AMBR SCHEDULE 13D/A: SEC filing
Yuao Wu, Amber Fort Limited, and Mars Wayfinder Limited
Filed with the SEC on · accession 0001104659-26-119366
AMBR filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Oct 28, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -3.6% by the first close after the filing.
Summary of the filing
Yuao Wu, Amber Fort Limited, and Mars Wayfinder Limited entered into a joint filing agreement to jointly submit a Schedule 13D regarding Class A ordinary shares of Amber International Holding Limited, superseding a prior agreement from May 29, 2026.
Key details
How AMBR stock reacted
Close before
$1.68
Oct 27, 2026
First close after
-3.57%
$1.62
5 trading days
+12.50%
$1.89
Since filing
-0.89%
$1.67
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Click hereFrequently asked questions
What did AMBR file with the SEC on Oct 28, 2026?
AMBR filed a SCHEDULE 13D/A (SEC filing). Yuao Wu, Amber Fort Limited, and Mars Wayfinder Limited entered into a joint filing agreement to jointly submit a Schedule 13D regarding Class A ordinary shares of Amber International Holding Limited, superseding a prior agreement from May 29, 2026.
How do I read a SCHEDULE 13D/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 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).
How did AMBR stock react to this filing?
AMBR closed at $1.68 before the filing and $1.62 on Oct 28, 2026 (-3.57%). Five trading days later: $1.89 (+12.50%).
Other AMBR SEC filings
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