CoStar Group (CSGP) Insider Trading & Ownership $80.23 +0.09 (+0.11%) As of 04:00 PM Eastern Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock CoStar Group (NASDAQ:CSGP) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage1.57%Number OfInsiders Buying(Last 12 Months)1Amount OfInsider Buying(Last 12 Months)$1.10 MNumber OfInsiders Selling(Last 12 Months)4Amount OfInsider Selling(Last 12 Months)$17.84 M Get CSGP Insider Trade Alerts Want to know when executives and insiders are buying or selling CoStar Group stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address CSGP Insider Buying and Selling by Quarter Remove Ads CoStar Group Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame * Start Date * End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails3/10/2025Cynthia Cammett CannCAOSell1,749$79.90$139,745.10 2/24/2025Jefferson ShreveU.S. Congress Member (R-IN)Buy$77.49$15,001 - $50,0001/21/2025William R. KeatingU.S. Congress Member (D-MA)Buy$74.16$1,001 - $15,0001/15/2025Julie JohnsonU.S. Congress Member (D-TX)Sell$73.22$1,001 - $15,00011/26/2024Michael J DesmaraisInsiderSell5,500$79.88$439,340.00 11/11/2024Cynthia Cammett CannCAOSell1,310$76.85$100,673.50 10/25/2024Andrew C FloranceCEOBuy14,731$74.67$1,099,963.77 10/25/2024Michael R KleinDirectorSell71,633$74.69$5,350,268.77 7/31/2024Cynthia Cammett CannCAOSell1,200$78.20$93,840.00 4/26/2024Michael J DesmaraisInsiderSell3,800$92.67$352,146.00 4/26/2024Scott T WheelerCFOSell122,736$92.61$11,366,580.96 (Data available from 1/1/2013 forward) CSGP Insider Trading Activity - Frequently Asked Questions Who is on CoStar Group's Insider Roster? The list of insiders at CoStar Group includes Andrew C Florance, Cynthia Cammett Cann, Frank Simuro, John W Hill, Lisa Ruggles, Michael J Desmarais, Michael R Klein, and Scott T Wheeler. Learn more on insiders at CSGP. What percentage of CoStar Group stock is owned by insiders? 1.57% of CoStar Group stock is owned by insiders. Learn more on CSGP's insider holdings. Which CoStar Group insiders have been buying company stock? The following insider purchased CSGP shares in the last 24 months: Andrew C Florance ($1,099,963.77). How much insider buying is happening at CoStar Group? Insiders have purchased a total of 14,731 CSGP shares in the last 24 months for a total of $1,099,963.77 bought. Which CoStar Group insiders have been selling company stock? The following insiders have sold CSGP shares in the last 24 months: Cynthia Cammett Cann ($334,258.60), Frank Simuro ($8,274,695.00), John W Hill ($383,746.40), Lisa Ruggles ($2,785,933.08), Michael J Desmarais ($791,486.00), Michael R Klein ($5,350,268.77), and Scott T Wheeler ($15,279,585.56). How much insider selling is happening at CoStar Group? Insiders have sold a total of 381,422 CoStar Group shares in the last 24 months for a total of $33,199,973.41 sold. Which members of congress are trading CoStar Group? Jefferson Shreve (R-IN) and William R. Keating (D-MA) have bought shares of CoStar Group in the last year totaling $40,500. Julie Johnson (D-TX) has sold shares totaling $8,000. CoStar Group Key ExecutivesMr. Andrew C. Florance (Age 60)President, Founder, CEO & Director Compensation: $3.83M1 recent tradesMs. Lisa C. Ruggles (Age 57)Senior Vice President of Global Operations Compensation: $1.55MMr. Frank A. Simuro (Age 57)Chief Technology Officer Compensation: $1.68MMr. Frederick G. Saint (Age 58)President of Marketplaces Compensation: $1.36MMr. Christian M. Lown (Age 54)Chief Financial Officer Ms. Cyndi EakinCAO & CotrollerMr. Jason ButlerChief Information OfficerMr. Richard SimonelliHead of Investor RelationsMr. Gene Boxer (Age 49)General Counsel & Corporate Secretary Mr. Matthew R. 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Why Investors Should Stay Bullish 3 Companies Buying Back Stock—Why It Matters This page (NASDAQ:CSGP) was last updated on 3/25/2025 by MarketBeat.com Staff From Our PartnersA brutally honest economic warning for 2025 (see proof)New York Times best-selling financial author and world-renowned economist Addison Wiggin (a man who’s worked s...Banyan Hill Publishing | Sponsored$2 Trillion Disappears Because of Fed's Secretive New Move$2 trillion has disappeared from the US government's books. The reason why is a new, secretive move being c...Stansberry Research | SponsoredHas Trump finally met his match?Dylan Jovine predicted the 2008 crash over a year before it happened. Folks who listened to him had the chance...Behind the Markets | SponsoredCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... 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