{"filing":{"accession_number":"0001104659-26-109813","cik":"0001083446","ticker":"ASTH","company_name":"Astrana Health, Inc.","form":"8-K","filing_date":"2026-09-23","report_date":"2026-09-22","primary_document":"asth-20260922x8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1083446/000110465926109813/asth-20260922x8k.htm"},"events":[{"id":34471,"run_id":31717,"accession_number":"0001104659-26-109813","anchor_item_number":"1.05","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.98,"summary":"The filing explicitly discloses a material cybersecurity incident under Item 1.05, involving social engineering attacks that led to unauthorized access and potential exfiltration of private patient, employee, provider, and business information. The Company determined the incident is material as of September 22, 2026, due to the sensitive nature of the accessed data and potential impacts on business operations, regulatory compliance, and reputation—all hallmarks of a material cybersecurity incident requiring 8-K disclosure.","company_name":"Astrana Health, Inc.","ticker":"ASTH","filing_date":"2026-09-23","form":"8-K","submitted_at":null,"items":[{"id":38199,"accession_number":"0001104659-26-109813","item_number":"1.05","item_title":"Material Cybersecurity Incident.","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.98,"reasoning":"The filing explicitly discloses a material cybersecurity incident under Item 1.05, involving social engineering attacks that led to unauthorized access and potential exfiltration of private patient, employee, provider, and business information. The Company determined the incident is material as of September 22, 2026, due to the sensitive nature of the accessed data and potential impacts on business operations, regulatory compliance, and reputation—all hallmarks of a material cybersecurity incident requiring 8-K disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T11:32:59.359703+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":38199,"accession_number":"0001104659-26-109813","item_number":"1.05","item_title":"Material Cybersecurity Incident.","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.98,"reasoning":"The filing explicitly discloses a material cybersecurity incident under Item 1.05, involving social engineering attacks that led to unauthorized access and potential exfiltration of private patient, employee, provider, and business information. The Company determined the incident is material as of September 22, 2026, due to the sensitive nature of the accessed data and potential impacts on business operations, regulatory compliance, and reputation—all hallmarks of a material cybersecurity incident requiring 8-K disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T11:32:59.359703+00:00","company_name":"Astrana Health, Inc.","ticker":"ASTH","filing_date":"2026-09-23"}]}