Alector CFO sells 19,360 shares to cover RSU taxes

Alector, Inc. executive Neil Lindsay Berkley, the CFO & Chief Business Officer, reported an open-market sale of 19,360 shares of common stock on June 2, 2026 at a weighted average price of $1.9742 per share.

Rhea-AI Filing Summary

Alector, Inc. executive Neil Lindsay Berkley, the CFO & Chief Business Officer, reported an open-market sale of 19,360 shares of common stock on June 2, 2026 at a weighted average price of $1.9742 per share. According to the disclosure, these shares were sold to satisfy his tax obligations arising from the vesting of restricted stock units. After this tax-related sale, Berkley directly holds 379,900 shares of Alector common stock.

Insider Trade Summary

Net Seller: 19,360 shares

Net Sell 1 txn

Insider Berkley Neil Lindsay

Role CFO & Chief Business Officer

Sold 19,360 shs ($38K)

Type	Security	Shares	Price	Value
Sale	Common Stock	19,360	$1.9742	$38K

Holdings After Transaction: Common Stock — 379,900 shares (Direct)

Footnotes (2)

1. F1. The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units, or RSUs.
2. F2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $1.92 to $2.08. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff, the issuer, or any security holder of the issuer upon request.

Key Figures

Shares sold: 19,360 shares Weighted average sale price: $1.9742 per share Shares held after transaction: 379,900 shares +2 more

5 metrics

Shares sold 19,360 shares Open-market sale on June 2, 2026

Weighted average sale price $1.9742 per share Average across multiple trades between $1.92 and $2.08

Shares held after transaction 379,900 shares Direct ownership following June 2, 2026 sale

Sale price range $1.92 to $2.08 per share Range of prices for individual trade executions

Net shares sold 19,360 shares Net-sell direction in transaction summary

Key Terms

restricted stock units, weighted average price, open-market sale, Form 4

4 terms

restricted stock units financial

"tax obligations in connection with the vesting of 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.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did Alector (ALEC) report for Neil Lindsay Berkley?

Alector reported that Neil Lindsay Berkley, its CFO & Chief Business Officer, sold 19,360 shares of common stock. The sale occurred on June 2, 2026, and is disclosed in a Form 4 insider trading report filed with the SEC.

How many Alector (ALEC) shares did Neil Lindsay Berkley sell and at what price?

Neil Lindsay Berkley sold 19,360 shares of Alector common stock at a weighted average price of $1.9742 per share. The footnote explains the shares were sold in multiple transactions with prices ranging between $1.92 and $2.08.

Why did Alector (ALEC) executive Neil Lindsay Berkley sell shares in this Form 4?

The filing states Berkley sold the reported shares to satisfy his tax obligations related to the vesting of restricted stock units. This indicates the sale was tied to compensation-related taxes rather than a purely discretionary portfolio decision.

How many Alector (ALEC) shares does Neil Lindsay Berkley hold after the reported sale?

After the June 2, 2026 transaction, Neil Lindsay Berkley directly holds 379,900 shares of Alector common stock. This post-transaction balance is disclosed in the Form 4 and reflects his remaining direct ownership position.

Was Neil Lindsay Berkley’s Alector (ALEC) share sale an open-market transaction?

Yes. The Form 4 identifies the transaction with code "S" and describes it as an open-market sale. The weighted average price reflects multiple trade executions between $1.92 and $2.08 per share during the transaction.

What does the weighted average price mean in the Alector (ALEC) Form 4 filing?

The weighted average price of $1.9742 per share represents the average price across multiple trades. The filing notes shares were sold between $1.92 and $2.08, and detailed breakdowns can be provided to the SEC, issuer, or shareholders on request.

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

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Accepted by SEC EDGAR 06/03/2026 - 05:30 PM 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)
06/02/2026

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	06/02/2026		S(1)		19,360	D	$1.9742(2)	379,900	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

Explanation of Responses:

1. The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units, or RSUs.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $1.92 to $2.08. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff, the issuer, or any security holder of the issuer upon request.

	/s/ Grace Wong-Sarad, by power of attorney	06/03/2026
	** 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)