ESS Tech, Inc.
GWHNYSE
$0.88
↓ -0.6%Jul 17 close · end-of-day
Price
1Y↓ -41.4%
End-of-day closes; the latest point is the live 15-min-delayed price · split & dividend adjusted · chart by TradingView
Key statistics
Market Cap
$25.9M
Enterprise Value
$10.4M
P/E
—
P/S
23.3
P/B
2.7
EV/EBITDA
—
PEG
—
FCF Yield
-189.3%
Dividend Yield
—
Revenue (TTM)
$1.1M
Net Income (TTM)
$65.5M
Free Cash Flow (TTM)
-$49.1M
Gross Margin
-2388.8%
Operating Margin
-4769.9%
Net Margin
5894.2%
ROE
693.9%
ROIC
—
Debt / Equity
—
Net Cash
$15.5M
Return 1Y
-48.3%
Company profile
ESS Tech designs and produces iron flow batteries for commercial and utility-scale energy storage applications. It offers energy storage products, which include Energy Warehouse and Energy Center. The company was founded in 2011 and is headquartered in Wilsonville, Oregon.
- CEO
- Eric P. Dresselhuys
- Sector
- Manufacturing
- Industry
- Electrical Equipment
- Employees
- 270
- Headquarters
- Oregon
- Website
- essinc.com
Management & directors
- Buckley Drew PCEO
- Goodman Kelly F.SEE REMARKS
- Suhadolnik Kate EileenChief Financial Officer
- Trivedi Jigish DhirajlalCOO
Roles derived from SEC Form 4 filings.
Earnings
GWH Q1 2026 Earnings
Period ends 2026-03-31
MetricActualYoY
Revenue$128,000.00↓ -78.6%
Diluted EPS-$0.54↓ -64.0%
Actuals from SEC filings; YoY vs the year-ago quarter. Analyst estimates & surprise require a data feed (coming soon).
Financial statements
| Line item | FY2020 | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|---|
| Revenue | $0.00 | $0.00 | $894,000.00 | $7.5M | $6.3M | $1.6M |
| Gross profit | — | — | $894,000.00 | -$13.0M | -$45.4M | -$27.7M |
| Operating income | -$17.4M | -$60.6M | -$105.5M | -$85.9M | -$89.8M | -$57.4M |
| Net income | -$30.4M | -$477.1M | -$78.0M | -$77.6M | $86.2M | $63.4M |
| Diluted EPS | -$0.52 | -$5.73 | -$0.51 | -$7.27 | -$7.32 | -$4.34 |
| Operating cash flow | -$16.6M | -$51.8M | -$81.6M | -$54.9M | -$72.2M | -$50.3M |
| Free cash flow | -$17.1M | -$54.6M | -$95.8M | -$60.7M | -$79.5M | -$53.7M |
| Gross margin | — | — | 100.0% | -171.8% | -720.5% | -1748.1% |
| Operating margin | — | — | -11800.0% | -1139.3% | -1426.5% | -3626.5% |
| Net margin | — | — | -8721.4% | -1028.9% | 1369.7% | 4007.6% |
| Line item | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 |
|---|---|---|---|---|---|---|---|---|
| Revenue | $348,000.00 | $359,000.00 | $2.9M | $599,000.00 | $2.4M | $214,000.00 | -$1.6M | $128,000.00 |
| Gross profit | -$11.4M | -$12.4M | -$13.2M | -$8.1M | -$5.1M | -$4.7M | -$9.7M | -$7.0M |
| Operating income | -$23.1M | -$23.7M | -$23.5M | -$18.1M | -$11.6M | -$9.8M | -$17.9M | -$13.8M |
| Net income | -$21.9M | -$22.5M | $149.0M | -$18.0M | -$11.1M | -$10.4M | $102.9M | -$15.9M |
| Diluted EPS | -$1.87 | -$1.90 | -$1.98 | -$1.50 | -$0.90 | -$0.73 | -$1.21 | -$0.54 |
| Operating cash flow | -$15.2M | -$17.6M | -$20.5M | -$18.2M | -$12.4M | -$5.8M | -$13.9M | -$13.5M |
| Free cash flow | -$15.8M | -$19.9M | -$23.9M | -$19.0M | -$13.1M | -$6.3M | -$16.2M | -$14.4M |
| Gross margin | -3275.9% | -3449.0% | -462.7% | -1360.1% | -216.3% | -2207.9% | 610.8% | -5498.4% |
| Operating margin | -6645.1% | -6596.7% | -824.5% | -3029.4% | -490.1% | -4584.6% | 1126.8% | -10765.6% |
| Net margin | -6304.6% | -6265.5% | 5226.8% | -3009.3% | -468.9% | -4848.1% | -6479.7% | -12439.1% |
Company news
Jul 14, 2026
Analyst estimates
Coming soonConsensus revenue & EPS estimates and price targets will appear here once a forward-estimates data feed is connected.
Insider transactions
BoughtSoldMonthly insider $ volume · trailing 12 months
| Date | Insider | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| 2026-06-04 | Buckley Drew P· CEO | Buy | 25,000 | $1.03 | $25,660.00 | filing |
| 2026-05-29 | Quarls Harry | Award | 13,513 | $0.00 | $0.00 | filing |
| 2026-05-29 | Nijhawan Sandeep | Award | 13,513 | $0.00 | $0.00 | filing |
| 2026-05-29 | WELLMAN ALEXI | Award | 13,513 | $0.00 | $0.00 | filing |
| 2026-05-29 | Hossfeld Rich | Award | 13,513 | $0.00 | $0.00 | filing |
| 2026-05-29 | Garabedian Raffi | Award | 13,513 | $0.00 | $0.00 | filing |
| 2026-05-22 | Goodman Kelly F.· SEE REMARKS | Sale | 2,751 | $0.93 | $2,571.08 | filing |
| 2026-05-22 | Suhadolnik Kate Eileen· Chief Financial Officer | Sale | 1,922 | $0.93 | $1,796.30 | filing |
| 2026-05-21 | Goodman Kelly F.· SEE REMARKS | Sale | 2,482 | $0.92 | $2,278.72 | filing |
| 2026-05-21 | Suhadolnik Kate Eileen· Chief Financial Officer | Sale | 1,735 | $0.92 | $1,592.90 | filing |
| 2026-02-20 | Goodman Kelly F.· SEE REMARKS | Sale | 2,269 | $1.54 | $3,494.26 | filing |
| 2026-02-20 | Suhadolnik Kate Eileen· Chief Financial Officer | Sale | 741 | $1.54 | $1,141.14 | filing |
| 2026-02-13 | Goodman Kelly F.· SEE REMARKS | Award | 137,500 | $0.00 | $0.00 | filing |
| 2026-02-13 | Suhadolnik Kate Eileen· Chief Financial Officer | Award | 137,500 | $0.00 | $0.00 | filing |
| 2025-11-20 | Goodman Kelly F.· Interim CEO | Tax withholding | 4,513 | $2.40 | $10,831.20 | filing |
| 2025-11-20 | Suhadolnik Kate Eileen· Interim CFO | Tax withholding | 1,299 | $2.40 | $3,117.60 | filing |
| 2025-10-13 | NIGGLI MICHAEL R | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | WELLMAN ALEXI | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | Quarls Harry | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | Garabedian Raffi | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | Hossfeld Rich | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | Nijhawan Sandeep | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-10-13 | Teamey Kyle | Award | 13,513 | $0.00 | $0.00 | filing |
| 2025-08-20 | Goodman Kelly F.· Interim CEO | Tax withholding | 4,326 | $1.61 | $6,964.86 | filing |
| 2025-08-20 | Suhadolnik Kate Eileen· Interim CFO | Tax withholding | 1,232 | $1.61 | $1,983.52 | filing |
Showing the latest 25 transactions — full history in the linked SEC filings.
Fundamentals & filings from SEC EDGAR. Prices adjusted for splits & dividends. Not investment advice.