Prior to joining Sonoran Energy, Inc Mr. Rosenthal held the position of General Manager, UK North Sea Operations with Amerada Hess Corporation (now Hess Corporation). Before that, Mr. Rosenthal held the position of Managing Director, Amerada Hess Denmark and prior to that Operations Manager, Amerada Hess Denmark. Previously, Mr. Rosenthal held different positions with Elf Aquitaine in Norway, where he worked both onshore and offshore.

Previous to Elf, Mr. Rosenthal worked for COWI Engineers in Denmark as well for SBM in Monaco, where he worked with the design and construction of floating Oil & Gas facilities.

Mr. Rosenthal brings 17 years of Oil & Gas experience to Sonoran Energy. He was appointed Chairman & CEO of Sonoran Energy in April 2004.

Andrew G. Williams was appointed Chief Financial Officer on December 5, 2007. Mr. Williams has approximately 30 years of oil and gas finance and accounting experience, primarily with BP Amoco, where he held various positions from 1986 through 1999. His background includes seven years in public accounting with Ernst and Young, and two years with PricewaterhouseCoopers. More recently, Mr. Williams was a Consultant with Sirius Solutions providing Sarbanes Oxley Compliance services to Oil and Gas clients. Prior to joining Sirius in May 2006, Mr. Williams had worked on accounting compliance and process improvement initiatives for DHL in Houston and Gap, Inc in Albuquerque, NM. Mr. Williams is a Certified Public Accountant and has a BS in Accounting from the University of Arkansas.

Mr. Watkins brings 23 years of U.S. and international oil and gas development, operations, and engineering management experience to Sonoran Energy. Mr. Watkins previously served in various senior positions with BP, Occidental, Cairn Energy, and Killam Oil. His management roles have included Subsurface Manager for Cairn Energy’s 1,900 square-mile exploration and development block in north-west India, Manager of Production for U.S. producer Killam Oil Co., Ltd., and Production Engineering Manager for Shell/BP/Deminex’s Egyptian joint-venture. His other roles have included long-range business planning, field operations oversight, project management, and technical coordination. With a degree in petroleum engineering from Texas A&M University, Mr. Watkins brings to Sonoran Energy a broad background that bridges practicality with technical leadership.

Miss Marek brings 30 years of oil and gas experience to Sonoran Energy. Miss Marek worked for Texas Oil and Gas in their Corpus Christi, TX office then worked in Dallas for Edwin L. Cox Oil & Gas, Rosewood Resources, Headington Oil & Gas, Wynn-Crosby Energy, and Noble Royalties. In addition to being revenue accounting manager, she participated in and coordinated due diligence efforts on acquisitions ranging in value from $1 million to $90 million. She prepared closing statements and worked closely with the sellers to gather data and information on properties. She supervised royalty distribution, severance taxes, state and federal royalties, gas balancing, and royalty inquiries. She is a past president of COPAS of Dallas and a board member of North American Petroleum Accounting Conference. Miss Marek has a B.S. in Secondary Education from Texas A&M University.