Subsidiary Officers

Clifford C. Cook
Senior Vice President - Supply, Distribution and Planning

Larry M. Echelberger
Senior Vice President - Major Downstream Projects

Anthony R. Kenney
President - Speedway SuperAmerica LLC

Garry L. Peiffer
Senior Vice President - Finance and Commercial Services

Mary Ellen Peters
Senior Vice President - Marketing

J. Douglas Sparkman
Senior Vice President - Transportation and Logistics

Jerry C. Welch
Senior Vice President - Refining

Pamela K. M. Beall
Vice President - Global Procurement  

Robert E. Estill
Vice President - Strategic Planning and Portfolio Management

Patrick J. Kuntz
Vice President - Natural Gas and Crude Oil Sales

Randy K. Lohoff
Vice President - Corporate Responsibility

Rodney P. Nichols
Vice President - Human Resources and Administrative Services

Michael A. Peak
Vice President - Risk Management and Trading

Timothy N. Tipton
Vice President - Technology

J. Michael Wilder
General Counsel and Secretary