{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-23-079819","form_type":"8-K","ticker":"MBIO","cik":"0001680048","company_name":"MUSTANG BIO, INC.","filed_at":"2023-07-11T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.835122+00:00","generated_at":"2026-06-13T10:06:50.403367+00:00","sec_items":["1.02"],"event_type":"other_material","sentiment":"negative","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Mustang Bio terminates UCLA license for PSCA CAR T program, ends MB-105 development","bullets":["Terminated UCLA License Agreement for PSCA CAR T technology, effective ~Aug 9, 2023.","No early termination penalties incurred.","Previously terminated PSCA Technology License with City of Hope on May 17, 2023.","Licensed technology targeted prostate cancer, pancreatic cancer, and other solid tumors."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-23-079819","json":"https://secwatch.observer/filing/0001104659-23-079819.json","markdown":"https://secwatch.observer/filing/0001104659-23-079819.md","text":"https://secwatch.observer/filing/0001104659-23-079819.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923079819/0001104659-23-079819-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923079819/tm2320991d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T10:06:50.403367+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":[{"claim_id":"0b25275aefdd7f3290f01d3991962a96183f5113","claim":"MUSTANG BIO, INC. terminated UCLA License Agreement with Regents of the University of California (effective 2023-07-10).","evidence_excerpt":"on July 10, 2023, the Company terminated the Exclusive License Agreement, dated as of March 17, 2017, by and between the Company and the Regents of the University of California (the “UCLA License Agreement”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923079819/0001104659-23-079819-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"termination"},{"label":"Agreement","value":"license"},{"label":"Counterparty","value":"Regents of the University of California"},{"label":"Effective","value":"2023-07-10"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}