Filing Flows › ESS Tech (GWH) › Q1 2026
ESS Tech (GWH) Q1 2026 earnings results (first quarter 2026)
10-Q filed May 7, 2026
ESS Tech (GWH) reported revenue of $128K for the first quarter 2026 (Q1 2026), -79% from a year earlier.
ESS Tech, Q1 2026: revenue $128K (-79% year over year), net loss $15.9M, operating cash flow −$13.5M. The chart follows the revenue to costs, profit and cash.
| Q1 2026 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $128K | — | -79% |
| Operating profit | −$13.8M | — | — |
| Net earnings | −$15.9M | — | — |
| Operating cash flow | −$13.5M | — | — |
What changed
Revenue was $128K in Q1 2026, down 79% year over year.
Operating costs exceeded revenue by $13.8M, an operating margin of -10765.6%. Total costs fell 26% while revenue fell 79%. The quarter ended with a net loss of $15.9M.
Operating cash flow was −$13.5M. Non-cash charges added back $2.4M of depreciation and amortization and $1.1M of share-based compensation. Working capital and other items used $1.0M. Capital expenditures of $930K exceeded it, leaving free cash flow of −$14.4M.
Questions
What was ESS Tech's revenue in the first quarter 2026?
ESS Tech (GWH) reported revenue of $128K for the first quarter 2026 (Q1 2026), -79% from a year earlier.
Source: ESS Tech 10-Q on SEC EDGAR.