Amgen disclosed a data breach after attackers stole proprietary company data and patient information from cloud systems managed by third-party providers. The breach, detected in July 2026, may also involve confidential business, intellectual property, and research data. While the company considers the incident material, it does not currently expect a significant financial impact. Amgen is investigating the attack, assessing notification requirements, and will inform affected patients if required. The company has not identified the cloud providers involved or confirmed any link to known threat groups.