{"schema_version":"alpha-profile-public-v1","slug":"sandra-j-horning","canonical_url":"https://registry.alpha.ac/people/sandra-j-horning","as_of":"2026-09-21T16:58:22.190786+00:00","published_at":"2026-04-21T02:55:15.270549+00:00","last_reviewed_at":"2026-04-20T15:22:00.842+00:00","identity":{"display_name":"Sandra J. Horning","headshot_url":null,"headshot_media":null,"profile_kind":"director","role_tags":["director","board"],"current_role":{"company_name":"Gilead Sciences","company_slug":"gilead-sciences-inc","exchange":"NASDAQ","ticker":"GILD","role_category":"director","title":"Independent Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2020-01-01","valid_to":null,"is_current":true,"verification_status":"confirmed","confidence":0.85,"evidence":{"source_type":"sec_proxy","source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","effective_date":"2026-03-20","last_checked_at":"2026-03-23T07:47:26.64+00:00"}},"photo_match":null},"assurance":{"is_claimed":false,"status":"unverified","assurance_level":null,"method":null,"verified_at":null,"expires_at":null},"claiming":{"eligible":true,"label":"Is this you? Claim your Alpha Profile","claim_url":"https://terminal.alpha.ac/claim-profile?person=sandra-j-horning","suggest_edit_label":"Suggest an edit","suggest_edit_url":"https://terminal.alpha.ac/claim-profile?person=sandra-j-horning&mode=suggest","canonical_record_will_be_reused":true,"canonical_facts_owner_controlled":false},"presentation":{"schema_version":"alpha-profile-presentation-v1","state":"alpha_editorial","version":0,"published_at":null,"headline":null,"headline_evidence":null,"location":null,"photo":null,"cover":null,"about":["Sandra J. Horning served as Chief Medical Officer and Global Head of Product Development at Genentech/Roche, where she helped bring 15 new medicines to patients across cancer, multiple sclerosis, influenza and blindness. She is Professor of Medicine, Emerita at Stanford University School of Medicine following 25 years as a practicing oncologist and tenured professor. She previously served as President of the American Society of Clinical Oncology."],"links":[],"sources":[],"featured":[],"competencies":[],"board_preferences":null,"board_service":[{"organization":"Gilead Sciences","organizationId":"gilead-sciences-inc","title":"Independent Director","period":"2020-01-01 · current","evidenceLabel":"sec_proxy","evidenceState":"verified","sourceUrl":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm"}],"experience":[],"education":[],"credentials":[],"section_order":null,"hidden_sections":[],"limitations":["Presentation fields do not alter independently verified Alpha Profile facts.","Owner-supplied résumé records retain their field-level evidence state.","Only confirmed company_person_roles with public evidence. Website governed_site_fallback rows are not invented. about/links are stored people.profile_summary/bio and linkedin_url only. Dates stay undisclosed when the role has no start_date. SoFi Bank is not SoFi Technologies."]},"presentation_authority":"confirmed_company_person_roles","roles":[{"company_name":"Gilead Sciences","company_slug":"gilead-sciences-inc","exchange":"NASDAQ","ticker":"GILD","role_category":"director","title":"Independent Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2020-01-01","valid_to":null,"is_current":true,"verification_status":"confirmed","confidence":0.85,"evidence":{"source_type":"sec_proxy","source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","effective_date":"2026-03-20","last_checked_at":"2026-03-23T07:47:26.64+00:00"}}],"claims":[{"claim_type":"board_membership","claim_value":{"ticker":"GILD","role_type":"Director","organization":"Gilead Sciences, Inc."},"claim_text":"Serves on the board of Gilead Sciences, Inc. as Director.","claim_state":"verified","valid_from":"2020-01-01","valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:45.254839+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Gilead Sciences, Inc. director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","published_at":"2026-03-20T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:46.026152+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"committee_assignments","claim_value":{"committees":["Nominating/Governance"]},"claim_text":"Committee assignments at Gilead Sciences, Inc.: Nominating/Governance.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:45.254839+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Gilead Sciences, Inc. director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","published_at":"2026-03-20T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:46.026152+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"director_since","claim_value":{"start_date":null,"director_since":2020},"claim_text":"Director tenure at Gilead Sciences, Inc. begins from 2020.","claim_state":"verified","valid_from":"2020-01-01","valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:45.254839+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Gilead Sciences, Inc. director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","published_at":"2026-03-20T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:46.026152+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"independence_status","claim_value":{"is_independent":true},"claim_text":"Board independence status at Gilead Sciences, Inc.: True.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:45.254839+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Gilead Sciences, Inc. director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","published_at":"2026-03-20T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:46.026152+00:00","relation":"supports","excerpt_locator":null}]},{"subject":"alpha:person:sandra-j-horning","claim_type":"board_service","claim_value":{"tags":[],"title":"Independent Director","period":"2020-01-01 · current","organization":"Gilead Sciences","organization_id":"gilead-sciences-inc"},"claim_text":"Independent Director at Gilead Sciences (2020-01-01 · current)","valid_from":null,"valid_to":null,"verification_status":"confirmed","date_precision":"period_text_only","evidence":[{"source_url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","label":"sec_proxy","evidence_state":"verified"}],"claim_state":"confirmed","version":1}],"network":{"schema_version":"alpha-profile-network-public-v1","relationships":[],"relationship_pathfinding":false,"authentication_prompt":"Sign in to see how you're connected.","limitations":["Representative factual associations only.","Shared contexts do not assert personal acquaintance.","Anonymous graph traversal is not available."]},"permissions":{"classification":"open_public_projection","public_retrieval":true,"agent_retrieval":true,"redistribution":false,"model_training":false,"relationship_pathfinding":false,"direct_contact":false},"limitations":["Only permissioned public claims and evidence are included.","Absence of a claim is not evidence that the underlying fact is false.","Public retrieval does not grant model-training or redistribution rights.","Private relationships and Council activity are excluded."],"structured_data":{"@context":"https://schema.org","@type":"ProfilePage","@id":"https://registry.alpha.ac/people/sandra-j-horning#profile","url":"https://registry.alpha.ac/people/sandra-j-horning","dateModified":"2026-04-20T15:22:00.842+00:00","mainEntity":{"@type":"Person","@id":"https://registry.alpha.ac/people/sandra-j-horning#person","name":"Sandra J. Horning","url":"https://registry.alpha.ac/people/sandra-j-horning","jobTitle":"Independent Director","worksFor":{"@type":"Organization","name":"Gilead Sciences","tickerSymbol":"NASDAQ: GILD"},"affiliation":[{"@type":"OrganizationRole","roleName":"Independent Director","startDate":"2020-01-01","memberOf":{"@type":"Organization","name":"Gilead Sciences","url":"https://registry.alpha.ac/companies/gilead-sciences-inc","tickerSymbol":"NASDAQ: GILD"}}]},"isBasedOn":[{"@type":"CreativeWork","url":"https://www.sec.gov/Archives/edgar/data/882095/000130817926000106/gild014721-def14a.htm","name":"Gilead Sciences, Inc. director board source"}],"mainEntityOfPage":"https://registry.alpha.ac/people/sandra-j-horning"},"trust":{"schema_version":"alpha-profile-trust-v1","verification":{"schema_version":"alpha-verification-states-v1","state":"corroborated","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":3,"corroborated":1,"alpha_verified":0,"disputed":0,"superseded":0},"derivation":"claim_states+identity_ownership","summary":"At least one published claim is corroborated by two or more public sources. Profile ownership is unclaimed."},"aggregation":{"schema_version":"alpha-claim-aggregation-v1","published_claim_count":4,"under_review_claim_count":0,"owner_supplied_claim_count":0,"evidence_record_count":3,"distinct_source_count":1,"conflicts":[],"conflict_count":0,"headline_conflict_count":0,"internal_review_conflict_count":0,"contradiction_types":[],"headline_conflict_types":[],"verification":{"schema_version":"alpha-verification-states-v1","state":"corroborated","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":3,"corroborated":1,"alpha_verified":0,"disputed":0,"superseded":0},"derivation":"claim_states+identity_ownership","summary":"At least one published claim is corroborated by two or more public sources. Profile ownership is unclaimed."},"coverage":{"schema_version":"alpha-coverage-metric-v1","published_claims":4,"corroborated_claims":1,"sources":3,"distinct_sources":1,"role_claims":1,"last_reviewed_at":"2026-04-20T15:22:00.842+00:00","observed_at":"2026-09-21T16:58:22.190786+00:00","freshness_days":154}},"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"}},"projection":{"schema_version":"alpha-profile-projection-v5","entity":{"kind":"person","slug":"sandra-j-horning","canonical_url":"https://registry.alpha.ac/people/sandra-j-horning"},"publication":{"published_at":"2026-04-21T02:55:15.270549+00:00","last_reviewed_at":"2026-04-20T15:22:00.842+00:00","as_of":"2026-09-21T16:58:22.190786+00:00"},"representations":{"html":{"href":"https://registry.alpha.ac/people/sandra-j-horning","media_type":"text/html"},"json":{"href":"https://registry.alpha.ac/api/public/profiles/sandra-j-horning","media_type":"application/json"},"markdown":{"href":"https://registry.alpha.ac/people/sandra-j-horning.md","media_type":"text/markdown"},"structured_data":{"embedded":true,"media_type":"application/ld+json"},"share_image":null},"permissions":{"public_retrieval":true,"agent_retrieval":true,"redistribution":false,"model_training":false,"relationship_pathfinding":false,"direct_contact":false}}}