Boston Scientific Discloses Material Financial Impact & Guidance Risk from Cybersecurity Incident

Item 1.05 Material Cybersecurity Incident Update

Boston Scientific Corporation (NYSE: BSX) has provided a material update on the cybersecurity incident originally identified on August 25, 2026.

Key Findings & Operational Updates

• Unauthorized Activity: The incident involved unauthorized activity leading to a network outage affecting operating systems and business applications, disrupting manufacturing and order shipments.
• Containment & Restoration: As of September 7, 2026, no evidence of ongoing unauthorized access has been identified. Distribution networks are substantially restored, sterilization facilities are operational, and global manufacturing has resumed across most facilities.

Financial & Guidance Impact

• Material Operating Impact: The company determined the disruption will likely have a material impact on results of operations for both the third quarter and full year 2026.
• Guidance Withdrawn/Unlikely to Meet: Boston Scientific stated it is unlikely to achieve its previously issued Q3 and full-year 2026 net sales growth and adjusted EPS guidance (originally provided July 29, 2026).
• Long-Term Financial Condition: The incident is not expected to materially impact long-term financial health.
• Upcoming Outlook: A revised financial outlook will be provided during the Q3 2026 earnings call scheduled for October 28, 2026.