Form 4 Filing for Karen Firestone - Amylyx Pharmaceuticals, Inc.

This filing details a transaction by Karen Firestone, a director at Amylyx Pharmaceuticals, Inc. On May 21, 2026, Ms. Firestone acquired 3,800 shares of Common Stock at a price of $13.51 per share. Following this transaction, her total ownership of the company's common stock is 66,900 shares, held directly.