Alector Prices $75.03 Million Stock Offering at $2.05 a Share

Alector priced an underwritten offering of 36,600,000 shares of common stock at $2.05 per share. Expected gross proceeds total $75.03 million before underwriting discounts, commissions and offering expenses. The offering price represents a premium of approximately 7.3% to the October 15, 2026, closing price. Closing is expected on or about October 19, 2026, subject to customary conditions. Net proceeds are intended for general corporate purposes, including product development, working capital and potential strategic transactions. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Alector Inc. published the original content used to generate this news brief via (Ref. ID: 202610160730PRIMZONEFULLFEED9847345) on October 16, 2026, and is solely responsible for the information contained therein. (C)