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10-Q

Quarterly Report

ESS Tech, Inc. GWH GWH-WT

0001819438-26-000034

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Filed
May 7, 2026 12:00 AM ET
Period of report

On SEC.gov

Financials in this filing

Metric Period Value
Shares Outstanding Q1 2026 · May 4, 2026 29.39M sh
Shares Diluted Q1 2026 · Mar 31, 2026 29.29M sh
Shares Diluted Q1 2026 · Mar 31, 2025 12.03M sh
Capex Q1 2026 · Mar 31, 2026 $930K
Capex Q1 2026 · Mar 31, 2025 $762K
Operating Cash Flow Q1 2026 · Mar 31, 2026 −$13.46M
Operating Cash Flow Q1 2026 · Mar 31, 2025 −$18.24M
Cash And Equivalents Q1 2026 · Mar 31, 2026 $15.49M
Cash And Equivalents Q1 2026 · Dec 31, 2025 $14.48M
Cash And Equivalents Q1 2026 · Mar 31, 2025 $8.42M
Stockholders Equity Q1 2026 · Mar 31, 2026 $9.45M
Stockholders Equity Q1 2026 · Dec 31, 2025 $8.62M
Stockholders Equity Q1 2026 · Mar 31, 2025 $12.08M
Stockholders Equity Q1 2026 · Dec 31, 2024 $28.88M
Current Liabilities Q1 2026 · Mar 31, 2026 $23.01M
Current Liabilities Q1 2026 · Dec 31, 2025 $25.29M
Total Liabilities Q1 2026 · Mar 31, 2026 $39.13M
Total Liabilities Q1 2026 · Dec 31, 2025 $42.55M
Current Assets Q1 2026 · Mar 31, 2026 $24.77M
Current Assets Q1 2026 · Dec 31, 2025 $26.25M
Total Assets Q1 2026 · Mar 31, 2026 $48.57M
Total Assets Q1 2026 · Dec 31, 2025 $51.17M
Eps Diluted Q1 2026 · Mar 31, 2026 −$0.54
Eps Diluted Q1 2026 · Mar 31, 2025 −$1.50
Eps Basic Q1 2026 · Mar 31, 2026 −$0.54
Eps Basic Q1 2026 · Mar 31, 2025 −$1.50
Sga Expense Q1 2026 · Mar 31, 2026 $3.86M
Sga Expense Q1 2026 · Mar 31, 2025 $5.57M
Rd Expense Q1 2026 · Mar 31, 2026 $2.63M
Rd Expense Q1 2026 · Mar 31, 2025 $2.48M
Net Income Q1 2026 · Mar 31, 2026 −$15.92M
Net Income Q1 2026 · Mar 31, 2025 −$18.03M
Operating Income Q1 2026 · Mar 31, 2026 −$13.78M
Operating Income Q1 2026 · Mar 31, 2025 −$18.15M
Gross Profit Q1 2026 · Mar 31, 2026 −$7.04M
Gross Profit Q1 2026 · Mar 31, 2025 −$8.15M
Cost Of Revenue Q1 2026 · Mar 31, 2026 $7.17M
Cost Of Revenue Q1 2026 · Mar 31, 2025 $8.75M
Revenue Q1 2026 · Mar 31, 2026 $128K
Revenue Q1 2026 · Mar 31, 2025 $599K