{"filing":{"accession_number":"0000947871-26-000941","cik":"0001022079","ticker":"DGX","company_name":"QUEST DIAGNOSTICS INC","form":"8-K","filing_date":"2026-10-22","report_date":"2026-10-21","primary_document":"ss6979200_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1022079/000094787126000941/ss6979200_8k.htm"},"events":[{"id":36996,"run_id":34098,"accession_number":"0000947871-26-000941","anchor_item_number":"8.01","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"summary":"Quest Diagnostics disclosed unauthorized access to its Quanum LSM system on October 21, 2026, involving access to certain patient records. The company promptly initiated incident response procedures, notified federal law enforcement, and engaged external cybersecurity experts. This is a material cybersecurity incident involving patient data breach at a major diagnostic services provider, meeting the definition of cybersecurity_incident under Item 1.05 (required disclosure since 2023).","company_name":"QUEST DIAGNOSTICS INC","ticker":"DGX","filing_date":"2026-10-22","form":"8-K","submitted_at":null,"items":[{"id":41566,"accession_number":"0000947871-26-000941","item_number":"8.01","item_title":"Other Events.","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"reasoning":"Quest Diagnostics disclosed unauthorized access to its Quanum LSM system on October 21, 2026, involving access to certain patient records. The company promptly initiated incident response procedures, notified federal law enforcement, and engaged external cybersecurity experts. This is a material cybersecurity incident involving patient data breach at a major diagnostic services provider, meeting the definition of cybersecurity_incident under Item 1.05 (required disclosure since 2023).","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:54:36.709349+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":41566,"accession_number":"0000947871-26-000941","item_number":"8.01","item_title":"Other Events.","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"reasoning":"Quest Diagnostics disclosed unauthorized access to its Quanum LSM system on October 21, 2026, involving access to certain patient records. The company promptly initiated incident response procedures, notified federal law enforcement, and engaged external cybersecurity experts. This is a material cybersecurity incident involving patient data breach at a major diagnostic services provider, meeting the definition of cybersecurity_incident under Item 1.05 (required disclosure since 2023).","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:54:36.709349+00:00","company_name":"QUEST DIAGNOSTICS INC","ticker":"DGX","filing_date":"2026-10-22"}]}