Alector, Inc. — Director's Dealing 2025

Dec 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alector, Inc. (ALEC)
CIK: 0001653087
Period of Report: 2025-12-03

Reporting Person: Kenkare-Mitra Sara (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-03	Common Stock	S	41687	$1.1196	Disposed	501652	Direct

Footnotes

F1: The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units, or RSUs.

F2: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $1.095 to $1.14. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff, the issuer, or any security holder of the issuer upon request.