Mark J. Mize serves as Executive Vice President, Chief Financial Officer and Treasurer. Mr. Mize served as Executive Vice President, Chief Financial Officer and Treasurer of Petrohawk Energy Corporation from August 2007 until BHP Billiton acquired Petrohawk in August 2011. Mr. Mize served as the Chief Ethics Officer and Insider Trading Compliance Officer for Petrohawk until June 2009. Additionally, he served as Vice President, Chief Accounting Officer and Controller at Petrohawk from July 2005 until August 2007. Mr. Mize first joined Petrohawk in November 2004 as Controller. Prior to working at Petrohawk, Mr. Mize was the Manager of Financial Reporting of Cabot Oil & Gas Corporation, a public oil and gas exploration company, from January 2003 to November 2004. He was an Audit Manager with Pricewaterhouse Coopers LLP from 1996 to 2002. Mr. Mize has a Bachelor degree in Accounting from the University of Houston and is a Certified Public Accountant.