Alector, Inc. — Director's Dealing 2020

Jan 23, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alector, Inc. (ALEC)
CIK: 0001653087
Period of Report: 2020-01-21

Reporting Person: King Robert (Chief Development Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-01-21	Common Stock	S	14997	$22.01	Disposed	507320	Direct
2020-01-22	Common Stock	S	3	$22.01	Disposed	507317	Direct

Footnotes

F1: The sales reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan.

F2: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares purchased ranging from $22.00 to $22.12 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.