RTW INVESTMENTS, LP - 30 Sep 2025 SCHEDULE 13G Report for Alector, Inc. Common Stock, $0.0001 par value (ALEC)

Filing Manager: RTW INVESTMENTS, LP
Reporting Manager: RTW Investments, LP
Security: Alector, Inc. Common Stock, $0.0001 par value
Symbol: ALEC
Shares outstanding: 101,316,029 shares
Disclosed Ownership: 6,990,806 shares
Ownership: 6.9%
Form type: SCHEDULE 13G
Filing time: 14 Nov 2025, 08:18:22 UTC
Date of event: 30 Sep 2025
Next filing: 17 Feb 2026
SEC: View on sec.gov

Reporting Managers (2)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
RTW Investments, LP	6.9%	6,990,806	0	6,990,806	/s/ Roderick Wong, M.D.	Roderick Wong, M.D., Managing Partner
Roderick Wong	6.9%	6,990,806	0	6,990,806	s/ Roderick Wong, M.D.	Roderick Wong, M.D.