Alector insider plans sale of 63K shares for taxes

Alector, Inc. (symbol ALEC) received a notice under Rule 144 that Neil L. Berkley intends to sell shares of its common stock.

Rhea-AI Filing Summary

Alector, Inc. (symbol ALEC) received a notice under Rule 144 that Neil L. Berkley intends to sell shares of its common stock. The notice covers up to 63,095 shares, which were received upon vesting of restricted stock units on September 1, 2026, and are being sold to satisfy related tax obligations. Morgan Stanley Smith Barney LLC is listed as the broker. The filing also notes a prior sale of 19,360 shares of common stock during the past three months.

Key Figures

Shares to be sold: 63,095 shares of common stock Shares sold in past 3 months: 19,360 shares of common stock Value of past 3 months’ sales: $38,221.16 +2 more

5 metrics

Shares to be sold 63,095 shares of common stock Securities To Be Sold section, vesting of RSUs on 09/01/2026

Shares sold in past 3 months 19,360 shares of common stock Securities Sold During The Past 3 Months, dated 06/02/2026

Value of past 3 months’ sales $38,221.16 Total consideration for 19,360 shares sold on 06/02/2026

Notice date 09/01/2026 Date of Notice for the Form 144 filing

Planned sale settlement date reference 09/01/2026 Date tied to vesting of RSUs and securities to be sold

Key Terms

Rule 144, restricted stock units, RSUs, Form 144

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock units financial

"The securities to be sold were received upon the settlement of vested restricted stock units"

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.

RSUs financial

"The securities to be sold were received upon the settlement of vested restricted stock units, or RSUs."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

Form 144 regulatory

"144: Securities Sold During The Past 3 Months"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

What does the Form 144 filing for ALEC disclose about planned share sales?

The Form 144 filing discloses that Neil L. Berkley plans to sell up to 63,095 shares of Alector, Inc. common stock. These shares were acquired from vested RSUs on September 1, 2026, and the sale is intended to cover the reporting person’s tax obligations from that vesting event.

Who is selling Alector, Inc. (ALEC) shares under this Form 144?

The seller is Neil L. Berkley, on whose behalf the Form 144 is filed. The notice states that the common stock to be sold was received from the vesting of restricted stock units and that the reported shares will be sold to satisfy his tax obligations.

How many ALEC shares has the filer sold in the past three months?

Over the past three months, 19,360 shares of Alector, Inc. common stock were sold for a total of $38,221.16. This prior activity is disclosed in the “Securities Sold During The Past 3 Months” section of the Form 144 filing.

What is the source of the Alector (ALEC) shares being sold in this Form 144?

The shares come from the vesting of restricted stock units (RSUs) on September 1, 2026. The filing explains that the securities were received upon settlement of vested RSUs and are being sold to satisfy the reporting person’s tax obligations.

Which broker is handling the planned sale of ALEC shares?

The planned sale of Alector, Inc. common stock will be handled through Morgan Stanley Smith Barney LLC, Executive Financial Services, located at 1 New York Plaza, New York, NY, as listed in the Securities Information section of the Form 144.

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

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Available on EDGAR 09/01/2026 - 08:00 PM Accepted by SEC EDGAR 09/01/2026 - 08:00 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002075298
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Alector, Inc.
SEC File Number	001-38792
Address of Issuer	131 Oyster Point Blvd. Suite 600 South San Francisco CALIFORNIA 94080
Phone	(415)-231-5660
Name of Person for Whose Account the Securities are To Be Sold	Neil L. Berkley
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	32103	77047.20	111692011	09/02/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	09/01/2026	Vesting of Restricted Stock Units	Issuer			63095	09/01/2026	(1)

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Neil Berkley C/O Alector, Inc. 131 Oyster Point Blvd., Suite 600 South San Francisco CA 94080	Common Stock	06/02/2026	19360	38221.16

144: Remarks and Signature

Remarks	(1) The securities to be sold were received upon the settlement of vested restricted stock units, or RSUs. The reported shares will be sold to satisfy the reporting person's tax obligations in connection with the vesting of RSUs.
Date of Notice	09/01/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Grace Wong-Sarad, by power of attorney
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)