[Form 3] Alector, Inc. Initial Statement of Beneficial Ownership

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Wong-Sarad Grace

(Last) (First) (Middle)

C/O ALECTOR, INC.

131 OYSTER POINT BLVD, SUITE 600

(Street)

SOUTH SAN FRANCISCO CA 94080

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/20/2025

3. Issuer Name and Ticker or Trading Symbol
Alector, Inc. [ ALEC ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Principal Accounting Officer

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	109,358(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	(2)	08/31/2029	Common Stock	20,000	$16.46	D
Employee Stock Option (right to buy)	(2)	11/05/2029	Common Stock	13,842	$17.15	D
Employee Stock Option (right to buy)	(2)	09/30/2030	Common Stock	20,454	$10.24	D
Employee Stock Option (right to buy)	(2)	11/30/2030	Common Stock	10,228	$13.56	D
Employee Stock Option (right to buy)	(3)	09/30/2031	Common Stock	11,552	$23.7	D
Employee Stock Option (right to buy)	(4)	09/30/2032	Common Stock	11,309	$9.46	D
Employee Stock Option (right to buy)	(5)	05/15/2035	Common Stock	2,845	$1.105	D

Explanation of Responses:

1. Of the reported shares, 60,841 are represented by restricted stock units, or RSUs, which vest as follows: (i) 3,148 RSUs vest in two equal quarterly installments beginning on September 1, 2025; (ii) 6,252 RSUs vest in three equal quarterly installments beginning on September 1, 2025; (iii) 3,334 RSUs vest in four equal quarterly installments beginning on September 1, 2025; (iv) 15,973 RSUs vest in five equal quarterly installments beginning on September 1, 2025; and (v) 32,134 RSUs vest in nine equal quarterly installments beginning on September 1, 2025.

2. The shares subject to the option are fully vested and immediately exercisable.

3. Shares subject to the option vest in 48 equal monthly installments beginning on November 1, 2021.

4. Shares subject to the option vest in 48 equal monthly installments beginning on November 1, 2022.

5. Shares subject to the option vest in 12 equal monthly installments beginning on June 1, 2025.

	/s/ Grace Wong-Sarad	06/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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