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| Period | Revenue | YoY | Gross margin | Operating income | Net income | YoY | EPS | Op. cash flow | Capex | Free cash flow | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Q2 2026 · Jun 30 | $73K | −96.9% | -10165.8% | −$15.1M | −$15.6M | — | -0.46 | −$8.9M | $502K | −$9.4M | Aug 11 |
| Q1 2026 · Mar 31 | $128K | −78.6% | -5498.4% | −$13.8M | −$15.9M | — | -0.54 | −$13.5M | $930K | −$14.4M | Aug 11 |
| Q4 2025 · Dec 31derived | −$1.6M | −155.7% | 610.8% | −$17.9M | −$24M | — | -1.26 | −$13.9M | $2.3M | −$16.2M | Mar 5 |
| Q3 2025 · Sep 30 | $214K | −40.4% | -2207.9% | −$9.8M | −$10.4M | — | -0.73 | −$5.8M | −$417K | −$5.4M | Nov 13 |
| Q2 2025 · Jun 30 | $2.4M | +577.6% | -216.3% | −$11.6M | −$11.1M | — | -0.90 | −$12.4M | $729K | −$13.1M | Aug 11 |
| Q1 2025 · Mar 31 | $599K | −78.1% | -1360.1% | −$18.1M | −$18M | — | -1.50 | −$18.2M | $762K | −$19M | Aug 11 |
| Q4 2024 · Dec 31derived | $2.9M | +1.9% | -462.7% | −$23.5M | −$23.5M | — | -1.97 | −$20.5M | $3.5M | −$23.9M | Mar 5 |
| Q3 2024 · Sep 30 | $359K | −76.8% | -3449.0% | −$23.7M | −$22.5M | — | -1.90 | −$17.6M | $2.3M | −$19.9M | Nov 13 |
| Q2 2024 · Jun 30 | $348K | — | -3275.9% | −$23.1M | −$21.9M | — | -1.87 | −$15.2M | $612K | −$15.8M | Nov 13 |
| Q1 2024 · Mar 31 | $2.7M | — | -306.4% | −$19.5M | −$18.3M | — | -1.57 | −$18.9M | $953K | −$19.9M | Nov 13 |
| Q4 2023 · Dec 31derived | $2.8M | — | -268.8% | −$19.1M | −$16.1M | — | -1.34 | −$16.1M | $1.6M | −$17.7M | Mar 31 |
| Q3 2023 · Sep 30 | $1.5M | — | -559.1% | −$18.1M | −$16.6M | — | -1.59 | −$1.2M | $769K | −$2M | Nov 14 |
| Year | Revenue | Gross margin | Operating income | Net income | Net margin | EPS | Op. cash flow | Capex | Free cash flow | Buybacks | Dividends paid |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FY2025 · to Dec 31 | $1.6M | -1748.1% | −$57.4M | −$63.4M | -4007.6% | -4.34 | −$50.3M | $3.4M | −$53.7M | — | — |
| FY2024 · to Dec 31 | $6.3M | -720.5% | −$89.8M | −$86.2M | -1369.7% | -7.32 | −$72.2M | $7.3M | −$79.5M | — | — |
| FY2023 · to Dec 31 | $7.5M | -171.8% | −$85.9M | −$77.6M | -1028.9% | -7.27 | −$54.9M | $5.8M | −$60.7M | — | — |
| FY2022 · to Dec 31 | $894K | 100.0% | −$105.5M | −$78M | -8721.4% | -0.51 | −$81.6M | $14.2M | −$95.8M | — | — |
| FY2021 · to Dec 31 | $0 | — | −$60.6M | −$477.1M | — | -5.73 | −$51.8M | $2.8M | −$54.6M | — | — |
| FY2020 · to Dec 31 | $0 | — | −$17.4M | −$30.4M | — | -0.52 | −$16.6M | $502K | −$17.1M | — | — |
Every number comes from ESS Tech, Inc.'s own XBRL-tagged filings with the SEC, not a data vendor. Quarters marked derived are the fiscal year minus the three reported quarters, the same way every data provider computes Q4. Restated figures replace originals as later filings arrive.