A single line buried in an old contract kicked off a 20-month battle between ExxonMobil and Chevron over the biggest offshore oil discovery in years.

The story behind how it unfolded shows how American oil executives’ usual cordial relationships were pushed to the breaking ...

Scott Sheffield, the founder of Pioneer Natural Resources and one of ExxonMobil’s largest individual shareholders, has ...

The Federal Trade Commission has rejected a petition from Scott Sheffield, founder and former CEO of Pioneer Natural ...