ESS Achieves 'Awardable' Status Through Department of War's Tradewinds Solutions Marketplace
Business Wire (Wed, 2-Sep 8:31 AM ET)
Business Wire (Fri, 21-Aug 4:05 PM ET)
ESS Tech, Inc. Announces $3.2 Million Registered Direct Offering and Concurrent Private Placement
Business Wire (Thu, 20-Aug 1:11 PM ET)
ESS to Present at Sidoti Micro-Cap Virtual Conference
Business Wire (Tue, 18-Aug 8:51 AM ET)
ESS Tech, Inc. Announces Second Quarter 2026 Financial Results
Business Wire (Tue, 11-Aug 4:05 PM ET)
Business Wire (Mon, 10-Aug 8:31 AM ET)
ESS Tech Signs Letter of Intent for Proposed Business Combination
Business Wire (Thu, 6-Aug 8:31 AM ET)
Business Wire (Thu, 30-Jul 8:31 AM ET)
Business Wire (Wed, 29-Jul 8:31 AM ET)
ESS and Juniper Energy Sign Agreement for 500 MWh+ of Sodium-Ion Energy Storage Deployments
Business Wire (Wed, 22-Jul 8:31 AM ET)
ESS Tech Inc is a long-duration energy storage company specializing in iron flow battery technology. It develops and manufactures long-duration energy storage systems based on iron flow battery technology. The company's batteries use earth-abundant materials, including iron, salt, and water, and are designed for high cycle life and recyclability. It operates as a single business operating segment, which includes all activities related to the design, engineering, and manufacturing of the company's long duration energy storage products. The company's revenue is derived from the sale of its energy storage products and from service contracts.
Ess Tech trades on the NYSE stock market under the symbol GWH.
As of September 10, 2026, GWH stock price was flat at $0.38 with 228,958 million shares trading.
GWH has a beta of -0.61, meaning it tends to be less sensitive to market movements. GWH has a correlation of 0.00 to the broad based SPY ETF.
GWH has a market cap of $15.30 million. This is considered a Sub-Micro Cap stock.
Last quarter Ess Tech reported $73,000 in Revenue and -$.46 earnings per share. This fell short of revenue expectation by $-27,000 and missed earnings estimates by -$.02.
In the last 3 years, GWH traded as high as $31.65 and as low as $.31.
The top ETF exchange traded funds that GWH belongs to (by Net Assets): VTI, VXF, BUSM.
GWH has underperformed the market in the last year with a return of -72.1%, while the SPY ETF gained +17.9%. In the last 3 month period, GWH fell short of the market, returning -54.8%, while SPY returned +3.3%. However, in the most recent 2 weeks GWH has outperformed the stock market by returning +0.8%, while SPY returned -0.9%.
GWH support price is $.35 and resistance is $.41 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that GWH shares will trade within this expected range on the day.
