{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-22-026830","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2022-10-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.309572+00:00","generated_at":"2026-06-23T01:42:32.239516+00:00","sec_items":["5.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"ESS Tech amends bylaws to update advance notice procedures and make technical updates","bullets":["Board adopted amended and restated bylaws effective October 20, 2022.","Revised advance notice procedures for director nominations and stockholder proposals.","Eliminated inoperative provisions and made conforming changes to Delaware law.","Technical edits and language updates throughout the bylaws."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-22-026830","json":"https://secwatch.observer/filing/0001628280-22-026830.json","markdown":"https://secwatch.observer/filing/0001628280-22-026830.md","text":"https://secwatch.observer/filing/0001628280-22-026830.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022026830/0001628280-22-026830-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022026830/wk-20221021.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-23T01:42:32.239516+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"}