GIW SCHEDULE 13G/A: SEC filing
W. R. Berkley Corporation and its subsidiary Berkley Insurance Company
Filed with the SEC on · accession 0001628280-26-072394
GIW filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Nov 9, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +0.2% by the first close after the filing.
Summary of the filing
W. R. Berkley Corporation and its subsidiary Berkley Insurance Company filed an amended Schedule 13G indicating beneficial ownership of 1,588,000 Class A ordinary shares, or 6.2%, of GigCapital8 Corp. as of September 30, 2026.
Key details
How GIW stock reacted
Close before
$10.20
Nov 6, 2026
First close after
+0.20%
$10.22
5 trading days
—
Since filing
+0.10%
$10.21
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Click hereFrequently asked questions
What did GIW file with the SEC on Nov 9, 2026?
GIW filed a SCHEDULE 13G/A (SEC filing). W. R. Berkley Corporation and its subsidiary Berkley Insurance Company filed an amended Schedule 13G indicating beneficial ownership of 1,588,000 Class A ordinary shares, or 6.2%, of GigCapital8 Corp. as of September 30, 2026.
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).
How did GIW stock react to this filing?
GIW closed at $10.20 before the filing and $10.22 on Nov 9, 2026 (+0.20%).
Other GIW SEC filings
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