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CoStar Group Inc
NASDAQ:CSGP

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CoStar Group Inc
NASDAQ:CSGP
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Price: 43.63 USD 0.62% Market Closed
Market Cap: $18.5B

During the last 3 months CoStar Group Inc insiders bought 3.5m USD , and have not sold any shares. The stock price has dropped by 32% over this period (open performance analysis).

The last transaction was made on Mar 6, 2026 by Sams Louise S , who bought 48.4k USD worth of CSGP shares.

Last Transactions:
Sams Louise S
$+48.4k
Saint Frederick G.
$+906.6k
Glaser Rachel C
$+44.9k
Florance Andrew C
$+2.5m
Hill John W
$-154.5k
Cann Cynthia Cammett
$-126.6k
Saint Frederick G.
$-2.3m
Saint Frederick G.
$-2.3m
Cann Cynthia Cammett
$-188.8k
Saint Frederick G.
$-2m
Cann Cynthia Cammett
$-139.7k
Hill John W
$-209.9k
Nassetta Christopher J
$-135.1k
Desmarais Michael J
$-439.3k
Cann Cynthia Cammett
$-100.7k
Klein Michael R
$-5.4m
Florance Andrew C
$+1.1m
Cann Cynthia Cammett
$-93.8k
Hill John W
$-103.6k
Saint Frederick G.
$-221.1k
Ruggles Lisa
$-1.8m
Desmarais Michael J
$-352.1k
Wheeler Scott T
$-11.4m
Hill John W
$-253.9k
Nassetta Christopher J
$-116.8k
Ruggles Lisa
$-2.8m
Wheeler Scott T
$-1.9m
Simuro Frank
$-8.3m
Hill John W
$-129.9k
Wheeler Scott T
$-2m
Saint Frederick G.
$-2.4m
Florance Andrew C
$-27.7m
View All Transactions

During the last 3 months CoStar Group Inc insiders bought 3.5m USD , and have not sold any shares. The stock price has dropped by 32% over this period (open performance analysis).

The last transaction was made on Mar 6, 2026 by Sams Louise S , who bought 48.4k USD worth of CSGP shares.

Sold
0-3
months
0 USD
0
3-6
months
281.2k USD
2
6-9
months
4.8m USD
2
9-12
months
2m USD
1
Bought
0-3
months
4
3.5m USD
3-6
months
0
0 USD
6-9
months
0
0 USD
9-12
months
0
0 USD

CoStar Group Inc
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CoStar Group Inc
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CoStar Group Inc
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CoStar Group Inc
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CoStar Group Inc. has cemented itself as a pivotal force within the commercial real estate landscape, leveraging technology to revolutionize the way real estate professionals access and utilize property information. Founded in 1987 by Andrew Florance, the company has meticulously built a comprehensive database and software suite that serves as an indispensable tool for brokers, investors, and property managers. At its core, CoStar operates as a data powerhouse, amassing vast amounts of information on commercial properties across the globe. This data spans building specifications, tenancy details, ownership information, and historical sales and lease data, among other metrics. By offering a platform that aggregates such detailed insights, CoStar empowers its clientele to make informed decisions, from property valuation and acquisition to market analysis and asset management. The company primarily generates its revenue through subscription services, providing access to its extensive database and analytics tools. Users, including real estate firms, institutions, and small businesses, pay premium fees for real-time access to CoStar's vast repository of continuously updated information. Additionally, CoStar Group extends its reach beyond mere data provision by supplying advertising solutions through platforms like Apartments.com. Here, landlords and property managers pay to list rental properties, seeking visibility among potential tenants. This additional revenue stream underscores CoStar’s dual role as both a data provider and a marketing channel within the real estate ecosystem. As a result, CoStar Group Inc. has not only carved out a niche for itself but has also become an integral part of the real estate industry's fabric, guiding critical business decisions through precision and innovation.

CSGP Intrinsic Value
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What is Insider Trading?

Insider trading refers to the buying or selling of a company’s stock by individuals with access to non-public, material information about the company.

While legal insider trading occurs when insiders follow disclosure rules, illegal insider trading involves trading based on confidential information and is prohibited by law.

Why is Insider Trading Important?

It isn't a coincidence that corporate executives seem to always buy at the right times. After all, they have access to every bit of company information you could ever want.

However, the fact that company executives have unique insights doesn't mean that individual investors are always left in the dark. Insider trading data is out there for all who want to use it.

Peter Lynch

Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.

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