{"schema_version":"alpha-governance-record-v2","alpha_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce","ontology_version":"alpha-governance-ontology-v1","as_of":"2026-10-09T03:43:16.751675+00:00","published_at":"2026-10-08T04:45:28.734015+00:00","section":"events","data":{"state":"PUBLISHED","derivation_version":"alpha-governance-event-derivation-v2","events":[{"event_id":"alpha:event:transition:bmtlxz152sr77","event_type":"GC_CHANGED","effective_at":"2026-04-30","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:gene-boxer","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:20"],"evidence_ids":["alpha:projection-evidence:document:b5d5d186f5a75fb271cdb64c8cc2ab7ada30602b6cde4b518952eca15a888ab7"],"summary":"Gene Boxer executive of CoStar Group, effective 2026-04-30.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:dp1hmhifje09","event_type":"DIRECTOR_APPOINTED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:christine-m-mccarthy","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:10"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Christine M. McCarthy seat on CoStar Group, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:ibzyei97f4do","event_type":"DIRECTOR_APPOINTED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:john-l-berisford","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:11"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"John L. Berisford seat on CoStar Group, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:okbae53zt2x1","event_type":"DIRECTOR_APPOINTED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:rachel-c-glaser","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Rachel C. Glaser seat on CoStar Group, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:r3s2kt103bjf1","event_type":"COMMITTEE_CREATED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:committee:costar-group-inc:audit-nominating-and-corporate-governance","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Audit; Nominating and Corporate Governance committee of CoStar Group, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1xbqpwmqsly5w","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:rachel-c-glaser","alpha:committee:costar-group-inc:audit-nominating-and-corporate-governance"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Rachel C. Glaser member of Audit; Nominating and Corporate Governance, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:xx7e6d2vp4s","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2025-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:christine-m-mccarthy","alpha:committee:costar-group-inc:nominating-and-corporate-governance"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_record:30"],"evidence_ids":["alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c"],"summary":"Christine M. McCarthy member of Nominating and Corporate Governance, effective 2025-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1qb472jbc1wxj","event_type":"DIRECTOR_APPOINTED","effective_at":"2023-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:angelique-g-brunner","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Angelique G. Brunner seat on CoStar Group, effective 2023-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1ruufj7v3ffpr","event_type":"COMMITTEE_CREATED","effective_at":"2023-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:committee:costar-group-inc:audit-compensation","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Audit; Compensation committee of CoStar Group, effective 2023-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1fk310x11auua7","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2023-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:angelique-g-brunner","alpha:committee:costar-group-inc:audit-compensation"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Angelique G. Brunner member of Audit; Compensation, effective 2023-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1fnktfn1htenhl","event_type":"DIRECTOR_APPOINTED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:louise-s-sams","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Louise S. Sams seat on CoStar Group, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:5vn79n16gl28j","event_type":"DIRECTOR_APPOINTED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:robert-w-musslewhite","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Robert W. Musslewhite seat on CoStar Group, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:38m2rdcq7nzz","event_type":"COMMITTEE_CREATED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:committee:costar-group-inc:compensation-chair","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Compensation · Chair committee of CoStar Group, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:c5ybwr18kpm0r","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:robert-w-musslewhite","alpha:committee:costar-group-inc:compensation-chair"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Robert W. Musslewhite member of Compensation · Chair, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:whinchna7v31","event_type":"COMMITTEE_CREATED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:committee:costar-group-inc:nominating-and-corporate-governance-chair-audit","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Nominating and Corporate Governance · Chair; Audit committee of CoStar Group, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:18ptqk41ogcpe4","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2019-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:louise-s-sams","alpha:committee:costar-group-inc:nominating-and-corporate-governance-chair-audit"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Louise S. Sams member of Nominating and Corporate Governance · Chair; Audit, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:wytaizj69rfz","event_type":"DIRECTOR_APPOINTED","effective_at":"2012-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:john-w-hill","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"John W. Hill seat on CoStar Group, effective 2012-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1yutsmdravlfn","event_type":"COMMITTEE_CREATED","effective_at":"2012-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:committee:costar-group-inc:audit-chair","alpha:company:e67179da-7881-493b-bfa6-082017606635"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"Audit · Chair committee of CoStar Group, effective 2012-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:ktr4gw1y5z7be","event_type":"COMMITTEE_MEMBER_ADDED","effective_at":"2012-01-01","detected_at":"2026-10-08T04:45:28.734015+00:00","subject_ids":["alpha:person:john-w-hill","alpha:committee:costar-group-inc:audit-chair"],"caused_claim_ids":["alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12"],"evidence_ids":["alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e"],"summary":"John W. Hill member of Audit · Chair, effective 2012-01-01.","derivation":"temporal_relationship_change"}]},"claims":[{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:angelique-g-brunner","object_label":"Angelique G. Brunner","object_source_name_forms":[],"value":"Angelique G. Brunner: Director, Audit; Compensation","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:angelique-g-brunner","name":"Angelique G. Brunner"},"title":"Director","role_category":"director","committee":"Audit; Compensation","is_board_chair":false,"is_independent":true,"start_date":"2023-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2023-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2023-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:10","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:christine-m-mccarthy","object_label":"Christine M. McCarthy","object_source_name_forms":[],"value":"Christine M. McCarthy: Director, Nominating and Corporate Governance","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:christine-m-mccarthy","name":"Christine M. McCarthy"},"title":"Director","role_category":"director","committee":"Nominating and Corporate Governance","is_board_chair":false,"is_independent":true,"start_date":"2025-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2025-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2025-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:11","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:john-l-berisford","object_label":"John L. Berisford","object_source_name_forms":[],"value":"John L. Berisford: Director, Compensation","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:john-l-berisford","name":"John L. Berisford"},"title":"Director","role_category":"director","committee":"Compensation","is_board_chair":false,"is_independent":true,"start_date":"2025-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2025-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2025-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:john-w-hill","object_label":"John W. Hill","object_source_name_forms":[],"value":"John W. Hill: Director, Audit · Chair","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:john-w-hill","name":"John W. Hill"},"title":"Director","role_category":"director","committee":"Audit · Chair","is_board_chair":false,"is_independent":true,"start_date":"2012-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2012-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2012-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:louise-s-sams","object_label":"Louise S. Sams","object_source_name_forms":[],"value":"Louise S. Sams: Director, Nominating and Corporate Governance · Chair; Audit","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:louise-s-sams","name":"Louise S. Sams"},"title":"Director","role_category":"director","committee":"Nominating and Corporate Governance · Chair; Audit","is_board_chair":false,"is_independent":true,"start_date":"2019-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2019-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2019-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:rachel-c-glaser","object_label":"Rachel C. Glaser","object_source_name_forms":[],"value":"Rachel C. Glaser: Director, Audit; Nominating and Corporate Governance","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:rachel-c-glaser","name":"Rachel C. Glaser"},"title":"Director","role_category":"director","committee":"Audit; Nominating and Corporate Governance","is_board_chair":false,"is_independent":true,"start_date":"2025-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2025-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2025-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:robert-w-musslewhite","object_label":"Robert W. Musslewhite","object_source_name_forms":[],"value":"Robert W. Musslewhite: Director, Compensation · Chair","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"board_seat","person":{"alpha_id":"alpha:person:robert-w-musslewhite","name":"Robert W. Musslewhite"},"title":"Director","role_category":"director","committee":"Compensation · Chair","is_board_chair":false,"is_independent":true,"start_date":"2019-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2019-01-01","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30","effective_from":"2019-01-01","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"unconfirmed","review_state":"none","confidence":0.85,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:20","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasExecutiveRole","object_id":"alpha:person:gene-boxer","object_label":"Gene Boxer","object_source_name_forms":[],"value":"Gene Boxer: General Counsel and Corporate Secretary","claim_type":"leadership_role","predicate_id":"alpha:predicate:leadership_role","predicate_version":1,"machine_key":"leadership_role","human_label":"Leadership Role","governed_predicate":true,"machine_value":{"kind":"executive_role","person":{"alpha_id":"alpha:person:gene-boxer","name":"Gene Boxer"},"title":"General Counsel and Corporate Secretary","role_category":"executive","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2026-04-30","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2026-04-30","valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:document:b5d5d186f5a75fb271cdb64c8cc2ab7ada30602b6cde4b518952eca15a888ab7","identity_scope":"source_document_reference","source_type":"sec_filing","title":"CSGP DEF 14A executive officers","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30T00:00:00+00:00","retrieved_at":"2026-05-15T21:44:25.107149+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":"2026-04-30T00:00:00+00:00","effective_from":"2026-04-30","effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.94,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_record:30","subject_id":"alpha:company:e67179da-7881-493b-bfa6-082017606635","predicate":"alpha:hasBoardCommittee","object_id":null,"object_label":null,"object_source_name_forms":[],"value":"Nominating and Corporate Governance: Chair Louise S. Sams; Members Louise S. Sams (Chair); Christine M. McCarthy; Rachel C. Glaser","claim_type":"committee_record","predicate_id":"alpha:predicate:committee_record","predicate_version":1,"machine_key":"committee_record","human_label":"Committee Record","governed_predicate":true,"machine_value":{"name":"Nominating and Corporate Governance","canonical_type":"nominating_governance","chair":"Louise S. Sams","members":[{"display_name":"Louise S. Sams","person_slug":"louise-s-sams","is_chair":true},{"display_name":"Christine M. McCarthy","person_slug":"christine-m-mccarthy","is_chair":false},{"display_name":"Rachel C. Glaser","person_slug":"rachel-c-glaser","is_chair":false}],"source_id":"board_seats"},"corroboration_count":1,"source_claim_count":1,"valid_from":null,"valid_to":null,"recorded_at":"2026-10-08T04:45:28.734015+00:00","sources":[{"id":"alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c","identity_scope":"representation_reference","source_type":"board_seats","title":"Audit","publisher":"board_seats","url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":null,"retrieved_at":null,"locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"source_date":null,"effective_from":null,"effective_until":null,"observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"source_reported","review_state":"none","confidence":null,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"}],"evidence":[{"id":"alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"CoStar Group, Inc. DEF 14A 2026-04-30","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30","retrieved_at":"2026-04-30T20:15:08.374+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}},{"id":"alpha:projection-evidence:document:b5d5d186f5a75fb271cdb64c8cc2ab7ada30602b6cde4b518952eca15a888ab7","identity_scope":"source_document_reference","source_type":"sec_filing","title":"CSGP DEF 14A executive officers","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":"2026-04-30T00:00:00+00:00","retrieved_at":"2026-05-15T21:44:25.107149+00:00","locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}},{"id":"alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c","identity_scope":"representation_reference","source_type":"board_seats","title":"Audit","publisher":"board_seats","url":"https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm","source_date":null,"retrieved_at":null,"locator":null,"use_rights":{"schema_version":"alpha-source-use-rights-v1","classification":"unknown","public_retrieval":"not_specified","agent_retrieval":"not_specified","redistribution":"not_granted","derived_use":"not_specified","model_training":"not_granted","retention":"not_specified","attribution_required":null,"license_id":null,"terms_url":null,"reviewed_at":null,"derivation":"fail_closed_unknown"}}],"coverage_state":"PUBLISHED","quality":{"schema_version":"alpha-record-quality-v2","overall":0.824,"status":"strong","publication_readiness":"ready","dimensions":{"identity":1,"coverage":0.5,"freshness":1,"evidence_completeness":1,"source_authority":0.866,"cross_source_agreement":0.75,"temporal_completeness":0.391},"diagnostics":{"published_claims":34,"factual_claims":34,"claims_with_linked_evidence":34,"disputed_claims":0,"conflicts":0,"stale_claims":0,"stale_claim_ids":[],"temporal_claims":23,"temporal_claims_with_valid_from":9,"missing_coverage_sections":["governance","financials","workforce","ownership","ratings"],"missing_expected_claims":["headquarters","financial_metric","governance_document","ownership","auditor","legal_matter","risk","ai_governance"]},"derivation":"deterministic_record_projection"},"publication":{"state":"PUBLISHED","published_at":"2026-10-08T04:45:28.734015+00:00","observed_at":"2026-10-08T04:45:28.734015+00:00","reviewed_at":"2026-10-08T04:45:28.734015+00:00","verified_at":"2026-10-08T04:45:28.734015+00:00"},"verification":{"schema_version":"alpha-verification-states-v1","state":"source_reported","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":34,"corroborated":0,"alpha_verified":0,"disputed":0,"superseded":0},"derivation":"claim_states+identity_ownership","summary":"Published claims are reported by public sources; none is Alpha verified. Profile ownership is unclaimed.","facets":[{"facet":"identity","state":"unclaimed"},{"facet":"evidence","state":"source_reported"},{"facet":"evaluation","state":"not_evaluated"},{"facet":"monitoring","state":null},{"facet":"authority","state":null},{"facet":"freshness","state":"current"}]},"rights":{"public_retrieval":"allowed","agent_retrieval":"allowed","redistribution":"not_granted","model_training":"not_granted","commercial_use":"not_specified","relationship_pathfinding":"not_granted","direct_contact":"not_granted"},"resource":{"uri":"alpha://company/costar-group-inc/events","section":"events","href":"https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record&section=events","media_type":"application/json","availability":"contract"},"limitations":["Absence of a leadership role, committee, or disclosure is not evidence that it does not exist.","Only explicitly published canonical company identity and current confirmed public roles are included.","Absence of a board, committee, executive, listing, or claim is not evidence that it does not exist.","Public retrieval does not grant redistribution, model-training, direct-contact, or relationship-pathfinding rights.","This Company Profile is an identity and evidence record, not an Alpha rating."]}