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Insider Trading Tracker

CSGP

COSTAR GROUP, INC.
Buys$9.6M8 txns
Sells$13.8M15 txns
Net-$4.2M

Insiders

InsiderRoleHoldingsBuy $Sell $Net $
Andrew C FloranceFounder and CEO, Director1,806,165$8,584,666$8,584,666
Frederick G. SaintPresident, Marketplaces278,415$906,600$6,616,500-$5,709,900
Michael R KleinDirector1,848,592$5,350,269-$5,350,269
Cynthia Cammett CannChief Accounting Officer18,822$797,040-$797,040
John W HillDirector22,993$470,204-$470,204
Michael J DesmaraisChief Human Resources Officer87,725$439,340-$439,340
Christopher J NassettaDirector229,715$135,136-$135,136
Louise S SamsDirector28,671$48,360$48,360
Rachel C GlaserDirector12,419$44,940$44,940

Transaction History

DateInsiderSideSharesPriceValueHoldings After% of Position
2026-08-07Cynthia Cammett CannSELL4,788$30.78$147,37518,82220%
2026-08-05John W HillSELL3,500$30.21$105,73522,99313%
2026-08-04Andrew C FloranceBUY83,300$29.89$2,489,8371,806,1655%
2026-05-01Andrew C FloranceBUY68,330$35.17$2,403,1661,719,7654%
2026-05-01Andrew C FloranceBUY3,100$35.82$111,0421,722,8650%
2026-03-06Louise S SamsBUY1,000$48.36$48,36020,4095%
2026-03-02Rachel C GlaserBUY1,000$44.94$44,9404,15732%
2026-03-02Frederick G. SaintBUY20,000$45.33$906,600279,8518%
2026-02-27Andrew C FloranceBUY55,720$44.52$2,480,6541,586,8664%
2025-11-13John W HillSELL2,250$68.68$154,53018,23111%
2025-11-13Cynthia Cammett CannSELL1,841$68.79$126,64223,2117%
2025-08-28Frederick G. SaintSELL25,000$90.33$2,258,250293,1038%
2025-07-28Frederick G. SaintSELL25,000$93.23$2,330,750319,5397%
2025-07-28Cynthia Cammett CannSELL2,033$92.85$188,76425,7717%
2025-06-11Frederick G. SaintSELL25,000$81.10$2,027,500344,5397%
2025-03-10Cynthia Cammett CannSELL1,749$79.90$139,74529,4566%
2024-12-10John W HillSELL2,735$76.76$209,93917,49914%
2024-11-27Christopher J NassettaSELL1,681$80.39$135,136229,7151%
2024-11-26Michael J DesmaraisSELL5,500$79.88$439,34058,7989%
2024-11-11Cynthia Cammett CannSELL1,310$76.85$100,67426,4855%
2024-10-25Michael R KleinSELL71,633$74.69$5,350,2691,913,5014%
2024-10-25Andrew C FloranceBUY14,731$74.67$1,099,9661,263,0981%
2024-07-31Cynthia Cammett CannSELL1,200$78.20$93,84027,7954%