QUMS SCHEDULE 13G/A: SEC filing
Mizuho Financial Group
Filed with the SEC on · accession 0001104659-26-125765
QUMS 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
Mizuho Financial Group filed an amended Schedule 13G reporting beneficial ownership of 953,057 common shares (8.4%) of Quantumsphere Acquisition Corp as of September 30, 2026, held indirectly through its subsidiary Mizuho Securities USA LLC.
Key details
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What did QUMS file with the SEC on Nov 12, 2026?
QUMS filed a SCHEDULE 13G/A (SEC filing). Mizuho Financial Group filed an amended Schedule 13G reporting beneficial ownership of 953,057 common shares (8.4%) of Quantumsphere Acquisition Corp as of September 30, 2026, held indirectly through its subsidiary Mizuho Securities USA LLC.
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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