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Stocks · Technology · Miscellaneous Electrical Machinery, Equipment & Supplies

ESS Tech, Inc.

GWH Clue Score52
United States Fiscal year ends December CIK 0001819438
$0.16 +0.00% Close, 2 Oct 2026
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Price $0.16 −98.24% Close, 2 Oct 2026

Closing prices at the end of each trading day, from 4 Jan 2021. Not a live quote. Adjusted for share splits, so the line has no step at a split; dividends are not added back.

Revenue and profit

What the business sells, and what is left of it. Point at a year for the detail.
RevenueOperating incomeNet income
Fiscal year 2020Revenue0.0Operating income−17.4Net income−30.4EPS, diluted−0.52Fiscal year 2021Revenue0.0Operating income−60.6Net income−477.1EPS, diluted−5.73Fiscal year 2022Revenue0.9Operating income−105.5Net income−78.0EPS, diluted−0.51Fiscal year 2023Revenue7.5 +743.4%Operating income−85.9Net income−77.6EPS, diluted−7.27Fiscal year 2024Revenue6.3 −16.5%Operating income−89.8Net income−86.2EPS, diluted−7.32Fiscal year 2025Revenue1.6 −74.9%Operating income−57.4Net income−63.4EPS, diluted−4.34
FY2020FY2021FY2022FY2023FY2024FY2025
Revenue 0.0 0.0 0.9 7.5 6.3 1.6
Growth +743.4% −16.5% −74.9%
Operating income −17.4 −60.6 −105.5 −85.9 −89.8 −57.4
Net income −30.4 −477.1 −78.0 −77.6 −86.2 −63.4
Growth
EPS, diluted −0.52 −5.73 −0.51 −7.27 −7.32 −4.34

Margins

How much of each dollar of revenue it keeps. Point at a year for the detail.
Gross marginOperating marginNet margin
Fiscal year 2020Fiscal year 2021Fiscal year 2022Gross margin100.0%Operating margin−11,800.0%Net margin−8,721.4%Free cash flow margin−10,715.9%Fiscal year 2023Gross margin−171.8%Operating margin−1,139.3%Net margin−1,028.9%Free cash flow margin−804.9%Fiscal year 2024Gross margin−720.5%Operating margin−1,426.5%Net margin−1,369.7%Free cash flow margin−1,263.1%Fiscal year 2025Gross margin−1,748.1%Operating margin−3,626.5%Net margin−4,007.6%Free cash flow margin−3,390.5%
FY2020FY2021FY2022FY2023FY2024FY2025
Gross margin n/a n/a 100.0% −171.8% −720.5% −1,748.1%
Operating margin n/a n/a −11,800.0% −1,139.3% −1,426.5% −3,626.5%
Net margin n/a n/a −8,721.4% −1,028.9% −1,369.7% −4,007.6%
Free cash flow margin n/a n/a −10,715.9% −804.9% −1,263.1% −3,390.5%

Cash flow

The cash the business makes, what it reinvests, and what it hands back. Point at a year for the detail.
Operating cash flowCapital expenditureFree cash flow
Fiscal year 2020Operating cash flow−16.6Capital expenditure−0.5Free cash flow−17.1Fiscal year 2021Operating cash flow−51.8Capital expenditure−2.8Free cash flow−54.6Fiscal year 2022Operating cash flow−81.6Capital expenditure−14.2Free cash flow−95.8Fiscal year 2023Operating cash flow−54.9Capital expenditure−5.8Free cash flow−60.7Fiscal year 2024Operating cash flow−72.2Capital expenditure−7.3Free cash flow−79.5Fiscal year 2025Operating cash flow−50.3Capital expenditure−3.4Free cash flow−53.7
FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow −16.6 −51.8 −81.6 −54.9 −72.2 −50.3
Capital expenditure −0.5 −2.8 −14.2 −5.8 −7.3 −3.4
Free cash flow −17.1 −54.6 −95.8 −60.7 −79.5 −53.7
Growth

Balance sheet

What it holds against what it owes, at each year end. Point at a year for the detail.
CashTotal debt
Fiscal year 2020Cash4.9Total debt5.7Net cash (debt)−0.8Shareholders’ equity−27.9Fiscal year 2021Cash238.9Total debt3.8Net cash (debt)235.2Shareholders’ equity205.2Debt to equity0.02Fiscal year 2022Cash34.8Total debt1.9Net cash (debt)32.9Shareholders’ equity137.0Debt to equity0.01Fiscal year 2023Cash20.2Total debt0.0Net cash (debt)20.2Shareholders’ equity103.4Debt to equity0.00Fiscal year 2024Cash13.3Shareholders’ equity28.9Fiscal year 2025Cash14.5Shareholders’ equity8.6
FY2020FY2021FY2022FY2023FY2024FY2025
Cash 4.9 238.9 34.8 20.2 13.3 14.5
Total debt 5.7 3.8 1.9 0.0 n/a n/a
Net cash (debt) −0.8 235.2 32.9 20.2 n/a n/a
Shareholders’ equity −27.9 205.2 137.0 103.4 28.9 8.6
Debt to equity n/a 0.02 0.01 0.00 n/a n/a

In millions of USD, except per-share figures and ratios. Fiscal years, as last filed with the SEC.

Financial statements FY2025 · 10-K

Cash flow

In millions of USD, except per-share figures; shares in millions. Fiscal years ending December, each column as last filed with the SEC.
Click a line to chart it
Fiscal year FY2020 31 Dec 2020 FY2021 31 Dec 2021 FY2022† 31 Dec 2022 FY2023† 31 Dec 2023 FY2024 31 Dec 2024 FY2025 31 Dec 2025
Operations
−16.6 −51.8 −81.6 −54.9 −72.2 −50.3
Growth
n/a 0.6 1.5 6.5 4.7 5.7
Investment
−0.5 −2.8 −14.2 −5.8 −7.3 −3.4
calc −17.1 −54.6 −95.8 −60.7 −79.5 −53.7
Growth
calc −0.29 −0.66 −0.63 −5.69 −6.75 −3.68
−0.5 −2.8 −117.9 15.1 64.8 7.5
Financing
4.7 288.5 −4.1 25.7 0.2 43.5

† The diluted share count jumps at 2022 and 2023, so per-share figures either side of that column are not comparable. Usually a split, but the break lands on the restatement boundary rather than on the split date, because every column is that period’s latest filing.

Lines marked calc are worked out here from filed figures; point at one for how. Capital expenditure, dividends and buybacks are shown as money out, so negative.