Grace Wong-Sarad - 02 Mar 2026 Form 4 Insider Report for Alector, Inc. (ALEC)

Role: Principal Accounting Officer
Signature: /s/Grace Wong-Sarad
Issuer symbol: ALEC
Transactions as of: 02 Mar 2026
Net transactions value: -$17,138
Form type: 4
Filing time: 03 Mar 2026, 16:05:22 UTC
Previous filing: 26 Feb 2026
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Wong-Sarad Grace	Principal Accounting Officer	C/O ALECTOR, INC., 131 OYSTER POINT BLVD, SUITE 600, SOUTH SAN FRANCISCO	/s/Grace Wong-Sarad	03 Mar 2026	0002074667

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALEC	Common Stock	Sale	$17,138	-8,071	-6.8%	$2.12	110,832	02 Mar 2026	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 $2.04 to $2.37. 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.