ESS Tech, Inc. Faces NYSE Delisting After Missing Listing Standards

What Happened ESS Tech, Inc. (ticker: GWH) filed an 8-K on Sept. 30, 2026 reporting that on Sept. 24, 2026 the NYSE notified the company that NYSE Regulation had commenced proceedings to delist the company’s common stock. The staff determined ESS Tech did not regain compliance with Section 802.01B of the NYSE Listed Company Manual by the end of the maximum plan period, so the stock was deemed no longer suitable for listing under Section 802.02.

Key Details

• NYSE rule at issue: Section 802.01B (requires either ≥ $50 million stockholders’ equity or ≥ $50 million total market capitalization on a 30‑trading‑day average).
• Notice date: September 24, 2026; Form 8‑K filed September 30, 2026.
• Appeal rights: ESS Tech has 10 business days from receipt of the notice to request a review by the NYSE Committee; the company intends to request a review and appeal the determination.
• Possible outcomes: If the company doesn’t seek review, withdraws appeal, or the Committee upholds the staff’s decision, the NYSE will announce a trading suspension date and then apply to the SEC to delist the shares.

Why It Matters A delisting determination can lead to suspension of trading on the NYSE and a subsequent SEC delisting application, which may materially affect liquidity, price discovery and where the shares trade (e.g., OTC markets). ESS Tech’s ability to avoid suspension depends on a successful review or other developments — the company says it intends to appeal but notes there is no assurance the appeal will succeed. The filing also includes standard forward‑looking statement cautions and points investors to the company’s SEC filings for additional risk details.