Company / Operating Cash Flow
ESS Tech, Inc. Operating Cash Flow History
FY2021-FY2025 · Annual data · Source: SEC filings
At a glance
Latest annual filing availableLatest Operating Cash Flow
-$50.3M
FY2025
5-year range
-$81.6M / -$50.3M
FY2021-FY2025
Trend
+30.4%
vs FY2024
Sector context
Sector data unavailable
Latest sector comparison
What the data says
Operating Cash Flow has fluctuated over the past 5 years, ranging from -$82M in FY2022 to -$50M in FY2025.
Based on SEC 10-K filings.
-$50M in FY2025.
Improved from -$55M to -$50M over the past 2 years.
Operating Cash Flow over time
Growth rates
- 3-Year CAGR
- -
- 5-Year CAGR
- -
- 10-Year CAGR
- -
Key checks
Key Insights
- In FY2025, operating cash flow increased 30.4% year-over-year.
- Lowest operating cash flow in the period was in FY2022.
Company context
Key Data Points
- Low Piotroski F-Score: 1/9 (multiple financial health concerns)
- Altman Z-Score -17.36 (distress zone, below 1.8 threshold)
- High earnings quality (cash-backed earnings)
Data sourced from SEC EDGAR filings. Not investment advice.
Annual data
| Year | Operating Cash FlowValue | YoY GrowthYoY |
|---|---|---|
| FY2025 | -$50.3M | +30.4% |
| FY2024 | -$72.2M | -31.6% |
| FY2023 | -$54.9M | +32.7% |
| FY2022 | -$81.6M | -57.4% |
| FY2021 | -$51.8M | - |
As of FY2025 · SEC Form 10-K · Last checked Jun 22, 2026