Management

Robert J. Anderson is a petroleum engineer with over 30 years of diversified domestic and international experience. He has served as Director since July 2021, Chief Executive Officer since April 2020, and as President of Earthstone Energy, Inc. since March 2018. Previously, he served as Executive Vice President, Corporate Development and Engineering of Earthstone and served in a similar capacity with Oak Valley Resources, LLC from March 2013 until the closing of its strategic combination with Earthstone in December 2014.

Prior to Oak Valley, he served from August 2012 to February 2013 as Executive Vice President and Chief Operating Officer at Halcón Resources Corporation. Mr. Anderson was employed by GeoResources, Inc. from April 2007 until its merger with Halcón Resources in August 2012, ultimately serving as a director and Executive Vice President, Chief Operating Officer – Northern Region. He was involved in the formation of Southern Bay Energy in September 2004 as Vice President, Acquisitions until its merger with GeoResources in April 2007. From March 2004 to August 2004, Mr. Anderson was employed by AROC, a predecessor company to Southern Bay Energy, as Vice President, Acquisitions and Divestitures. In addition, he has worked for major oil companies and independents with increasing responsibilities.

Mr. Anderson has previously been on the board of a private E&P company with operations in Texas and Louisiana. He is currently an At-Large Director of the Independent Petroleum Association of America (IPAA).

Mr. Anderson has a B.S. degree in Petroleum Engineering from the University of Wyoming and an MBA from the University of Denver.

Mark Lumpkin has over 20 years of experience including over 13 years of oil and gas finance experience.  He has served as Executive Vice President and Chief Financial Officer of Earthstone since August 2017.  Immediately prior to joining Earthstone, he served as Managing Director at RBC Capital Markets in the Oil and Gas Corporate Banking group, beginning in 2011 with a focus on upstream and midstream debt financing.  From 2006 until 2011, he was employed by The Royal Bank of Scotland in the Oil and Gas group within the Corporate and Investment Banking division, focusing primarily on the upstream subsector.  Prior to RBS, he spent two years focused on capital markets and mergers and acquisitions primarily in the upstream sector at a boutique investment bank.

Mr. Lumpkin graduated with a B.A. degree in Economics from Louisiana State University and graduated with a Master of Business Administration degree with a Finance concentration from Tulane University.

Steven C. Collins is a petroleum engineer with over 28 years of operations and related experience. He has served as Executive Vice President, Completions and Operations of Earthstone Energy, Inc. since December 2014. Previously, he served in a similar capacity with Oak Valley Resources, LLC from its formation in December 2012 until the closing of its strategic combination with Earthstone in December 2014.

Prior to employment by Oak Valley, he served from August 2012 to November 2012 as a consultant to Halcón Resources. Mr. Collins was employed by GeoResources from April 2007 until its merger with Halcón Resources in August 2012 and directed field operations, including well completion, production, and workover operations.

Prior to employment by GeoResources, he served as Vice President of Operations for Southern Bay, AROC, and Texoil, and as a petroleum and operations engineer at Hunt Oil Company and Pacific Enterprises Oil Company. His experience includes Texas, Louisiana (onshore and offshore), North Dakota, Montana, and the Mid-Continent.

Mr. Collins graduated with a B.S. degree in Petroleum Engineering from the University of Texas.

Timothy D. Merrifield has over 37 years of oil and gas industry experience. He has served as Executive Vice President, Geology and Geophysics of Earthstone Energy, Inc. since December 2014. Previously, he served in a similar capacity with Oak Valley Resources, LLC from its formation in December 2012 until the closing of its strategic combination with Earthstone in December 2014.

Prior to employment by Oak Valley, he served from August 2012 to November 2012 as a consultant to Halcón Resources upon its merger with GeoResources in August 2012. From April 2007 to August 2012, Mr. Merrifield led all geology and geophysics efforts at GeoResources. He has held previous roles at AROC, Force Energy, Great Western Resources and other independents. His domestic experience includes Texas, Louisiana (onshore and offshore), North Dakota, Montana, New Mexico, Rocky Mountain states, and the Mid-Continent. In addition, he has international experience in Peru and the East Irish Sea.

Mr. Merrifield attended Texas Tech University.

Mr. Oviedo has over 30 years of professional experience with both private and public oil and gas companies.  Prior to joining Earthstone, he was employed by GeoMet, where, since 2006, he had served as the Senior Vice President, Chief Financial Officer, Chief Accounting Officer and Controller.  In addition, Mr. Oviedo was employed by Resolution Performance Products, LLC, where he was Compliance Director and has held positions as Chief Accounting Officer, Controller, and Director of Financial Reporting with various companies in the oil and gas industry.   Prior to the aforementioned experience, he served in the audit practice of KPMG LLP’s Energy Group.  Mr. Oviedo holds a Bachelor’s degree in Business Administration with a concentration in accounting and tax from the University of Houston and is a Certified Public Accountant in the state of Texas.

Robert W. Hunt Jr. has over 15 years of legal experience in the oil and gas industry. He has served as Executive Vice President & General Counsel of Earthstone since April 2022. Prior to joining Earthstone, he served as Senior Vice President, General Counsel and Secretary of Indigo Natural Resources LLC from August 2016 until Indigo’s merger with Southwestern Energy Company in September 2021. From May 2010 until July 2016, Mr. Hunt worked for Cobalt International Energy, Inc., serving most recently as Associate General Counsel focusing primarily on capital markets and major transactions. Mr. Hunt began his career with Vinson & Elkins LLP, practicing corporate and securities law. Mr. Hunt holds a B.S. in Business Administration and Politics from Washington and Lee University and a J.D. from the University of Texas.

Lane McKinney has over 20 years of oil and gas industry experience. He has served as Vice President, Land for Earthstone Energy since 2016. Previously, he served as Land manager with Earthstone Energy. Prior to employment by Earthstone Energy he was employed by Linn Energy and Petrohawk Energy. Mr. McKinney has worked in most major regions in the continental United States, including the San Juan Basin, the Williston Basin, the Midland Basin, Haynesville and the Eagle Ford in South Texas. Mr. McKinney holds a Bachelor of Arts in Letters from the University of Oklahoma.

Lenny Wood is a Geologist with over 20 years of industry experience, primarily in the Permian Basin of West Texas and southeast New Mexico.  He has served as Vice President of Exploration and Development of Earthstone Energy since March 2018.  Previously, he served as Earthstone’s Exploration Manager.  Prior to Earthstone, Mr. Wood was partner in Bold Energy III, where he served as Exploration Manager from its inception in April 2013 to its combination with Earthstone in May 2017.  Immediately prior to Bold, Mr. Wood was employed by EOG Resources from July 2005 to March 2013, and held various geologic positions including Senior Geologist and Geologic Advisor before becoming Division Exploration Manager in July 2011.  As Division Exploration Manager, Mr. Wood oversaw all Permian exploration efforts as well as successful horizontal development programs in both the Wolfcamp Shale Play in the southern Midland Basin and the Leonard (Avalon) Shale Play in southeast New Mexico.

Mr. Wood has a B.S. degree in Geology from Midwestern State University and a M.S. degree in Geosciences from Texas Tech University and is a Certified Petroleum Geologist.

Scott Thelander has over 15 years of professional experience. He currently serves as Vice President of Finance and Treasurer, and has been with Earthstone since 2017. Prior to joining Earthstone, he served as Director of UBS Investment Bank as a member of the Global Natural Resources Group, with exposure to all energy subsectors and a particular focus on mergers and acquisitions and equity and debt financings on behalf of upstream and midstream clients. Prior to joining UBS, he was a member of Barclays Capital’s Global Industrial Group. Mr. Thelander has been involved in ~$35 billion of announced mergers and acquisitions and equity and debt capital markets offerings. He has also held previous roles at Jacobs Engineering and Carter & Burgess as a civil engineer. Mr. Thelander graduated with a Bachelor of Science degree in Civil Engineering from the University of Texas at Austin and holds a Master of Business Administration degree from the University of North Carolina at Chapel Hill.

Mr. Wiederkehr has over 25 years of professional experience. He joined Earthstone in February 2017, and serves as Vice President, Financial Reporting and Tax and Corporate Secretary. From 2007 through 2017, he was employed by GeoMet, Inc. (a public E&P company), where he served as the Treasurer, Director of Financial Reporting and Tax and Corporate Secretary. Prior to joining GeoMet, Inc., he served a total of 9 years in the audit practice of Deloitte Touche Tohmatsu Limited (Los Angeles/Houston), the final two years as Senior Manager. Mr. Wiederkehr holds a Bachelor’s degree in Business Economics with a concentration in Accounting from the University of California at Santa Barbara and is a Certified Public Accountant in the states of California and Texas.

Geoff Vernon has over 12 years of oil and gas industry experience. He joined Earthstone in June 2018 and serves as Vice President, Reservoir Engineering and A&D. Prior to Earthstone, he spent 7 years at Southwestern Energy where he served in a variety of roles in corporate development, reserves and planning, asset development teams, and midstream and marketing. Prior to Southwestern, he spent 4 years working for BP as a reservoir engineer. Mr. Vernon has experience in most major oil and gas basins in the L48 and has been involved in ~$7 billion of announced A&D transactions. Mr. Vernon holds a Bachelor of Science degree in Chemical Engineering from Texas Tech University and a Master of Business Administration degree from Rice University.

Shannon Klier is an Engineer with over 25 years of industry experience, primarily in the Permian Basin of West Texas, Southeast New Mexico, East Texas and the Anadarko and Arkoma basins.  He has served as Vice President of Completions and Production for Earthstone Energy since January 2020.  Previously, he served as Earthstone’s Production Manager. Prior to Earthstone, Mr. Klier was a partner in Bold Energy III and Bold Energy II, where he served as Production Manager and Operations Engineering Manager respectively. Prior to Bold, Mr. Klier worked as a Senior Completions Engineer for Sierra Engineering from 1999 until joining Bold Energy, LP in April of 2006.  Mr. Klier began his oilfield career in Elk City, Oklahoma with Dowell Schlumberger in 1996.

Mr. Klier has a B.S. degree in Civil Engineering from the University of Illinois. He earned his Professional Petroleum Engineering registration from the State of Oklahoma in 2002.

Nick Goree is a Petroleum Engineer with over 12 years of industry experience. He has served as Vice President of Drilling for Earthstone since February 2022 and has been with Earthstone since 2017. Prior to joining Earthstone, he was a Sr. Drilling Engineer for Permian Resources where he executed the drilling of over 100 Permian Basin Horizontals. He has previously held drilling and completion roles at Linn Energy and Chesapeake Energy respectively. Mr. Goree has experience drilling in the majority of unconventional and conventional plays in the United States.

Mr. Goree has a B.S. in Petroleum Engineering from the University of Oklahoma. He also holds a Master of Energy Business from the University of Tulsa and is a registered Project Management Professional.