Derek S. Reiners

Derek S. Reiners currently serves as the President of Contango Energy Capital LLC, a privately held investment and consulting firm. Prior to that, Mr. Reiners served in key executive roles at ONEOK, Inc. and ONEOK Partners, L.P. from August 2009 to May 2019, including Senior Vice President and Chief Accounting Officer from August 2009 to December 2012; Senior Vice President, Chief Financial Officer and Treasurer from January 2013 to May 2017; and Senior Vice President, Finance and Treasurer from June 2017 to May 2019. He also served on the management and audit committees of Northern Border Pipeline Company and the management committee of Roadrunner Gas Transmission. Mr. Reiners spent 15 years in public accounting and was as a partner at Grant Thornton LLP, where he served clients primarily in the energy industry and was the north Texas energy industry practice leader. Mr. Reiners earned a Bachelor of Science degree in Business Administration with majors in Finance and Economics and a Master of Science degree in Accounting from Oklahoma State University. Mr. Reiners is a certified public accountant.