AOSL SCHEDULE 13G/A: SEC filing
An institutional holder
Filed with the SEC on · accession 0001628280-26-055403
AOSL filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 10, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -4.2% by the first close after the filing.
Summary of the filing
An institutional holder filed an amended Schedule 13G indicating a change in its passive ownership position in Alpha & Omega Semiconductor Ltd. The filing does not disclose a change in control intent or activist plans.
Key details
How AOSL stock reacted
Close before
$36.08
Aug 7, 2026
First close after
-4.21%
$34.56
5 trading days
-14.72%
$30.77
Since filing
-34.56%
$23.61
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Click hereFrequently asked questions
What did AOSL file with the SEC on Aug 10, 2026?
AOSL filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G indicating a change in its passive ownership position in Alpha & Omega Semiconductor Ltd. The filing does not disclose a change in control intent or activist plans.
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 AOSL stock react to this filing?
AOSL closed at $36.08 before the filing and $34.56 on Aug 10, 2026 (-4.21%). Five trading days later: $30.77 (-14.72%).
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