"The Alta Resources team, led by Joe Greenberg, Richard Grigsby and Jenny McCarthy, has done an outstanding job of identifying this play, and executing a strategy to create enormous value in a very short time."

Ken Peak,
Contango Oil & Gas

Our Team

Senior Management

Joseph G. Greenberg
President & CEO

Jennifer McCarthy
Chief Operating Officer

Kenley Steeg
Chief Financial Officer

Jeffrey Brehm
Chief Geologist


Additional Key Personnel

Todd Mitchell
Board Member

Stuart Stedman
Board Member

Townes Pressler
Board Member

Richard Grigsby
Geological Advisor
One Allen Center
500 Dallas Street, Suite 2930
Houston, TX 77002
713-759-1155
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Joseph G. Greenberg, President & CEO

Mr. Greenberg founded Alta Resources, LLC in 1999. Previously, Mr. Greenberg worked as an exploration geologist for Shell Oil Company and Edge Petroleum Company. Mr. Greenberg received a B.S. in Geology and Geophysics from Yale University in 1983, and a Masters in Geological Sciences from The University of Texas at Austin in 1986. He has 29 years of diversified experience in domestic oil and gas exploration. Mr. Greenberg is currently the Board Chair of the YES Prep Public Schools, a system of high performing 6-12 grade schools serving over 9,000 low income children in Houston.
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Richard Grigsby, Geological Advisor

Mr. Grigsby received a B.A. degree in Geology from the University of Colorado in 1976, and a M.S. degree in Geology from the University of Houston in 1990. He has thirty-five years of diversified experience in domestic oil, gas and mineral exploration. Mr. Grigsby joined Union Carbide Corporation in 1976 where he successfully explored for Uranium, Base and Precious Metals throughout the western United States. In 1983, Mr. Grigsby left the mineral exploration industry and joined Edge Petroleum Corporation to conduct domestic oil and gas exploration. Mr. Grigsby's work led to six significant new field discoveries creating in excess of $100,000,000 gross reserve value. Mr. Grigsby joined Alta Resources, LLC in January of 2004. Mr. Grigsby is a member of the American Association of Petroleum Geologists and the Houston Geological Society.
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Jennifer McCarthy, Chief Operating Officer

Mrs. McCarthy began her career with Alta Resources, LLC in May of 2006. Prior to joining Alta, Mrs. McCarthy was a Senior Drilling Engineer for Burlington Resources, where she worked for six years. She received a B.S. degree in Petroleum Engineering from Texas A&M University in 2000 where she was the recipient of the Robert Whiting Graduate of the Year Award. Mrs. McCarthy is an active member of the Society of Petroleum Engineers and was previously Chair of the Drilling and Completion Technical Committees for the SPE Annual Technical Conference.
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Kenley Steeg, Chief Financial Officer

Mr. Steeg joined Alta Resources, LLC in April 2012. Before joining Alta, Mr. Steeg worked for seven years as an energy investment banker focused on equity and debt financing and M&A advisory with Citigroup and Jefferies. He received an M.B.A. in 2003 and B.A. in economics in 1998, both from The University of Texas at Austin.
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Jeffrey Brehm, Chief Geologist

Mr. Brehm joined Alta Resources, LLC in January 2015. Mr. Brehm has 37 years of international and domestic E&P experience. Prior to joining Alta, he worked for 35 year as both an exploration and development geologist for Marathon Oil Corporation. Most recently he worked on the Bakken and the Tyler resource plays in the Williston Basin. He has four new field discoveries in several basins in the continental U.S. In the international arena he is credited with a new field discovery in the North Sea. At the start of his career, he worked for Koch Exploration in Denver. Mr. Brehm received a B.S. degree in Geological Engineering from Colorado School of Mines in 1978.
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Todd Mitchell, Board Member

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Stuart Stedman, Board Member

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Townes Pressler, Board Member

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Richard Grigsby, Geological Advisor