ExxonMobil Corp

(XOM)

Exxon Mobil Corporation is the largest oil and gas company in the world.

The company has many divisions and hundreds of affiliates with names that include ExxonMobil, Exxon, Esso or Mobil. Divisions and affiliated companies of ExxonMobil operate or market products in the United States and overseas.

ExxonMobil's principal business is energy, involving exploration for, and production of, crude oil and natural gas, manufacture of petroleum products and transportation and sale of crude oil, natural gas and petroleum products.

On June 25, 2010, it acquired XTO Energy Inc. by merging a wholly owned subsidiary of ExxonMobil with and into XTO.