Marc Grasso - Jun 2, 2025 Form 4 Insider Report for Alector, Inc. (ALEC)

Role: Chief Financial Officer
Signature: /s/ Marc Grasso
Stock symbol: ALEC
Transactions as of: Jun 2, 2025
Transactions value $: -$22,068
Form type: 4
Date filed: 6/4/2025, 04:21 PM
Previous filing: Mar 5, 2025
Next filing: Jul 1, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
GRASSO MARC	Chief Financial Officer	C/O ALECTOR, INC., 131 OYSTER POINT BLVD., SUITE 600, SOUTH SAN FRANCISCO	/s/ Marc Grasso	2025-06-04	0001748894

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALEC	Common Stock	Sale	-$22.1K	-16.5K	-5.28%	$1.34	296K	Jun 2, 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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 $1.285 to $1.41. 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.