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CoStar Group Inc (CSGP) Insider Trading

Total insider buys:
  • $1,202,969.27
Total insider sells:
  • $324,518,845.31
Most recent insider trade:
  • July 28, 2025
Most active insider trader:
  • Andrew C. Florance
Trader NameDateTitleAmountPriceTypeTotal Value
July 28, 2025CAO2,033$92.85Sell$188,764.05
July 28, 2025Insider25,000$93.23Sell$2,330,750.00
March 10, 2025CAO1,749$79.90Sell$139,745.10
Nov. 26, 2024Insider5,500$79.88Sell$439,340.00
Oct. 25, 2024CEO14,731$74.67Buy$1,099,963.77
Oct. 25, 2024Director71,633$74.69Sell$5,350,268.77
July 30, 2024Director1,325$77.74Buy$103,005.50
April 26, 2024Insider3,800$92.67Sell$352,146.00
April 26, 2024CFO122,736$92.61Sell$11,366,580.96
Nov. 28, 2023Director3,020$84.07Sell$253,891.40
June 30, 2023VP30,474$91.42Sell$2,785,933.08
June 28, 2023CFO21,530$89.30Sell$1,922,629.00
June 27, 2023CTO92,300$89.65Sell$8,274,695.00
June 26, 2023Director1,500$86.57Sell$129,855.00
June 12, 2023CFO24,670$80.68Sell$1,990,375.60
March 8, 2023Insider5,600$70.36Sell$394,016.00
Nov. 3, 2022Director3,650$78.92Sell$288,058.00
Oct. 28, 2022Insider1,296$82.81Sell$107,321.76
Aug. 10, 2022Director1,400$74.49Sell$104,286.00
Aug. 3, 2022Insider2,000$72.51Sell$145,020.00
May 24, 2022Director1,750$57.07Sell$99,872.50
May 2, 2022Insider1,000$63.14Sell$63,140.00
Nov. 11, 2021CFO85$81.72Sell$6,946.20
Nov. 5, 2021Director4,040$83.29Sell$336,491.60
Oct. 29, 2021Director9,235$86.97Sell$803,167.95
Aug. 9, 2021Director6,160$85.77Sell$528,343.20
April 30, 2021Director1,062$869.03Sell$922,909.86
March 23, 2021Insider7,834$831.70Sell$6,515,537.80
March 16, 2021CFO7,326$843.28Sell$6,177,869.28
March 10, 2021CEO19,570$818.37Sell$16,015,500.90
Sept. 2, 2020VP7,596$870.00Sell$6,608,520.00
Aug. 26, 2020CEO15,584$848.16Sell$13,217,725.44
Aug. 12, 2020VP2,419$826.32Sell$1,998,868.08
March 3, 2020CFO6,005$703.26Sell$4,223,076.30
March 2, 2020CEO33,600$663.90Sell$22,307,040.00
Nov. 19, 2019Director576$591.60Sell$340,761.60
Oct. 25, 2019Director406$570.99Sell$231,821.94
July 31, 2019VP14,651$617.39Sell$9,045,380.89
July 26, 2019CFO6,933$629.50Sell$4,364,323.50
July 26, 2019CEO24,210$628.64Sell$15,219,374.40
June 24, 2019Director315$553.23Sell$174,267.45
March 4, 2019Insider55,322$473.38Sell$26,188,328.36
March 1, 2019VP4,701$477.31Sell$2,243,834.31
March 1, 2019CFO5,396$476.11Sell$2,569,089.56
Dec. 26, 2018Director1,042$330.88Sell$344,776.96
Oct. 29, 2018Director571$349.67Sell$199,661.57
Aug. 6, 2018Director15,000$420.69Sell$6,310,350.00
July 30, 2018VP4,384$411.93Sell$1,805,901.12
July 27, 2018VP32,671$421.87Sell$13,782,914.77
July 27, 2018CFO4,700$426.02Sell$2,002,294.00
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  • Insiders are both buying and selling CoStar Group Inc stock.

  • The insider traders at CoStar Group Inc are: Andrew C. Florance, Francis Carchedi, Matthew Linnington, John W Hill, Scott T. Wheeler, Michael J Desmarais, Andrew C Florance, Brian J Radecki, Scott T Wheeler, John W. Hill, Laura Cox Kaplan, Michael R. Klein, Christopher J. Nassetta, John L Stanfill, Christopher Nassetta, Cynthia Cammett Cann, Jennifer Kitchen, Lisa Ruggles, Frederick G. Saint, Warren Haber, Frederick G Saint, Frank Simuro, Michael J. Glosserman, Michael R Klein, David Jay Steinberg, Christopher J Nassetta, Brian Radecki, and John Stanfill

  • The most active insider trader at CoStar Group Inc is Andrew C. Florance with 12 trades.

  • Andrew C. Florance has sold the most CoStar Group Inc stock with a total value of $134,703,503.43.

  • Andrew C Florance has bought the most CoStar Group Inc stock with a total value of $2,199,927.54.

  • The most recent insider trade for CoStar Group Inc was on July 28, 2025.

  • The single biggest insider buy for CoStar Group Inc was from Andrew C Florance with a total value of $1,099,963.77 on Oct. 25, 2024.

  • The single biggest insider sell for CoStar Group Inc was from Andrew C. Florance with a total value of $26,188,328.36 on March 4, 2019.