ESS Tech, Inc. (GWH) Stock

ESS Tech, Inc. (GWH) is a Industrials stock trading at $0.79 (as of 2026-06-18), with a market capitalization of $19.46M and a trailing P/E of -0.2. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

ESS Tech, Inc. designs and manufactures iron flow battery energy storage systems for commercial and utility-scale applications. Its offerings include behind-the-meter Energy Warehouse and front-of-the-meter Energy Center, serving customers with energy storage needs worldwide.

Valuation — source: SEC EDGAR (first-party)

Price	$0.79
Market Cap	$19.46M
P/E Ratio	-0.2
EV / EBITDA	-0.1
Price / Book	2.46
Price / Sales	20.93
DCF Value (model)	$-33.04
DCF Upside vs Price	-4289.2%

Profitability & Growth — source: SEC EDGAR

Revenue (TTM)	$1.58M
Net Margin	-4007.6%
Return on Equity	-649.3%
Current Ratio	1.08
Revenue Growth (YoY)	-74.9%
EPS Growth (YoY)	-40.7%
FCF Growth (YoY)	-32.5%

Financial Health — source: SEC EDGAR

Altman Z-Score

-26.49 (distress)

Valuation vs Sector & Industry

Stock P/E	-0.2
Sector P/E (Industrials)	29.1
Industry P/E (Electrical Equipment)	35.4
vs Sector	-100.8%
vs Industry	-100.7%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures

Top Institutional Holder	SOFTBANK GROUP CORP. ($2.80M)
Institutional Holders Tracked	10

Company

Sector	Industrials
Industry	Electrical Equipment
CEO	Drew Buckley
Employees	240
Country	US
IPO Date	2021-01-04

Related Companies (Business model: Industrials / Capital Goods (Heavy Machinery + Diversified Industrials); 8 closest by market cap; US-domiciled)

• Franklin Wireless Corp. (FKWL)
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Data as of 2026-06-18.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.