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GWH SCHEDULE 13G/A: SEC filing

Ayrton Capital LLC and related reporting persons

Filed with the SEC on · accession 0001493152-26-051261

GWH filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 12, 2026. A report the company filed with the SEC (the US market regulator).

Summary of the filing

Ayrton Capital LLC and related reporting persons filed an amended Schedule 13G disclosing beneficial ownership of 4,393,140 shares (9.99%) of ESS Tech, Inc., consisting of 727,103 shares and 3,666,037 shares issuable upon exercise of warrants subject to a 9.99% blocker.

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Key details

Shares of common stock beneficially owned$4.4M
Shares of common stock held directly$727K
Shares issuable upon exercise of warrants$3.7M
Reporting person / investment managerAyrton Capital LLC
Reporting person / beneficial ownerAlto Opportunity Master Fund, SPC - Segregated Master Portfolio B
IssuerESS Tech, Inc.
Managing member of ayrton capital llcWaqas Khatri

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Frequently asked questions

What did GWH file with the SEC on Nov 12, 2026?

GWH filed a SCHEDULE 13G/A (SEC filing). Ayrton Capital LLC and related reporting persons filed an amended Schedule 13G disclosing beneficial ownership of 4,393,140 shares (9.99%) of ESS Tech, Inc., consisting of 727,103 shares and 3,666,037 shares issuable upon exercise of warrants subject to a 9.99% blocker.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

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