COLL SCHEDULE 13G/A: SEC filing
A Schedule 13G/A amendment was
Filed with the SEC on · accession 0000769734-26-000057
COLL filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Oct 29, 2026. A Schedule 13G/A amendment was filed regarding Collegium Pharmaceutical, Inc. (COLL), indicating a change in a passive institutional holder's ownership position. The stock moved +3.4% by the first close after the filing.
Summary of the filing
A Schedule 13G/A amendment was filed regarding Collegium Pharmaceutical, Inc. (COLL), indicating a change in a passive institutional holder's ownership position. The filing text provided does not disclose specific ownership percentages or share counts.
Key details
How COLL stock reacted
Close before
$23.23
Oct 28, 2026
First close after
+3.44%
$24.03
5 trading days
+1.89%
$23.67
Since filing
+8.31%
$25.16
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Click hereFrequently asked questions
What did COLL file with the SEC on Oct 29, 2026?
COLL filed a SCHEDULE 13G/A (SEC filing). A Schedule 13G/A amendment was filed regarding Collegium Pharmaceutical, Inc. (COLL), indicating a change in a passive institutional holder's ownership position. The filing text provided does not disclose specific ownership percentages or share counts.
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 COLL stock react to this filing?
COLL closed at $23.23 before the filing and $24.03 on Oct 29, 2026 (+3.44%). Five trading days later: $23.67 (+1.89%).
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