Tenet Reports Cybersecurity Incident

Tenet Healthcare Corporation (NYSE: THC) experienced a cybersecurity incident last week. The Company immediately suspended user access to impacted information technology applications, executed extensive cybersecurity protection protocols, and quickly took steps to restrict further unauthorized activity.

Efforts to restore impacted information technology operations continue to make important progress. While there was temporary disruption to a subset of acute care operations, the Company’s hospitals remained operational and continued to deliver patient care safely and effectively, utilizing well-established back-up processes. At this time, critical applications have largely been restored and the subset of impacted facilities has begun to resume normal operations.

In parallel, the Company immediately launched an investigation of the incident, which is currently ongoing. The Company is taking additional measures to protect patient, employee and other data, as appropriate, in response to this incident.

Tenet is grateful to its physicians, nurses and staff for their dedication to safely care for patients as the Company works to resolve this matter.

Forward-Looking Statements

This communication includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact are forward-looking statements. These forward-looking statements are generally identified by the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “could” or similar expressions. Forward-looking statements are based on current expectations and assumptions, which are subject to risks and uncertainties that may cause actual results to differ materially from the forward-looking statements. These risks and uncertainties include those related to the cybersecurity incident discussed above, such as our ability to assess and remedy the cybersecurity incident, and legal, reputational and financial risks resulting from this, or other cybersecurity incidents and other risks and uncertainties associated with our business as described in our filings with the Securities and Exchange Commission. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements. We undertake no obligation to revise or publicly release the results of any revision to these forward-looking statements, except as required by law.

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