Trade Summary

3 days ago, Rosenthal Arnon, serving as Chief Executive Officer at Alector, Inc. (ALEC), sold 87,216 shares at $1.97 per share, for a total transaction value of $172,190.55. Following this transaction, Rosenthal Arnon now holds 2,367,206 shares of ALEC.

This sale represents a 3.55% decrease in Rosenthal Arnon's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Tuesday, June 2, 2026 and publicly disclosed via SEC Form 4 filing on Wednesday, June 3, 2026 at 5:30 PM ET, 1 day after the trade was made.

Alector, Inc. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.