XTO Energy is a leading oil and natural gas producer in the United States with expertise in developing tight gas, shale gas and unconventional oil resources. XTO or its affiliates operate in major U.S. unconventional producing regions.

Cross Timbers Oil Company changed its name to XTO Energy, reflecting the company's growth and signaling the emergence of what was now a $3 billion enterprise focused on natural gas production.

ExxonMobil purchase On December 14, 2009, ExxonMobil agreed to acquire XTO Energy Inc. through a merger. ExxonMobil acquired XTO Energy in a deal valued at $36 billion, involving the issuance of 416 million shares of stock and assuming the company's $11 billion in debt.

We operate throughout the United States, from the Great Plains to Appalachia. We own interest in more than 50,000 producing oil and natural gas wells across the United States, and hold more than 9.5 million acres. We also provide operational support for unconventional resource development in Argentina.