April 26 (Reuters) - Scott Sheffield, who built U.S. oil producer Pioneer Natural Resources (PXD.N) into the largest producer in Texas, will retire at the end of the year, the company said on Wednesday.
With its $52 billion market value, Pioneer has repeatedly been discussed as a potential candidate for U.S. oil majors.
Sheffield, 70, was Pioneer’s founding CEO from 1997 to 2016 and its chairman since 1999.
In an interview, Sheffield declined to comment on merger rumors, noting Pioneer "will always do the right thing for shareholders."
Richard Dealy, Pioneer's chief operating officer and former finance chief, was named CEO, effective upon Sheffield's retirement.