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GWH EFFECT: SEC filing

ESS Tech, Inc.

Filed with the SEC on · accession 9999999995-26-002983

GWH filed a EFFECT (effect) with the SEC on Sep 16, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +0.9% by the first close after the filing.

Summary of the filing

ESS Tech, Inc. filed an EFFECT notice with the SEC, indicating that a previously filed registration statement has become effective.

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Key details

FilerESS Tech, Inc.

How GWH stock reacted

Close before

$0.33

Sep 15, 2026

First close after

+0.93%

$0.34

5 trading days

+18.24%

$0.39

Since filing

-53.06%

$0.16

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Frequently asked questions

What did GWH file with the SEC on Sep 16, 2026?

GWH filed a EFFECT (SEC filing). ESS Tech, Inc. filed an EFFECT notice with the SEC, indicating that a previously filed registration statement has become effective.

How do I read a EFFECT?

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 EFFECT (effect): A report the company filed with the SEC (the US market regulator).

How did GWH stock react to this filing?

GWH closed at $0.33 before the filing and $0.34 on Sep 16, 2026 (+0.93%). Five trading days later: $0.39 (+18.24%).

Other GWH SEC filings

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