Management

  • Christopher N. O’Sullivan

    Chris O’Sullivan, President of Paloma Resources, LLC, founded the company in 2004. Mr. O’Sullivan is primarily responsible for project selection and overall project execution. Mr. O’Sullivan has led the company in a series of private equity sponsored projects located in the Anadarko STACK, the TMS in eastern Louisiana, the Utica/Point Pleasant in eastern Ohio, the Eagle Ford Shale in South Texas, the Haynesville Shale in East Texas, the Barnett Shale in North Texas, the Lobo/Expanded Wilcox in South Texas, and the Miocene in the Gulf of Mexico’s Matagorda Island Area.

    Mr. O’Sullivan received a Bachelor of Science degree in Petroleum Engineering from The University of Texas in 1983.

  • Mark J. Gabrisch

    Mark Gabrisch, Executive Vice President, Land, of Paloma Resources, LLC, joined the company in 2006 as VP, Land. Mr. Gabrisch is primarily responsible for managing every aspect of the company’s land and legal activities, including direct involvement in all contract negotiations and trade agreements. Further, Mr. Gabrisch managed asset and entity sales for all Paloma entities since 2008.

    Mr. Gabrisch received a Bachelor of Science degree in Petroleum Land Management from The University of Houston in 1985.

  • William C. Derrick

    Will Derrick, Executive Vice President, Business Development, joined the company in 2021. Mr. Derrick has over 10 years of energy experience and primarily focuses on business development and strategy for Paloma. After starting his career in E&P equity research at SunTrust Robinson Humphrey, Mr. Derrick founded and has led a series of oil and gas companies in the Mid-Continent including Penny Resources and Wayfinder Resources.

    Mr. Derrick received a Bachelor of Business Administration from Millsaps College in 2012.

  • R. E. (Bobby) Poirrier, Jr.

    Bobby Poirrier joined Paloma Resources, LLC in late 2012 and currently serves as Executive Vice President, Chief Financial Officer and Treasurer. Mr. Poirrier has nearly 30 years of energy industry experience, most recently in the capacity of Vice President of Corporate Development and Planning and Treasurer for Energy XXI.

    Mr. Poirrier received a Bachelor of Science degree in Petroleum Engineering from Colorado School of Mines in 1992 and a Master of Science degree in Finance from The University of Houston in 2002

  • Andrew N. Keck

    Andrew Keck, Senior Vice President, Land and General Counsel, of Paloma Resources, LLC, joined the company in 2015. Mr. Keck has more than 15 years of experience in the energy industry, including roles with Anadarko Petroleum Corporation and Hess Corporation. Mr. Keck oversees the day-to-day operations of the land department as well as all A&D activity.

    Mr. Keck received a Bachelor of Arts degree in Communications from the University of Central Oklahoma in 2003 and a Juris Doctorate degree from The University of Tulsa College of Law in 2007.

  • Ross A. Hayes

    Ross A. Hayes, Vice President of Drilling and Completions, joined Paloma Resources, LLC, in 2019 as a senior drilling engineer. Mr. Hayes began his career in the energy industry in 2011 with Alta Mesa Resources where he held multiple roles of increasing responsibility leading drilling, completion, and workover operations for assets in the Gulf Coast inland waters, Oklahoma, Louisiana, Texas, Michigan, New Mexico, and Idaho. Mr. Hayes and his team are responsible for leading and managing the execution of the company’s drilling and completions operations.

    Mr. Hayes holds a Bachelor of Science degree in Mechanical Engineering from Texas A&M University, a Bachelor of Arts degree from Southwestern University, and an MBA from Boston University.

  • Grant T. Morton

    Grant Morton, Vice President of Finance, joined Paloma Resources, LLC in 2019. Prior to joining Paloma, Mr. Morton worked for Macquarie Bank’s Energy Capital Group where he evaluated and structured debt, equity, and derivative transactions. Mr. Morton is primarily engaged in corporate budgeting, risk management, treasury management, and transaction analysis.

    Mr. Morton received a B.B.A. in Finance, from the University of Texas at Austin in 2013, where he was a member of the Business Honors Program.

  • Harrison R. Hastings

    Harrison R. Hastings

    Harry Hastings, Vice President, Geology, joined Paloma Resources, LLC in early 2023. Mr. Hastings is primarily responsible for prospect generation, and subsurface characterization, evaluation, and development for Paloma. Prior to joining the team, Mr. Hastings worked for Cimarex Energy where he gained experience in the assessment and development of unconventional reservoirs, acquisition evaluation, and prospect generation. Mr. Hastings has worked extensively on a variety of projects in the Permian Basin, as well as in numerous other areas across the continental U.S. including the Anadarko, DJ, and Appalachian basins, and East Texas and North Louisiana Hydrocarbon Fairways.

    Mr. Hastings received Bachelor of Science and Master of Science degrees from Texas A&M University. He is an active member of the American Association of Petroleum Geologists and the West Texas Geologic Society.