ALEC 424B5: Secondary offering
Filed with the SEC on · accession 0001193125-26-424215
ALEC filed a 424B5 (prospectus (offering)) with the SEC on Oct 16, 2026. Alector, Inc. is offering 36,600,000 shares of common stock at $2.05 per share, raising approximately $75.03 million in gross proceeds ($70.53 million net of underwriting discounts). The stock moved -3.7% by the first close after the filing.
Summary of the filing
Alector, Inc. is offering 36,600,000 shares of common stock at $2.05 per share, raising approximately $75.03 million in gross proceeds ($70.53 million net of underwriting discounts). The offering is expected to close on or about October 19, 2026.
Key details
How ALEC stock reacted
Close before
$1.91
Oct 15, 2026
First close after
-3.66%
$1.84
5 trading days
-4.19%
$1.83
Since filing
+9.42%
$2.09
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Click hereFrequently asked questions
What did ALEC file with the SEC on Oct 16, 2026?
ALEC filed a 424B5 (Secondary offering). Alector, Inc. is offering 36,600,000 shares of common stock at $2.05 per share, raising approximately $75.03 million in gross proceeds ($70.53 million net of underwriting discounts). The offering is expected to close on or about October 19, 2026.
What does a secondary offering mean for ALEC 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 ALEC stock react to this filing?
ALEC closed at $1.91 before the filing and $1.84 on Oct 16, 2026 (-3.66%). Five trading days later: $1.83 (-4.19%).
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