{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-22-028186","form_type":"8-K","ticker":"GWH","cik":"0001819438","company_name":"ESS Tech, Inc.","filed_at":"2022-11-03T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.309860+00:00","generated_at":"2026-06-22T09:47:12.289677+00:00","sec_items":["2.02","5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"ESS Tech reports Q3 revenue $189K, appoints Anthony Rabb as CFO","bullets":["Q3 2022 revenue of $189K from one Energy Warehouse unit deployed by Sycamore International.","Automated manufacturing line installation underway; expected fully operational before year-end, enabling >750 MWh annual capacity.","Announced multi-year agreement with SMUD to supply up to 2 GWh of long-duration storage, shipments starting in 2023.","CFO Amir Moftakhar resigned Nov 4; Anthony Rabb appointed, previously CFO of Total Safety and Mirion.","Vince Canino appointed COO on August 26, 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-22-028186","json":"https://secwatch.observer/filing/0001628280-22-028186.json","markdown":"https://secwatch.observer/filing/0001628280-22-028186.md","text":"https://secwatch.observer/filing/0001628280-22-028186.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/wk-20221103.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-22T09:47:12.289677+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":[{"claim_id":"e481526b35703937182d0bcc9a0859749c190f62","claim":"ESS Tech, Inc. reported third quarter of 2022 ended September 30, 2022 results: revenue $189 thousand.","evidence_excerpt":"quarter, which should increase our annual production capacity to over 750 MWh. The fully-automated manufacturing line is expected to be operational before year end. • Recognized $189 thousand in revenue in the third quarter on one Energy WarehouseTM that was delivered to partner TerraSol Energies in the second quarter. This unit was deployed by Sycamore International,","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm","confidence":0.95,"family_label":"Earnings Releases","details":[{"label":"Period","value":"third quarter of 2022 ended September 30, 2022"},{"label":"Revenue","value":"$189 thousand"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"},{"claim_id":"4780c790f3","claim":"Amir Moftakhar resigned as Chief Financial Officer at ESS Tech, Inc..","evidence_excerpt":"On November 3, 2022, Amir Moftakhar, Chief Financial Officer of the Company tendered his resignation as Chief Financial Officer to be effective as of November 4, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"d870e8cb91","claim":"Anthony Rabb was appointed as Chief Financial Officer at ESS Tech, Inc..","evidence_excerpt":"On November 3, 2022, the Company announced the appointment of Anthony Rabb as Chief Financial Officer of the Company, effective November 4, 2022","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}