Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:b33655b2-7aae-3994-02b8-70942dd190c5 2026-05-13T07:32:45-04:00 Jonathan Moreland Profit from legal insider trading. InsiderInsights.com provides free insider trading data tools and resources, and professional grade subscription based real time Form 4 data, analysis and services CSGP: FLORANCE ANDREW C (PR,CEO,DIR) Bought (B) 71,430 Shares of COSTAR GROUP INC for $35.17-$35.82 on 5/1 urn:uuid:e1960ec0-1e66-8c0e-7512-c4d6627e8e92 2026-05-04T06:01:03-04:00 CSGP: MCCARTHY CHRISTINE M (DIR) Filed a Form 3, Becoming a Registered Insider at COSTAR GROUP INC With Initial Direct Holdings of 350 urn:uuid:87e75e50-fb78-cfbe-b81b-a01fee57e82e 2026-04-02T16:49:58-04:00 CSGP: BOXER GENE (GC,SEC) Disposed (JS) 482 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:cea30067-10de-ed62-4c00-475ef97ab909 2026-03-17T17:47:58-04:00 CSGP: RUGGLES LISA (VP,OO) Disposed (JS) 2,977 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:efc39b81-cd5d-6190-0291-f140466aa3db 2026-03-17T16:12:44-04:00 CSGP: BOXER GENE (GC,SEC) Disposed (JS) 428 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:e93b853e-ebe5-3dde-bbdc-2cb0d6838316 2026-03-17T16:12:38-04:00 CSGP: SIMURO FRANK (CTO) Disposed (JS) 11,107 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:79206b00-359b-b50c-8c0c-7f6d8867e228 2026-03-17T16:12:32-04:00 CSGP: BANERJEE NANA (DIR) Filed a Form 3, Becoming a Registered Insider at COSTAR GROUP INC With Initial Holdings of 0 urn:uuid:65434ba6-a857-d967-b309-4cd2a6aa2573 2026-03-17T16:12:22-04:00 CSGP: DESMARAIS MICHAEL J (HR) Disposed (JS) 2,873 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:39cb0a43-d5bf-c43b-6b63-5ace59ef932c 2026-03-17T16:12:16-04:00 CSGP: CANN CYNTHIA CAMMETT (CAO) Disposed (JS) 1,194 Shares of COSTAR GROUP INC for $43.63 on 3/15 urn:uuid:82b6e7d9-40d3-b1b7-5fb0-c61bd5190faf 2026-03-17T16:12:10-04:00 CSGP: CANN CYNTHIA CAMMETT (CAO) Acquired (JB) 4,374 Shares of COSTAR GROUP INC for $0.00 on 3/10 urn:uuid:6713119a-6ad8-8d48-a5ca-cdae6c8c5849 2026-03-11T17:18:22-04:00