Mr. John Joseph Stephens has been the Chief Financial Officer of AT&T Inc. since June 1, 2011 and also has been its Senior Executive Vice President since June 2011 and also serves as its Principal Accounting Officer. Mr. Stephens served as Controller of AT&T from 2001 to June 1, 2011 and served as its Senior Vice President. He served as Director of Telefonos de Mexico, S.A.B. de C.V. since 2008. He also served as Vice President of Taxes at AT&T and oversaw all corporate tax matters. Mr. Stephens earned his B.S.B.A. degree in accounting from Rockhurst College in Kansas City, Mo. and holds a J.D. degree from the St. Louis University School of Law.