Ownership and insider activity for ESS Tech, Inc. (GWH): insider transactions, US Senate and House trading disclosures and shares outstanding. Track how corporate insiders and politicians are trading the stock.
ESS Tech, Inc. is a global energy storage enterprise focused on developing and manufacturing iron flow batteries for commercial and large-scale utility applications. The company's product portfolio includes the Energy Warehouse, designed for on-site (behind-the-meter) energy management, and the Energy Center, an offering for grid-level (front-of-the-meter) power solutions. Founded in 2011, the firm maintains its headquarters in Wilsonville, Oregon.
Price
| Price | $0.34 |
| Market Cap | $10M |
| Exchange | NYSE |
| Country | US |
Recent Insider Transactions
| Date | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 2026-08-21 | Suhadolnik Kate Eileen | S-Sale | 3,927 | $2K |
| 2026-08-21 | Goodman Kelly F. | S-Sale | 5,400 | $2K |
| 2026-06-04 | Buckley Drew P | P-Purchase | 25,000 | $26K |
| 2026-05-29 | WELLMAN ALEXI | A-Award | 13,513 | |
| 2026-05-29 | Quarls Harry | A-Award | 13,513 | |
| 2026-05-29 | Nijhawan Sandeep | A-Award | 13,513 | |
| 2026-05-29 | Hossfeld Rich | A-Award | 13,513 | |
| 2026-05-29 | Garabedian Raffi | A-Award | 13,513 | |
| 2026-05-21 | Suhadolnik Kate Eileen | S-Sale | 1,735 | $2K |
| 2026-05-22 | Suhadolnik Kate Eileen | S-Sale | 1,922 | $2K |
Balance Sheet (10y)
| Year | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|
| Cash & Equivalents | $18.3M | $4.9M | $238.9M | $34.8M | $20.2M | $13.3M | $14.5M |
| Short-term Investments | 0 | 0 | 0 | $105.0M | $87.9M | $18.3M | $7.6M |
| Receivables | 0 | 0 | $517000 | $5.0M | $2.2M | $2.4M | $1.4M |
| Inventory | 0 | 0 | 0 | $1.2M | $3.4M | $5.6M | $140000 |
| Total Current Assets | $18.9M | $6.9M | $245.5M | $151.6M | $118.1M | $43.4M | $26.2M |
| Property, Plant & Equipment | $1.7M | $1.8M | $4.5M | $21.0M | $18.4M | $22.1M | $21.0M |
| Goodwill | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Intangible Assets | 0 | 0 | 0 | $183000 | $4.9M | $4.7M | $2.7M |
| Total Assets | $21.1M | $9.0M | $250.2M | $173.6M | $143.2M | $71.8M | $51.2M |
| Accounts Payable | $697000 | $522000 | $1.6M | $3.0M | $2.8M | $8.1M | $3.0M |
| Short-term Debt | $365000 | $5.7M | $1.9M | $1.6M | 0 | 0 | 0 |
| Total Current Liabilities | $2.9M | $8.4M | $13.6M | $28.0M | $19.8M | $27.6M | $25.3M |
| Long-term Debt | $463000 | $19000 | $1.9M | $315000 | 0 | 0 | $2.1M |
| Total Liabilities | $5.6M | $10.7M | $45.0M | $36.6M | $39.9M | $42.9M | $42.6M |
| Retained Earnings | -$33.1M | -$63.5M | -$540.6M | -$618.6M | -$696.2M | -$782.4M | -$845.8M |
| Total Equity | $15.6M | -$1.6M | $205.2M | $137.0M | $103.4M | $28.9M | $8.6M |
| Total Debt | $828000 | $5.7M | $3.8M | $5.9M | $2.5M | $1.7M | $11.9M |
| Net Debt | -$17.5M | $796000 | -$235.2M | -$133.9M | -$105.5M | -$29.9M | -$10.1M |
| Working Capital | $16.1M | -$1.5M | $231.9M | $123.6M | $98.3M | $15.8M | $955000 |
Financial Health
| Debt / Equity | -1.11 |
| Current Ratio | 0.68 |
| Piotroski F-Score | 3 |
| Altman Z-Score | -26.29 |
Profitability
| Return on Equity | -1934.84% |
| Return on Invested Capital | -381.46% |
| Return on Assets | -202.71% |
| Gross Margin | 2941.97% |
| Operating Margin | 4665.34% |
| Net Margin | 5593.29% |
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