Arnon Rosenthal sold $172K of ALEC stock

Arnon Rosenthal, Chief Executive Officer of Alector, Inc. (ALEC), sold 87,216 shares of ALEC stock worth $172K, per an SEC Form 4 filed Jun 3, 2026.

It was an open-market sale.

The trade happened on Jun 2, 2026, 1 day before it was made public.

ALEC has moved +25.6% since the trade date, from $1.95 to $2.45 (Nov 12, 2026 close).