ALEC officer granted RSUs and options; 411,570 shares owned

Rhea-AI Filing Summary

Alector (ALEC) reported an insider equity award on Form 4. An officer (Chief Bus Ofcr & Interim CFO) acquired 65,000 restricted stock units on 11/10/2025 at $0, and was granted an employee stock option for 195,000 shares at an exercise price of $1.31, expiring 11/09/2035.

The RSUs vest in 12 equal quarterly installments beginning December 1, 2025. The option vests in 48 equal monthly installments beginning December 10, 2025. Following these awards, beneficial ownership was 411,570 shares, held directly.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Berkley Neil Lindsay

Role Chief Bus Ofcr & Interim CFO

Type	Security	Shares	Price	Value
Grant/Award	Employee Stock Option (right to buy)	195,000	$0.00	--
Grant/Award	Common Stock	65,000	$0.00	--

Holdings After Transaction: Employee Stock Option (right to buy) — 195,000 shares (Direct); Common Stock — 411,570 shares (Direct)

Footnotes (1)

1. The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on December 1, 2025. Shares subject to the option vest in 48 equal monthly installments beginning on December 10, 2025.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Berkley Neil Lindsay

(Last) (First) (Middle)

C/O ALECTOR, INC.

131 OYSTER POINT BLVD, SUITE 600

(Street)

SOUTH SAN FRANCISCO CA 94080

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Bus Ofcr & Interim CFO

3. Date of Earliest Transaction (Month/Day/Year)
11/10/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/10/2025		A		65,000(1)	A	$0	411,570	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	$1.31	11/10/2025		A		195,000		(2)	11/09/2035	Common Stock	195,000	$0	195,000	D

Explanation of Responses:

1. The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on December 1, 2025.

2. Shares subject to the option vest in 48 equal monthly installments beginning on December 10, 2025.

	Grace Wong-Sarad, by power of attorney	11/12/2025
	** 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 4 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Alector (ALEC) disclose in this Form 4?

An officer reported 65,000 RSUs acquired at $0 and an option grant for 195,000 shares at $1.31 on 11/10/2025.

How do the 65,000 RSUs vest for ALEC?

They vest in 12 equal quarterly installments beginning on December 1, 2025.

What are the terms of the 195,000-share option for ALEC?

The option has a $1.31 exercise price, vests in 48 equal monthly installments starting December 10, 2025, and expires on 11/09/2035.

What is the insider’s beneficial ownership after the transactions?

Beneficial ownership was 411,570 shares, held directly, after the reported transactions.

What role does the reporting person hold at Alector (ALEC)?

Officer: Chief Business Officer & Interim CFO.

What is the transaction date on the ALEC Form 4?

The earliest transaction date reported is 11/10/2025.