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CoStar Group (CSGP) Insider Trading & Ownership

CoStar Group logo
$34.90 -0.48 (-1.36%)
Closing price 05/5/2026 04:00 PM Eastern
Extended Trading
$35.25 +0.35 (+1.01%)
As of 08:48 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.

CoStar Group (NASDAQ:CSGP) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
1.09%
Number Of
Insiders Buying
(Last 12 Months)
2
Amount Of
Insider Buying
(Last 12 Months)
$2.56M
Number Of
Insiders Selling
(Last 12 Months)
2
Amount Of
Insider Selling
(Last 12 Months)
$4.78M
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CSGP Insider Buying and Selling by Quarter

CoStar Group Insider and Congressional Trades History

Transaction DateInsiderBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails
5/1/2026Buy71,430$35.20$2,514,336.00  
3/30/2026
Ro Khanna
Ro Khanna
House (D-CA)
Sell$40.88$1,001 - $15,000
3/23/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$42.91$1,001 - $15,000
3/13/2026Buy$43.63$1,001 - $15,000
3/10/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$46.33$1,001 - $15,000
3/6/2026Buy1,000$48.36$48,360.00  
2/24/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$49.15$1,001 - $15,000
2/17/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$45.74$1,001 - $15,000
2/5/2026
Ro Khanna
Ro Khanna
House (D-CA)
Sell$50.99$1,001 - $15,000
1/29/2026
Ro Khanna
Ro Khanna
House (D-CA)
Buy$61.93$1,001 - $15,000
1/28/2026Buy$65.20$1,001 - $15,000
1/13/2026
Ro Khanna
Ro Khanna
House (D-CA)
Sell$61.82$1,001 - $15,000
1/6/2026
Ro Khanna
Ro Khanna
House (D-CA)
Sell$67.20$1,001 - $15,000
12/10/2025Buy$67.87$1,001 - $15,000
11/10/2025
Ro Khanna
Ro Khanna
House (D-CA)
Sell$67.23$1,001 - $15,000
11/3/2025
Ro Khanna
Ro Khanna
House (D-CA)
Sell$69.38$1,001 - $15,000
10/15/2025Buy$75.19$1,001 - $15,000
9/30/2025Buy$84.37$1,001 - $15,000
9/25/2025
Lisa C. McClain
Lisa C. McClain
House (R-MI)
Sell$83.09$1,001 - $15,000
9/22/2025Buy$86.31$1,001 - $15,000
8/28/2025Sell25,000$90.33$2,258,250.00  
8/13/2025
Lisa C. McClain
Lisa C. McClain
House (R-MI)
Buy$87.56$1,001 - $15,000
7/31/2025Buy$95.19$1,001 - $15,000
7/28/2025
Cynthia Cammett Cann
CAO
Sell2,033$92.85$188,764.05  
7/28/2025Sell25,000$93.23$2,330,750.00  
(Data available from 1/1/2013 forward)

CSGP Insider Trading Activity - Frequently Asked Questions

The list of insiders at CoStar Group includes Andrew C Florance, Cynthia Cammett Cann, Frank Simuro, Frederick G Saint, John W Hill, Lisa Ruggles, Louise S Sams, Michael J Desmarais, Michael R Klein, and Scott T Wheeler. Learn more on insiders at CSGP.

1.09% of CoStar Group stock is owned by insiders. Learn more on CSGP's insider holdings.

The following insiders have purchased CSGP shares in the last 24 months: Andrew C Florance ($3,614,299.77), and Louise S Sams ($48,360.00).

Insiders have purchased a total of 87,161 CSGP shares in the last 24 months for a total of $3,662,659.77 bought.

The following insiders have sold CSGP shares in the last 24 months: Cynthia Cammett Cann ($523,022.65), Frederick G Saint ($4,589,000.00), Michael J Desmarais ($439,340.00), and Michael R Klein ($5,350,268.77).

Insiders have sold a total of 133,425 CoStar Group shares in the last 24 months for a total of $10,901,631.42 sold.

Ro Khanna (D-CA), Gilbert Ray Cisneros, Jr. (D-CA), and Lisa C. McClain (R-MI) have bought shares of CoStar Group in the last year totaling $160,500. Ro Khanna (D-CA), Lisa C. McClain (R-MI), Robert Bresnahan, Jr. (R-PA), and Jefferson Shreve (R-IN) have sold shares totaling $96,500.



This page (NASDAQ:CSGP) was last updated on 5/6/2026 by MarketBeat.com Staff.
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