ATIIU SCHEDULE 13G/A: SEC filing
Filed with the SEC on · accession 0001346554-26-000069
ATIIU filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 14, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -0.7% by the first close after the filing.
Summary of the filing
Tenor Capital Management Company, L.P., Tenor Opportunity Master Fund, Ltd., and Robin Shah filed a Schedule 13G/A joint filing statement regarding their beneficial ownership of Archimedes Tech SPAC Partners II Co. shares.
Key details
How ATIIU stock reacted
Close before
$11.47
Aug 13, 2026
First close after
-0.74%
$11.39
5 trading days
-1.53%
$11.30
Since filing
-28.54%
$8.20
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Click hereFrequently asked questions
What did ATIIU file with the SEC on Aug 14, 2026?
ATIIU filed a SCHEDULE 13G/A (SEC filing). Tenor Capital Management Company, L.P., Tenor Opportunity Master Fund, Ltd., and Robin Shah filed a Schedule 13G/A joint filing statement regarding their beneficial ownership of Archimedes Tech SPAC Partners II Co. shares.
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 ATIIU stock react to this filing?
ATIIU closed at $11.47 before the filing and $11.39 on Aug 21, 2026 (-0.74%). Five trading days later: $11.30 (-1.53%).
Other ATIIU SEC filings
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