# ESS Tech, Inc.: overview GWHT · OTC · CIK 1819438 · [Technology](/sectors/technology.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/gwht.md) · [Financials](/companies/gwht/financials.md) · [Filings](/companies/gwht/filings.md) · [Insiders](/companies/gwht/insiders.md) Latest reported revenue: [$73.0k](/filings/0001819438-26-000074.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 11, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001819438-26-000074). ## Last eight quarters | Line item | Unit | Q3 FY2024 (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [0.4](/filings/0001819438-25-000076.md) | [2.9 d](/filings/0001819438-26-000012.md) | [0.6](/filings/0001819438-26-000034.md) | [2.4](/filings/0001819438-26-000074.md) | [0.2](/filings/0001819438-25-000076.md) | [(1.6) d](/filings/0001819438-26-000012.md) | [0.1](/filings/0001819438-26-000034.md) | [0.1](/filings/0001819438-26-000074.md) | | Gross margin | % | [(3449.0%)](/filings/0001819438-25-000076.md) | [(462.7%) d](/filings/0001819438-26-000012.md) | [(1360.1%)](/filings/0001819438-26-000034.md) | [(216.3%)](/filings/0001819438-26-000074.md) | [(2207.9%)](/filings/0001819438-25-000076.md) | [610.8% d](/filings/0001819438-26-000012.md) | [(5498.4%)](/filings/0001819438-26-000034.md) | [(10165.8%)](/filings/0001819438-26-000074.md) | | Operating margin | % | [(6596.7%)](/filings/0001819438-25-000076.md) | [(824.5%) d](/filings/0001819438-26-000012.md) | [(3029.4%)](/filings/0001819438-26-000034.md) | [(490.1%)](/filings/0001819438-26-000074.md) | [(4584.6%)](/filings/0001819438-25-000076.md) | [1126.8% d](/filings/0001819438-26-000012.md) | [(10765.6%)](/filings/0001819438-26-000034.md) | [(20731.5%)](/filings/0001819438-26-000074.md) | | Net margin | % | [(6265.5%)](/filings/0001819438-25-000076.md) | [(823.8%) d](/filings/0001819438-26-000012.md) | [(3009.3%)](/filings/0001819438-26-000074.md) | [(468.9%)](/filings/0001819438-26-000074.md) | [(4848.1%)](/filings/0001819438-25-000076.md) | [1510.3% d](/filings/0001819438-26-000012.md) | [(12439.1%)](/filings/0001819438-26-000074.md) | [(21305.5%)](/filings/0001819438-26-000074.md) | | Diluted EPS | $ per share | [(1.90)](/filings/0001819438-25-000076.md) | not reported | [(1.50)](/filings/0001819438-26-000034.md) | [(0.90)](/filings/0001819438-26-000074.md) | [(0.73)](/filings/0001819438-25-000076.md) | not reported | [(0.54)](/filings/0001819438-26-000034.md) | [(0.46)](/filings/0001819438-26-000074.md) | | Free cash flow | $m | [(19.9) d](/filings/0001819438-25-000076.md) | [(23.9) d](/filings/0001819438-26-000012.md) | [(19.0)](/filings/0001819438-26-000034.md) | [(13.1) d](/filings/0001819438-26-000074.md) | [(6.3) d](/filings/0001819438-25-000076.md) | [(16.2) d](/filings/0001819438-26-000012.md) | [(14.4)](/filings/0001819438-26-000034.md) | [(9.4) d](/filings/0001819438-26-000074.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [0.0](/filings/0001628280-23-005933.md) | [0.9](/filings/0001628280-24-011004.md) | [7.5](/filings/0001628280-25-015649.md) | [6.3](/filings/0001819438-26-000012.md) | [1.6](/filings/0001819438-26-000012.md) | | Gross margin | % | not reported | [100.0%](/filings/0001628280-24-011004.md) | [(171.8%)](/filings/0001628280-25-015649.md) | [(720.5%)](/filings/0001819438-26-000012.md) | [(1748.1%)](/filings/0001819438-26-000012.md) | | Operating margin | % | not reported | [(11800.0%)](/filings/0001628280-24-011004.md) | [(1139.3%)](/filings/0001628280-25-015649.md) | [(1426.5%)](/filings/0001819438-26-000012.md) | [(3626.5%)](/filings/0001819438-26-000012.md) | | Net margin | % | not reported | [(8721.4%)](/filings/0001628280-24-011004.md) | [(1028.9%)](/filings/0001628280-25-015649.md) | [(1369.7%)](/filings/0001819438-26-000012.md) | [(4007.6%)](/filings/0001819438-26-000012.md) | | Diluted EPS | $ per share | [(5.73)](/filings/0001628280-23-005933.md) | [(0.51)](/filings/0001628280-24-011004.md) | [(7.27)](/filings/0001628280-25-015649.md) | [(7.32)](/filings/0001819438-26-000012.md) | [(4.34)](/filings/0001819438-26-000012.md) | | Free cash flow | $m | [(54.6)](/filings/0001628280-23-005933.md) | [(95.8)](/filings/0001628280-24-011004.md) | [(60.7)](/filings/0001628280-25-015649.md) | [(79.5)](/filings/0001819438-26-000012.md) | [(53.7)](/filings/0001819438-26-000012.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Gross margin (gross profit / revenue). XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax; Gross profit: us-gaap:GrossProfit. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/gwht/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [SOFTBANK GROUP CORP.](/funds/1065521.md) | 2026-06-30 | $2.3m | 2,396,980 | | Unchanged | | [Alyeska Investment Group, L.P.](/funds/1453072.md) | 2026-06-30 | $1.3m | 1,400,000 | | Unchanged | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $607.0k | 638,920 | | Added +4,200 | | [UBS Group AG](/funds/1610520.md) | 2026-06-30 | $572.5k | 602,607 | | Added +453,328 | | [Arosa Capital Management LP](/funds/1596053.md) | 2026-06-30 | $522.5k | 550,000 | | Reduced −360,000 | | [HEIGHTS CAPITAL MANAGEMENT, INC](/funds/1081698.md) | 2026-06-30 | $521.2k | 548,621 | | Reduced −414,874 | | [Shay Capital LLC](/funds/1723643.md) | 2026-06-30 | $199.6k | 210,146 | | Added +30,146 | | [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $199.5k | 210,037 | | Reduced −13,524 | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $127.2k | 133,867 | | Added +83,497 | | [VANGUARD FIDUCIARY TRUST CO](/funds/933478.md) | 2026-06-30 | $123.4k | 129,877 | | Added +60,475 | ## Recent filings [All 466 filings](/companies/gwht/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-10-05 | 12:39 ET | [8-K](/filings/0001819438-26-000088.md) | 3.01 Delisting notice; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001819438-26-000088 | | 2026-09-30 | 20:22 ET | [8-K](/filings/0001819438-26-000086.md) | 3.01 Delisting notice | 0001819438-26-000086 | | 2026-09-24 | 20:11 ET | [DEF 14A](/filings/0001819438-26-000084.md) | Proxy statement, period 2026-09-24 | 0001819438-26-000084 | | 2026-09-03 | 20:36 ET | [8-K](/filings/0001819438-26-000080.md) | 5.02 Departure or appointment of officers or directors | 0001819438-26-000080 | | 2026-08-21 | 20:09 ET | [8-K](/filings/0001819438-26-000077.md) | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 8.01 Other events; 9.01 Financial statements and exhibits | 0001819438-26-000077 | | 2026-08-11 | 20:21 ET | [10-Q](/filings/0001819438-26-000074.md) | Quarterly report, period 2026-06-30 | 0001819438-26-000074 | | 2026-08-11 | 20:10 ET | [8-K](/filings/0001819438-26-000072.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001819438-26-000072 | | 2026-08-06 | 12:36 ET | [8-K](/filings/0001819438-26-000067.md) | 2.02 Results of operations; 8.01 Other events | 0001819438-26-000067 | | 2026-07-17 | 22:14 ET | [8-K](/filings/0001819438-26-000065.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001819438-26-000065 | | 2026-07-01 | 20:15 ET | [8-K](/filings/0001819438-26-000056.md) | 3.01 Delisting notice | 0001819438-26-000056 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001819438-26-000012.md), filed Mar 5, 2026. ## Forecast league Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/c3902ccd-26f8-41be-8ca7-a398e00d455b) ## About the filer - CIK: 1819438 - Tickers: GWHT, GWH - Exchange: OTC - SIC code: 3690 Miscellaneous Electrical Machinery, Equipment & Supplies - State of incorporation: DE - Filer category: Non-accelerated filer
Smaller reporting company Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:48 ET. No prices; not investment advice.