Committee Composition

Below is a summary of our committee structure and membership information. To read more about any of the committees, click on committee names in the chart below.
Chairperson Chairperson Committee Member Member Financial Expert Financial Expert
 Audit CommitteeCompensation and Talent Development CommitteeNominating/Corporate Governance Committee
Michael Gambrell 
Michael Gambrell
Director


Michael R. Gambrell has served as a director since September 2015. Mr. Gambrell is a member of the Nominating & Corporate Governance Committee. He is a former Executive Vice President of The Dow Chemical Company, a publicly traded chemicals company, and served as an advisor to the Chairman and CEO of Dow from 2011 to 2012. He retired in December 2012 after serving 37 years with Dow. During his time at Dow, Mr. Gambrell served on the company’s Executive Leadership Committee, Strategy Board, Su... 

   Committee Member
Terry L. Johnson 
Terry L. Johnson
Director


Terry L. Johnston has served as a director since January 2017. Mr. Johnston is a member of the Audit and Nominating & Corporate Governance Committees. He currently serves as Executive Vice President and Chief Operating Officer of the Commercial Segment of Lennox International Inc., a leading international provider of heating and cooling systems and technologies for residential and commercial applications. Mr. Johnston has served in his current role since January 2013 and has held roles of inc... 

Committee Member   Committee Member
Linda Livingstone, Ph.D. 
Linda Livingstone, Ph.D.
Director


Linda A. Livingstone, Ph.D. has served as a director since September 2015. Dr. Livingstone is the Chairman of the Compensation & Talent Development Committee. She is currently Dean of The George Washington University School of Business. Prior to her current position, she served as Dean of the Graziadio School of Business and Management at Pepperdine University from June 2002 through July 2014. Dr. Livingstone began her academic career at Baylor University, where she served for eleven years as... 

  Chairperson  
William Quinn Financial Expert
William Quinn
Director


William F. Quinn has served as a director since September 2015. Mr. Quinn is the Chairman of the Audit Committee and a member of the Compensation & Talent Development Committee. From April 2009 through September 2015, he served as Executive Chairman and Founder of American Beacon Advisors, a mutual fund advisory firm. Mr. Quinn also serves as Independent Trustee of the National Railroad Retirement Investment Trust. Mr. Quinn served as President and CEO of American Beacon Advisors from the tim... 

Chairperson Committee Member  
Robert Swartz 
Robert Swartz
Lead Director


Robert M. Swartz has served as a director since September 2015. Mr. Swartz serves as the lead independent director of the Company’s Board. He also serves as Chairman of the Nominating & Corporate Governance Committee and as a member of the Audit Committee. Mr. Swartz serves as the Executive Vice President of Integration for Southern Glazer’s, Inc., a privately held distributor of wines and spirits. From January 2011 to July 2016, Mr. Swartz has served as the Executive Vice President and Chief... 

Committee Member   Chairperson
J. Kent Sweezey 
J. Kent Sweezey
Director


J. Kent Sweezey has served as a director since December 2016. Mr. Sweezey is a member of the Audit and Compensation & Talent Development Committees. He is a founding partner of Turnbridge Capital, LLC, an energy services, equipment and infrastructure-focused private equity firm, which was founded in 2008. He currently serves as a member of boards of directors of Impact Selector, Inc. and DeBusk Services Group. Prior to co-founding Turnbridge Capital, Mr. Sweezey served as the Managing Partner... 

Committee Member Committee Member