Artemis Healthcare, Inc. disclosed a ransomware attack targeting its network between May 5 and May 31, 2025. The incident was discovered on May 31, 2025. The breach impacted patient information, including names and potentially other data elements. Artemis engaged third-party forensic specialists, reset passwords, and notified regulators. Notification was sent on December 23, 2025, to individuals in multiple states including Vermont, Maryland, New York, North Carolina, and Rhode Island.