Comprised of industry veterans, the Sequel management team has over 75 years of combined experience in the exploration, development, and operation of oil and gas fields across nearly every major producing basin in the United States.

 David J Kornder
Managing Director

Phone: 303-468-2106
Email: dkornder@sequelenergy.com

David Kornder has over twenty years of experience in oil and gas and finance.  Mr. Kornder joined Sequel Energy Group LLC as one of its founders in November 2016. From September 2008 to June 2015, Mr. Kornder was the President and Chief Executive Officer of Cornerstone Natural Resources LLC, a privately held independent oil and gas company focused on development drilling and production in the Williston Basin in North Dakota.  From February 2007 to June 2008, Mr. Kornder served as Executive Vice President and Chief Financial Officer at BioFuel Energy Corp., a publicly traded ethanol production company. From April 2006 to January 2007, Mr. Kornder served as Senior Vice President and Chief Financial Officer of Petrie, Parkman, LLC a privately held investment bank focused on the energy sector.  From May 1996 to May 2005, Mr. Kornder served as Executive Vice President, Chief Financial Officer and Director for Patina Oil & Gas Corporation, a publicly traded independent oil and gas company that was sold to Noble Energy Corporation in May 2005.  From February 1993 to April 1996, Mr. Kornder served as Vice President and Chief Financial Officer of Gerrity Oil & Gas Corporation, a publicly traded independent oil and gas company. Prior to that, Mr. Kornder served in various roles including Assistant Vice President — Finance at Gillett Group Management and as a senior accountant with Deloitte.  Mr. Kornder presently serves on the boards of SandRidge Energy Inc., a publicly traded independent oil and gas company, 3 Bear Energy, LLC, a privately-held midstream energy company, and the C.M. Russell Museum, in Great Falls, Montana.  Mr. Kornder holds a B.A. in accounting from Montana State University.

 Douglas W York
Managing Director

Office: 303-468-2106
Email: dyork@sequelenergy.com

Mr. York has served in a number of managerial and executive roles during his tenure in the E&P sector, most recently as Co-Founder and Managing Member of privately held Sequel Energy, LLC. Sequel Energy was formed in 2006 and was focused on the acquisition and development of operated and non-operated interests in Louisiana, Oklahoma and North Dakota prior to divesting its assets in late 2013 and early 2014.  Before co-founding Sequel, Doug spent ten years with St. Mary Land and Exploration Company (NYSE – SM), a publicly-traded company with operations in multiple U.S. basins, where he served as VP, Engineering and Acquisitions and later as EVP and COO.  Mr. York served as Acquisitions Coordinator for the Rockies Region and as Regional Engineer for the Northern Business Unit during three years with Meridian Oil Company.  Doug began his career with ARCO Oil and Gas Company in 1983 where his roles included Drilling Engineering, Reservoir Engineering and Planning and Evaluation.  Doug holds a B.S. Degree in Petroleum Engineering from the University of Tulsa.  He has served on the Boards of the Independent Petroleum Association of the Mountain States, Montana Petroleum Association, Petroleum Engineering Advisory Board at the University of Tulsa, and currently serves on the Board of KLR Energy Acquisition Corp. and the Development Board of Colorado UpLift. Doug is a Registered Professional Engineer in the State of Colorado and a member of the Society of Petroleum Evaluation Engineers.

 Jeffrey C Hemphill
Managing Director

Phone: 303-468-2106
Email: jhemphill@sequelenergy.com

Prior to forming Sequel Energy Group, Mr. Hemphill was a Principal and Co-Founder of Sequel Energy, LLC, a privately held, independent, oil & gas company based in Denver, CO.  Sequel Energy in partnership Lucas Capital Management and GE Energy Financial Services, held interest in over 400 producing wells and over 100,000 net mineral acres in multiple producing basins in the United States.  Sequel Energy’s operations were concentrated in the Williston Basin where the company successfully developed its significant Bakken shale position.  Sequel Energy divested all of its producing assets and leasehold in late 2013 and early 2014.  Prior to forming Sequel Energy, Mr. Hemphill co-founded and managed Resource Solutions, LLC a large geoscience consulting firm focused on 3D seismic and geologic evaluation, as well as prospect generation in multiple domestic basins.  Additionally, Resource Solutions held interest in successful exploration drilling programs in the upper Texas / SW Louisiana gulf coast and the offshore GOM.   Prior to forming Resource Solutions, Mr. Hemphill was a Senior Geophysicist for Meridian Oil (Burlington Resources) and Arco Oil and Gas (Vastar Resources).  Mr. Hemphill graduated from the Colorado School of Mines with a BS in Geophysical Engineering in 1986.