{"schema_version":"alpha-governance-record-v2","alpha_id":"alpha:company:c262d042-a866-4141-9e68-57a9d44efff5","record_version":"public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce","ontology_version":"alpha-governance-ontology-v1","as_of":"2026-10-16T10:56:46.313678+00:00","published_at":"2026-10-16T04:45:48.120208+00:00","section":"events","data":{"state":"PUBLISHED","derivation_version":"alpha-governance-event-derivation-v2","events":[{"event_id":"alpha:event:transition:1igf9w41ysvi94","event_type":"EXECUTIVE_APPOINTED","effective_at":"2025-12-19","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:arnette","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:18"],"evidence_ids":["alpha:projection-evidence:document:bd50a8d2ffe34f5cfca5e553b5c0e57a9f1eda5c1375082b5f40168830f15c2d"],"summary":"Arnette executive of Amentum Holdings, Inc., effective 2025-12-19.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:zecn48fecqbu","event_type":"EXECUTIVE_APPOINTED","effective_at":"2025-12-19","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:demetriou","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:19"],"evidence_ids":["alpha:projection-evidence:document:62818ee284bfef6dea4a29c8cd573fe174b72286a082267547ff7b856e1a45a6"],"summary":"Demetriou executive of Amentum Holdings, Inc., effective 2025-12-19.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:mkl3lr4xpofz","event_type":"GC_CHANGED","effective_at":"2025-12-19","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:michele-t-st-mary-amtm","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:21"],"evidence_ids":["alpha:projection-evidence:document:4e8982fac21e86deb29f86488be78b7570e0f2e11611562b8c34e92d690e981b"],"summary":"Michele T. 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Eberhart seat on Amentum Holdings, Inc., effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:hdo1unqnymzf","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:general-vincent-k-brooks","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:11"],"evidence_ids":["alpha:projection-evidence:document:26af7aa93ef557ac2145d2d5b3a120d719ee688d9d123236f14a892403d84f20"],"summary":"General Vincent K. Brooks seat on Amentum Holdings, Inc., effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:11ku2gc1xde9qg","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:john-heller","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:12"],"evidence_ids":["alpha:projection-evidence:document:26af7aa93ef557ac2145d2d5b3a120d719ee688d9d123236f14a892403d84f20"],"summary":"John Heller seat on Amentum Holdings, Inc., effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:h6g2711hcojxt","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:john-vollmer","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:13"],"evidence_ids":["alpha:projection-evidence:document:26af7aa93ef557ac2145d2d5b3a120d719ee688d9d123236f14a892403d84f20"],"summary":"John Vollmer seat on Amentum Holdings, Inc., effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:13vrrn01ypq6oi","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:russell-triedman","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:14"],"evidence_ids":["alpha:projection-evidence:document:26af7aa93ef557ac2145d2d5b3a120d719ee688d9d123236f14a892403d84f20"],"summary":"Russell Triedman seat on Amentum Holdings, Inc., effective 2024-01-01.","derivation":"temporal_relationship_change"},{"event_id":"alpha:event:transition:12872xzd4npnb","event_type":"DIRECTOR_APPOINTED","effective_at":"2024-01-01","detected_at":"2026-10-16T04:45:48.120208+00:00","subject_ids":["alpha:person:s-leslie-ireland","alpha:company:c262d042-a866-4141-9e68-57a9d44efff5"],"caused_claim_ids":["alpha:claim:company:c262d042-a866-4141-9e68-57a9d44efff5:leadership_role:15"],"evidence_ids":["alpha:projection-evidence:document:26af7aa93ef557ac2145d2d5b3a120d719ee688d9d123236f14a892403d84f20"],"summary":"S. 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