Which company was formed by the 1999 merger of Exxon and Mobil?

The story behind the answer

The 1999 merger of Exxon and Mobil formed ExxonMobil.

Exxon and Mobil were both descendants of the original Standard Oil trust, which was broken up by the United States government in 1911. They remained major competitors for most of the twentieth century before agreeing to combine during a period of consolidation in the oil industry.

The transaction was announced in 1998 and completed in November 1999. It created one of the world’s largest publicly traded oil and gas companies, with activities ranging from exploration and production to refining, chemicals, and fuel retailing.

The company’s formal corporate name became Exxon Mobil Corporation, while ExxonMobil became the familiar commercial styling. Chevron is another major American oil company, but it was not created by this transaction. ExxonMobil also retained the separate Exxon, Mobil, and Esso brands in different markets.

Source: Wikipedia · fact-checked Sept. 2026

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