{"schema_version":"alpha-profile-public-v1","slug":"william-r-klesse","canonical_url":"https://registry.alpha.ac/people/william-r-klesse","as_of":"2026-09-21T17:13:18.156129+00:00","published_at":"2026-04-21T02:55:15.270549+00:00","last_reviewed_at":"2026-05-16T06:37:35.741+00:00","identity":{"display_name":"William R. Klesse","headshot_url":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","headshot_media":{"asset_id":"alpha-profile-portrait:william-r-klesse:v1","canonical_url":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","alt_text":"Portrait of William R. Klesse","caption":"William R. Klesse profile portrait","source_name":"Alpha governed canonical profile record","source_url":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","rights":null,"authenticity_class":null,"published_at":"2026-04-21T02:55:15.270549+00:00","current_version":1},"profile_kind":"director","role_tags":["director","board","executive"],"current_role":{"company_name":"Occidental Petroleum","company_slug":"occidental-petroleum","exchange":"NYSE","ticker":"OXY-WT","role_category":"director","title":"Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2013-01-01","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/797468/000162828026019816/oxy-20260319.htm","effective_date":"2026-03-19","last_checked_at":"2026-03-23T07:49:00.376+00:00"}},"photo_match":"person_record"},"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=william-r-klesse","suggest_edit_label":"Suggest an edit","suggest_edit_url":"https://terminal.alpha.ac/claim-profile?person=william-r-klesse&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":["Mr. Klesse is the former CEO and Chairman of the Board of Valero Energy Corporation, serving as CEO from 2006 to May 2014 and as Chairman from 2007 until his retirement in December 2014. He began his 45-plus year career in the energy industry at Diamond Shamrock Corporation and held various executive roles at Ultramar Diamond Shamrock before joining Valero. He holds a bachelor's degree in Chemical Engineering from the University of Dayton and an MBA with an emphasis in Finance from West Texas A&M University."],"links":[],"sources":[],"featured":[],"competencies":[],"board_preferences":null,"board_service":[{"organization":"Occidental Petroleum","organizationId":"occidental-petroleum","title":"Director","period":"2013-01-01 · current","evidenceLabel":"sec_proxy","evidenceState":"verified","sourceUrl":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.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":"Occidental Petroleum","company_slug":"occidental-petroleum","exchange":"NYSE","ticker":"OXY-WT","role_category":"director","title":"Director","committee":null,"is_board_chair":false,"is_independent":true,"valid_from":"2013-01-01","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/797468/000162828026019816/oxy-20260319.htm","effective_date":"2026-03-19","last_checked_at":"2026-03-23T07:49:00.376+00:00"}}],"claims":[{"claim_type":"ai_ml_experience","claim_value":false,"claim_text":"Proxy extraction classified AI/ML experience for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:25:06.775515+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:25:06.67639+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"ai_ml_experience","claim_value":false,"claim_text":"Executive extraction classified AI/ML experience for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:24:38.13099+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A executive officers","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:24:37.980791+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"board_membership","claim_value":{"ticker":"OXY","role_type":"Director","organization":"Occidental Petroleum Corporation"},"claim_text":"Serves on the board of Occidental Petroleum Corporation as Director.","claim_state":"verified","valid_from":"2013-01-01","valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:40.205705+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Occidental Petroleum Corporation director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:44.05354+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"board_role","claim_value":"Director","claim_text":"William R. Klesse currently serves as Director at Occidental Petroleum Corporation.","claim_state":"verified","valid_from":"2026-03-19","valid_to":null,"confidence":0.92,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:25:06.739139+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:25:06.67639+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"committee_assignments","claim_value":["Environmental, Health and Safety","Compensation"],"claim_text":"William R. Klesse serves on Environmental, Health and Safety, Compensation.","claim_state":"verified","valid_from":"2026-03-19","valid_to":null,"confidence":0.88,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:25:06.757727+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:25:06.67639+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"committee_assignments","claim_value":{"committees":["Compensation"]},"claim_text":"Committee assignments at Occidental Petroleum Corporation: Compensation.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:40.205705+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Occidental Petroleum Corporation director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:44.05354+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"cybersecurity_experience","claim_value":false,"claim_text":"Executive extraction classified cybersecurity experience for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:24:38.162579+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A executive officers","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:24:37.980791+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"cybersecurity_experience","claim_value":false,"claim_text":"Proxy extraction classified cybersecurity experience for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:25:06.805778+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:25:06.67639+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"director_since","claim_value":{"start_date":null,"director_since":2013},"claim_text":"Director tenure at Occidental Petroleum Corporation begins from 2013.","claim_state":"verified","valid_from":"2013-01-01","valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:40.205705+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Occidental Petroleum Corporation director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:44.05354+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"executive_company","claim_value":"Occidental Petroleum Corporation","claim_text":"William R. Klesse is associated with Occidental Petroleum Corporation.","claim_state":"verified","valid_from":"2026-03-19","valid_to":null,"confidence":0.94,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:24:38.113122+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A executive officers","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:24:37.980791+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"executive_title","claim_value":"Director","claim_text":"William R. Klesse is listed as Director at Occidental Petroleum Corporation.","claim_state":"verified","valid_from":"2026-03-19","valid_to":null,"confidence":0.94,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:24:38.094207+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A executive officers","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:24:37.980791+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"independence_status","claim_value":{"is_independent":true},"claim_text":"Board independence status at Occidental Petroleum Corporation: True.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.95,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-03T01:56:40.205705+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"Occidental Petroleum Corporation director board source","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-03T01:47:44.05354+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"technology_background","claim_value":false,"claim_text":"Executive extraction classified technology background for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:24:38.146253+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A executive officers","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:24:37.980791+00:00","relation":"supports","excerpt_locator":null}]},{"claim_type":"technology_background","claim_value":false,"claim_text":"Proxy extraction classified technology background for William R. Klesse as false.","claim_state":"verified","valid_from":null,"valid_to":null,"confidence":0.72,"source_tier":3,"verification_status":"confirmed","last_reviewed_at":"2026-05-13T06:25:06.790461+00:00","version":1,"evidence":[{"source_name":"SEC EDGAR","document_title":"OXY DEF 14A director slate","source_type":"sec_filing","source_tier":3,"source_url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","published_at":"2026-03-19T00:00:00+00:00","last_checked_at":"2026-05-13T06:25:06.67639+00:00","relation":"supports","excerpt_locator":null}]},{"subject":"alpha:person:william-r-klesse","claim_type":"board_service","claim_value":{"tags":[],"title":"Director","period":"2013-01-01 · current","organization":"Occidental Petroleum","organization_id":"occidental-petroleum"},"claim_text":"Director at Occidental Petroleum (2013-01-01 · 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/797468/000162828026019816/oxy-20260319.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/william-r-klesse#profile","url":"https://registry.alpha.ac/people/william-r-klesse","dateModified":"2026-05-16T06:37:35.741+00:00","primaryImageOfPage":{"@type":"ImageObject","@id":"https://registry.alpha.ac/people/william-r-klesse#portrait","identifier":"alpha-profile-portrait:william-r-klesse:v1","contentUrl":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","url":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","caption":"William R. Klesse profile portrait","creditText":"Alpha governed canonical profile record","datePublished":"2026-04-21T02:55:15.270549+00:00","representativeOfPage":true},"mainEntity":{"@type":"Person","@id":"https://registry.alpha.ac/people/william-r-klesse#person","name":"William R. Klesse","image":{"@type":"ImageObject","@id":"https://registry.alpha.ac/people/william-r-klesse#portrait","identifier":"alpha-profile-portrait:william-r-klesse:v1","contentUrl":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","url":"https://qzvwmfoixeflcbvpqboy.supabase.co/storage/v1/object/public/director-photos/directors/f692282b-0fb9-40c5-875a-e723b1399f1a.jpg","caption":"William R. Klesse profile portrait","creditText":"Alpha governed canonical profile record","datePublished":"2026-04-21T02:55:15.270549+00:00","representativeOfPage":true},"url":"https://registry.alpha.ac/people/william-r-klesse","jobTitle":"Director","worksFor":{"@type":"Organization","name":"Occidental Petroleum","tickerSymbol":"NYSE: OXY-WT"},"affiliation":[{"@type":"OrganizationRole","roleName":"Director","startDate":"2013-01-01","memberOf":{"@type":"Organization","name":"Occidental Petroleum","url":"https://registry.alpha.ac/companies/occidental-petroleum","tickerSymbol":"NYSE: OXY-WT"}}]},"isBasedOn":[{"@type":"CreativeWork","url":"https://www.sec.gov/Archives/edgar/data/797468/000162828026019816/oxy-20260319.htm","name":"OXY DEF 14A director slate"}],"mainEntityOfPage":"https://registry.alpha.ac/people/william-r-klesse"},"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":7,"corroborated":4,"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":11,"under_review_claim_count":0,"owner_supplied_claim_count":0,"evidence_record_count":5,"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":7,"corroborated":4,"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":11,"corroborated_claims":4,"sources":5,"distinct_sources":1,"role_claims":1,"last_reviewed_at":"2026-05-16T06:37:35.741+00:00","observed_at":"2026-09-21T17:13:18.156129+00:00","freshness_days":128}},"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":"william-r-klesse","canonical_url":"https://registry.alpha.ac/people/william-r-klesse"},"publication":{"published_at":"2026-04-21T02:55:15.270549+00:00","last_reviewed_at":"2026-05-16T06:37:35.741+00:00","as_of":"2026-09-21T17:13:18.156129+00:00"},"representations":{"html":{"href":"https://registry.alpha.ac/people/william-r-klesse","media_type":"text/html"},"json":{"href":"https://registry.alpha.ac/api/public/profiles/william-r-klesse","media_type":"application/json"},"markdown":{"href":"https://registry.alpha.ac/people/william-r-klesse.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}}}