Risk factors

ESS Tech (GWH) risk factors

Item 1A of every ESS Tech, Inc. 10-K on file, and what changed from one year to the next.

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  • FY2025 10-K risk factors

    76 risks, 8 new, 15 dropped, 22 reworded since the prior year. Substantial doubt about continuing as a going concern dominates the risks, driven by low cash of $22.0 million at December 31, 2025.

    Filed Mar 05, 2026
  • FY2024 10-K risk factors

    83 risks. The company relies heavily on a going concern warning with $782.4 million in accumulated deficit as of December 31, 2024. Manufacturing scale-up depends on complex machinery and limited critical suppliers for iron flow batteries. Warranty insurance through Munich Re and customer adoption of long duration energy storage are essential.

    Filed Mar 31, 2025