Caterpillar Inc.

Mr. Rayford Wilkins, Jr., is an Independent Director at Caterpillar, Inc., an Independent Director at Morgan Stanley and an Independent Director at Valero Energy Corp. He is on the Board of Directors at Caterpillar, Inc., Morgan Stanley, Valero Energy Corp., Tiger Woods Foundation, Inc. and Valero Energy Foundation. Mr. Wilkins was previously employed as a Chief Executive Officer-Diversified Businesses by AT&T, Inc., an Independent Director by America Movil SAB de CV, a President & Chief Executive Officer by SBC Pacific Bell, a President & Chief Executive Officer by Southwestern Bell Telephone Co., a Chairman by Cingular Wireless LLC, a President-Business Communications Services by Pacific Bell Telephone Co., and a President-Marketing & Sales by SBC Communications, Inc. He also served on the board at Telmex Internacional SA de CV, Teléfonos de México SAB de CV, H&R Block, Inc., National Urban League, Inc. and YP Holdings LLC. He received his undergraduate degree from The University of Texas at Austin.