Alector CEO sells 72.6K shares for taxes
Alector’s CEO sold shares mainly to cover tax obligations from RSU vesting and remains a large direct and indirect shareholder.
Rhea-AI Filing Summary
Alector, Inc. (ALEC) disclosed that Chief Executive Officer and director Arnon Rosenthal sold 72,606 shares of common stock on September 3, 2026 at a weighted average price of $2.6647 per share, with trades occurring between $2.49 and $2.75. The sale was made to satisfy the reporting person’s tax obligations related to vesting restricted stock units. After this transaction, he directly holds 2,294,600 shares of Alector common stock and also reports additional indirect holdings as trustee of several family trusts.
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Insights
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Insider Trade Summary
Net Seller: 72,606 shares
Net Sell
5 txns
Insider
Rosenthal Arnon
Role
Chief Executive Officer
Sold
72,606 shs ($193K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock F1, F2 | 72,606 | $2.6647 | $193K |
| holding | Common Stock F3 | -- | -- | -- |
| holding | Common Stock F4 | -- | -- | -- |
| holding | Common Stock F5 | -- | -- | -- |
| holding | Common Stock F6 | -- | -- | -- |
Holdings After Transaction:
Common Stock — 2,294,600 shares (Direct);
Common Stock — 3,930,375 shares (Indirect, See footnote)
Footnotes (6)
- 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.
- F2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2.49 to $2.75. 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.
- F3. The reported securities are held directly by The Rosenthal Family Revocable Trust Dated November 4, 1994, as restated on June 9, 1999, for which the Reporting Person serves as trustee.
- F4. The reported securities are held directly by the Adi Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- F5. The reported securities are held directly by the Noam Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
- F6. The reported securities are held directly by the Shani Rosenthal 2007 Trust dated March 27, 2007, for which the Reporting Person serves as trustee.
Key Figures
Shares sold: 72,606 shares
Weighted average sale price: $2.6647 per share
Sale price range: $2.49–$2.75 per share
+1 more
4 metrics
Shares sold
72,606 shares
Common stock sale reported for September 3, 2026
Weighted average sale price
$2.6647 per share
Average price for the 72,606 shares sold on September 3, 2026
Sale price range
$2.49–$2.75 per share
Range of individual transaction prices within the reported sale
Direct holdings after transaction
2,294,600 shares
Direct Alector common stock held by Arnon Rosenthal following the sale
Key Terms
restricted stock units, weighted average price, indirect ownership, trustee
4 terms
restricted stock units financial
"tax obligations in connection with the vesting of 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.
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.
indirect ownership financial
"The reported securities are held directly by the Rosenthal Family Revocable Trust"
trustee financial
"for which the Reporting Person serves as trustee."
A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.
FAQ
What insider transaction did Alector (ALEC) report for its CEO Arnon Rosenthal?
Alector reported that CEO Arnon Rosenthal sold 72,606 shares of common stock on September 3, 2026. The sale is described as a disposition of common stock and is the only reported buy/sell transaction in this Form 4.
Does this Alector (ALEC) Form 4 indicate a Rule 10b5-1 trading plan for the CEO’s sale?
No. The document-level indicator for Rule 10b5-1 status is unchecked, and the footnotes do not describe the transaction as occurring under a Rule 10b5-1 or other pre-arranged trading plan.
What indirect Alector (ALEC) holdings are reported for the CEO in this Form 4?
The filing reports indirect ownership of common stock held by The Rosenthal Family Revocable Trust and three 2007 trusts for Adi, Noam, and Shani Rosenthal, for which Arnon Rosenthal serves as trustee. Specific share counts for these indirect positions are not listed in the data provided.
AI-generated analysis. How Rhea-AI works. Not financial advice.
