{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-23-044767","form_type":"8-K","ticker":"MBIO","cik":"0001680048","company_name":"MUSTANG BIO, INC.","filed_at":"2023-04-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:40.009418+00:00","generated_at":"2026-06-17T02:41:48.290422+00:00","sec_items":["1.02"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Mustang Bio terminates $75M Runway loan, pays $30.7M payoff","bullets":["Terminated Runway Loan Agreement (March 4, 2022) on April 11, 2023.","Company paid $30.7M to Runway Growth Finance Corp. covering principal, interest, and final payment.","Original facility provided up to $75M in term loans subject to milestone achievements.","Certain indemnification obligations under Section 12.3 survive termination."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-23-044767","json":"https://secwatch.observer/filing/0001104659-23-044767.json","markdown":"https://secwatch.observer/filing/0001104659-23-044767.md","text":"https://secwatch.observer/filing/0001104659-23-044767.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/0001104659-23-044767-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/tm2312633d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T02:41:48.290422+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":"0d81af280b37f644d17d82e7a0e736755eb506a0","claim":"MUSTANG BIO, INC. terminated Loan and Security Agreement with Runway Growth Finance Corp. valued at $30.7 million (effective 2023-04-11).","evidence_excerpt":"On April 11, 2023, the Loan and Security Agreement, dated as of March 4, 2022, by and among Mustang Bio, Inc. (the “Company”) and Runway Growth Finance Corp., as a lender and as administrative agent and collateral agent for Lenders (“Runway”), as amended by the First Amendment, dated as of December 7, 2022 (together, the “Runway Loan Agreement”), was terminated upon receipt by Runway of a payoff amount of $30.7 million from the Company","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/0001104659-23-044767-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"termination"},{"label":"Agreement","value":"credit facility"},{"label":"Counterparty","value":"Runway Growth Finance Corp."},{"label":"Value","value":"$30.7 million"},{"label":"Effective","value":"2023-04-11"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}