Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:b33655b2-7aae-3994-02b8-70942dd190c5 2026-06-27T16:46:33-04:00 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: GLASER RACHEL C (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:5242df74-d648-bd6d-9546-105f9d248303 2026-06-24T21:14:03-04:00 CSGP: BERISFORD JOHN L (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:9d557aeb-fc9a-0918-2e09-7cfeac2cbcca 2026-06-24T21:13:57-04:00 CSGP: HILL JOHN W (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:4a29e85e-f53c-1f7f-5ac9-8debd6a1ca15 2026-06-24T21:13:51-04:00 CSGP: BRUNNER ANGELIQUE G (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:4ee93774-7f66-f7d3-af29-6c19e4d166e9 2026-06-24T21:13:45-04:00 CSGP: MUSSLEWHITE ROBERT W (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:7a506563-f09f-47cb-e34c-90d830ebd2e8 2026-06-24T21:13:39-04:00 CSGP: SAMS LOUISE S (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:d3d4cc81-6759-a246-98c1-c4054103ada5 2026-06-24T21:13:33-04:00 CSGP: MCCARTHY CHRISTINE M (DIR) Acquired (JB) 8,262 Shares of COSTAR GROUP INC for $0.00 on 6/23 urn:uuid:87b280d1-8cd2-6264-f776-80dd484e96dc 2026-06-24T21:12:42-04:00 CSGP: CANN CYNTHIA CAMMETT (CAO) Disposed (JS) 461 Shares of COSTAR GROUP INC for $32.04 on 6/15 urn:uuid:41ca79db-7b48-c4ca-128d-2705e452bf6b 2026-06-16T17:32:12-04:00 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