{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-104427","form_type":"8-K","ticker":"NWBO","cik":"0001072379","company_name":"NORTHWEST BIOTHERAPEUTICS INC","filed_at":"2025-10-30T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.726553+00:00","generated_at":"2026-05-17T01:13:40.951718+00:00","sec_items":["1.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"NWBO closes Advent BioServices acquisition; pays £1.4M + AP over 2 years; 19M securities revert","bullets":["Acquisition of Advent BioServices closed; Advent becomes wholly owned subsidiary.","No new shares issued; 13.5M shares and 5.5M options previously issued to Advent revert to NWBO.","Consideration: £1.4 million plus net accounts payable, paid in installments over two years starting 90 days post-closing.","Installment payments may accelerate upon regulatory approval of DCVax-L; NWBO receives fixed assets, cryostorage, and IP."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-104427","json":"https://secwatch.observer/filing/0001104659-25-104427.json","markdown":"https://secwatch.observer/filing/0001104659-25-104427.md","text":"https://secwatch.observer/filing/0001104659-25-104427.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1072379/000110465925104427/0001104659-25-104427-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1072379/000110465925104427/tm2529815d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T01:13:40.951718+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"}