NYSE: GWH

ESS Tech, Inc.

CIK 0001819438 · Misc Electrical Equipment

Micro Revenue $2M Assets $49M as of Jul 20, 2026

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424B5 Filed Jul 17, 2026

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8-K Filed Jul 17, 2026 · Period ending Jul 16, 2026

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8-K Filed Jul 1, 2026 · Period ending Jun 30, 2026

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8-K Filed Jun 23, 2026 · Period ending Jun 23, 2026

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8-K Filed Jun 18, 2026 · Period ending Jun 12, 2026

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8-K Filed Jun 15, 2026 · Period ending Jun 9, 2026

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10-Q Filed May 7, 2026 · Period ending Mar 31, 2026

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10-K Filed Mar 5, 2026 · Period ending Dec 31, 2025

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424B5 Filed Jan 30, 2026

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424B5 Filed Dec 11, 2025

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424B3 Filed Dec 11, 2025

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10-Q Filed Nov 13, 2025 · Period ending Sep 30, 2025

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424B3 Filed Jul 11, 2025

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10-K Filed Mar 31, 2025 · Period ending Dec 31, 2024

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424B3 Filed Dec 15, 2023

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S-1 Filed Mar 4, 2022

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S-1 Filed Dec 27, 2021

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10-Q/A Filed Dec 6, 2021 · Period ending Jun 30, 2021

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10-K/A Filed Dec 3, 2021 · Period ending Dec 31, 2020

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{# Shared IS / BS / CF block. Expects: financial_statements — dict of title → {periods, rows} financial_statements_meta — {source, unit_note} filing — Filing used to build the tables (EDGAR link) Optional: financials_heading — override h2 (default "Financial Statements") financials_subhead — override subhead HTML/text #}

Latest financial statements

From 10-Q filed May 7, 2026 (period ending Mar 31, 2026). SEC XBRL (companyfacts) — not generated by the model.

SEC XBRL

Consolidated Statements of Operations (Unaudited)

Description Q1 ended Mar 31, 2026 Q3 ended Sep 30, 2025
Revenue:
Total revenue / net sales 0.1 0.2
Cost of revenue / cost of sales 7.2 4.9
Gross profit (7.0) (4.7)
Operating expenses:
Sales and marketing 0.3 0.4
Research and development 2.6 1.0
General and administrative 3.9 3.7
Total operating expenses 6.7 5.1
Operating income (13.8) (9.8)
Other income/(expense), net (2.1) (0.6)
Income tax expense/(benefit)
Net income (15.9) (10.4)
Basic earnings per share (0.54) (0.73)
Diluted earnings per share (0.54) (0.73)

Consolidated Balance Sheets (Unaudited)

Description Mar 31, 2026 Dec 31, 2025
Current assets:
Cash and equivalents 15.5 14.5
Accounts receivable, net 0.04 0.01
Inventories 0.1 0.1
Prepaid expenses and other current assets 2.4 3.3
Other current assets 6.8 8.4
Total current assets 24.8 26.2
Property, plant and equipment, net 16.3 17.2
Operating lease right-of-use assets, net 3.3 3.8
Identifiable intangible assets, net 2.6 2.7
Deferred income taxes and other assets 0.6 0.6
TOTAL ASSETS 48.6 51.2
Current liabilities:
Accounts payable 1.3 3.0
Current portion of operating lease liabilities 1.9 1.8
Deferred revenue, current 0.3 0.4
Other current liabilities 19.5 20.1
Total current liabilities 23.0 25.3
Operating lease liabilities 1.6 2.1
Deferred income taxes and other liabilities 0.03 0.04
Other long-term liabilities 14.5 15.2
Total liabilities 39.1 42.6
Shareholders' equity:
Common stock
Capital in excess of stated value 871.2 854.4
Retained earnings (deficit) (861.7) (845.8)
Total shareholders' equity 9.4 8.6
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY 48.6 51.2

Consolidated Statements of Cash Flows (Unaudited)

Description Q1 ended Mar 31, 2026 Nine months ended Sep 30, 2025
Operating Activities:
Net cash from operating activities (13.5) (36.4)
Investing Activities:
Net cash from investing activities 0.7 17.3
Financing Activities:
Net cash from financing activities 14.0 8.9
Net increase/(decrease) in cash 1.3 (10.2)

Amounts in millions USD; EPS as reported. Line labels are presentation-friendly mappings of filer XBRL tags — not a re-audit of the full statements. Use EDGAR for interactive notes and detail. Interactive statements & notes on EDGAR ↗