{"filing":{"accession_number":"0001819438-26-000067","cik":"0001819438","ticker":"GWH-WT","company_name":"ESS Tech, Inc.","form":"8-K","filing_date":"2026-08-06","report_date":"2026-08-06","primary_document":"wk-20260806.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1819438/000181943826000067/wk-20260806.htm"},"events":[{"id":25979,"run_id":23591,"accession_number":"0001819438-26-000067","anchor_item_number":"8.01","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.72,"summary":"ESS Tech disclosed its cash position as of July 31, 2026, reporting $5.6 million in cash, cash equivalents, and short-term investments. This liquidity disclosure is material to investors assessing the company's financial health and ability to fund operations.","company_name":"ESS Tech, Inc.","ticker":"GWH-WT","filing_date":"2026-08-06","form":"8-K","submitted_at":null,"items":[{"id":26936,"accession_number":"0001819438-26-000067","item_number":"2.02","item_title":"Results of Operations and Financial Condition.","event_type":"other_material","event_domain":"catchall","is_material":false,"confidence":0.45,"reasoning":"Item 2.02 is filed but contains only a cross-reference to Item 8.01 without disclosing any actual financial results, operational metrics, or financial condition information. The section is purely procedural boilerplate regarding filing status and incorporation by reference, providing no substantive disclosure of earnings, results, or financial condition that would normally trigger an earnings_release classification. Without access to the referenced Item 8.01 content, the materiality and specific event type cannot be determined from this section alone.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-09T02:51:52.364820+00:00","company_name":"","ticker":null,"filing_date":""},{"id":26937,"accession_number":"0001819438-26-000067","item_number":"8.01","item_title":"Other Information.","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.72,"reasoning":"The disclosure reports the Company's cash position as of July 31, 2026 ($5.6 million in cash, cash equivalents, and short-term investments) in Item 8.01 (Other Information). While this is a financial metric, it does not fit the specific categories of earnings_release, debt_issuance, dividend_distribution, or material_impairment. The cash position is material to investors assessing liquidity and financial health, particularly for a company in the energy storage sector. This is classified as financial_other because it is clearly a financial disclosure but does not match a named financial event type.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-09T02:51:52.364820+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":26936,"accession_number":"0001819438-26-000067","item_number":"2.02","item_title":"Results of Operations and Financial Condition.","event_type":"other_material","event_domain":"catchall","is_material":false,"confidence":0.45,"reasoning":"Item 2.02 is filed but contains only a cross-reference to Item 8.01 without disclosing any actual financial results, operational metrics, or financial condition information. The section is purely procedural boilerplate regarding filing status and incorporation by reference, providing no substantive disclosure of earnings, results, or financial condition that would normally trigger an earnings_release classification. Without access to the referenced Item 8.01 content, the materiality and specific event type cannot be determined from this section alone.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-09T02:51:52.364820+00:00","company_name":"ESS Tech, Inc.","ticker":"GWH-WT","filing_date":"2026-08-06"},{"id":26937,"accession_number":"0001819438-26-000067","item_number":"8.01","item_title":"Other Information.","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.72,"reasoning":"The disclosure reports the Company's cash position as of July 31, 2026 ($5.6 million in cash, cash equivalents, and short-term investments) in Item 8.01 (Other Information). While this is a financial metric, it does not fit the specific categories of earnings_release, debt_issuance, dividend_distribution, or material_impairment. The cash position is material to investors assessing liquidity and financial health, particularly for a company in the energy storage sector. This is classified as financial_other because it is clearly a financial disclosure but does not match a named financial event type.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-09T02:51:52.364820+00:00","company_name":"ESS Tech, Inc.","ticker":"GWH-WT","filing_date":"2026-08-06"}]}