{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-22-018593","form_type":"8-K","ticker":"MBIO","cik":"0001680048","company_name":"MUSTANG BIO, INC.","filed_at":"2022-12-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:51.688290+00:00","generated_at":"2026-06-21T05:28:45.294295+00:00","sec_items":["1.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Mustang Bio amends $75M loan agreement to replace LIBOR with SOFR-based rates","bullets":["First Amendment to $75M Loan Agreement with Runway Growth Finance Corp., dated Dec 7, 2022.","Replaces LIBOR with Adjusted Term SOFR Rate (Term SOFR + 0.26%, floor 0.50%).","Applicable Margin of 8.75% when using Adjusted Term SOFR Rate; total rate floor of 9.25%.","Amendment includes fallback provisions if SOFR unavailable (Prime Rate alternative).","No change to principal amount or maturity; loan terms otherwise unchanged."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-22-018593","json":"https://secwatch.observer/filing/0001558370-22-018593.json","markdown":"https://secwatch.observer/filing/0001558370-22-018593.md","text":"https://secwatch.observer/filing/0001558370-22-018593.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680048/000155837022018593/0001558370-22-018593-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680048/000155837022018593/tmb-20221207x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T05:28:45.294295+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":"d307dde6bb90d0a0d401547e90600f6bf65acd24","claim":"MUSTANG BIO, INC. amended First Amendment with Runway Growth Finance Corp. (effective 2022-12-07).","evidence_excerpt":"On December 7, 2022, the Company entered into the First Amendment (the “First Amendment”) to the Loan Agreement by and between the Company and Runway.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1680048/000155837022018593/0001558370-22-018593-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"credit facility"},{"label":"Counterparty","value":"Runway Growth Finance Corp."},{"label":"Effective","value":"2022-12-07"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}