Security
STWO · ESS Tech, Inc.
STWOCSECommon stockHistorical · closed Oct 11, 2021CIK 1819438Updated Sep 27, 2026
Name history
ACON S2 Acquisition Corp. · through Oct 8, 2021
Current security for this SEC filerGWH · NYSE
STWO price & chart
Historical security
This listing closed Oct 11, 2021. Live provider charts are shown only for current listings.
Current security: GWH
In the news
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Recent filings
Show 5 more recent filings
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements
Items 5.02
Entry into a Material Definitive Agreement · Unregistered Sales of Equity Securities · Other Events
Items 1.01, 3.02, 8.01, 9.01
424B5 filing
10-Q filing
Results of Operations and Financial Condition
Items 2.02, 9.01
Financials
FY 2025 · USDSource
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balance sheet · annual statements
| Line item | FY 2025 | FY 2024 | FY 2023 | FY 2022 |
|---|---|---|---|---|
| ASSETS | ||||
| AssetsUSD | 51,172,000Source | 71,813,000Source | 143,232,000Source | 173,553,000Source |
| Property, Plant and Equipment, NetUSD | 17,224,000Source | 20,582,000Source | 16,266,000Source | 17,570,000Source |
| Intangible Assets, Net (Excluding Goodwill)USD | 2,682,000Source | 4,656,000Source | 4,923,000Source | — |
| Current assets: | ||||
| Cash and Cash Equivalents, at Carrying ValueUSD | 14,477,000Source | 13,341,000Source | 20,165,000Source | 34,767,000Source |
| Accounts Receivable, after Allowance for Credit Loss, CurrentUSD | 13,000Source | 215,000Source | 1,990,000Source | 4,952,000Source |
| Inventory, NetUSD | 140,000Source | 5,641,000Source | 3,366,000Source | — |
| Assets, CurrentUSD | 26,247,000Source | 43,364,000Source | 118,098,000Source | 151,636,000Source |
| Prepaid Expense and Other Assets, CurrentUSD | 3,254,000Source | 4,998,000Source | 3,305,000Source | 5,657,000Source |
| Operating Lease, Right-of-Use AssetUSD | 3,767,000Source | 1,503,000Source | 2,167,000Source | 3,401,000Source |
| Other Assets, NoncurrentUSD | 634,000Source | 760,000Source | 833,000Source | 271,000Source |
| LIABILITIES AND EQUITY | ||||
| LiabilitiesUSD | 42,554,000Source | 42,929,000Source | 39,875,000Source | 36,579,000Source |
| Stockholders’ equity: | ||||
| Preferred Stock, Value, IssuedUSD | 0Source | 0Source | 0Source | 0Source |
| Common Stock, Value, IssuedUSD | 2,000Source | 1,000Source | 18,000Source | 16,000Source |
| Additional Paid in CapitalUSD | 854,435,000Source | 811,262,000Source | 799,496,000Source | 755,537,000Source |
| Retained Earnings (Accumulated Deficit)USD | -845,819,000Source | -782,379,000Source | -696,157,000Source | -618,579,000Source |
| Stockholders' Equity Attributable to ParentUSD | 8,618,000Source | 28,884,000Source | 103,357,000Source | 136,974,000Source |
| Liabilities and EquityUSD | 51,172,000Source | 71,813,000Source | 143,232,000Source | 173,553,000Source |
| Current liabilities: | ||||
| Liabilities, CurrentUSD | 25,292,000Source | 27,602,000Source | 19,766,000Source | 27,993,000Source |
| Operating Lease, Liability, CurrentUSD | 1,784,000Source | 1,692,000Source | 1,581,000Source | 1,421,000Source |
| Accounts Payable, CurrentUSD | 3,023,000Source | 8,070,000Source | 2,755,000Source | 3,036,000Source |
| Operating Lease, Liability, NoncurrentUSD | 2,060,000Source | 0Source | 957,000Source | 2,535,000Source |
| Other Liabilities, NoncurrentUSD | 41,000Source | 125,000Source | 0Source | 85,000Source |
| Additional Financial Items | ||||
| Cash, Cash Equivalents, and Short-term InvestmentsUSD | 22,000,000Source | 31,600,000Source | — | — |
| Long-term Debt, Excluding Current MaturitiesUSD | — | — | 0Source | — |
| Long-term Debt, Current MaturitiesUSD | — | — | 0Source | 1,600,000Source |
| Long-term Debt, Excluding Current MaturitiesUSD | — | — | 0Source | 315,000Source |
cash flow · annual statements
| Line item | FY 2025 | FY 2024 | FY 2023 | FY 2022 |
|---|---|---|---|---|
| Cash flows from operating activities: | ||||
| Adjustments to reconcile net income to net cash provided by operating activities: | ||||
| Depreciation, Depletion and AmortizationUSD | 5,740,000Source | 4,724,000Source | 6,513,000Source | 1,523,000Source |
| Share-based Payment Arrangement, Noncash ExpenseUSD | 5,434,000Source | 11,575,000Source | 10,635,000Source | 11,889,000Source |
| Changes in operating assets and liabilities: | ||||
| Increase (Decrease) in Accounts ReceivableUSD | -202,000Source | -1,549,000Source | -3,633,000Source | 1,886,000Source |
| Increase (Decrease) in InventoriesUSD | -4,833,000Source | 8,634,000Source | 14,661,000Source | — |
| Increase (Decrease) in Accounts PayableUSD | -3,842,000Source | 4,243,000Source | -229,000Source | 1,464,000Source |
| Net Cash Provided by (Used in) Operating ActivitiesUSD | -50,284,000Source | -72,219,000Source | -54,896,000Source | -81,620,000Source |
| Cash flows from investing activities: | ||||
| Net Cash Provided by (Used in) Investing ActivitiesUSD | 7,528,000Source | 64,757,000Source | 15,071,000Source | -117,884,000Source |
| Payments to Acquire Property, Plant, and EquipmentUSD | 3,387,000Source | 7,294,000Source | 5,790,000Source | 14,180,000Source |
| Cash flows from financing activities: | ||||
| Payment, Tax Withholding, Share-based Payment ArrangementUSD | 50,000Source | 297,000Source | 310,000Source | 2,808,000Source |
| Net Cash Provided by (Used in) Financing ActivitiesUSD | 43,462,000Source | 174,000Source | 25,653,000Source | -4,073,000Source |
| Proceeds from (Payments for) Other Financing ActivitiesUSD | — | 0Source | -214,000Source | -22,000Source |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate EffectUSD | 706,000Source | -7,288,000Source | -14,172,000Source | -203,577,000Source |
| Cash, Cash Equivalents, Restricted Cash and Restricted Cash EquivalentsUSD | 15,901,000Source | 15,195,000Source | 22,483,000Source | 36,655,000Source |
| Supplemental disclosure of cash flow information: | ||||
| Interest Paid, Excluding Capitalized Interest, Operating ActivitiesUSD | 520,000Source | — | 0Source | 154,000Source |
| Additional Financial Items | ||||
| Share-based Payment Arrangement, ExpenseUSD | 5,434,000Source | 11,575,000Source | 10,635,000Source | 11,889,000Source |
| Amortization of Intangible AssetsUSD | 300,000Source | 300,000Source | 67,000Source | — |
| Cash, Cash Equivalents, and Short-term InvestmentsUSD | 22,000,000Source | 31,600,000Source | — | — |
| Debt Securities, Trading, Gain (Loss)USD | — | — | — | -45,000Source |
| DepreciationUSD | 5,400,000Source | 4,500,000Source | 6,400,000Source | 1,506,000Source |
| Derivative, Gain (Loss) on Derivative, NetUSD | — | — | — | 0Source |
| General and Administrative ExpenseUSD | 17,604,000Source | 23,507,000Source | 22,574,000Source | 27,469,000Source |
| Income Tax Expense (Benefit)USD | 0Source | — | — | — |
| Inventory Write-downUSD | — | 4,904,000Source | 11,932,000Source | — |
| Net Income (Loss) Attributable to ParentUSD | -63,440,000Source | -86,222,000Source | -77,578,000Source | -77,969,000Source |
| Net Income (Loss) Available to Common Stockholders, BasicUSD | -63,440,000Source | -86,222,000Source | -77,578,000Source | -77,969,000Source |
| Nonoperating Income (Expense)USD | -6,033,000Source | 3,576,000Source | 8,327,000Source | 27,523,000Source |
| Operating ExpensesUSD | 29,735,000Source | 44,440,000Source | 72,950,000Source | 106,386,000Source |
| Operating Lease, ExpenseUSD | 1,700,000Source | 1,700,000Source | 1,500,000Source | 1,483,000Source |
| Other Nonoperating Income (Expense)USD | -807,000Source | -113,000Source | 773,000Source | -452,000Source |
| Proceeds from Stock Options ExercisedUSD | 83,000Source | 86,000Source | 237,000Source | — |
income statement · annual statements
| Line item | FY 2025 | FY 2024 | FY 2023 | FY 2022 |
|---|---|---|---|---|
| Total RevenueUSD | 1,583,000Source | 6,295,000Source | 7,540,000Source | 894,000Source |
| Cost of Goods and Services Sold | — | — | — | — |
| Operating Income (Loss)USD | -57,407,000Source | -89,798,000Source | -85,905,000Source | -105,492,000Source |
| Other Nonoperating Income (Expense)USD | -807,000Source | -113,000Source | 773,000Source | -452,000Source |
| Income Tax Expense (Benefit)USD | 0Source | — | — | — |
| Net Income (Loss) Attributable to ParentUSD | -63,440,000Source | -86,222,000Source | -77,578,000Source | -77,969,000Source |
| Earnings Per Share, BasicUSD per share | -4.34Source | -7.32Source | -0.48Source | -0.51Source |
| Earnings Per Share, DilutedUSD per share | -4.34Source | -7.32Source | -0.48Source | -0.51Source |
| Weighted Average Number of Shares Outstanding, Basicshares | 14,601,626Source | 11,773,596Source | 159,958,645Source | 152,676,155Source |
| Weighted Average Number of Shares Outstanding, Dilutedshares | 14,601,626Source | 11,773,596Source | 159,958,645Source | 152,676,155Source |
| Additional Financial Items | ||||
| Amortization of Intangible AssetsUSD | 300,000Source | 300,000Source | 67,000Source | — |
| Debt Securities, Trading, Gain (Loss)USD | — | — | — | -45,000Source |
| General and Administrative ExpenseUSD | 17,604,000Source | 23,507,000Source | 22,574,000Source | 27,469,000Source |
| Gross ProfitUSD | -27,672,000Source | -45,358,000Source | -12,955,000Source | — |
| Interest Income (Expense), NetUSD | — | 3,574,000Source | 5,262,000Source | 2,187,000Source |
| Interest Income (Expense), Nonoperating, NetUSD | -5,455,000Source | — | — | — |
| Net Income (Loss) Available to Common Stockholders, BasicUSD | -63,440,000Source | -86,222,000Source | -77,578,000Source | -77,969,000Source |
| Nonoperating Income (Expense)USD | -6,033,000Source | 3,576,000Source | 8,327,000Source | 27,523,000Source |
| Operating ExpensesUSD | 29,735,000Source | 44,440,000Source | 72,950,000Source | 106,386,000Source |
| Operating Lease, ExpenseUSD | 1,700,000Source | 1,700,000Source | 1,500,000Source | 1,483,000Source |
| Research and Development ExpenseUSD | 8,297,000Source | 11,772,000Source | 42,632,000Source | 71,979,000Source |
| Selling and Marketing ExpenseUSD | 3,834,000Source | 9,161,000Source | 7,744,000Source | 6,938,000Source |