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CSGP Insider Trading

Insider Ownership Percentage: 1.18%
Insider Buying (Last 12 Months): $5,052,533.00
Insider Selling (Last 12 Months): $147,374.64

CoStar Group Insider Trading History Chart

This chart shows the insider buying and selling history at CoStar Group by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

CoStar Group Share Price & Price History

Current Price: $30.10
Price Change: ▼ Price Decrease of -0.16 (-0.53%)
As of 11/12/2026 04:00 PM ET

This chart shows the closing price history over time for CSGP up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

CoStar Group Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/7/2026Cynthia Cammett CannCAOSell4,788$30.78$147,374.6418,822View SEC Filing Icon  
8/4/2026Andrew C. FloranceCEOBuy83,300$29.89$2,489,837.001,806,165View SEC Filing Icon  
5/1/2026Andrew C. FloranceCEOBuy71,430$35.20$2,514,336.001,722,865View SEC Filing Icon  
3/6/2026Louise S SamsDirectorBuy1,000$48.36$48,360.0020,409View SEC Filing Icon  
8/28/2025Frederick G SaintInsiderSell25,000$90.33$2,258,250.00293,103View SEC Filing Icon  
7/28/2025Cynthia Cammett CannCAOSell2,033$92.85$188,764.0525,771View SEC Filing Icon  
7/28/2025Frederick G SaintInsiderSell25,000$93.23$2,330,750.00319,539View SEC Filing Icon  
3/10/2025Cynthia Cammett CannCAOSell1,749$79.90$139,745.1029,456View SEC Filing Icon  
11/26/2024Michael J. DesmaraisInsiderSell5,500$79.88$439,340.0058,798View SEC Filing Icon  
11/11/2024Cynthia Cammett CannCAOSell1,310$76.85$100,673.5026,485View SEC Filing Icon  
10/25/2024Andrew C. FloranceCEOBuy14,731$74.67$1,099,963.771,263,098View SEC Filing Icon  
10/25/2024Michael R. KleinDirectorSell71,633$74.69$5,350,268.771,913,501View SEC Filing Icon  
7/31/2024Cynthia Cammett CannCAOSell1,200$78.20$93,840.0027,795View SEC Filing Icon  
4/26/2024Michael J. DesmaraisInsiderSell3,800$92.67$352,146.0064,087View SEC Filing Icon  
4/26/2024Scott T WheelerCFOSell122,736$92.61$11,366,580.96303,417View SEC Filing Icon  
11/28/2023John W. HillDirectorSell3,020$84.07$253,891.4017,870View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for CoStar Group (NASDAQ:CSGP)

96.60% of CoStar Group stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at CSGP by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

CoStar Group Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/12/2026AlphaGrep UK Ltd17,421$0.48M0.1%+16.2%0.004%Search for SEC Filing on Google Icon
11/12/2026Benjamin Edwards Inc.9,682$0.27M0.0%-25.9%0.002%Search for SEC Filing on Google Icon
11/12/2026First Trust Advisors LP99,439$2.73M0.0%+278.7%0.025%Search for SEC Filing on Google Icon
11/12/2026BNP Paribas10,863$0.29M0.0%N/A0.003%Search for SEC Filing on Google Icon
11/12/2026Barrow Hanley Mewhinney & Strauss LLC622,544$17.06M0.1%N/A0.155%Search for SEC Filing on Google Icon
11/12/2026State Street Corp22,944,091$628.67M0.0%-37.7%5.703%Search for SEC Filing on Google Icon
11/12/2026Resona Asset Management Co. Ltd.5,978$0.16M0.0%-94.9%0.001%Search for SEC Filing on Google Icon
11/11/2026GW&K Investment Management LLC1,167$32K0.0%-28.1%0.000%Search for SEC Filing on Google Icon
11/11/2026Private Advisor Group LLC18,301$0.50M0.0%N/A0.005%Search for SEC Filing on Google Icon
11/11/2026Ieq Capital LLC163,165$4.47M0.0%-53.6%0.041%Search for SEC Filing on Google Icon
11/10/2026Landscape Capital Management L.L.C.22,211$0.61M0.0%N/A0.006%Search for SEC Filing on Google Icon
11/10/2026Voya Investment Management LLC80,461$2.21M0.0%-0.7%0.020%Search for SEC Filing on Google Icon
11/10/2026Public Sector Pension Investment Board115,143$3.42M0.0%-1.3%0.029%Search for SEC Filing on Google Icon
11/10/2026Global Retirement Partners LLC2,156$59K0.0%-51.6%0.001%Search for SEC Filing on Google Icon
11/10/2026Rothschild Investment LLC7,117$0.20M0.0%-86.5%0.002%Search for SEC Filing on Google Icon
11/10/2026Teachers Retirement System of The State of Kentucky260,050$7.13M0.0%-3.6%0.065%Search for SEC Filing on Google Icon
11/10/2026HighTower Advisors LLC134,146$3.68M0.0%+16.3%0.033%Search for SEC Filing on Google Icon
11/9/2026Cetera Trust Company N.A5,585$0.15M0.1%N/A0.001%Search for SEC Filing on Google Icon
11/9/2026Geneva Capital Management LLC119,509$3.28M0.1%-71.4%0.030%Search for SEC Filing on Google Icon
11/9/2026Bessemer Group Inc.15,364$0.42M0.0%-13.5%0.004%Search for SEC Filing on Google Icon
11/9/2026Hantz Financial Services Inc.14,443$0.40M0.0%+66.2%0.004%Search for SEC Filing on Google Icon
11/9/2026Danske Bank A S82,900$2.27M0.0%-52.4%0.021%Search for SEC Filing on Google Icon
11/6/2026Aberdeen Group plc191,656$5.25M0.0%-38.6%0.048%Search for SEC Filing on Google Icon
11/6/2026EagleClaw Capital Managment LLC30,550$0.84M0.1%-5.3%0.008%Search for SEC Filing on Google Icon
11/6/2026Allworth Financial LP15,474$0.42M0.0%+13.9%0.004%Search for SEC Filing on Google Icon
11/6/2026SVB Wealth LLC23,998$0.66M0.0%-73.4%0.006%Search for SEC Filing on Google Icon
11/6/2026Russell Investments Group Ltd.617,229$16.91M0.0%-19.1%0.153%Search for SEC Filing on Google Icon
11/6/2026Eurizon Capital SGR S.p.A.30,725$0.84M0.0%+9.7%0.008%Search for SEC Filing on Google Icon
11/6/2026R Squared Ltd7,565$0.21M0.1%-20.9%0.002%Search for SEC Filing on Google Icon
11/6/2026Fifth Third Bancorp166,785$4.57M0.0%+46.8%0.041%Search for SEC Filing on Google Icon
11/6/2026Three Bridge Wealth Advisors LLC1,121$31K0.0%N/A0.000%Search for SEC Filing on Google Icon
11/6/2026New Mexico Educational Retirement Board28,350$0.78M0.0%+34.4%0.007%Search for SEC Filing on Google Icon
11/5/2026Maryland State Retirement & Pension System35,734$0.98M0.0%+68.3%0.009%Search for SEC Filing on Google Icon
11/5/2026Machina Capital S.A.S.28,140$0.77M0.1%-33.7%0.007%Search for SEC Filing on Google Icon
11/5/2026Riverbridge Partners LLC1,004,691$27.53M0.8%-8.0%0.250%Search for SEC Filing on Google Icon
11/5/2026Lido Advisors LLC24,930$0.68M0.0%+1.9%0.006%Search for SEC Filing on Google Icon
11/5/2026Keybank National Association OH47,175$1.29M0.0%+175.5%0.012%Search for SEC Filing on Google Icon
11/4/2026New York Life Investment Management LLC80,432$2.20M0.0%+41.8%0.020%Search for SEC Filing on Google Icon
11/4/2026Retirement Systems of Alabama115,225$3.16M0.0%+34.3%0.029%Search for SEC Filing on Google Icon
11/4/2026Fulcrum Asset Management LLP59,086$1.62M0.1%+8,907.0%0.015%Search for SEC Filing on Google Icon
11/4/2026Allspring Global Investments Holdings LLC23,278$0.65M0.0%+3.8%0.006%Search for SEC Filing on Google Icon
11/4/2026Brighton Jones LLC14,251$0.39M0.0%-59.4%0.004%Search for SEC Filing on Google Icon
11/3/2026Ethic Inc.56,291$1.54M0.0%+75.9%0.014%Search for SEC Filing on Google Icon
11/3/2026Kornitzer Capital Management Inc. KS20,846$0.57M0.0%-33.0%0.005%Search for SEC Filing on Google Icon
11/3/2026Pictet Asset Management Holding SA1,129,215$30.94M0.0%-23.2%0.281%Search for SEC Filing on Google Icon
11/3/2026Parallel Advisors LLC26,734$0.73M0.0%+1.8%0.007%Search for SEC Filing on Google Icon
11/3/2026Guidance Capital Inc.25,702$0.70M0.2%+9.1%0.006%Search for SEC Filing on Google Icon
11/3/2026CenterBook Partners LP85,861$2.35M0.1%+20.2%0.021%Search for SEC Filing on Google Icon
11/2/2026Legacies Wealth LLC1,605$44K0.0%N/A0.000%Search for SEC Filing on Google Icon
11/2/2026Commonwealth Equity Services LLC18,914$0.52M0.0%+9.2%0.005%Search for SEC Filing on Google Icon
10/31/2026Hahn Capital Management LLC203,125$5.57M3.3%+352.6%0.050%Search for SEC Filing on Google Icon
10/31/2026Chicago Partners Investment Group LLC23,204$0.79M0.0%-18.0%0.006%Search for SEC Filing on Google Icon
10/30/2026Rakuten Investment Management Inc.46,383$1.25M0.0%-31.8%0.011%Search for SEC Filing on Google Icon
10/30/2026Oregon Public Employees Retirement Fund49,864$1.37M0.0%-0.7%0.012%Search for SEC Filing on Google Icon
10/29/2026Bank Julius Baer & Co. Ltd Zurich1,380$38K0.0%+56.8%0.000%Search for SEC Filing on Google Icon
10/29/2026Greenleaf Trust8,331$0.23M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/29/2026Sumitomo Mitsui Trust Group Inc.79,673$2.18M0.0%-91.4%0.020%Search for SEC Filing on Google Icon
10/29/2026Mirae Asset Global Investments Co. Ltd.103,864$2.85M0.0%N/A0.026%Search for SEC Filing on Google Icon
10/29/2026Profund Advisors LLC7,531$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/29/2026ProShare Advisors LLC78,872$2.16M0.0%+1.4%0.019%Search for SEC Filing on Google Icon
10/29/2026Vise Technologies Inc.9,342$0.26M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/28/2026VIRGINIA RETIREMENT SYSTEMS ET Al170,800$4.68M0.0%N/A0.042%Search for SEC Filing on Google Icon
10/28/2026United Asset Strategies Inc.481,507$13.19M0.9%-1.5%0.119%Search for SEC Filing on Google Icon
10/28/2026D.A. Davidson & CO.31,879$0.87M0.0%+10.3%0.008%Search for SEC Filing on Google Icon
10/28/2026Redmond Asset Management LLC37,600$1.03M0.3%+134.9%0.000%Search for SEC Filing on Google Icon
10/28/2026Motley Fool Asset Management LLC11,462$0.31M0.0%+5.7%0.000%Search for SEC Filing on Google Icon
10/28/2026Pinnacle Wealth Planning Services Inc.2,431$67K0.0%+128.3%0.000%Search for SEC Filing on Google Icon
10/27/2026Asset Management One Co. Ltd.19,404$0.53M0.0%-89.5%0.005%Search for SEC Filing on Google Icon
10/26/2026Park Avenue Securities LLC34,698$0.95M0.0%+43.6%0.009%Search for SEC Filing on Google Icon
10/24/2026Apollon Wealth Management LLC57,858$1.59M0.0%-53.2%0.014%Search for SEC Filing on Google Icon
10/23/2026Signaturefd LLC9,875$0.27M0.0%+262.4%0.002%Search for SEC Filing on Google Icon
10/23/2026Citizens Financial Group Inc. RI9,683$0.27M0.0%-25.4%0.002%Search for SEC Filing on Google Icon
10/23/2026Sowell Financial Services LLC8,109$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/23/2026Gibbs Wealth Management10,125$0.28M0.0%+3.2%0.002%Search for SEC Filing on Google Icon
10/23/2026Sterling Capital Management LLC14,731$0.40M0.0%+32.2%0.004%Search for SEC Filing on Google Icon
10/23/2026Washington Trust Advisors Inc.115,536$3.17M0.2%N/A0.029%Search for SEC Filing on Google Icon
10/22/2026Yousif Capital Management LLC60,237$1.65M0.0%+43.1%0.015%Search for SEC Filing on Google Icon
10/22/2026Root Financial Partners LLC1,764$48K0.0%N/A0.000%Search for SEC Filing on Google Icon
10/21/2026Sowell Financial Services LLC8,109$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/21/2026Quadrant Capital Group LLC18,880$0.52M0.0%N/A0.005%Search for SEC Filing on Google Icon
10/21/2026Nisa Investment Advisors LLC77,768$2.13M0.0%+1,002.3%0.019%Search for SEC Filing on Google Icon
10/21/2026Integrated Advisors Network LLC7,621$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
10/21/2026Diversify Advisory Services LLC29,712$0.81M0.0%+16.2%0.007%Search for SEC Filing on Google Icon
10/20/2026Louisbourg Investments Inc.244,425$6.70M1.2%-4.6%0.060%Search for SEC Filing on Google Icon
10/20/2026Net Worth Advisory Group8,403$0.23M0.1%N/A0.002%Search for SEC Filing on Google Icon
10/20/2026Sumitomo Mitsui DS Asset Management Company Ltd35,232$0.97M0.0%-41.3%0.009%Search for SEC Filing on Google Icon
10/17/2026IFP Advisors Inc8,787$0.24M0.0%+121.4%0.002%Search for SEC Filing on Google Icon
10/17/2026Frank Rimerman Advisors LLC17,410$0.48M0.0%N/A0.004%Search for SEC Filing on Google Icon
10/17/2026Counterpoint Mutual Funds LLC31,294$0.86M0.1%+234.2%0.008%Search for SEC Filing on Google Icon
10/16/2026Vontobel Holding Ltd.11,275$0.31M0.0%+46.6%0.003%Search for SEC Filing on Google Icon
10/16/2026TD Waterhouse Canada Inc.32,263$0.88M0.0%+16,445.1%0.008%Search for SEC Filing on Google Icon
10/15/2026V Square Quantitative Management LLC12,259$0.34M0.0%+48.3%0.003%Search for SEC Filing on Google Icon
10/15/2026Assenagon Asset Management S.A.151,902$4.16M0.0%N/A0.037%Search for SEC Filing on Google Icon
10/15/2026Ninety One UK Ltd392,883$10.77M0.0%-3.8%0.097%Search for SEC Filing on Google Icon
10/15/2026State of Alaska Department of Revenue52,052$1.43M0.0%+30.1%0.013%Search for SEC Filing on Google Icon
10/15/2026Mather Group LLC.3,836$0.11M0.0%-59.7%0.001%Search for SEC Filing on Google Icon
10/14/2026First Citizens Bank & Trust Co.47,256$1.30M0.0%-87.0%0.012%Search for SEC Filing on Google Icon
10/14/2026Krilogy Financial LLC19,225$0.56M0.0%-19.9%0.005%Search for SEC Filing on Google Icon
10/13/2026Salvus Wealth Management LLC11,422$0.31M0.2%-6.0%0.003%Search for SEC Filing on Google Icon
10/13/2026NorthCrest Asset Manangement LLC50,401$1.38M0.0%+307.7%0.012%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
CoStar Group logo
CoStar Group, Inc. provides information, analytics, and online marketplace services to the commercial real estate, hospitality, residential, and related professionals industries in the United States, Canada, Europe, the Asia Pacific, and Latin America. The company offers CoStar Property that provides inventory of office, industrial, retail, multifamily, hospitality, and student housing properties and land; CoStar Sales, a robust database of comparable commercial real estate sales transactions; CoStar Market Analytics to view and report on aggregated market and submarket trends; and CoStar Tenant, an online business-to-business prospecting and analytical tool that provides tenant information. It also provides Leasing, a tool to capture, manage, and maintain lease data; CoStar Lease Analysis; Public Record, a searchable database of commercially zoned parcels; CoStar Real Estate Manager, a real estate lease administration, portfolio management, and lease accounting compliance software solution; and CoStar Risk Analytics and CoStar Investment. In addition, it offers apartment marketing sites, such as ApartmentFinder.com, ForRent.com, ApartmentHomeLiving.com, WestsideRentals.com, AFTER55.com, CorporateHousing.com, ForRentUniversity.com, Apartamentos.com, and Off Campus Partners; LoopNet Premium Lister; LoopNet Diamond, Platinum, and Gold Ads; LandsofAmerica.com, LandAndFarm.com, and LandWatch.com for rural land for-sale; BizBuySell.com, BizQuest.com, and FindaFranchise.com for operating businesses and franchises for-sale; Ten-X, an online auction platform for commercial real estate; and HomeSnap, an online and mobile software platform, as well as Homes.com, a homes for sale listings site. The company was founded in 1987 and is headquartered in Washington, the District of Columbia.
Read More on CoStar Group

Today's Range

Now: $30.10
Low: $30.00
High: $30.75

50 Day Range

MA: $30.18
Low: $26.95
High: $35.45

52 Week Range

Now: $30.10
Low: $25.89
High: $70.57

Volume

2,750,314 shs

Average Volume

6,988,575 shs

Market Capitalization

$12.11 billion

P/E Ratio

68.41

Dividend Yield

N/A

Beta

0.79

Who are the company insiders with the largest holdings of CoStar Group?

CoStar Group's top insider investors include:
  1. Michael R Klein (Director)
  2. Andrew C Florance (CEO)
  3. Scott T Wheeler (CFO)
  4. Frederick G Saint (Insider)
  5. Frank Simuro (CTO)
  6. Lisa Ruggles (VP)
  7. Andrew C Florance (CEO)
  8. Warren Haber (Director)
  9. Michael J Desmarais (Insider)
  10. Brian Radecki (CFO)
Learn More about top insider investors at CoStar Group.

Who are the major institutional investors of CoStar Group?

CoStar Group's top institutional investors include:
  1. State Street Corp — 5.70%
  2. Pictet Asset Management Holding SA — 0.28%
  3. Riverbridge Partners LLC — 0.25%
  4. Russell Investments Group Ltd. — 0.15%
  5. United Asset Strategies Inc. — 0.12%
  6. Ninety One UK Ltd — 0.10%
Learn More about top institutional investors of CoStar Group stock.

Which institutional investors are selling CoStar Group stock?

Within the last quarter, CSGP stock was sold by these institutional investors:
  1. State Street Corp
  2. Sumitomo Mitsui Trust Group Inc.
  3. Pictet Asset Management Holding SA
  4. First Citizens Bank & Trust Co.
  5. Geneva Capital Management LLC
  6. Ieq Capital LLC
  7. Asset Management One Co. Ltd.
  8. Russell Investments Group Ltd.

Which institutional investors are buying CoStar Group stock?

During the last quarter, CSGP stock was purchased by institutional investors including:
  1. VIRGINIA RETIREMENT SYSTEMS ET Al
  2. Hahn Capital Management LLC
  3. Assenagon Asset Management S.A.
  4. Washington Trust Advisors Inc.
  5. Mirae Asset Global Investments Co. Ltd.
  6. Nisa Investment Advisors LLC
  7. Fulcrum Asset Management LLP
  8. Fifth Third Bancorp
During the last year, these company insiders have bought CoStar Group stock:
  1. Andrew C Florance (CEO)
  2. Louise S Sams (Director)
Learn More investors buying CoStar Group stock.

CoStar Group Active Insiders

Andrew C Florance
Andrew C Florance (Age 62)
CEO
1 recent trades
Scott T. Wheeler
Scott T. Wheeler (Age 62)
CFO
Laura Cox Kaplan
Laura Cox Kaplan (Age 55)
Director
John W Hill
John W Hill
Director
Frank Simuro
Frank Simuro (Age 59)
CTO
Michael R Klein
Michael R Klein
Director
Louise S Sams
Louise S Sams
Director
Lisa Ruggles
Lisa Ruggles (Age 58)
VP
Frederick G. Saint
Frederick G. Saint (Age 60)
Insider
Michael J Desmarais
Michael J Desmarais
Insider