VSTM 424B5: Secondary offering
Filed with the SEC on · accession 0001104659-26-115879
VSTM filed a 424B5 (prospectus (offering)) with the SEC on Oct 14, 2026. Verastem, Inc. priced an underwritten public offering of 30,937,500 shares of common stock at $8.00 per share, plus pre-funded warrants to purchase up to 312,503 shares, for total gross proceeds of approximately $250 million. The stock moved +3.5% by the first close after the filing.
Summary of the filing
Verastem, Inc. priced an underwritten public offering of 30,937,500 shares of common stock at $8.00 per share, plus pre-funded warrants to purchase up to 312,503 shares, for total gross proceeds of approximately $250 million. Net proceeds to the company are expected to be approximately $235 million before expenses.
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
+25.91%
$9.38
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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. priced an underwritten public offering of 30,937,500 shares of common stock at $8.00 per share, plus pre-funded warrants to purchase up to 312,503 shares, for total gross proceeds of approximately $250 million. Net proceeds to the company are expected to be approximately $235 million before expenses.
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%).
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