Blueprint Medicines Corporation (aka Sanofi Company Blueprint) Layoffs - WARN Act Notices

Blueprint Medicines Corporation (aka Sanofi Company Blueprint) filed a single WARN Act notice with an effective date of October 2026, affecting 229 employees at its Cambridge, MA facility. The notice was classified as a layoff.

Under the WARN Act (Worker Adjustment and Retraining Notification Act), employers with 100 or more employees are required to provide 60 days advance notice before conducting plant closures or mass layoffs. These notices are filed with state labor departments and are public record.