Exxon, Pioneer Natural Resources

Scott Sheffield, the former CEO of Pioneer Natural Resources, is a hero of the Texas oil industry. But the U.S. government has accused him of working with OPEC to fix prices.
ExxonMobil said it completed its deal to buy Pioneer Natural Resources valued at nearly $60 billion after U.S. regulators ...
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The Federal Trade Commission alleges that former Pioneer Natural Resources CEO Scott Sheffield held private conversations with OPEC officials assuring them the company would keep oil output low.
ExxonMobil stock reacts after the oil giant agrees to merge with Pioneer Natural Resources Oil and gas giant ExxonMobil has announced its intentions to buy Pioneer Natural Resources. The deal is ...