Exxon Mobil Corporation [a] (/ ˌ ɛ k s ɒ n ˈ m oʊ b əl / EK-son-MOH-bəl) [4] [5] [6] is an American multinational oil and gas corporation headquartered in Spring, Texas, a suburb of Houston. [7] [8]: 1 Founded as the largest direct successor of John D. Rockefeller's Standard Oil, the modern company was formed in 1999 following the merger ...