{"schema_version":"alpha-profile-public-v1","slug":"margaret-a-liu-m-d","canonical_url":"https://registry.alpha.ac/people/margaret-a-liu-m-d","as_of":"2026-09-21T22:37:56.175257+00:00","published_at":"2026-09-02T02:37:24.681383+00:00","last_reviewed_at":"2026-05-16T01:07:51.169+00:00","identity":{"display_name":"Margaret A. Liu, M.D.","headshot_url":null,"headshot_media":null,"profile_kind":"director","role_tags":["director","executive"],"current_role":{"company_name":"MACROGENICS INC","company_slug":"macrogenics-inc","exchange":"NASDAQ","ticker":"MGNX","role_category":"director","title":"Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2023-01-01","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/1125345/000112534526000021/mgnx-20260407.htm","effective_date":"2026-04-08","last_checked_at":"2026-04-24T23:48:01.158+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=margaret-a-liu-m-d","suggest_edit_label":"Suggest an edit","suggest_edit_url":"https://terminal.alpha.ac/claim-profile?person=margaret-a-liu-m-d&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":["Dr. Liu has served as CEO of PAX Therapeutics since 2020 and is an Adjunct Full Professor at UCSF. She has over 30 years of biotechnology and pharmaceutical experience, including positions at Merck and Chiron Corporation. She is a board member of the International Society for Vaccines and serves on the boards of Ipsen and other companies."],"links":[],"sources":[],"featured":[],"competencies":[],"board_preferences":null,"board_service":[{"organization":"MACROGENICS INC","organizationId":"macrogenics-inc","title":"Director","period":"2023-01-01 · current","evidenceLabel":"sec_proxy","evidenceState":"verified","sourceUrl":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.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":"MACROGENICS INC","company_slug":"macrogenics-inc","exchange":"NASDAQ","ticker":"MGNX","role_category":"director","title":"Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2023-01-01","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/1125345/000112534526000021/mgnx-20260407.htm","effective_date":"2026-04-08","last_checked_at":"2026-04-24T23:48:01.158+00:00"}}],"claims":[{"claim_type":"ai_ml_experience","claim_value":false,"claim_text":"Proxy extraction classified AI/ML experience for Margaret A. Liu, M.D. as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.321446+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"board_role","claim_value":"Director","claim_text":"Margaret A. Liu, M.D. currently serves as Director at MACROGENICS INC.","claim_state":"verified","valid_from":"2026-04-08","valid_to":null,"confidence":0.92,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.287231+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"committee_assignments","claim_value":[],"claim_text":"Margaret A. Liu, M.D. serves on no disclosed committees.","claim_state":"verified","valid_from":"2026-04-08","valid_to":null,"confidence":0.88,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.303605+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"current_executive_company","claim_value":"PAX Therapeutics","claim_text":"Margaret A. Liu, M.D. is linked to PAX Therapeutics as an operating executive.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.85,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.420452+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"current_executive_role","claim_value":"Chief Executive Officer","claim_text":"Margaret A. Liu, M.D. is also listed as Chief Executive Officer.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.85,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.403132+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"cybersecurity_experience","claim_value":false,"claim_text":"Proxy extraction classified cybersecurity experience for Margaret A. Liu, M.D. as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.354382+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"technology_background","claim_value":false,"claim_text":"Proxy extraction classified technology background for Margaret A. Liu, M.D. as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-16T01:07:51.337895+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"MGNX DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","published_at":"2026-04-08T00:00:00+00:00","last_checked_at":"2026-05-16T01:07:51.222711+00:00","relation":"supports","excerpt_locator":null}]},{"subject":"alpha:person:margaret-a-liu-m-d","claim_type":"board_service","claim_value":{"tags":[],"title":"Director","period":"2023-01-01 · current","organization":"MACROGENICS INC","organization_id":"macrogenics-inc"},"claim_text":"Director at MACROGENICS INC (2023-01-01 · 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/1125345/000112534526000021/mgnx-20260407.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/margaret-a-liu-m-d#profile","url":"https://registry.alpha.ac/people/margaret-a-liu-m-d","dateModified":"2026-05-16T01:07:51.169+00:00","mainEntity":{"@type":"Person","@id":"https://registry.alpha.ac/people/margaret-a-liu-m-d#person","name":"Margaret A. Liu, M.D.","url":"https://registry.alpha.ac/people/margaret-a-liu-m-d","jobTitle":"Director","worksFor":{"@type":"Organization","name":"MACROGENICS INC","tickerSymbol":"NASDAQ: MGNX"},"affiliation":[{"@type":"OrganizationRole","roleName":"Director","startDate":"2023-01-01","memberOf":{"@type":"Organization","name":"MACROGENICS INC","url":"https://registry.alpha.ac/companies/macrogenics-inc","tickerSymbol":"NASDAQ: MGNX"}}]},"isBasedOn":[{"@type":"CreativeWork","url":"https://www.sec.gov/Archives/edgar/data/1125345/000112534526000021/mgnx-20260407.htm","name":"MGNX DEF 14A director slate"}],"mainEntityOfPage":"https://registry.alpha.ac/people/margaret-a-liu-m-d"},"trust":{"schema_version":"alpha-profile-trust-v1","verification":{"schema_version":"alpha-verification-states-v1","state":"source_reported","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":9,"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."},"aggregation":{"schema_version":"alpha-claim-aggregation-v1","published_claim_count":9,"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":"source_reported","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":9,"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."},"coverage":{"schema_version":"alpha-coverage-metric-v1","published_claims":9,"corroborated_claims":0,"sources":3,"distinct_sources":1,"role_claims":1,"last_reviewed_at":"2026-05-16T01:07:51.169+00:00","observed_at":"2026-09-21T22:37:56.175257+00:00","freshness_days":129}},"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":"margaret-a-liu-m-d","canonical_url":"https://registry.alpha.ac/people/margaret-a-liu-m-d"},"publication":{"published_at":"2026-09-02T02:37:24.681383+00:00","last_reviewed_at":"2026-05-16T01:07:51.169+00:00","as_of":"2026-09-21T22:37:56.175257+00:00"},"representations":{"html":{"href":"https://registry.alpha.ac/people/margaret-a-liu-m-d","media_type":"text/html"},"json":{"href":"https://registry.alpha.ac/api/public/profiles/margaret-a-liu-m-d","media_type":"application/json"},"markdown":{"href":"https://registry.alpha.ac/people/margaret-a-liu-m-d.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}}}