{"filing":{"accession_number":"0001057352-26-000054","cik":"0001057352","ticker":"CSGP","company_name":"COSTAR GROUP, INC.","form":"8-K","filing_date":"2026-07-13","report_date":null,"primary_document":"csgp-20260707.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1057352/000105735226000054/csgp-20260707.htm"},"events":[{"id":17655,"run_id":15822,"accession_number":"0001057352-26-000054","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.93,"summary":"Robin Rossmann was appointed Chief Financial Officer of CoStar Group effective July 31, 2026, succeeding Christian Lown. The appointment includes significant compensatory arrangements ($590,000 base salary, $2.5M equity grant, $500K relocation subsidy) and is material as it involves a key C-suite executive position.","company_name":"COSTAR GROUP, INC.","ticker":"CSGP","filing_date":"2026-07-13","form":"8-K","submitted_at":null,"items":[{"id":16208,"accession_number":"0001057352-26-000054","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"Robin Rossmann was appointed Chief Financial Officer effective July 31, 2026, succeeding Christian Lown. While the filing also discloses Lown's departure, the principal action disclosed is Rossmann's appointment to a C-suite officer role. The appointment is material as it involves a key executive position (CFO) and includes significant compensatory arrangements ($590,000 base salary, $2.5M equity grant, $500K relocation subsidy).","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-13T21:07:40.238867+00:00","company_name":"","ticker":null,"filing_date":""},{"id":16209,"accession_number":"0001057352-26-000054","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The filing discloses the appointment of Robin Rossmann as Chief Financial Officer of CoStar Group, effective July 31, 2026, succeeding Christian Lown. While the disclosure also mentions Lown's departure, the principal action and focus of the press release is Rossmann's appointment to the CFO role, emphasizing his qualifications, track record in reducing European costs by 25% while driving revenue growth, and his expected leadership of the global finance organization. This is a material executive appointment at the C-suite level.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-13T21:07:40.238867+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":16208,"accession_number":"0001057352-26-000054","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"Robin Rossmann was appointed Chief Financial Officer effective July 31, 2026, succeeding Christian Lown. While the filing also discloses Lown's departure, the principal action disclosed is Rossmann's appointment to a C-suite officer role. The appointment is material as it involves a key executive position (CFO) and includes significant compensatory arrangements ($590,000 base salary, $2.5M equity grant, $500K relocation subsidy).","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-13T21:07:40.238867+00:00","company_name":"COSTAR GROUP, INC.","ticker":"CSGP","filing_date":"2026-07-13"},{"id":16209,"accession_number":"0001057352-26-000054","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The filing discloses the appointment of Robin Rossmann as Chief Financial Officer of CoStar Group, effective July 31, 2026, succeeding Christian Lown. While the disclosure also mentions Lown's departure, the principal action and focus of the press release is Rossmann's appointment to the CFO role, emphasizing his qualifications, track record in reducing European costs by 25% while driving revenue growth, and his expected leadership of the global finance organization. This is a material executive appointment at the C-suite level.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-13T21:07:40.238867+00:00","company_name":"COSTAR GROUP, INC.","ticker":"CSGP","filing_date":"2026-07-13"}]}