ESS Tech, Inc.
Financial highlights
| Metric | FY December 31, 2025 | FY December 31, 2024 | FY December 31, 2023 | FY December 31, 2022 | FY December 31, 2021 |
|---|---|---|---|---|---|
| Revenue | $1.6M | $6.3M | $7.5M | $894,000 | $0 |
| Gross profit | -$27.7M | -$45.4M | -$13.0M | $894,000 | — |
| Operating income | -$57.4M | -$89.8M | -$85.9M | -$105.5M | -$60.6M |
| Operating expenses | $29.7M | $44.4M | $73.0M | $106.4M | $60.6M |
| Cost of revenue | $29.3M | $51.7M | $20.5M | $0 | — |
| Cash from operations | -$50.3M | -$72.2M | -$54.9M | -$81.6M | -$51.8M |
| Capital expenditure | $3.4M | $7.3M | $5.8M | $14.2M | $2.8M |
| Free cash flow | -$53.7M | -$79.5M | -$60.7M | -$95.8M | -$54.6M |
| Impairments | $1.7M | $0 | $0 | $0 | $0 |
| Total assets | $51.2M | $71.8M | $143.2M | $173.6M | $250.2M |
| Total liabilities | $42.6M | $42.9M | $39.9M | $36.6M | $45.0M |
| Total debt | — | — | — | $1.9M | $3.8M |
Shares outstanding 29.4M
Annual filing data through FY ended December 31, 2025; float as of July 2, 2026.