{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-013029","form_type":"8-K","ticker":"MBIO","cik":"0001680048","company_name":"MUSTANG BIO, INC.","filed_at":"2025-02-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.416190+00:00","generated_at":"2026-05-26T22:20:50.279992+00:00","sec_items":["1.01","1.02"],"event_type":"other_material","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Mustang Bio sells FF&E for $1M, terminates Worcester lease; expects ~$2M savings","bullets":["Sold FF&E to AbbVie for $1.0M cash; lease termination expected to save ~$2.0M in lease obligations.","Lease base term (ending Oct 2026) terminated early; company to vacate 377 Plantation St within ~20 business days.","Waived lease extension options; no further rent or operating expenses after Early Termination Date.","Escrow agent holds purchase price pending inspection of FF&E condition; agreement provides for price adjustment if FF&E insufficient."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-013029","json":"https://secwatch.observer/filing/0001104659-25-013029.json","markdown":"https://secwatch.observer/filing/0001104659-25-013029.md","text":"https://secwatch.observer/filing/0001104659-25-013029.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680048/000110465925013029/0001104659-25-013029-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680048/000110465925013029/tm256594d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T22:20:50.279992+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"}