Alector, Inc. — Director's Dealing 2022

May 31, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alector, Inc. (ALEC)
CIK: 0001653087
Period of Report: 2022-05-27

Reporting Person: Romano Gary (Chief Medical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-05-27	Common Stock	A	92250	$0.00	Acquired	92250	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-05-27	Employee Stock Option (right to buy)	$9.20	A	369000	Acquired	2032-05-27	Common Stock (369000)	Direct

Footnotes

F1: The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on September 1, 2022.

F2: Shares subject to the option vest in 48 equal monthly installments beginning on June 23, 2022.