{"schema_version":"alpha-governance-record-v2","alpha_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce","ontology_version":"alpha-governance-ontology-v1","as_of":"2026-10-17T20:51:04.53386+00:00","published_at":"2026-10-17T04:45:41.550633+00:00","section":"events","data":{"state":"PUBLISHED","derivation_version":"alpha-governance-event-derivation-v2","events":[{"event_id":"alpha:event:transition:1crbhk111w0o21","event_type":"DIRECTOR_APPOINTED","effective_at":"2026-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:liam-p-caffrey-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:6"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Liam P. Caffrey seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2026-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:6sfhdd11kao39","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:reid-t-campbell-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:11"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Reid T. Campbell seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1d9u6mdmy4tf5","event_type":"DIRECTOR_APPOINTED","effective_at":"2023-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:steven-m-yi-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:12"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Steven M. Yi seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2023-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1d43jfpcvjctf","event_type":"DIRECTOR_APPOINTED","effective_at":"2023-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:weston-m-hicks-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:14"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Weston M. Hicks seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2023-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1ene3ezysv39j","event_type":"DIRECTOR_APPOINTED","effective_at":"2021-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:margaret-dillon-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:7"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Margaret Dillon seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2021-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:10jiwcy13ksooa","event_type":"DIRECTOR_APPOINTED","effective_at":"2021-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:suzanne-f-shank-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:13"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Suzanne F. Shank seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2021-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1e312o1bx4r0e","event_type":"DIRECTOR_APPOINTED","effective_at":"2019-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:peter-m-carlson-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:9"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Peter M. Carlson seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2019-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:g58rmbs69mwn","event_type":"DIRECTOR_APPOINTED","effective_at":"2018-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:david-a-tanner-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:5"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"David A. Tanner seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2018-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1h6i59nrmonhf","event_type":"DIRECTOR_APPOINTED","effective_at":"2018-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:philip-a-gelston-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:10"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Philip A. Gelston seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2018-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:1ngn9rp18oil9h","event_type":"DIRECTOR_APPOINTED","effective_at":"2017-01-01","detected_at":"2026-10-17T04:45:41.550633+00:00","subject_ids":["alpha:person:mary-c-choksi-wtm","alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1"],"caused_claim_ids":["alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:8"],"evidence_ids":["alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba"],"summary":"Mary C. Choksi seat on WHITE MOUNTAINS INSURANCE GROUP LTD, effective 2017-01-01.","derivation":"temporal_relationship_change"}]},"claims":[{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:5","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:david-a-tanner-wtm","object_label":"David A. Tanner","object_source_name_forms":[],"value":"David A. Tanner: Director","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:david-a-tanner-wtm","name":"David A. Tanner"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2018-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2018-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2018-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:6","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:liam-p-caffrey-wtm","object_label":"Liam P. Caffrey","object_source_name_forms":[],"value":"Liam P. Caffrey: Director","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:liam-p-caffrey-wtm","name":"Liam P. Caffrey"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2026-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2026-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2026-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:7","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:margaret-dillon-wtm","object_label":"Margaret Dillon","object_source_name_forms":[],"value":"Margaret Dillon: Director","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:margaret-dillon-wtm","name":"Margaret Dillon"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2021-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2021-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2021-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:8","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:mary-c-choksi-wtm","object_label":"Mary C. Choksi","object_source_name_forms":[],"value":"Mary C. Choksi: Director","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:mary-c-choksi-wtm","name":"Mary C. Choksi"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2017-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2017-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2017-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:9","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:peter-m-carlson-wtm","object_label":"Peter M. Carlson","object_source_name_forms":[],"value":"Peter M. Carlson: Director","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:peter-m-carlson-wtm","name":"Peter M. Carlson"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"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":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2019-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:10","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:philip-a-gelston-wtm","object_label":"Philip A. Gelston","object_source_name_forms":[],"value":"Philip A. Gelston: Director","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:philip-a-gelston-wtm","name":"Philip A. Gelston"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2018-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2018-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2018-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:11","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:reid-t-campbell-wtm","object_label":"Reid T. Campbell","object_source_name_forms":[],"value":"Reid T. Campbell: Director","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:reid-t-campbell-wtm","name":"Reid T. Campbell"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2024-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2024-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2024-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:12","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:steven-m-yi-wtm","object_label":"Steven M. Yi","object_source_name_forms":[],"value":"Steven M. Yi: Director","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:steven-m-yi-wtm","name":"Steven M. Yi"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"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":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2023-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:13","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:suzanne-f-shank-wtm","object_label":"Suzanne F. Shank","object_source_name_forms":[],"value":"Suzanne F. Shank: Director","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:suzanne-f-shank-wtm","name":"Suzanne F. Shank"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"start_date":"2021-01-01","end_date":null},"corroboration_count":1,"source_claim_count":1,"valid_from":"2021-01-01","valid_to":null,"recorded_at":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2021-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"},{"id":"alpha:claim:company:500cae44-1784-47e9-8fcf-3767192ec8e1:leadership_role:14","subject_id":"alpha:company:500cae44-1784-47e9-8fcf-3767192ec8e1","predicate":"alpha:hasBoardOrCommitteeRole","object_id":"alpha:person:weston-m-hicks-wtm","object_label":"Weston M. Hicks","object_source_name_forms":[],"value":"Weston M. Hicks: Director","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:weston-m-hicks-wtm","name":"Weston M. Hicks"},"title":"Director","role_category":"director","committee":null,"is_board_chair":false,"is_independent":null,"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":"2026-10-17T04:45:41.550633+00:00","sources":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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":"2026-04-01T00:00:00+00:00","effective_from":"2023-01-01","effective_until":null,"observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":null,"verification_state":"source_reported","legacy_verification_label":"confirmed","review_state":"none","confidence":0.88,"assertion_type":"source_reported","evidence_state":"linked","publication_state":"PUBLISHED","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce"}],"evidence":[{"id":"alpha:projection-evidence:document:238750f36ccddd3b66e358316fe19879d43f332b28281d0cf5f77fcfc914c4ba","identity_scope":"source_document_reference","source_type":"sec_proxy","title":"DEF 14A tm261405d1_def14a.htm","publisher":null,"url":"https://www.sec.gov/Archives/edgar/data/776867/000110465926038487/tm261405d1_def14a.htm","source_date":"2026-04-01T00:00:00+00:00","retrieved_at":"2026-09-02T02:22:06.057545+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"}}],"coverage_state":"PUBLISHED","quality":{"schema_version":"alpha-record-quality-v2","overall":0.847,"status":"strong","publication_readiness":"ready","dimensions":{"identity":1,"coverage":0.5,"freshness":1,"evidence_completeness":1,"source_authority":0.814,"cross_source_agreement":0.75,"temporal_completeness":1},"diagnostics":{"published_claims":14,"factual_claims":14,"claims_with_linked_evidence":14,"disputed_claims":0,"conflicts":0,"stale_claims":0,"stale_claim_ids":[],"temporal_claims":10,"temporal_claims_with_valid_from":10,"missing_coverage_sections":["governance","financials","workforce","ownership","ratings"],"missing_expected_claims":["headquarters","official_website","executive_role","committee","financial_metric","governance_document","ownership","auditor","legal_matter","risk","ai_governance"]},"derivation":"deterministic_record_projection"},"publication":{"state":"PUBLISHED","published_at":"2026-10-17T04:45:41.550633+00:00","observed_at":"2026-10-17T04:45:41.550633+00:00","reviewed_at":"2026-10-17T04:45:41.550633+00:00","verified_at":"2026-10-17T04:45:41.550633+00:00"},"verification":{"schema_version":"alpha-verification-states-v1","state":"source_reported","identity_ownership":"unclaimed","assurance_level":null,"claim_state_counts":{"source_reported":14,"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/white-mountains-insurance-group-ltd/events","section":"events","href":"https://registry.alpha.ac/api/public/companies/white-mountains-insurance-group-ltd?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."]}