{"schema_version":"secwatch.filing_event.v1","accession":"0001819438-26-000003","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2026-01-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.323732+00:00","generated_at":"2026-05-16T11:33:12.036388+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"ESS Tech appoints Drew Buckley as CEO, names Goodman CSO/GC and Suhadolnik permanent CFO","bullets":["Drew Buckley, former Head of Capital Markets Strategy, becomes CEO effective Jan 1, 2026; base salary $425K, annual target bonus up to 90%.","Kelly Goodman transitions from Interim CEO to Chief Strategy Officer and General Counsel, salary increased to $360K.","Kate Suhadolnik, previously Interim CFO since Aug 2025, appointed permanent CFO with salary of $360K.","Company indicates manufacturing and first Energy Base deliveries expected in 2026; plans investor/analyst day.","Buckley spent 17 years at William Blair, most recently as Partner and sector leader for technology."],"urls":{"canonical":"https://secwatch.observer/filing/0001819438-26-000003","json":"https://secwatch.observer/filing/0001819438-26-000003.json","markdown":"https://secwatch.observer/filing/0001819438-26-000003.md","text":"https://secwatch.observer/filing/0001819438-26-000003.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000181943826000003/0001819438-26-000003-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000181943826000003/wk-20260101.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T11:33:12.036388+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"}