Howard B. Sheppard Former Assistant Treasurer, Chevron Corp.

Mr. Sheppard served as an Assistant Treasurer of Chevron Corp. from 1988 to June 2008.

He was employed by Chevron and its affiliates since the merger of Gulf Oil Corp. with Chevron in 1985. Prior to the merger, Mr. Sheppard held positions of increasing responsibility at Gulf Oil Corporation.

He has served as a Dynegy Director since 2008.