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ESS Tech, Inc.

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Industrials · Electrical Equipment & Parts · United States · Updated May 10, 8:14pm
$0.78
Price
$9.8M
Market Cap
240
Employees
1.45
Beta
Drew Buckley
CEO
Business Description

ESS Tech, Inc., an energy storage company, designs and produces iron flow batteries for commercial and utility-scale energy storage applications worldwide. It offers energy storage products, which include Energy Warehouse, a behind-the-meter solution; and Energy Center, a front-of-the-meter solution. The company was founded in 2011 and is headquartered in Wilsonville, Oregon.

Business History
Price Overview
Last updated: May 11, 2026 1:44pm (8m ago)
$0.84
+0.06 (+7.35%)
Day Range
$0.79 – $0.90
52-Week Range
$0.57 – $13.87
50-Day MA
$1.21
200-Day MA
$2.03
Volume
1,344,285.00
Analyst Price Targets
Low $1.25
Consensus $3.79
High $9.00
(6 analysts)
Share Structure
Outstanding 12,596,234.00
Float 5,168,348.00
Free Float 41.0%
Moderate free float — 41.0% of shares trade freely, ~59% held by insiders/institutions
Reasonable but insiders still hold a significant stake. This can be positive (skin in the game) but may limit liquidity during sell-offs.
Small absolute float (5.2M shares) — even with a decent free float %, volume can be thin. Check average daily volume before sizing a position.
Price History (1 Year)
Revenue & Net Income Trend
The directional story — useful even when net income is negative.
Revenue
The top line — total sales before any costs or taxes are subtracted. A measure of how much business the company is doing.
Net Income
The bottom line — profit left after subtracting all expenses, interest, and taxes from revenue. Reflects accounting profitability, but includes non-cash items like depreciation, so it isn't the same as cash earned.
Operating Cash Flow
The real cash generated by the day-to-day business — selling products, paying suppliers, collecting from customers. Calculated from net income by adding back non-cash items and adjusting for timing (unpaid bills, unsold inventory). When OCF consistently lags net income, the reported profit may not be converting to real money.
Period Revenue Net Income Net Margin YoY/QoQ
Key Metrics
API Direct from provider CALC Derived from statements
P/E Ratio (Price per dollar of earnings)
CALC
Stock Price / EPS (Diluted)
-0.18
Stock Price: $0.78
EPS (Diluted): -4.34
P/B Ratio (Price vs net asset value)
API
Stock Price / Book Value Per Share
3.19
Stock Price: $0.78
Total Equity: $8.62M
Shares: 14,601,626
EV/EBITDA (Total value vs operating profit)
API
Enterprise Value / EBITDA
0.03
Market Cap: $9.83M
Total Debt: $3.84M
Cash: $14.48M
EBITDA: -$49.96M
Enterprise Value (Takeover price (cap + debt - cash))
API
Market Cap + Total Debt - Cash
$16.8M
Market Cap: $9.83M
Total Debt: $3.84M
Cash: $14.48M
Gross Margin (Revenue left after direct costs)
API
Gross Profit / Revenue
-2,110.7%
Gross Profit: -$33.41M
Revenue: $1.58M
Operating Margin (Revenue left after all operations)
API
Operating Income / Revenue
-3,518.6%
Operating Income: -$55.70M
Revenue: $1.58M
Net Margin (Revenue left as actual profit)
API
Net Income / Revenue
-4,007.6%
Net Income: -$63.44M
Revenue: $1.58M
ROE (Profit from shareholder equity)
API
Net Income / Total Equity
-1,251.7%
Net Income: -$63.44M
Total Equity: $8.62M
ROIC (Profit from all invested capital)
API
NOPAT / Invested Capital
-187.3%
Operating Income: -$55.70M
Tax Rate: 0.0%
Equity: $8.62M
Total Debt: $3.84M
Cash: $14.48M
Current Ratio (Can it pay short-term bills)
API
Current Assets / Current Liabilities
1.04
Current Assets: $26.25M
Current Liabilities: $25.29M
Debt/Equity (Leverage — debt vs equity)
CALC
Total Debt / Total Equity
0.45
Short-Term Debt: $1.78M
Long-Term Debt: $2.06M
Total Debt: $3.84M
Total Equity: $8.62M
Rev/Share (Top-line per share)
CALC
Revenue / Shares Outstanding
$0.11
Revenue: $1.58M
Shares: 14,601,626
Book Value/Share (Net assets per share)
CALC
(Total Assets - Total Liabilities) / Shares
$0.59
Total Equity: $8.62M
Shares: 14,601,626
FCF/Share (Real cash generated per share)
CALC
(Operating Cash Flow + CapEx) / Shares
$-3.68
Operating CF: -$50.28M
CapEx: -$3.39M
Shares: 14,601,626
CapEx is negative (outflow) — added to OCF to get FCF
Div Yield (Annual income from holding)
API
Last Annual Dividend / Stock Price
0.0%
Last Dividend: N/A
Stock Price: $0.78
Payout Ratio (Earnings paid out as dividends)
Dividends Paid / Net Income
—
Dividends Paid: N/A
Net Income: -$63.44M
Dividends paid not available in cash flow statement
Industry Benchmarks
Compares GWH against LLM-researched typical ranges for its industry. One research call per industry, cached indefinitely — every stock in the same industry reuses the same baseline.
Deep Analysis

Pre-flight intelligence scans the company first, then routes to the right analytical methods.

0 Company Classification — What type of company is this?
1 Industry Landscape — Where is the industry headed?
2 Company Momentum — Where is this company trending?
3 Forward Projection — 1Y & 2Y projected metrics (requires Layer 1 + 2)
4a DCF Valuation — Present value of future cash flows
4b Earnings Power Value — Floor value — worth with zero growth
4c Anchored PE — Industry PE adjusted for growth differential
4d Reverse DCF — What growth is the market pricing in?
4e Revenue-Based DCF — For growth/narrative companies (skip if mature earner)
4f Anchored P/S — Price-to-Sales peer comparison (skip if mature earner)
4g Scenario Analysis — Bull / Base / Bear (skip if mature earner)
4h Dividend Discount Model — For dividend/income stocks only
4i Book Value Analysis — For deep value / turnaround stocks only
4j Insider Activity — Are insiders buying or selling?
4f Cash Flow Quality — How trustworthy is the FCF?
4g Debt Maturity Risk — Can it handle its debt?
4h Macro Environment — Rates, market valuation, volatility
4i Sector Intelligence — How does this company compare within its sector?
4j Revenue Confidence — How reliable is the growth projection?
4k Sensitivity Analysis — How fragile is the fair value estimate?
4l Sector Demand Cycle — Is the sector in a boom, steady state, or contraction?
5 AI Investigation — Adaptive research engine (Claude)
5b Thesis Evaluation — What does the market believe? (narrative/platform stocks only)
6 Valuation Synthesis — Weighted verdict from all methods (requires Layer 4)
Income Statement (Annual)
Metric 2021 2022 2023 2024 2025
Revenue $0 $894,000 $7.5M $6.3M $1.6M
Cost of Revenue $572,000 $0 $20.5M $51.7M $35.0M
Gross Profit $-572,000 $894,000 -$13.0M -$45.4M -$33.4M
Operating Expenses $60.0M $106.4M $73.0M $44.4M $22.3M
Operating Income -$60.6M -$105.5M -$85.9M -$89.8M -$55.7M
Net Income -$477.1M -$78.0M -$77.6M -$86.2M -$63.4M
EBITDA -$474.7M -$104.0M -$79.4M -$85.1M -$50.0M
EPS $-58.53 $-7.66 $-0.48 $-7.32 $-4.34
EPS (Diluted) — — — — —
Balance Sheet (Annual)
Metric 2021 2022 2023 2024 2025
Cash & Equivalents $238.9M $34.8M $20.2M $13.3M $14.5M
Total Current Assets $245.5M $151.6M $118.1M $43.4M $26.2M
Total Assets $250.2M $173.6M $143.2M $71.8M $51.2M
Current Liabilities $13.6M $28.0M $19.8M $27.6M $25.3M
Long-Term Debt $1.9M $315,000 $0 $0 $2.1M
Total Liabilities $45.0M $36.6M $39.9M $42.9M $42.6M
Total Equity $205.2M $137.0M $103.4M $28.9M $8.6M
Retained Earnings -$540.6M -$618.6M -$696.2M -$782.4M -$845.8M
Cash Flow (Annual)
Metric 2021 2022 2023 2024 2025
Operating Cash Flow -$51.8M -$81.6M -$54.9M -$72.2M -$50.3M
Capital Expenditure -$2.8M -$14.2M -$5.8M -$7.3M -$3.4M
Free Cash Flow -$54.6M -$95.8M -$60.7M -$79.5M -$53.7M
Acquisitions (net) $0 $0 $0 $0 $0
Debt Repayment — — — — —
Dividends Paid — — — — —
Stock Buybacks $0 -$2.8M $-310,000 $-297,000 $-50,000
Net Change in Cash $233.8M -$203.6M -$14.2M -$7.3M $706,000
Analyst Estimates (Annual)
Metric 2026 2027 2028 2029
Revenue $2.1M
$2.1M – $2.1M
 $30.0M
$30.0M – $30.0M
 $171.2M
$171.2M – $171.2M
 $347.0M
$347.0M – $347.0M
EBITDA -$1.3M
-$1.3M – -$1.3M
 -$18.0M
-$18.0M – -$18.0M
 -$102.7M
-$102.7M – -$102.7M
 -$208.2M
-$208.2M – -$208.2M
Net Income -$14.6M
-$14.6M – -$14.6M
 -$9.9M
-$9.9M – -$9.9M
 -$38.4M
-$38.4M – -$38.4M
 -$1.0M
-$1.0M – -$1.0M
EPS — — — —
Growth Trends (YoY %)
Metric 2022 2023 2024 2025
Revenue Growth — +743.4% -16.5% -74.9%
Gross Profit Growth +256.3% -1,549.1% -250.1% +26.3%
Operating Income Growth -74.1% +18.6% -4.5% +38.0%
Net Income Growth +83.7% +0.5% -11.1% +26.4%
EBITDA Growth +78.1% +23.6% -7.2% +41.3%
Insider Trading (Recent)
Date Insider Type Shares Price Value
2026-02-20 Suhadolnik Kate Eileen S-Sale 741.00 $1.54 $1,141
2026-02-20 Goodman Kelly F. S-Sale 2,269.00 $1.54 $3,494
2026-02-13 Suhadolnik Kate Eileen A-Award 137,500.00 $0.00 $0
2026-02-13 Suhadolnik Kate Eileen A-Award 137,500.00 $1.44 $198,000
2026-02-13 Goodman Kelly F. A-Award 137,500.00 $0.00 $0
2026-02-13 Goodman Kelly F. A-Award 137,500.00 $1.44 $198,000
2026-01-28 Buckley Drew P A-Award 550,000.00 $1.68 $924,000
2026-01-01 Buckley Drew P 50,000.00 $2.00 $100,000
2025-11-20 Suhadolnik Kate Eileen F-InKind 1,299.00 $2.40 $3,118
2025-11-20 Goodman Kelly F. F-InKind 4,513.00 $2.40 $10,831
2025-10-13 NIGGLI MICHAEL R A-Award 13,513.00 $0.00 $0
2025-10-13 WELLMAN ALEXI A-Award 13,513.00 $0.00 $0
2025-10-13 Quarls Harry A-Award 13,513.00 $0.00 $0
2025-10-13 Nijhawan Sandeep A-Award 13,513.00 $0.00 $0
2025-10-13 Garabedian Raffi A-Award 13,513.00 $0.00 $0
2025-10-13 Hossfeld Rich A-Award 13,513.00 $0.00 $0
2025-10-13 Teamey Kyle A-Award 13,513.00 $0.00 $0
2025-08-18 Trivedi Jigish Dhirajlal A-Award 275,000.00 $0.00 $0
2025-08-20 Suhadolnik Kate Eileen F-InKind 1,232.00 $1.61 $1,984
2025-08-01 Suhadolnik Kate Eileen 0.00 $0.00 $0
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Data via Financial Modeling Prep · Cached for performance · fmp
v1.1.193 · 1946f027 · 2026-05-08 18:57:27