{"schema_version":"secwatch.filing_event.v1","accession":"0001819438-26-000011","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2026-03-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.324578+00:00","generated_at":"2026-05-15T19:49:22.191425+00:00","sec_items":["2.02","8.01","9.01"],"event_type":"earnings","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"ESS Tech reports FY2025 net loss $63.4M, Adj. EBITDA -$44.3M, cash strengthened","bullets":["Revenue of $1.6M; net loss improved to $63.4M from $86.2M in 2024; Adj. EBITDA -$44.3M vs -$71.3M.","OpEx down 33% to $29.7M; cash & short-term investments $22M at year-end; raised $15M in Jan 2026.","Leadership reset: Drew Buckley CEO, Kelly Goodman CSO/GC, Kate Suhadolnik CFO.","Acquired VoltStorage IP; $9.9M military LDES contract; updated Google collaboration for Project New Horizon.","Repaid 95% of $30M note tranche; drew second $10M tranche from YA II PN."],"urls":{"canonical":"https://secwatch.observer/filing/0001819438-26-000011","json":"https://secwatch.observer/filing/0001819438-26-000011.json","markdown":"https://secwatch.observer/filing/0001819438-26-000011.md","text":"https://secwatch.observer/filing/0001819438-26-000011.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000181943826000011/0001819438-26-000011-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000181943826000011/wk-20260305.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T19:49:22.191425+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"}