Alector, Inc. — Director's Dealing 2020

May 13, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alector, Inc. (ALEC)
CIK: 0001653087
Period of Report: 2020-05-11

Reporting Person: Wehner David M. (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-11	Stock Option (right to buy)	$29.09	A	19274	Acquired	2030-05-11	Common Stock (19274)	Direct

Footnotes

F1: The shares subject to the option vest in 12 equal monthly installments beginning on June 11, 2020 and vest in full on the earlier of the date of the Issuer's next annual meeting of stockholders or May 11, 2021.