Alector CEO disposes shares for RSU taxes
Alector, Inc. Chief Executive Officer Arnon Rosenthal reported a disposition of 87,216 shares of common stock on June 2, 2026 at a weighted average price of $1.9743 per share.
Accepted by SEC EDGAR
Learn about SEC filing dates
Sentiment and the balance of points
Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Form Type
4
Rhea-AI Filing Summary
Alector, Inc. Chief Executive Officer Arnon Rosenthal reported a disposition of 87,216 shares of common stock on June 2, 2026 at a weighted average price of $1.9743 per share. The shares were sold to satisfy tax obligations from vesting restricted stock units, leaving him with 2,367,206 shares held directly, plus additional indirect holdings through family trusts.
Insider Trade Summary
Net Seller: 87,216 shares
Net Sell
1 txn
Insider
Rosenthal Arnon
Role
Chief Executive Officer
Sold
87,216 shs ($172K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 87,216 | $1.9743 | $172K |
| Holding | Common Stock | -- | -- | -- |
| Holding | Common Stock | -- | -- | -- |
| Holding | Common Stock | -- | -- | -- |
| Holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 2,367,206 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 $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.
- 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 disposed: 87,216 shares
Weighted average sale price: $1.9743 per share
Price range of sales: $1.92–$2.08 per share
+2 more
5 metrics
Shares disposed
87,216 shares
Common stock sold on June 2, 2026
Weighted average sale price
<money>$1.9743</money> per share
Price for 87,216 shares sold
Price range of sales
<money>$1.92</money>–<money>$2.08</money> per share
Multiple transactions underlying weighted average price
Direct holdings after transaction
2,367,206 shares
Common stock held directly following tax-related sale
Example indirect trust holdings
652,500 shares
Common stock held by a Rosenthal family trust
Key Terms
restricted stock units, weighted average price, tax obligations, revocable trust, +1 more
5 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.
tax obligations financial
"sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units"
revocable trust financial
"The reported securities are held directly by The Rosenthal Family Revocable Trust Dated November 4, 1994"
A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.
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
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transaction did Alector (ALEC) report for Arnon Rosenthal?
Alector Chief Executive Officer Arnon Rosenthal reported a disposition of 87,216 shares of common stock. The shares were sold on June 2, 2026 at a weighted average price of $1.9743 per share to cover tax obligations from vested restricted stock units.
What do the family trust holdings mean in Alector (ALEC)’s Form 4 for Rosenthal?
Several entries show Alector shares held indirectly by family trusts, with Rosenthal serving as trustee. These include a revocable family trust and separate 2007 trusts. They indicate additional indirect ownership interests beyond his directly held 2,367,206 common shares after the reported transaction.
AI-generated analysis. How Rhea-AI works. Not financial advice.
