Nutex Health Says Patient and Employee Data Stolen as Gentlemen Gang Claims Attack

Summary

Hospital and outpatient-facilities operator Nutex Health disclosed in an SEC 8-K filing that hackers stole patient, employee, external-provider and confidential financial data during an August cyberattack and are now extorting the company, threatening to post the data externally.

Key Facts

• Target: Houston-based Nutex Health, which earned US$427.2 million in H1 2026 and operates 27 facilities across 12 states.
• Disclosure timeline: Initially disclosed the attack on 24 August; a class action has since been filed in Texas.
• Attribution: The Gentlemen ransomware gang took credit on its leak site — a Russia-based ransomware-as-a-service group, founded by a disgruntled ex-Qilin affiliate, that has claimed at least 350 attacks since September 2025.

Related Pages

• The Gentlemen — attributing ransomware gang

Source

• The Record — Nutex Health Data Breach