ESS Tech, Inc.
For the period ended Dec 31, 2025. Filed Mar 5, 2026.
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FY2025 · Filed Mar 5, 2026
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Consolidated Statements of Operations and Comprehensive Loss
(in thousands, except share and per share data)
| Years Ended December 31, | ||
|---|---|---|
| 2025 | 2024 | |
| Revenue: | ||
| Revenue | $(796) | $5,712 |
| Revenue - related parties | 2,379 | 583 |
| Total revenue | 1,583 | 6,295 |
| Cost of revenue | 29,255 | 51,653 |
| Gross loss | (27,672) | (45,358) |
| Operating expenses | ||
| Research and development | 8,297 | 11,772 |
| Sales and marketing | 3,834 | 9,161 |
| General and administrative | 17,604 | 23,507 |
| Total operating expenses | 29,735 | 44,440 |
| Loss from operations | (57,407) | (89,798) |
| Other (expense) income, net | ||
| Interest (expense) income, net | (5,455) | 3,574 |
| Gain on revaluation of common stock warrant liabilities | 229 | 115 |
| Other expense, net | (807) | (113) |
| Total other (expense) income, net | (6,033) | 3,576 |
| Net loss and comprehensive loss to common stockholders | $(63,440) | $(86,222) |
| Net loss per share - basic and diluted | $(4.34) | $(7.32) |
| Weighted average shares used in per share calculation - basic and diluted | 14,601,626 | 11,773,596 |
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