Shares of the Dallas-based healthcare services company Tenet Healthcare (THC) were climbing over 7.5% in pre-market trading on Thursday after Dow Jones reported on Wednesday that the company was exploring options related to its future, including the possible sale of the company.

Tenet announced last month that it would replace chairman and CEO Trevor Fetter as director and CEO amid pressure from Glenview Capital Management, an activist investor who owns a 17.8% stake in the company.

The company said he would resign effective earlier of March 15, 2018, or when a successor is appointed.

Its current independent lead director Ronald A. Rittenmeyer assumed the role of executive chairman. The role established Rittenmeyer as the company's senior most executive.

Tenet last month also started the process to "refresh the composition of its Board." The process will ensure that future board members have the best "mix of skill and experience to maximize the future value of the company," Tenet said in August.

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