InsidersTradesSigma
Costar Group, INC. Stock: price and insider trades · United States · SEC (Form 4)
Track the Costar Group, INC. stock price and the full management transaction log of the company, a listed equity based in United States. Shares trade on US US, under the oversight of SEC (Form 4). Operating in the Real Estate sector, Costar Group, INC. has published 193 insider filings. Market capitalisation: €11.9bn. The latest transaction was reported on 6 July 2026 (Retenue fiscale). Among the most active insiders: Ruggles Lisa. All data is free.
193
Insider Decl.
0
Thresholds
€1m
1 ops.
Buy Volume
€40m
49 ops.
Sell Volume
Analyst consensus: bullish or bearish?
Analysts rate Costar Group, INC. Buy (bullish), based on 20 analysts. Average price target: US$47.50.
42Σ signal
Informational score on this market. Our backtest validates the signal only on 8 EU venues; elsewhere (notably US markets) insider buys historically invert or do not hold. Not a recommendation.
Fundamental score
Ranked 18,392 of 26,120 companies
38.0
score / 100
Value36
Quality40
FCF yld0.3%
Earn yld0.1%
EV/EBITDA·
ROE0.3%
Gross mgn79%
Net mgn0.2%
Debt/EBITDA6.2x
Pillars2/3
Transparent value + quality ranking, distinct from the insider signal.
Sigma AI Analysis
Fundamental view, insider signal, bull and bear case, synthesis.
AI-generated analysis. Opinion, not investment advice. Not backtested. Built from public filings and financials. No price target, no buy or sell recommendation.
Last declaration on 6 July 2026
Declarations193 total
5,597 shares@ US$29.360.0013% mcap100.0% of flowCommon Stock, par value $0.01 per shareSEC:0001701994-26-000006:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001449719-26-000002:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001742356-26-000002:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001351689-26-000002:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001390194-26-000002:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001497570-26-000011:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001628280-26-045326:0
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001796961-26-000004:0
461 sharesCommon Stock, par value $0.01 per shareSEC:0001472762-26-000008:0
11,107 shares@ US$43.633.7% of flowCommon Stock, par value $0.01 per shareSEC:0001925960-26-000008:0
2,873 shares@ US$43.633.4% of flowCommon Stock, par value $0.01 per shareSEC:0001925959-26-000006:0
482 shares@ US$43.631.7% of flowCommon Stock, par value $0.01 per shareSEC:0001758152-26-000008:0
428 shares@ US$43.631.5% of flowCommon Stock, par value $0.01 per shareSEC:0001758152-26-000006:0
2,977 shares@ US$43.631.6% of flowCommon Stock, par value $0.01 per shareSEC:0001717178-26-000008:0
1,194 shares@ US$43.639.6% of flowCommon Stock, par value $0.01 per shareSEC:0001472762-26-000006:0
3,291 shares0Common Stock, par value $0.01 per shareSEC:0001796961-25-000004:0
3,143 shares0Common Stock, par value $0.01 per shareSEC:0001742356-25-000005:0
3,143 shares0Common Stock, par value $0.01 per shareSEC:0001497570-25-000007:0
2,973 shares0Common Stock, par value $0.01 per shareSEC:0001449719-25-000005:0
3,121 shares0Common Stock, par value $0.01 per shareSEC:0001390194-25-000005:0
3,177 shares0Common Stock, par value $0.01 per shareSEC:0001351689-25-000005:0
2,973 shares0Common Stock, par value $0.01 per shareSEC:0001057352-25-000107:0
25,000 shares@ US$90.3317.0% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-25-000104:0
1,436 shares@ US$95.191.3% of flowCommon Stock, par value $0.01 per shareSEC:0001500076-25-000006:0
719 shares@ US$95.1914.0% of flowCommon Stock, par value $0.01 per shareSEC:0001472762-25-000006:0
25 of 193 declarations
About Costar Group, INC.
CoStar Group, Inc. (NASDAQ: CSGP) is a leading provider of real estate information, analytics, online marketplaces, and 3D digital twin technology. Headquartered in Arlington, Virginia, United States, the company was founded in 1986 and built its franchise around one core proposition: helping commercial and residential real estate participants make better decisions with proprietary, high-quality, decision-ready data. For investors, CoStar is best understood as a digital infrastructure company embedded in the property ecosystem rather than as a traditional listings portal. The group’s operating model is built on a portfolio of well-known brands. CoStar remains the historical core of the business, delivering commercial real estate data, analytics, and news. LoopNet is positioned as a leading commercial real estate marketplace. Apartments.com serves multifamily rental demand in the U.S. residential segment, while Homes.com has become a major strategic growth initiative in the residential marketplace. Domain provides exposure to the Australian property market, giving CoStar a meaningful international footprint. The acquisition of Matterport further expanded the platform into 3D digital twins and AI-enabled property visualization and analytics. From a competitive standpoint, CoStar has a strong moat built on data depth, brand strength, and long-standing relationships with brokers, owners, developers, and property managers. Its scale in commercial real estate information is a key differentiator, and the company increasingly combines data, marketplaces, and immersive technology into a broader real estate software and media ecosystem. That said, the business still faces real-estate cyclicality, competitive pressure from other property portals, and the need to continuously defend traffic, product relevance, and monetization. Geographically, CoStar is primarily a U.S. business, but it has international operations and ambitions, including presence in London and Australia. Management has recently emphasized profitable growth, broader product development for commercial real estate, international expansion, and the use of AI across the organization to improve efficiency and accelerate revenue growth. Recent milestones underscore that strategy. In Q1 2026, revenue increased 23% year over year to $897 million, while net new bookings improved, and management raised full-year 2026 guidance. The company also completed the Matterport acquisition and highlighted initiatives aimed at scaling Homes.com, enhancing commercial product offerings, and improving long-term shareholder value. Listed on the NASDAQ in the United States, CoStar remains one of the most important public-market plays on the digitization of real estate.
