Form 4 Filing for Amylyx Pharmaceuticals, Inc.

Karen Firestone, a director at Amylyx Pharmaceuticals, Inc. (AMLX), acquired 8,100 shares of common stock on December 23, 2025. The transaction was executed at a price of $12.45 per share. Following this acquisition, Ms. Firestone now owns 63,100 shares of the company's common stock. The filing, designated as Form 4, indicates a direct ownership of these shares. The transaction code "P" suggests a purchase, and the acquired/disposed code "A" confirms an acquisition. The filing was signed by Joshua B. Cohen as Attorney in Fact.