ESS Tech, Inc. (GWH)
ESS Tech, Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.
ESS Tech, Inc. (GWH) is a Electrical Equipment & Parts company based in US with a market capitalization of $12.5M. Revenue declined 74.8% year-over-year and free cash flow was negative at -$53.7M. This page tracks GWH's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.
US · 240 employees · IPO Jan 4, 2021
Valuation
Valuation & price
$0.91as of May 17, 2026· -89.9% vs 52w high
—
P/E ratio
Latest-FY diluted EPS
1.45
P/B ratio
Market cap ÷ book equity
—
Dividend yield
Price — last 12 months
Fundamentals
Key fundamentals
$12.5M
Market cap
-74.8%
Revenue growth (YoY)
-2110.7%
Gross margin
-$53.7M
Free cash flow (USD)
-$18.2M
Net debt
Net cash position
-91.7%
Share dilution
1/5
Graham criteria passed
Defensive-investor screen
Industrials
Sector
Trajectory
Long-term trends
Revenue by year
2019 → 2025
Free cash flow by year
2019 → 2025
Gross margin by year
2022 → 2025
Value screen
Graham defensive-investor tests
1
Insider buys · 90 days
2
Insider sells · 90 days
Earnings
Last report: 10-Q filed May 7, 2026
Next expected: not yet scheduled
On the tape
Recent SEC & insider activity
- 8-K eventJul 1, 2026Filing
Delisting Notice
- 8-K eventJun 23, 2026Filing
Risk Factors Update
- 8-K eventJun 18, 2026Filing
Director Resignation
- 8-K eventJun 15, 2026Filing
Delisting Notice
- Insider buyJun 8, 2026Filing
Insider Buy $26KBuckley Drew P · Director, CEO · $25.7K
- 8-K eventMay 29, 2026Filing
Annual Meeting Results
- Insider sellMay 26, 2026Filing
Insider Sell $5KGoodman Kelly F. · SEE REMARKS · $4.8K
- Insider sellMay 26, 2026Filing
Insider Sell $3KSuhadolnik Kate Eileen · Chief Financial Officer · $3.4K
- 8-K eventMay 7, 2026Filing
Earnings Release
- Quarterly reportMay 7, 2026Filing
10-Q Filed
Questions
Frequently asked questions
What is ESS Tech, Inc.'s market cap?
ESS Tech, Inc. (GWH) has a market capitalization of $12.5M.
What is GWH's P/E ratio?
A meaningful P/E ratio is not available for GWH — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.
What is GWH's price-to-book (P/B) ratio?
GWH trades at 1.45 times book value per share.
Are insiders buying GWH stock?
Yes — SEC Form 4 filings show 1 open-market insider buy and 2 sells at ESS Tech, Inc. in the last 90 days.
Same arena
Related companies in Electrical Equipment & Parts
Timeline
Every filing, insider trade & earnings on a price-anchored timeline
Filing Analyzer
Search the actual 10-K / 10-Q text with AI research angles
News
Latest press coverage in one feed
Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.