Proxy Results (Form 8-K)

Item 5.07 Submission of Matters to a Vote of Security Holders.

On June 17, 2026, Alector, Inc. ("Alector") held its 2026 annual meeting of stockholders (the "Annual Meeting"). At the Annual Meeting, Alector's stockholders voted on three proposals, each of which is described in more detail in the definitive proxy statement filed with the U.S. Securities and Exchange Commission on April 28, 2026. The following is a brief description of each matter voted on and the certified results, including the number of votes cast for and against each matter, and if applicable, the number of abstentions and broker non-votes with respect to each matter.

1. The Class II director nominees were elected to serve until Alector's 2029 annual meeting of stockholders and until their successors are elected and qualified. The voting results were as follows:

2. Stockholders ratified the appointment of Ernst & Young LLP as Alector's independent registered accounting firm for the fiscal year ending December 31, 2026. The voting results were as follows:

3. Stockholders approved, on a non-binding advisory basis, the compensation of Alector's named executive officers as disclosed in the proxy statement for the Annual Meeting, known as the Say-on-Pay vote. The voting results were as follows: