Form 3 Filing: Initial Statement of Beneficial Ownership of Securities

This document is an initial statement of beneficial ownership of securities (Form 3) filed by Benjamin Cravatt, a director at ALNYLAM PHARMACEUTICALS, INC. The filing indicates that Benjamin Cravatt has acquired or is reporting beneficial ownership of securities. The report was signed on June 3, 2026, covering the period of report up to June 1, 2026. The filing details the owner's address and relationship to the issuer, confirming his directorship. No securities were reported as owned directly or indirectly at the time of this filing, but this form serves as the initial notification as required by regulations.