{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-053438","form_type":"8-K","ticker":null,"cik":"0001656634","company_name":"Gritstone bio, Inc.","filed_at":"2024-02-29T23:59:59+00:00","discovered_at":"2026-05-14T18:03:24.999936+00:00","generated_at":"2026-06-05T06:49:59.997667+00:00","sec_items":["2.05"],"event_type":"other_material","sentiment":"negative","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Gritstone bio cuts workforce 40%, expects $2.5M in severance costs in H1 2024","bullets":["Workforce reduction of approximately 40% announced on February 29, 2024.","Aggregate cash costs estimated at $2.5M, primarily for employee severance and benefits.","Majority of costs expected to be incurred during the first half of 2024.","Reduction aimed at reducing costs and preserving capital."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-053438","json":"https://secwatch.observer/filing/0001193125-24-053438.json","markdown":"https://secwatch.observer/filing/0001193125-24-053438.md","text":"https://secwatch.observer/filing/0001193125-24-053438.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/0001193125-24-053438-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/d742426d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-05T06:49:59.997667+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":"c0457c7f429889039981d90ff07029652c6f0b3c","claim":"Gritstone bio, Inc. announced a restructuring with charges of approximately $2.5 million (approximately 40 percent).","evidence_excerpt":"On February 29, 2024, Gritstone bio, Inc. (the “Company”) announced a reduction in its workforce by approximately 40 percent intended to reduce costs and preserve capital. The Company expects to incur aggregate cash expenditures of approximately $2.5 million, primarily related to employee severance and benefit costs associated with the workforce reduction.","evidence_source":"SEC 8-K Item 2.05/2.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1656634/000119312524053438/0001193125-24-053438-index.htm","confidence":0.9,"family_label":"Restructurings & Charges","details":[{"label":"Type","value":"restructuring"},{"label":"Charge","value":"approximately $2.5 million"},{"label":"Headcount","value":"approximately 40 percent"}],"fact_type":"restructuring_charge"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}