Oct 10 (Reuters) - Top U.S. oil producer Exxon Mobil (XOM.N) is in talks to pay more than $250 per share for Pioneer Natural Resources Co (PXD.N), according to a person familiar with the matter.
An all-stock deal could be announced as soon as Wednesday, the person said.
Bloomberg News reported about the deal earlier. Pioneer and Exxon did not immediately respond to a Reuters request for comment.
Pioneer, which closed at $237.41 on Tuesday at a market valuation of about $55.35 billion, is the third-largest oil producer in the Permian basin after Chevron Corp (CVX.N) and ConocoPhillips (COP.N).