{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-028027","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2025-05-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:49.874548+00:00","generated_at":"2026-05-20T08:33:45.824857+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.95,"calibrated_materiality_score":0.95,"confidence":"high","headline":"ESS Tech warns of potential shutdown; issues WARN notices for Wilsonville site","bullets":["As of May 27, 2025, ESS Tech has not raised capital needed to avoid or postpone a shutdown.","Company issued WARN Act notices to employees and officials; shutdown effective May 30 if no financing.","Continues to explore financing options; notes a utility project in contracting but not yet secured.","Potential workforce actions if financing not obtained imminently."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-028027","json":"https://secwatch.observer/filing/0001628280-25-028027.json","markdown":"https://secwatch.observer/filing/0001628280-25-028027.md","text":"https://secwatch.observer/filing/0001628280-25-028027.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000162828025028027/0001628280-25-028027-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000162828025028027/wk-20250527.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T08:33:45.824857+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"}