An institutional holder
Filed with the SEC on · accession 0001708269-26-000007
DYN filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 13, 2026. An institutional holder filed an amended Schedule 13G for Dyne Therapeutics, indicating a change in passive ownership position. The stock moved -0.8% by the first close after the filing.
An institutional holder filed an amended Schedule 13G for Dyne Therapeutics, indicating a change in passive ownership position. The filing text does not disclose specific ownership percentages or share counts.
Close before
$26.17
Aug 12, 2026
First close after
-0.80%
$25.96
5 trading days
+2.33%
$26.78
Since filing
-30.95%
$18.07
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Click hereDYN filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G for Dyne Therapeutics, indicating a change in passive ownership position. The filing text does not disclose specific ownership percentages or share counts.
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.
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).
DYN closed at $26.17 before the filing and $25.96 on Aug 13, 2026 (-0.80%). Five trading days later: $26.78 (+2.33%).
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