Form 4: Alector CEO Arnon Rosenthal Sells Shares to Cover Tax Obligations

Alector's CEO, Arnon Rosenthal, sold shares of common stock on March 3, 2025, to cover tax obligations related to vesting restricted stock units.

Summary

• On March 3, 2025, Arnon Rosenthal, CEO of Alector, Inc., sold 40,330 shares of Alector's common stock at a weighted average price of $1.4673.
• The sale was executed to satisfy tax obligations related to the vesting of restricted stock units (RSUs).
• Following the transaction, Rosenthal directly owns 2,466,744 shares.
• Rosenthal also indirectly owns shares through several trusts: The Rosenthal Family Revocable Trust (1,972,875 shares), Adi Rosenthal 2007 Trust (652,500 shares), Noam Rosenthal 2007 Trust (652,500 shares), and Shani Rosenthal 2007 Trust (652,500 shares).

Sentiment

Score: 6

Explanation: The sentiment is neutral. The filing simply reports a routine transaction (sale of shares for tax purposes) by the CEO. It doesn't inherently indicate positive or negative sentiment about the company's prospects.

Industry Context

Form 4 filings are a routine part of the stock market, providing transparency into the transactions of company insiders. This filing indicates that the CEO sold shares to cover tax obligations, which is a common practice.

Comparison to Industry Standards

• Insider sales are common across the biotechnology industry, especially after vesting events.
• It's typical for executives to sell a portion of their shares to cover tax liabilities.
• The size of the sale (40,330 shares) is relatively small compared to the total shares owned directly and indirectly by Rosenthal.

Stakeholder Impact

• The sale of shares by the CEO could have a minor impact on shareholder sentiment, but is unlikely to be significant given the reason for the sale and the relatively small number of shares involved.

Key Dates

Keywords

Alector, Arnon Rosenthal, share sale, Form 4, SEC filing, restricted stock units, ALEC, insider trading