# CoStar Group > Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero. ## Record | Field | Value | | --- | --- | | Representation | alpha-profile-markdown-v4 | | Protocol | Alpha Governance Facts Protocol 0.1 | | Schema | alpha.governance.entity.public.v1 | | Record version | public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce | | Governance record representation | alpha-governance-record-v2 | | Canonical entity | alpha:company:e67179da-7881-493b-bfa6-082017606635 | | Entity type | Company | | Canonical URL | https://registry.alpha.ac/companies/costar-group-inc | | Publication | PUBLISHED | | Verification | source_reported | | Verification schema | alpha-verification-states-v1 | | Ownership | unclaimed | | Published claims | 34 | | Claims under review | 1 | | Evidence records | 6 | | Conflicts | 0 | | Conflicts in internal review | 0 | | Observed | 2026-10-08T04:45:28.734015+00:00 | | Last reviewed | 2026-10-08T04:45:28.734015+00:00 | ## Identity - Legal name: COSTAR GROUP, INC. - Display name: CoStar Group ## Alpha Governance Record | Field | Value | | --- | --- | | Governance Record schema | alpha-governance-record-v2 | | Ontology | alpha-governance-ontology-v1 | | Record version | public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce | | As of | 2026-10-09T02:44:52.725162+00:00 | | Completeness | 0.455 | | Record Quality | 0.824 | | Directors | 7 | | Committees | 8 | | Governance events | 19 | | Entity class | public_company | ## Section coverage | Section | State | | --- | --- | | identity | PUBLISHED | | corporate_structure | NOT_REVIEWED | | board | PUBLISHED | | committees | PUBLISHED | | leadership | PUBLISHED | | ownership | NOT_REVIEWED | | financials | NOT_REVIEWED | | capital_structure | PUBLISHED | | compensation | NOT_REVIEWED | | governance | NOT_REVIEWED | | shareholder_governance | NOT_REVIEWED | | audit | NOT_REVIEWED | | legal | NOT_REVIEWED | | risk | NOT_REVIEWED | | cyber | NOT_REVIEWED | | ai_governance | NOT_REVIEWED | | agent_governance | RESTRICTED | | markets_external | PUBLISHED | | events | PUBLISHED | | relationships | PUBLISHED | | assessments | PUBLISHED | | evidence | PUBLISHED | ## Board - Angelique G. Brunner: Director. Status: current. Independent: true. Since: 2023-01-01. Committees: Audit (member); Audit; Compensation (member); Compensation (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9 - Christine M. McCarthy: Director. Status: current. Independent: true. Since: 2025-01-01. Committees: Nominating and Corporate Governance (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:10 - John L. Berisford: Director. Status: current. Independent: true. Since: 2025-01-01. Committees: Compensation (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:11 - John W. Hill: Director. Status: current. Independent: true. Since: 2012-01-01. Committees: Audit (chair); Audit · Chair (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12 - Louise S. Sams: Director. Status: current. Independent: true. Since: 2019-01-01. Committees: Audit (member); Nominating and Corporate Governance (chair); Nominating and Corporate Governance · Chair; Audit (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13 - Rachel C. Glaser: Director. Status: current. Independent: true. Since: 2025-01-01. Committees: Audit (member); Audit; Nominating and Corporate Governance (member); Nominating and Corporate Governance (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14 - Robert W. Musslewhite: Director. Status: current. Independent: true. Since: 2019-01-01. Committees: Compensation (chair); Compensation · Chair (member). claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15 ## Committees - Audit (audit). Chair: John W. Hill. Members: John W. Hill (chair, current); Angelique G. Brunner (member, current); Louise S. Sams (member, current); Rachel C. Glaser (member, current). committee_id=alpha:committee:costar-group-inc:audit - Audit · Chair (audit). Chair: NOT_PUBLISHED. Members: John W. Hill (member, current). committee_id=alpha:committee:costar-group-inc:audit-chair - Audit; Compensation (audit). Chair: NOT_PUBLISHED. Members: Angelique G. Brunner (member, current). committee_id=alpha:committee:costar-group-inc:audit-compensation - Audit; Nominating and Corporate Governance (audit). Chair: NOT_PUBLISHED. Members: Rachel C. Glaser (member, current). committee_id=alpha:committee:costar-group-inc:audit-nominating-and-corporate-governance - Compensation (compensation). Chair: Robert W. Musslewhite. Members: Robert W. Musslewhite (chair, current); Angelique G. Brunner (member, current); John L. Berisford (member, current). committee_id=alpha:committee:costar-group-inc:compensation - Compensation · Chair (compensation). Chair: NOT_PUBLISHED. Members: Robert W. Musslewhite (member, current). committee_id=alpha:committee:costar-group-inc:compensation-chair - Nominating and Corporate Governance (nominating_governance). Chair: Louise S. Sams. Members: Louise S. Sams (chair, current); Christine M. McCarthy (member, current); Rachel C. Glaser (member, current). committee_id=alpha:committee:costar-group-inc:nominating-and-corporate-governance - Nominating and Corporate Governance · Chair; Audit (audit). Chair: NOT_PUBLISHED. Members: Louise S. Sams (member, current). committee_id=alpha:committee:costar-group-inc:nominating-and-corporate-governance-chair-audit ## Executive leadership - Gene Boxer: General Counsel and Corporate Secretary [GC]. Status: current. claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:20 - Andrew C. Florance: Founder and Chief Executive Officer [CEO]. Status: unknown. claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:16 - Christian M. Lown: Chief Financial Officer [CFO]. Status: unknown. claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:17 - Frank A. Simuro: Chief Technology Officer [CTO]. Status: unknown. claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:18 - Frederick G. Saint: President, Marketplaces [PRESIDENT]. Status: unknown. claim_id=alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:19 ## Governance events - GC_CHANGED: Gene Boxer executive of CoStar Group, effective 2026-04-30. Effective: 2026-04-30. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:bmtlxz152sr77 - DIRECTOR_APPOINTED: Christine M. McCarthy seat on CoStar Group, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:dp1hmhifje09 - DIRECTOR_APPOINTED: John L. Berisford seat on CoStar Group, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:ibzyei97f4do - DIRECTOR_APPOINTED: Rachel C. Glaser seat on CoStar Group, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:okbae53zt2x1 - COMMITTEE_CREATED: Audit; Nominating and Corporate Governance committee of CoStar Group, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:r3s2kt103bjf1 - COMMITTEE_MEMBER_ADDED: Rachel C. Glaser member of Audit; Nominating and Corporate Governance, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1xbqpwmqsly5w - COMMITTEE_MEMBER_ADDED: Christine M. McCarthy member of Nominating and Corporate Governance, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:xx7e6d2vp4s - DIRECTOR_APPOINTED: Angelique G. Brunner seat on CoStar Group, effective 2023-01-01. Effective: 2023-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1qb472jbc1wxj - COMMITTEE_CREATED: Audit; Compensation committee of CoStar Group, effective 2023-01-01. Effective: 2023-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1ruufj7v3ffpr - COMMITTEE_MEMBER_ADDED: Angelique G. Brunner member of Audit; Compensation, effective 2023-01-01. Effective: 2023-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1fk310x11auua7 - DIRECTOR_APPOINTED: Louise S. Sams seat on CoStar Group, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1fnktfn1htenhl - DIRECTOR_APPOINTED: Robert W. Musslewhite seat on CoStar Group, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:5vn79n16gl28j - COMMITTEE_CREATED: Compensation · Chair committee of CoStar Group, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:38m2rdcq7nzz - COMMITTEE_MEMBER_ADDED: Robert W. Musslewhite member of Compensation · Chair, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:c5ybwr18kpm0r - COMMITTEE_CREATED: Nominating and Corporate Governance · Chair; Audit committee of CoStar Group, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:whinchna7v31 - COMMITTEE_MEMBER_ADDED: Louise S. Sams member of Nominating and Corporate Governance · Chair; Audit, effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:18ptqk41ogcpe4 - DIRECTOR_APPOINTED: John W. Hill seat on CoStar Group, effective 2012-01-01. Effective: 2012-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:wytaizj69rfz - COMMITTEE_CREATED: Audit · Chair committee of CoStar Group, effective 2012-01-01. Effective: 2012-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:1yutsmdravlfn - COMMITTEE_MEMBER_ADDED: John W. Hill member of Audit · Chair, effective 2012-01-01. Effective: 2012-01-01. Detected: 2026-10-08T04:45:28.734015+00:00. event_id=alpha:event:transition:ktr4gw1y5z7be ## Scoped resources - `alpha://company/costar-group-inc` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record - `alpha://company/costar-group-inc/identity` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=identity - `alpha://company/costar-group-inc/corporate-structure` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=corporate-structure - `alpha://company/costar-group-inc/board` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=board - `alpha://company/costar-group-inc/committees` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=committees - `alpha://company/costar-group-inc/leadership` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=leadership - `alpha://company/costar-group-inc/ownership` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=ownership - `alpha://company/costar-group-inc/financials` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=financials - `alpha://company/costar-group-inc/capital-structure` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=capital-structure - `alpha://company/costar-group-inc/compensation` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=compensation - `alpha://company/costar-group-inc/governance` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=governance - `alpha://company/costar-group-inc/shareholder-governance` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=shareholder-governance - `alpha://company/costar-group-inc/audit` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=audit - `alpha://company/costar-group-inc/legal` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=legal - `alpha://company/costar-group-inc/risk` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=risk - `alpha://company/costar-group-inc/cyber` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=cyber - `alpha://company/costar-group-inc/ai-governance` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=ai-governance - `alpha://company/costar-group-inc/agents` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=agents - `alpha://company/costar-group-inc/ecosystem` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=ecosystem - `alpha://company/costar-group-inc/events` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=events - `alpha://company/costar-group-inc/relationships` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=relationships - `alpha://company/costar-group-inc/assessments` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=assessments - `alpha://company/costar-group-inc/evidence` (contract): https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record§ion=evidence ## Role modules - NOT_ASSERTED ## Attention - NO_RECORDS_FOUND ## Committee data - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:22: `{"kind":"committee_appointment","original_name":"Audit","category":"audit","role":"chair","person":{"alpha_id":"alpha:person:john-w-hill","name":"John W. Hill"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:23: `{"kind":"committee_appointment","original_name":"Audit","category":"audit","role":"member","person":{"alpha_id":"alpha:person:angelique-g-brunner","name":"Angelique G. Brunner"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:24: `{"kind":"committee_appointment","original_name":"Audit","category":"audit","role":"member","person":{"alpha_id":"alpha:person:louise-s-sams","name":"Louise S. Sams"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:25: `{"kind":"committee_appointment","original_name":"Audit","category":"audit","role":"member","person":{"alpha_id":"alpha:person:rachel-c-glaser","name":"Rachel C. Glaser"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:27: `{"kind":"committee_appointment","original_name":"Compensation","category":"compensation","role":"chair","person":{"alpha_id":"alpha:person:robert-w-musslewhite","name":"Robert W. Musslewhite"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:28: `{"kind":"committee_appointment","original_name":"Compensation","category":"compensation","role":"member","person":{"alpha_id":"alpha:person:angelique-g-brunner","name":"Angelique G. Brunner"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:29: `{"kind":"committee_appointment","original_name":"Compensation","category":"compensation","role":"member","person":{"alpha_id":"alpha:person:john-l-berisford","name":"John L. Berisford"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:31: `{"kind":"committee_appointment","original_name":"Nominating and Corporate Governance","category":"nominating_governance","role":"chair","person":{"alpha_id":"alpha:person:louise-s-sams","name":"Louise S. Sams"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:32: `{"kind":"committee_appointment","original_name":"Nominating and Corporate Governance","category":"nominating_governance","role":"member","person":{"alpha_id":"alpha:person:christine-m-mccarthy","name":"Christine M. McCarthy"},"source_id":"board_seats"}` - Claim alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:33: `{"kind":"committee_appointment","original_name":"Nominating and Corporate Governance","category":"nominating_governance","role":"member","person":{"alpha_id":"alpha:person:rachel-c-glaser","name":"Rachel C. Glaser"},"source_id":"board_seats"}` ## Leadership - Angelique G. Brunner: Director, Audit; Compensation. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:9. Valid from: 2023-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Christine M. McCarthy: Director, Nominating and Corporate Governance. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:10. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - John L. Berisford: Director, Compensation. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:11. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - John W. Hill: Director, Audit · Chair. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:12. Valid from: 2012-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Louise S. Sams: Director, Nominating and Corporate Governance · Chair; Audit. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:13. Valid from: 2019-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Rachel C. Glaser: Director, Audit; Nominating and Corporate Governance. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:14. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Robert W. Musslewhite: Director, Compensation · Chair. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:15. Valid from: 2019-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Andrew C. Florance: Founder and Chief Executive Officer. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:16. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Christian M. Lown: Chief Financial Officer. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:17. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Frank A. Simuro: Chief Technology Officer. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:18. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Frederick G. Saint: President, Marketplaces. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:19. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e. - Gene Boxer: General Counsel and Corporate Secretary. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:leadership_role:20. Valid from: 2026-04-30. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b5d5d186f5a75fb271cdb64c8cc2ab7ada30602b6cde4b518952eca15a888ab7. ## Roles - PUBLISHED ## Governance - NOT_ASSERTED ## Board committees - Audit: Chair John W. Hill; Members John W. Hill (Chair); Angelique G. Brunner; Louise S. Sams; Rachel C. Glaser. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_record:21. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Compensation: Chair Robert W. Musslewhite; Members Robert W. Musslewhite (Chair); Angelique G. Brunner; John L. Berisford. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_record:26. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Nominating and Corporate Governance: Chair Louise S. Sams; Members Louise S. Sams (Chair); Christine M. McCarthy; Rachel C. Glaser. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_record:30. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. ## Financials - NOT_ASSERTED ## Workforce - NOT_ASSERTED ## Market and index context - S&P 500 (SPX). Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:index_membership:34. Valid from: 2022-09-19. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:827a22a1567eda11fa866650563f33918ee2975144378fa7fd6f46399da5427a. ## Legal Name - COSTAR GROUP, INC.. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:legal_name:1. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. ## Entity Status - Public listing published. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:entity_status:3. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. ## Official Website - https://www.costargroup.com. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:official_website:4. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:be449a87994fddef8fd034981e5e98b68c9f57680d830bde13a98d37e91c56f5. ## Published Fact - US. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:published_fact:5. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. - DE. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:published_fact:6. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. - Real Estate. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:published_fact:7. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. - https://www.costargroup.com. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:published_fact:8. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:be449a87994fddef8fd034981e5e98b68c9f57680d830bde13a98d37e91c56f5. ## Committee Appointment - John W. Hill: chair, Audit. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:22. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Angelique G. Brunner: member, Audit. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:23. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Louise S. Sams: member, Audit. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:24. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Rachel C. Glaser: member, Audit. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:25. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Robert W. Musslewhite: chair, Compensation. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:27. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Angelique G. Brunner: member, Compensation. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:28. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - John L. Berisford: member, Compensation. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:29. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Louise S. Sams: chair, Nominating and Corporate Governance. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:31. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Christine M. McCarthy: member, Nominating and Corporate Governance. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:32. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. - Rachel C. Glaser: member, Nominating and Corporate Governance. Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:committee_appointment:33. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c. ## Security Listing - CSGP (NASDAQ). Claim: alpha:claim:company:e67179da-7881-493b-bfa6-082017606635:security_listing:35. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619. ## Coverage states | Field | Value | | --- | --- | | Identity | PUBLISHED | | Business | PUBLISHED | | Leadership | PUBLISHED | | Board and committees | PUBLISHED | | Governance | NOT_ASSERTED | | Financials | NOT_ASSERTED | | Workforce | NOT_ASSERTED | | Ownership | NOT_ASSERTED | | Ratings | NOT_PUBLISHED | | Market and index context | PUBLISHED | ## Public sources - alpha:projection-evidence:ae0249bd871ed5fea3a43d58b7bf94d229a12219bd04e5358849bda83f25c619: [Alpha canonical company public projection](https://www.alpha.ac/api/public/companies/costar-group-inc). - alpha:projection-evidence:be449a87994fddef8fd034981e5e98b68c9f57680d830bde13a98d37e91c56f5: [COSTAR GROUP, INC. Form 10-K (filed 2026-02-26)](https://www.sec.gov/Archives/edgar/data/1057352/000105735226000020/csgp-20251231.htm). - alpha:projection-evidence:document:8a1475e15000c245c23d9d93ec5a8cb0290beb3e3fc3becedced2fba1bf3644e: [CoStar Group, Inc. DEF 14A 2026-04-30](https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm). - alpha:projection-evidence:document:b5d5d186f5a75fb271cdb64c8cc2ab7ada30602b6cde4b518952eca15a888ab7: [CSGP DEF 14A executive officers](https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm). - alpha:projection-evidence:9fe54bde31dce45f5315619bd504b916fc5d8e6f986289214bb7b30b72b8203c: [Audit](https://www.sec.gov/Archives/edgar/data/1057352/000119312526197205/d903159ddef14a.htm). - alpha:projection-evidence:827a22a1567eda11fa866650563f33918ee2975144378fa7fd6f46399da5427a: [S&P 500](https://www.slickcharts.com/sp500). ## Rights | Field | Value | | --- | --- | | 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 | ## 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. ## Alternate representations - [Canonical profile](https://registry.alpha.ac/companies/costar-group-inc) - [Public Markdown](https://registry.alpha.ac/companies/costar-group-inc.md) - [Public JSON](https://registry.alpha.ac/api/public/companies/costar-group-inc?format=record) - [JSON-LD](https://registry.alpha.ac/api/public/companies/costar-group-inc?format=jsonld) - MCP resource: `alpha://companies/costar-group-inc` at https://mcp.alpha.ac/mcp ## Connected governance records Only explicitly published, rights-cleared records. Missing records do not establish absence, safety, or complete coverage. ## Critical-risk oversight Snapshot as of 2026-10-09T02:44:52.735093+00:00; recorded 2026-10-09T02:44:52.735093+00:00. Every published assignment for this snapshot is listed. Only explicitly reviewed, rights-cleared assignments in effect on the as-of date, in the company's own wording. An assignment shows where oversight is placed, not whether it is effective. Missing records do not establish absence.