DJR Energy Team

David Lehman

President & CEO

David H. (Dave) Lehman is a petroleum geologist, executive and businessman with extensive experience in all aspects of the upstream oil and gas business. Dave began his industry career at Exxon, where he held many positions of significant responsibility as an executive. These included Manager of worldwide new business opportunities for Exxon Exploration Company; and Advisor for Global Exploration to Exxon’s Upstream Director. After 27 years at Exxon, he successfully built, and profitably sold, two oil and gas companies; making returns of over 10 times in the first company, and seven times in the second company, for his investors. He holds degrees in Geosciences from Franklin and Marshall College, and The University of Texas at Austin.

Jerry Austin

Vice President Production Operations

Jerry Austin has substantial Oil and Gas operations experience working in the upstream and mid-stream energy sectors. Prior to joining DJR Energy, he consistently delivered superior business and operational results as a Senior Site Operations Manager with Amoco Production Co. and Crescendo Resources in the Anadarko Basin and with BP America Production Company in Wyoming’s Greater Green River Basin. After a proven track record, as a site manager, Jerry was assigned to the role of Area Operations Manager for BP’s Rockies Region and later as the San Juan Basin Manager in Colorado and New Mexico. Jerry graduated with a Bachelor of Science degree in Business from East Central University and completed BP’s Operations Academy at Massachusetts Institute of Technology (MIT). He has also served on the board of directors for Petroleum Association of Wyoming and Colorado Oil & Gas Association.

Jack Rosenthal

Geoscience Manager

Mr. Rosenthal has more than 10 years of experience in upstream oil and gas operations. He successfully developed the geological foundation for major acquisitions in the Denver-Julesburg basin as a leading member of the DJ Resources team. Mr. Rosenthal now serves as Geoscience Supervisor directing and participating in acquisition programs throughout the Rockies and mid-continent. These in depth evaluation projects have both delineated numerous development targets and driven recent acquisitions in the San Juan Basin. Jack received a BA in geology from Franklin and Marshall College.

Jeff King

Chief Financial Officer

Mr. King has significant experience in oil & gas investment banking, equity research, and commodities transactions. Prior to joining DJR Energy, he was a managing director in Scotiabank’s energy commodities group based in Toronto. Prior to Scotiabank, Mr. King worked at Credit Suisse as an investment banker in New York where he executed numerous oil & gas M&A and financing transactions. Prior to this, he worked as an equity research analyst at Investec Securities in London, covering the UK E&P sector. He received his BS in economics and minor in geology from the University of Colorado.

Lisa Lehman

Business Manager

Ms. Lehman has eleven years of experience in the oil and gas industry as well as in sales, recruiting and commercial property and casualty insurance. Ms. Lehman was instrumental in the acquisition of assets from Chesapeake Exploration, Marathon and Marubeni, as well as the divesture of assets to Whiting Petroleum Corp. and BCEI. Her skills include organizational and managerial duties relating to leasing and tracking oil and gas mineral rights and ownership, overseeing permitting and drilling, obtaining business insurance and bonds, managing accounts payable, and employee payroll and benefits. She received her BA in Business Management at Franklin & Marshall College.

Sharon Crumb

Senior Landman

Ms. Crumb has worked in the oil and gas industry for thirty-seven years. Prior to her three years with DJR, she worked at Bill Barrett Corporation for ten years and prior to that Independent Petroleum and Patina Oil & Gas Corp. She was influential in DJR’s asset divesture to BCEI in July 2014. Ms. Crumb has extensive knowledge in curative, due diligence, lease and title matters. She has set up and maintained numerous lease records systems and obligations. She has also frequently handled substantial contracts including Purchase and Sale Agreements, Assignments, Communitization Agreements, Exploration Agreements and Farmouts, and Joint Operating Agreements.