AMPX 8-K: SEC filing

Amprius Technologies

Filed with the SEC on Nov 10, 2026 · accession 0001899287-26-000069

AMPX filed a 8-K (current report) with the SEC on Nov 10, 2026. A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The stock moved -3.7% by the first close after the filing.

Summary of the filing

Amprius Technologies announced its business and financial results for the fiscal third quarter ended September 30, 2026, via an earnings release furnished as Exhibit 99.1 to its Form 8-K.

For details, click here →How to read a 8-K →

Key details

RegistrantAmprius Technologies, Inc.

Chief financial officerRicardo C. Rodriguez

How AMPX stock reacted

Close before

$9.52

Nov 9, 2026

First close after

-3.68%

$9.17

5 trading days

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Since filing

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Frequently asked questions

What did AMPX file with the SEC on Nov 10, 2026?

AMPX filed a 8-K (SEC filing). Amprius Technologies announced its business and financial results for the fiscal third quarter ended September 30, 2026, via an earnings release furnished as Exhibit 99.1 to its Form 8-K.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

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 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did AMPX stock react to this filing?

AMPX closed at $9.52 before the filing and $9.17 on Nov 10, 2026 (-3.68%).

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