VSTM 424B5: Secondary offering
Verastem, Inc.
Filed with the SEC on · accession 0001104659-26-115875
VSTM filed a 424B5 (prospectus (offering)) with the SEC on Oct 14, 2026. The final terms of an offering of shares or bonds. The stock moved +3.5% by the first close after the filing.
Summary of the filing
Verastem, Inc. filed a preliminary prospectus supplement for an underwritten public offering of common stock and pre-funded warrants, with the last reported sale price of its common stock at $7.45 per share on October 13, 2026.
Key details
How VSTM stock reacted
Close before
$7.45
Oct 13, 2026
First close after
+3.49%
$7.71
5 trading days
+25.37%
$9.34
Since filing
+12.35%
$8.37
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Click hereFrequently asked questions
What did VSTM file with the SEC on Oct 14, 2026?
VSTM filed a 424B5 (Secondary offering). Verastem, Inc. filed a preliminary prospectus supplement for an underwritten public offering of common stock and pre-funded warrants, with the last reported sale price of its common stock at $7.45 per share on October 13, 2026.
What does a secondary offering mean for VSTM stock?
New shares dilute existing holders and are often sold at a discount to the market price.
How do I read a 424B5?
The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.
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 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.
How did VSTM stock react to this filing?
VSTM closed at $7.45 before the filing and $7.71 on Oct 14, 2026 (+3.49%). Five trading days later: $9.34 (+25.37%).
Other VSTM SEC filings
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