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Home/Companies/CoStar Group, Inc.

CoStar Group, Inc.

86 insider trades tracked

CSGP
Insider trades
86
Bought (open market)
$8.5M
Sold (open market)
$5.3M
Unique insiders
16

12-month activity

Monthly insider buy vs sell totals for CoStar Group, Inc..

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$281K2
December 2025$0$00
January 2026$0$00
February 2026$2.5M$021
March 2026$1000K$021
April 2026$0$00
May 2026$2.5M$02
June 2026$0$08
July 2026$0$03
August 2026$2.5M$253K5
September 2026$0$00

Recent insider trades

Most recent Form 4 filings for CoStar Group, Inc..

  • Cann Cynthia Cammettsold4,788 shares ofCSGPat $30.78$147KAug 7 · filed Aug 10Details
  • Hill John Wsold3,500 shares ofCSGPat $30.21$106KAug 5 · filed Aug 10Details
  • FLORANCE ANDREW Cbought83,300 shares ofCSGPat $29.89$2.5MAug 4 · filed

Insiders at this company

Executives and directors who have filed Form 4s.

  • SIMURO FRANK13 trades
  • Cann Cynthia Cammett11 trades
  • SAINT FREDERICK G.10 trades
  • FLORANCE ANDREW C10 trades
  • DESMARAIS MICHAEL J8 trades
  • Ruggles Lisa6 trades
  • LOWN CHRISTIAN M.5 trades
  • Hill John W4 trades

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Aug 5
Details
  • Cann Cynthia Cammetttax-withheld1,077 shares ofCSGPat $28.76$31KAug 1 · filed Aug 4Details
  • SAINT FREDERICK G.tax-withheld1,436 shares ofCSGPat $28.76$41KAug 1 · filed Aug 4Details
  • Cann Cynthia Cammettgranted26,078 shares ofCSGPat $0Jul 31 · filed Aug 4Details
  • Rossmann Robin Jackgranted34,771 shares ofCSGPat $0Jul 31 · filed Aug 4Details
  • LOWN CHRISTIAN M.tax-withheld5,597 shares ofCSGPat $29.36$164KJul 1 · filed Jul 6Details
  • Sams Louise Sgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • Brunner Angelique G.granted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • McCarthy Christine Mgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • Glaser Rachel Cgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • BERISFORD JOHN Lgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • Musslewhite Robert Wgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • Hill John Wgranted8,262 shares ofCSGPat $0Jun 23 · filed Jun 24Details
  • Cann Cynthia Cammetttax-withheld461 shares ofCSGPat $32.04$15KJun 15 · filed Jun 16Details
  • FLORANCE ANDREW Cbought3,100 shares ofCSGPat $35.82$111KMay 1 · filed May 4Details
  • FLORANCE ANDREW Cbought68,330 shares ofCSGPat $35.17$2.4MMay 1 · filed May 4Details
  • SIMURO FRANKtax-withheld11,107 shares ofCSGPat $43.63$485KMar 15 · filed Mar 17Details
  • DESMARAIS MICHAEL Jtax-withheld2,873 shares ofCSGPat $43.63$125KMar 15 · filed Mar 17Details
  • Boxer Genetax-withheld428 shares ofCSGPat $43.63$19KMar 15 · filed Mar 17Details
  • Ruggles Lisatax-withheld2,977 shares ofCSGPat $43.63$130KMar 15 · filed Mar 17Details
  • Cann Cynthia Cammetttax-withheld1,194 shares ofCSGPat $43.63$52KMar 15 · filed Mar 17Details
  • DESMARAIS MICHAEL Jgranted17,676 shares ofCSGPMar 10 · filed Mar 11Details
  • Boxer Genegranted21,920 shares ofCSGPMar 10 · filed Mar 11Details
  • LOWN CHRISTIAN M.granted12,268 shares ofCSGPMar 10 · filed Mar 11Details
  • Cann Cynthia Cammettgranted4,374 shares ofCSGPMar 10 · filed Mar 11Details
  • FLORANCE ANDREW Cgranted124,162 shares ofCSGPMar 10 · filed Mar 11Details
  • Sams Louise Sbought1,000 shares ofCSGPat $48.36$48KMar 6 · filed Mar 9Details
  • SAINT FREDERICK G.bought20,000 shares ofCSGPat $45.33$907KMar 2 · filed Mar 3Details
  • View all trades for CSGP →
    Boxer Gene
    4 trades
  • Glaser Rachel C3 trades
  • Sams Louise S3 trades
  • McCarthy Christine M2 trades
  • Musslewhite Robert W2 trades
  • BERISFORD JOHN L2 trades
  • Brunner Angelique G.2 trades
  • Rossmann Robin Jack1 trades