It is not owned by a single family anymore!, It is owned by a group that includes most other co's!
"The three largest individual shareholders of Exxon Mobil stock are all current or former executives in the company. We have also given Rex Tillerson, former Exxon Mobil CEO and a Secretary of State under the Trump Administration until March 2018, an honorable mention." Michael Dolan Andrew P. Swiger Mark Albers Rex Tillerson
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