IRVING, Texas — Exxon Mobil Corp.’s board of directors appointed D.G. (Jerry) Wascom president of ExxonMobil Refining & Supply Co. and elected him a vice president of the corporation. Wascom is currently director of refining for North America, ExxonMobil Refining & Supply Co. For more information, visit http://corporate.exxonmobil.com or call (972) 444-1000.