{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-018299","form_type":"8-K","ticker":"MBIO","cik":"0001680048","company_name":"MUSTANG BIO, INC.","filed_at":"2025-02-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.416575+00:00","generated_at":"2026-05-26T02:07:58.988844+00:00","sec_items":["2.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Mustang Bio sells fixed assets to AbbVie for $1M, exits Worcester facility","bullets":["Closed sale of furniture, fixtures, equipment to AbbVie for $1.0M; lease terminated.","Exits manufacturing facility in Worcester, MA; corporate HQ moved to Waltham, MA.","Expects ~$2.0M cash savings over 24 months from lease termination.","Plans to rely on academic partners and contract manufacturers for clinical trials.","Aims to initiate MB-109 (HSV-1 oncolytic virus + CAR-T) trial for GBM in H2 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-018299","json":"https://secwatch.observer/filing/0001104659-25-018299.json","markdown":"https://secwatch.observer/filing/0001104659-25-018299.md","text":"https://secwatch.observer/filing/0001104659-25-018299.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680048/000110465925018299/0001104659-25-018299-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680048/000110465925018299/tm257773d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T02:07:58.988844+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}