{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-114627","form_type":"8-K","ticker":"NWBO","cik":"0001072379","company_name":"NORTHWEST BIOTHERAPEUTICS INC","filed_at":"2025-11-20T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.726964+00:00","generated_at":"2026-05-16T17:52:09.503638+00:00","sec_items":["1.01","2.03"],"event_type":"debt","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"NWBO enters $5M convertible note with Yorkville for Sawston facility","bullets":["Promissory note of $5M with YA II PN, Ltd. (Yorkville) for 12 months, no payments due until maturity.","Note carries 5% original issue discount, no interest, and convertible at a small discount to market price.","Monthly conversion limited to ~1/5 of note amount unless conversion price above $0.29.","Proceeds to fund construction/equipment for first Grade C manufacturing suite at Sawston, UK, plus operations."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-114627","json":"https://secwatch.observer/filing/0001104659-25-114627.json","markdown":"https://secwatch.observer/filing/0001104659-25-114627.md","text":"https://secwatch.observer/filing/0001104659-25-114627.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1072379/000110465925114627/0001104659-25-114627-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1072379/000110465925114627/tm2531842d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T17:52:09.503638+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":"22343abe71b9fdaa5c4d4385608d00c579bc4f02","claim":"NORTHWEST BIOTHERAPEUTICS INC incurred convertible notes of $5 million with YA II PN, Ltd. at no interest maturing 12 months.","evidence_excerpt":"On November 14, 2025 the Company entered into a $5 million convertible Promissory Note financing (the “Note”) with YA II PN, Ltd., an investment fund managed by Yorkville Advisors Global, LP (“Yorkville”).","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/1072379/000110465925114627/0001104659-25-114627-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"convertible notes"},{"label":"Principal","value":"$5 million"},{"label":"Counterparty","value":"YA II PN, Ltd."},{"label":"Rate","value":"no interest"},{"label":"Maturity","value":"12 months"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}