• Amylyx director Karen Firestone bought 3,800 common shares at USD 13.51 each.
• Firestone’s direct holding rose to 66,900 shares.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Amylyx Pharmaceuticals Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001193125-26-239216), on May 26, 2026, and is solely responsible for the information contained therein.