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Price per share at the end of the period divided by the last reported earnings

Free Cash Flow

ESS Tech, Inc., an energy storage company, designs and produces iron flow batteries for commercial and utility-scale energy storage applications worldwide. It offers energy storage products, which include Energy Warehouse, a behind-the-meter solution; and Energy Center, a front-of-the-meter solution. The company was founded in 2011 and is headquartered in Wilsonville, Oregon.

ESS Tech, Inc.

The significance of a company's longevity in the market

Years since IPO

Evaluation of recent trends and improvements in the company's revenue

Revenue Growth

Assessment of recent increases in earnings per share, indicating profitability

EPS Growth

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FCF Growth

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Debt

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS INTRODUCES BRIDGE, A MODULAR SODIUM-ION BATTERY ENERGY STORAGE SYSTEM FOR GRID-SCALE, DATA CENTER, AND COMMERCIAL APPLICATIONS.

ESS INTRODUCES BRIDGE, A MODULAR SODIUM-ION BATTERY ENERGY STORAGE SYSTEM FOR GRID-SCALE, DATA CENTER, AND COMMERCIAL APPLICATIONS

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS ADDED TO RUSSELL MICROCAP INDEX.

ESS ADDED TO RUSSELL MICROCAP INDEX

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS TO ACCELERATE SODIUM-ION BATTERY ENERGY STORAGE SYSTEM DEVELOPMENT FOLLOWING SURGING CUSTOMER INTEREST.

ESS TO ACCELERATE SODIUM-ION BATTERY ENERGY STORAGE SYSTEM DEVELOPMENT FOLLOWING SURGING CUSTOMER INTEREST

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS TO ATTEND SIDOTI MICRO-CAP VIRTUAL CONFERENCE ON MAY 20, 2026.

ESS TO ATTEND SIDOTI MICRO-CAP VIRTUAL CONFERENCE ON MAY 20, 2026

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS TECH, INC. ANNOUNCES FIRST QUARTER 2026 FINANCIAL RESULTS.

ESS TECH, INC. ANNOUNCES FIRST QUARTER 2026 FINANCIAL RESULTS

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS HIGHLIGHTS THIRD-PARTY UTILITY VALIDATING IRON FLOW BATTERY TECHNOLOGY.

ESS HIGHLIGHTS THIRD-PARTY UTILITY VALIDATING IRON FLOW BATTERY TECHNOLOGY

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS ANNOUNCES SUCCESSFUL COMMISSIONING OF LONG-DURATION IRON FLOW BATTERY SYSTEMS AT TURLOCK IRRIGATION DISTRICT SOLAR-OVER-CANAL PROJECT.

ESS ANNOUNCES SUCCESSFUL COMMISSIONING OF LONG-DURATION IRON FLOW BATTERY SYSTEMS AT TURLOCK IRRIGATION DISTRICT SOLAR-OVER-CANAL PROJECT

WILSONVILLE, ORE. & MALDEN, MASS.--(BUSINESS WIRE)--ESS TECH, INC. (NYSE: GWH) ("ESS" OR THE "COMPANY"), A LEADING MANUFACTURER OF SUSTAINABLE, LONGDURATION ENERGY STORAGE SYSTEMS (LDES), TODAY ANNOUNCED THE SIGNING OF A LETTER OF INTENT FOR A STRATEGIC PARTNERSHIP WITH ALSYM ENERGY, A PIONEER IN NON-FLAMMABLE, HIGH-PERFORMANCE SODIUM-ION BATTERIES, TO ADD 8.5 GWH OF SODIUMION CELLS AND MODULES TO ITS PORTFOLIO. THIS NEXTGENERATION BATTERY SOLUTION IS DESIGNED TO ADDRESS USE CASES TRADITIO.

ESS PARTNERS WITH ALSYM ENERGY TO DELIVER 8.5 GWH OF NON-LITHIUM BATTERY ENERGY STORAGE SOLUTIONS

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS TO HOST FIRST QUARTER 2026 FINANCIAL RESULTS CONFERENCE CALL ON THURSDAY, MAY 7, 2026 AT 5:00 P.M. EASTERN TIME.

ESS TO HOST FIRST QUARTER 2026 FINANCIAL RESULTS CONFERENCE CALL ON THURSDAY, MAY 7, 2026 AT 5:00 P.M. EASTERN TIME

WILSONVILLE, ORE.--(BUSINESS WIRE)--ESS ENGAGES MZ GROUP TO LEAD STRATEGIC INVESTOR RELATIONS AND SHAREHOLDER COMMUNICATIONS PROGRAM.

ESS Tech, Inc.

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ESS Tech, Inc.

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