ESS Tech, Inc.

For the period ended Sep 30, 2025. Filed Nov 13, 2025.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 13, 2025

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Contents

Condensed Statements of Operations and Comprehensive Loss

(in thousands, except share and per share data)

	Three Months Ended September 30,		Nine Months Ended September 30,
	2025	2024	2025	2024
Revenue:
Revenue	$189	$355	$816	$2,911
Revenue - related parties	25	4	2,355	534
Total revenue	214	359	3,171	3,445
Cost of revenue	4,939	12,741	21,144	35,615
Gross profit (loss)	(4,725)	(12,382)	(17,973)	(32,170)
Operating expenses
Research and development	1,027	2,684	4,929	9,066
Sales and marketing	360	2,529	3,614	7,274
General and administrative	3,699	6,087	12,998	17,791
Total operating expenses	5,086	11,300	21,541	34,131
Loss from operations	(9,811)	(23,682)	(39,514)	(66,301)
Other (expense) income, net
Interest (expense) income, net	(456)	807	(210)	3,097
Gain on revaluation of common stock warrant liabilities	—	343	344	459
Other (expense) income, net	(108)	39	(77)	2
Total other (expense) income, net	(564)	1,189	57	3,558
Net loss and comprehensive loss to common stockholders	$(10,375)	$(22,493)	$(39,457)	$(62,743)
Net loss per share - basic and diluted	$(0.73)	$(1.90)	$(3.08)	$(5.35)
Weighted-average shares used in per share calculation - basic and diluted	14,154,333	11,814,580	12,822,333	11,722,378

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.