{"filing":{"accession_number":"0001193125-26-396654","cik":"0001521036","ticker":"LNTH","company_name":"Lantheus Holdings, Inc.","form":"8-K","filing_date":"2026-09-21","report_date":"2026-09-17","primary_document":"d148743d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1521036/000119312526396654/d148743d8k.htm"},"events":[{"id":33971,"run_id":31273,"accession_number":"0001193125-26-396654","anchor_item_number":"8.01","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"summary":"The disclosure describes a material acquisition in progress: Lantheus entered into a Merger Agreement with Curium US Holdings LLC on August 3, 2026, whereby Merger Sub will merge with Lantheus. The Item 8.01 filing updates the status of HSR antitrust review, noting that Parent voluntarily withdrew and resubmitted its HSR notification on September 17 and September 21, 2026, respectively, commencing a new 30-day waiting period expiring October 21, 2026. The parties expect to consummate the Merger in the first half of 2027, subject to regulatory approvals and stockholder adoption. This is a material acquisition event requiring disclosure of regulatory progress.","company_name":"Lantheus Holdings, Inc.","ticker":"LNTH","filing_date":"2026-09-21","form":"8-K","submitted_at":null,"items":[{"id":37575,"accession_number":"0001193125-26-396654","item_number":"8.01","item_title":"Other Events.","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"The disclosure describes a material acquisition in progress: Lantheus entered into a Merger Agreement with Curium US Holdings LLC on August 3, 2026, whereby Merger Sub will merge with Lantheus. The Item 8.01 filing updates the status of HSR antitrust review, noting that Parent voluntarily withdrew and resubmitted its HSR notification on September 17 and September 21, 2026, respectively, commencing a new 30-day waiting period expiring October 21, 2026. The parties expect to consummate the Merger in the first half of 2027, subject to regulatory approvals and stockholder adoption. This is a material acquisition event requiring disclosure of regulatory progress.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-21T20:07:03.969235+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":37575,"accession_number":"0001193125-26-396654","item_number":"8.01","item_title":"Other Events.","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"The disclosure describes a material acquisition in progress: Lantheus entered into a Merger Agreement with Curium US Holdings LLC on August 3, 2026, whereby Merger Sub will merge with Lantheus. The Item 8.01 filing updates the status of HSR antitrust review, noting that Parent voluntarily withdrew and resubmitted its HSR notification on September 17 and September 21, 2026, respectively, commencing a new 30-day waiting period expiring October 21, 2026. The parties expect to consummate the Merger in the first half of 2027, subject to regulatory approvals and stockholder adoption. This is a material acquisition event requiring disclosure of regulatory progress.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-21T20:07:03.969235+00:00","company_name":"Lantheus Holdings, Inc.","ticker":"LNTH","filing_date":"2026-09-21"}]}