BlackRock, Inc. Amends Schedule 13G/A for Alector, Inc.

BlackRock, Inc. has filed an amendment to its Schedule 13G/A for Alector, Inc., reporting ownership of 5,201,092 shares of common stock, representing 5.1% of the total outstanding shares. The filing indicates that BlackRock, Inc. has sole voting power over 5,083,047 shares and sole dispositive power over all 5,201,092 shares. The filing also notes that various persons have the right to receive dividends or direct the proceeds from the sale of the common stock, but no single person's interest exceeds 5% of the total outstanding shares. The amendment was filed on October 17, 2025, and includes certifications that the securities were acquired and are held in the ordinary course of business, not for the purpose of influencing control of the issuer.