OSPR SCHEDULE 13G: SEC filing
Magnetar Financial LLC and affiliated reporting persons
Filed with the SEC on · accession 0001104659-26-126713
OSPR filed a SCHEDULE 13G (schedule 13g) with the SEC on Nov 13, 2026. Magnetar Financial LLC and affiliated reporting persons filed a Schedule 13G disclosing beneficial ownership of 2,000,000 Class A ordinary shares, or approximately 6.50%, of Osprey Acquisition Corp. III as of September 30, 2026. The stock moved +0.0% by the first close after the filing.
Summary of the filing
Magnetar Financial LLC and affiliated reporting persons filed a Schedule 13G disclosing beneficial ownership of 2,000,000 Class A ordinary shares, or approximately 6.50%, of Osprey Acquisition Corp. III as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).
Key details
How OSPR stock reacted
Close before
$9.82
Nov 12, 2026
First close after
+0.00%
$9.82
5 trading days
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Since filing
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Click hereFrequently asked questions
What did OSPR file with the SEC on Nov 13, 2026?
OSPR filed a SCHEDULE 13G (SEC filing). Magnetar Financial LLC and affiliated reporting persons filed a Schedule 13G disclosing beneficial ownership of 2,000,000 Class A ordinary shares, or approximately 6.50%, of Osprey Acquisition Corp. III as of September 30, 2026. The filing is a passive investment disclosure under Rule 13d-1(b).
How do I read a SCHEDULE 13G?
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 (schedule 13g): A report the company filed with the SEC (the US market regulator).
How did OSPR stock react to this filing?
OSPR closed at $9.82 before the filing and $9.82 on Nov 13, 2026 (+0.00%).
Other OSPR SEC filings
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