{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-073396","form_type":"8-K","ticker":null,"cik":"0001656634","company_name":"Gritstone bio, Inc.","filed_at":"2025-04-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:49.228820+00:00","generated_at":"2026-05-23T21:07:26.188380+00:00","sec_items":["1.03","3.02","3.03","5.01","5.02","8.01","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.9,"calibrated_materiality_score":0.9,"confidence":"high","headline":"Gritstone bio exits Chapter 11; all common stock cancelled, creditors receive new equity","bullets":["Bankruptcy Court confirmed Second Modified Plan of Reorganization on April 3, 2025; effective April 4, 2025.","All outstanding shares of common stock, options, and warrants cancelled; holders receive no recovery.","Debt-to-equity conversion gives DIP lenders new equity in reorganized company; general unsecured creditors get liquidating trust distributions.","Directors resigned effective upon plan effectiveness; company emerged with restructured balance sheet.","Company filed to deregister securities under Exchange Act; stock now trades on OTC Pink under symbol GRTSQ."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-073396","json":"https://secwatch.observer/filing/0001193125-25-073396.json","markdown":"https://secwatch.observer/filing/0001193125-25-073396.md","text":"https://secwatch.observer/filing/0001193125-25-073396.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1656634/000119312525073396/0001193125-25-073396-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1656634/000119312525073396/d916691d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T21:07:26.188380+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":"54de29dc564d9a52d15fe86c1a95d45d123aa276","claim":"Gritstone bio, Inc. entered chapter 11 in United States Bankruptcy Court for the District of Delaware (petition 2024-10-10).","evidence_excerpt":"As previously reported, on October 10, 2024, Gritstone bio, Inc. (the “ Company ”) filed a voluntary petition for relief under Chapter 11 of Title 11 of the United States Code (the “ Bankruptcy Code ”) in the United States Bankruptcy Court for the District of Delaware (the “ Bankruptcy Court ”), thereby commencing a Chapter 11 case for the Company (the “ Chapter 11 Case ”).","evidence_source":"SEC 8-K Item 1.03","evidence_url":"https://www.sec.gov/Archives/edgar/data/1656634/000119312525073396/0001193125-25-073396-index.htm","confidence":0.9,"family_label":"Distress & Bankruptcy","details":[{"label":"Proceeding","value":"chapter 11"},{"label":"Court","value":"United States Bankruptcy Court for the District of Delaware"},{"label":"Petition","value":"2024-10-10"}],"fact_type":"distress_event"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}