease | The legal entity Visual Lease, LLC, a Delaware limited liability company and operator of Visual Lease, a SaaS platform for integrated lease management and lease accounting |
| Visual Lease Acquisition | CoStar Group's acquisition of all of the outstanding equity interest in Visual Lease completed on November 1, 2024, pursuant to the Visual Lease Merger Agreement |
| Visual Lease Merger Agreement | The Agreement and Plan of Merger dated as of October 18, 2024, between CRI; Neptune Merger Sub; Visual Lease, LLC; and Shareholder Representative Services LLC as the Holder Representative, pursuant to which, among other things, and subject to its terms, Neptune Merger Sub merged with and into Visual Lease with Visual Lease surviving the merger as a wholly owned subsidiary of CRI |
| Zonda | Bora Inc. and its subsidiaries, a leading provider of data, analytics, software, and marketplace solutions for the residential construction industry |
| Zonda Acquisition | CoStar Group's acquisition of Zonda completed on August 21, 2026, pursuant to the Zonda Agreement in which CRI acquired all of the outstanding equity in Zonda |
| Zonda Agreement | The Stock Purchase Agreement entered into on May 28, 2026, between CRI and Bora, Inc. and Bora Holdings Group, L.P. |
PART I — FINANCIAL INFORMATION
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.