{"schema_version":"secwatch.filing_event.v1","accession":"0001819438-25-000019","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2025-08-18T23:59:59+00:00","discovered_at":"2026-05-14T18:02:45.117983+00:00","generated_at":"2026-05-17T12:00:44.470371+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"ESS Tech appoints Jigish Trivedi as COO effective August 18, 2025","bullets":["Jigish Trivedi appointed COO effective Aug 18, 2025; previously SVP Operations at Electric Hydrogen Co. and senior roles at Micron and First Solar.","Annual base salary of $375,000; target bonus up to 75% of salary; 275,000 RSUs vesting over four years.","On termination without cause: 6 months base salary severance and accelerated vesting of RSUs scheduled to vest in 12 months.","Employment agreement with standard indemnification; full text to be filed as exhibit to next 10-Q."],"urls":{"canonical":"https://secwatch.observer/filing/0001819438-25-000019","json":"https://secwatch.observer/filing/0001819438-25-000019.json","markdown":"https://secwatch.observer/filing/0001819438-25-000019.md","text":"https://secwatch.observer/filing/0001819438-25-000019.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000181943825000019/0001819438-25-000019-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000181943825000019/wk-20250812.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T12:00:44.470371+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"}