Nutex Health Inc. told the US SEC in an 8-K dated 31 August 2026 that it believes an unauthorised third party accessed and exfiltrated information from its servers, including patient, employee, credentialed-provider, business and financial data that is private or confidential.

A third party has threatened to post that information. The Houston company says it has not identified a material impact on operations or financial reporting systems to date, and it has not named the actor. After an earlier 24 August 8-K, a purported Texas class action (Haley v. Nutex Health, Inc., S.D. Tex.) was filed on 27 August 2026.

According to The Record from Recorded Future News (1 September), a group calling itself the Gentlemen claimed responsibility for the attack. (source: The Record)

No Australia link is reported.

Correction (27 Oct 2026): the gang's claim is now credited to The Record; the SecurityWeek link and the details only it gave (an alias for the gang and a leak-site deadline) have been removed, and a duplicate link to the same 8-K has been dropped. (source: The Record)

Correction (05 Nov 2026): removed the ransomware gang's claim from the title and cut it to one credited sentence; the card now says Nutex believes the data was accessed and exfiltrated, as its 8-K states. (sources: Nutex Health Form 8-K; The Record)