Jerry R. Schuyler is currently interim Chief Executive Officer and Board Chairman and was appointed member of the Board August 8, 2014 because of his substantial knowledge of the energy industry and his business, leadership and management expertise. Mr. Schuyler is currently an independent director for Penn Virginia Corporation, an exploration and production company, a position he has held since November 2016. Mr. Schuyler also served as an independent director for various exploration and production companies including privately-funded Yates Petroleum Corporation and Gulf Coast Energy Resources Company and publicly traded Rosetta Resources Inc. Mr. Schuyler previously served as a director for Laredo Petroleum, Inc. (“Laredo”) for six years. He joined Laredo in June 2007 as Executive Vice President and Chief Operating Officer. In July 2008, he was promoted to President and Chief Operating Officer. He served in that capacity and as a director of the Laredo board of directors until July of 2013 when he announced his retirement. Mr. Schuyler has a Bachelor of Science degree in Petroleum Engineering from Montana College of Mineral Science and Technology.
Michael A. Gerlich joined us in May 2005 as Vice President and Chief Financial Officer and was appointed Corporate Secretary on March 8, 2011. He was promoted to Senior Vice President and Chief Financial Officer on June 7, 2013. Mr. Gerlich has over 34 years of natural gas and oil accounting and finance experience. From 1999 until joining us in 2005, he held various accounting and finance positions at Calpine Natural Gas LP, a wholly-owned subsidiary of Calpine Corporation, an independent electric power generation company listed on the New York Stock Exchange. His last position at Calpine Natural Gas LP was Senior Vice President – Accounting and Finance for natural gas and oil operations of the wholly-owned subsidiary. From 1994 until 1999, Mr. Gerlich served as Vice President and Chief Financial Officer of Sheridan Energy, Inc., an independent natural gas and oil exploration company traded on the NASDAQ, which was acquired in 1999 by Calpine Corporation. Over a 12-year period prior to joining Sheridan Energy, Inc., Mr. Gerlich held various accounting and finance positions with Trinity Resources, Ltd., an independent natural gas and oil exploration and production company, with his last position being Executive Vice President and Chief Financial Officer. Prior to that, Mr. Gerlich was also with Deloitte LLP, where the focus of his practice was with energy related clients. Mr. Gerlich is a Certified Public Accountant and graduated with honors from Texas A&M University with a Bachelor of Business Administration degree in Accounting.
Stephen P. Roberts joined us in June 2017 as Senior Vice President and Chief Operating Officer. Mr. Roberts has over 29 years of experience in the oil and gas industry. Prior to joining Gastar, he was a Senior Vice President over the Anadarko and Arkoma asset groups at Jones Energy, Inc. and served as Senior Vice President of Drilling and Completions. During his 19-year tenure with Jones Energy, he was directly responsible for the drilling and completion of over 700 horizontal wells in seven different formations. Prior to joining Jones Energy, he held various positions of increasing responsibility with Marathon Oil Corporation and Samson Resources Corporation. Mr. Roberts holds a B.S. degree in Petroleum Engineering and a M.B.A. in Finance from Texas Tech University.
Keith R. Blair joined us in August 2005 as a Senior Staff Geologist and was promoted to Vice President, Exploration Manager in 2008. Mr. Blair has over 34 years of natural gas and oil experience. He has extensive working knowledge of natural gas and oil basins in Colorado, New Mexico, East Texas, West Virginia/Pennsylvania, Offshore Gulf of Mexico and the Texas/Louisiana Gulf Coast. Prior to joining us, from 1999 until 2005, he was an independent exploration geologist. From 1995 until 1999, Mr. Blair was a Senior Geophysicist at Schlumberger Limited. Prior to 1995, he held an Exploration Manager/Supervisor position at ConocoPhillips for 14 years. He began his career as a well logging engineer with Halliburton Company. Mr. Blair graduated from Texas A&M University with a Bachelor of Science degree in Geology.
Henry J. Hansen joined us in September 2005 as Vice President of Land. Mr. Hansen has over 34 years of land management experience. Prior to joining us, Mr. Hansen was Rocky Mountain Land Manager with El Paso Corporation, a natural gas and oil exploration, production and pipeline company, from 1999 until January 2003. From January 2003 until June 2004, he worked as an independent land consultant. Mr. Hansen returned to El Paso Corporation in June 2004, where he was a senior landman until joining us in September 2005. Mr. Hansen graduated from the University of Texas at Austin with a Bachelor of Business Administration in Petroleum Management.
Trent J. Determann joined us in August 2014 and was promoted to Vice President-Finance in November 2016. Prior to joining us, Mr. Determann was Manager-Financial Planning and Strategy for PetroPoint Energy Partners, LP (“PetroPoint”), a private equity-backed company formed to acquire and exploit mature conventional onshore oil and gas assets, from October 2012 until the company was sold in August 2014. Prior to PetroPoint, Mr. Determann worked for the energy group of RBC Capital Markets Global Investment Banking Division from October 2010 to October 2012. Mr. Determann began his career as an analyst in the Commercial Banking Group of BBVA Compass. Mr. Determann graduated from Louisiana State University with a Bachelor of Science in Finance.