Alector CFO receives 190,000 options and stock grant

The 44,567 restricted stock units vest in 12 quarterly installments, while the 190,000 options vest in 48 monthly installments.

Rhea-AI Filing Summary

Alector, Inc. (ALEC) CFO & Chief Business Officer Neil Lindsay Berkley received awards on October 14, 2026, consisting of 44,567 restricted stock units and options covering 190,000 common shares. The RSUs vest in 12 equal quarterly installments beginning December 1, 2026; his reported direct common-stock position following the RSU award was 395,216 shares. The options have a $1.88 exercise price, vest in 48 equal monthly installments beginning November 13, 2026, and expire October 13, 2036.

Insider Trade Summary

Grant/Award: 234,567 shares

Grant/Award 2 txns

Insider Berkley Neil Lindsay

Role CFO & Chief Business Officer

Type	Security	Shares	Price	Value
Grant/Award	Employee Stock Option (right to buy) F2	190,000	$0.00	$0.00
Grant/Award	Common Stock F1	44,567	$0.00	$0.00

Holdings After Transaction: Employee Stock Option (right to buy) — 190,000 contracts (Direct); Common Stock — 395,216 shares (Direct)

Footnotes (2)

1. F1. The reported shares are represented by restricted stock units, or RSUs, which vest in 12 equal quarterly installments beginning on December 1, 2026.
2. F2. Shares subject to the option vest in 48 equal monthly installments beginning on November 13, 2026.

Key Figures

Restricted stock units awarded: 44,567 units Options covering common shares: 190,000 shares Exercise price: $1.88 per share +4 more

7 metrics

Restricted stock units awarded 44,567 units October 14, 2026 award; vesting begins December 1, 2026

Options covering common shares 190,000 shares October 14, 2026 award

Exercise price $1.88 per share Options awarded October 14, 2026

Direct common-stock position after RSU award 395,216 shares Neil Lindsay Berkley's reported position following the October 14, 2026 award

RSU vesting installments 12 equal quarterly installments Beginning December 1, 2026

Option vesting installments 48 equal monthly installments Beginning November 13, 2026

Option expiration date October 13, 2036 Options awarded October 14, 2026

Key Terms

restricted stock units, Employee Stock Option (right to buy), exercise price, vesting

4 terms

restricted stock units financial

"restricted stock units, or RSUs"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Employee Stock Option (right to buy) financial

"Employee Stock Option (right to buy)"

exercise price financial

"Shares subject to the option"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vesting financial

"vest in 48 equal monthly installments"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RSUs did ALEC's CFO receive?

Neil Lindsay Berkley, CFO & Chief Business Officer, received 44,567 restricted stock units on October 14, 2026. They vest in 12 equal quarterly installments beginning December 1, 2026; his reported direct common-stock position following the award was 395,216 shares.

What were the terms of ALEC's CFO's stock-option award?

Berkley received options covering 190,000 common shares, with a $1.88 exercise price. They vest in 48 equal monthly installments beginning November 13, 2026, and expire October 13, 2036.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/15/2026 - 04:05 PM EDT Accepted by SEC EDGAR 10/15/2026 - 04:05 PM EDT Learn about SEC filing dates

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 CALIFORNIA 94080

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	CFO & Chief Business Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/14/2026

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

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

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

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	10/14/2026		A		44,567(1)	A	$0	395,216	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)	$1.88	10/14/2026		A		190,000		(2)	10/13/2036	Common Stock	190,000	$0	190,000	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, 2026.

2. Shares subject to the option vest in 48 equal monthly installments beginning on November 13, 2026.

	/s/ Grace Wong-Sarad, by power of attorney	10/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)