Welcome to our dedicated page for Costar Group SEC filings (Ticker: CSGP), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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- 10-K – CoStar Group annual report 10-K simplified: AI extracts segment revenue, data-collection expenses, and risk factors tied to commercial real-estate cycles.
- 10-Q: Quickly compare quarter-over-quarter marketplace margins in our CoStar Group earnings report filing analysis.
- 8-K: Material event summaries—product launches, acquisitions—CoStar Group 8-K material events explained in plain English.
- DEF 14A: Dive into CoStar Group proxy statement executive compensation without parsing legal jargon.
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CoStar Group (CSGP) reported Q3 results. Revenue rose to $833.6 million from $692.6 million, reflecting continued subscription strength. Higher operating costs and amortization drove an operating loss of $51.1 million and a net loss of $30.9 million, or $0.07 per share, compared with a $53.0 million profit a year ago.
For the first nine months, revenue reached $2,347.1 million versus $2,026.8 million, with a year‑to‑date net loss of $39.5 million. Cash and cash equivalents were $1,935.3 million at September 30, 2025, down from $4,681.0 million at year‑end, as the company completed acquisitions including Matterport in February and Domain in August. Goodwill increased to $4,915.4 million and intangible assets to $1,844.4 million. The quarter included a $98.8 million litigation accrual and $99.5 million of restricted cash for a litigation bond. Stock‑based compensation expense was $70.8 million in the quarter. Shares outstanding were 423,822,791 as of October 27, 2025.
CoStar Group (CSGP) announced its financial and operating results for the quarter ended September 30, 2025, and furnished the related press release as Exhibit 99.1. The company stated this information is furnished, not filed, under the securities laws.
CoStar also noted it plans to use its investor website (investors.costargroup.com) as a channel for material company information, including investor presentations.
Christine M. McCarthy, a director of CoStar Group, Inc. (CSGP), reported a purchase of 2,973 shares of the company's common stock on 09/09/2025 at a reported price of $0, resulting in direct beneficial ownership of 2,973 shares following the transaction. The Form 4 was signed by an attorney-in-fact on 09/11/2025. The filing documents an insider acquisition by a board member but does not disclose reason or additional holdings.
Insider purchase disclosed: Director Louise S. Sams acquired 3,291 shares of CoStar Group, Inc. (CSGP) on 09/09/2025 at no reported cash price and now beneficially owns 19,409 shares. The Form 4 was signed by an attorney-in-fact on 09/11/2025. The filing indicates the transaction was by the reporting person as a director and was filed individually.
CoStar Group, Inc. (CSGP) director John L. Berisford reported acquiring 2,973 shares of CoStar common stock on 09/09/2025. The transaction is coded "A" and shows a price of $0 per share, with 2,973 shares reported as beneficially owned following the transaction. The Form 4 was filed as a single reporting person filing and includes an electronic signature executed by Gene Boxer, Attorney-in-Fact, dated 09/11/2025. The reporting address is listed as C/O CoStar Group, Inc., 1201 Wilson Blvd., Arlington, VA 22209. No derivative securities or additional transactions are reported on this Form 4.
John W. Hill, a director of CoStar Group, Inc. (CSGP), reported acquiring 3,177 shares of the company's common stock on 09/09/2025. The reported transaction shows a price of $0 and brings his beneficial ownership to 20,481 shares following the transaction. The Form 4 was signed by Gene Boxer, Attorney-in-Fact, on 09/11/2025. The filing identifies Hill as a director and is a single-reporting-person Form 4. No derivative securities or other transactions are disclosed in this filing.
Robert W. Musslewhite, a director of CoStar Group, Inc. (CSGP), acquired 3,121 shares of CoStar common stock on 09/09/2025. The Form 4 reports the transaction as an acquisition (transaction code A) at a reported price of $0, and shows total beneficial ownership following the transaction of 18,277 shares. The filing indicates the report was submitted by one reporting person and is signed by an attorney-in-fact on 09/11/2025.
The filing shows that Rachel C. Glaser, a director of CoStar Group, Inc. (CSGP), acquired 3,143 shares of CoStar common stock on 09/09/2025 at a reported price of $0 (indicating a non‑cash award or gift reporting convention). After the transaction she beneficially owned 3,143 shares directly. The Form 4 was signed by an attorney‑in‑fact on 09/11/2025.
Angelique G. Brunner, a director of CoStar Group, Inc. (CSGP), acquired 3,143 shares of the company’s common stock on 09/09/2025 at no reported cash price, bringing her total beneficial ownership to 10,166 shares held directly. The Form 4 discloses this non-derivative purchase and indicates the filing was executed by an attorney-in-fact on behalf of the reporting person.
The filing shows a single, straightforward purchase of common stock by an insider rather than a sale or derivative transaction; no option grants, conversions, or other derivative activity are reported.
Saint Frederick G., identified as President, Marketplaces of CoStar Group, Inc. (CSGP), reported a sale of 25,000 shares of CoStar common stock on 08/28/2025 at an average price of $90.33 per share (sale prices ranged $90.30–$90.38). Following the transaction the reporting person beneficially owned 293,103 shares, held directly. The Form 4 was signed by attorney-in-fact Gene Boxer on 09/02/2025. The filing shows routine insider disposition with the required Section 16 disclosure and includes an explanatory remark on the average sale price.
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