UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the quarterly period ended June 30, 2019 OR ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from to Commission File Number 1-7293 _________________________________________ TENET HEALTHCARE CORPORATION (Exact name of Registrant as specified in its charter) _____________ ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the quarterly period ended March 31, 2019 OR ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from to Commission File Number 1-7293 _________________________________________ TENET HEALTHCARE CORPORATION (Exact name of Registrant as specified in its charter) ____________ ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-K x Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2018 OR ¨ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from to Commission File Number 1-7293 ________________________________________ TENET HEALTHCARE CORPORATION (Exact name of Registrant as specified in its charter) ...