Form 4: Alector Director Kristine Yaffe Sells 1,000 Shares Under Pre-Arranged Plan

Alector, Inc. Director Kristine Yaffe reported the sale of 1,000 shares of common stock for $1.44 per share, executed under a Rule 10b5-1 trading plan.

Summary

• Kristine Yaffe, a Director of Alector, Inc. (ALEC), reported a transaction involving the company's common stock.
• On June 20, 2025, Ms. Yaffe disposed of 1,000 shares of Alector Common Stock.
• The shares were sold at a price of $1.44 per share.
• Following this transaction, Kristine Yaffe beneficially owns 95,409 shares of Alector Common Stock directly.
• The transaction was conducted pursuant to a Rule 10b5-1(c) contract, instruction, or written plan for the purchase or sale of equity securities.

Sentiment

Score: 4

Explanation: The sentiment is slightly negative due to an insider sale, although it's mitigated by the fact that it was executed under a Rule 10b5-1 plan, indicating a pre-scheduled transaction rather than an immediate reaction to new information. The director still retains a significant number of shares.

Negatives

• A director selling shares, even under a pre-arranged plan, can sometimes be perceived by the market as a signal of reduced insider confidence or a lack of immediate upside potential.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This is an insider transaction filing (Form 4), which reports changes in beneficial ownership by company insiders. Such filings are routine disclosures in the biotechnology and pharmaceutical industry, as in other sectors, and provide transparency into insider stock movements. The sale itself does not directly reflect broader industry trends but rather an individual's portfolio management.

Stakeholder Impact

• Shareholders: The sale by a director might be viewed as a slight negative signal, potentially influencing investor sentiment and the stock price, although the impact is typically limited for routine 10b5-1 sales of this size.

Key Dates

Keywords

Alector Inc., ALEC, Kristine Yaffe, Director, Insider Trading, SEC Form 4, Stock Sale, 10b5-1 Plan, Common Stock